usr.bin/vmstat/vmstat.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-3-Clause
   3  *
   4  * Copyright (c) 1980, 1986, 1991, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #ifndef lint
  33 static const char copyright[] =
  34 "@(#) Copyright (c) 1980, 1986, 1991, 1993\n\
  35         The Regents of the University of California.  All rights reserved.\n";
  36 #endif /* not lint */
  37
  38 #if 0
  39 #ifndef lint
  40 static char sccsid[] = "@(#)vmstat.c    8.1 (Berkeley) 6/6/93";
  41 #endif /* not lint */
  42 #endif
  43
  44 #include <sys/cdefs.h>
  45 __FBSDID("$FreeBSD$");
  46
  47 #include <sys/param.h>
  48 #include <sys/proc.h>
  49 #include <sys/uio.h>
  50 #include <sys/namei.h>
  51 #include <sys/malloc.h>
  52 #include <sys/signal.h>
  53 #include <sys/fcntl.h>
  54 #include <sys/ioctl.h>
  55 #include <sys/resource.h>
  56 #include <sys/sysctl.h>
  57 #include <sys/time.h>
  58 #include <sys/user.h>
  59 #define _WANT_VMMETER
  60 #include <sys/vmmeter.h>
  61 #include <sys/pcpu.h>
  62
  63 #include <vm/vm_param.h>
  64
  65 #include <ctype.h>
  66 #include <devstat.h>
  67 #include <err.h>
  68 #include <errno.h>
  69 #include <inttypes.h>
  70 #include <kvm.h>
  71 #include <limits.h>
  72 #include <memstat.h>
  73 #include <nlist.h>
  74 #include <paths.h>
  75 #include <stdio.h>
  76 #include <stdlib.h>
  77 #include <string.h>
  78 #include <sysexits.h>
  79 #include <time.h>
  80 #include <unistd.h>
  81 #include <libutil.h>
  82 #include <libxo/xo.h>
  83
  84 #define VMSTAT_XO_VERSION "1"
  85
  86 static char da[] = "da";
  87
  88 enum x_stats { X_SUM, X_HZ, X_STATHZ, X_NCHSTATS, X_INTRNAMES, X_SINTRNAMES,
  89     X_INTRCNT, X_SINTRCNT, X_NINTRCNT };
  90
  91 static struct nlist namelist[] = {
  92         [X_SUM] = { .n_name = "_vm_cnt", },
  93         [X_HZ] = { .n_name = "_hz", },
  94         [X_STATHZ] = { .n_name = "_stathz", },
  95         [X_NCHSTATS] = { .n_name = "_nchstats", },
  96         [X_INTRNAMES] = { .n_name = "_intrnames", },
  97         [X_SINTRNAMES] = { .n_name = "_sintrnames", },
  98         [X_INTRCNT] = { .n_name = "_intrcnt", },
  99         [X_SINTRCNT] = { .n_name = "_sintrcnt", },
 100         [X_NINTRCNT] = { .n_name = "_nintrcnt", },
 101         { .n_name = NULL, },
 102 };
 103
 104 static struct devstat_match *matches;
 105 static struct device_selection *dev_select;
 106 static struct statinfo cur, last;
 107 static devstat_select_mode select_mode;
 108 static size_t size_cp_times;
 109 static long *cur_cp_times, *last_cp_times;
 110 static long generation, select_generation;
 111 static int hz, hdrcnt, maxshowdevs;
 112 static int num_devices, num_devices_specified;
 113 static int num_matches, num_selected, num_selections;
 114 static char **specified_devices;
 115
 116 static struct __vmmeter {
 117         uint64_t v_swtch;
 118         uint64_t v_trap;
 119         uint64_t v_syscall;
 120         uint64_t v_intr;
 121         uint64_t v_soft;
 122         uint64_t v_vm_faults;
 123         uint64_t v_io_faults;
 124         uint64_t v_cow_faults;
 125         uint64_t v_cow_optim;
 126         uint64_t v_zfod;
 127         uint64_t v_ozfod;
 128         uint64_t v_swapin;
 129         uint64_t v_swapout;
 130         uint64_t v_swappgsin;
 131         uint64_t v_swappgsout;
 132         uint64_t v_vnodein;
 133         uint64_t v_vnodeout;
 134         uint64_t v_vnodepgsin;
 135         uint64_t v_vnodepgsout;
 136         uint64_t v_intrans;
 137         uint64_t v_reactivated;
 138         uint64_t v_pdwakeups;
 139         uint64_t v_pdpages;
 140         uint64_t v_pdshortfalls;
 141         uint64_t v_dfree;
 142         uint64_t v_pfree;
 143         uint64_t v_tfree;
 144         uint64_t v_forks;
 145         uint64_t v_vforks;
 146         uint64_t v_rforks;
 147         uint64_t v_kthreads;
 148         uint64_t v_forkpages;
 149         uint64_t v_vforkpages;
 150         uint64_t v_rforkpages;
 151         uint64_t v_kthreadpages;
 152         u_int v_page_size;
 153         u_int v_page_count;
 154         u_int v_free_reserved;
 155         u_int v_free_target;
 156         u_int v_free_min;
 157         u_int v_free_count;
 158         u_int v_wire_count;
 159         u_long v_user_wire_count;
 160         u_int v_active_count;
 161         u_int v_inactive_target;
 162         u_int v_inactive_count;
 163         u_int v_laundry_count;
 164         u_int v_pageout_free_min;
 165         u_int v_interrupt_free_min;
 166         u_int v_free_severe;
 167 } sum, osum;
 168
 169 #define VMSTAT_DEFAULT_LINES    20      /* Default number of `winlines'. */
 170 static volatile sig_atomic_t wresized;          /* Tty resized when non-zero. */
 171 static int winlines = VMSTAT_DEFAULT_LINES; /* Current number of tty rows. */
 172
 173 static int      aflag;
 174 static int      nflag;
 175 static int      Pflag;
 176 static int      hflag;
 177
 178 static kvm_t    *kd;
 179
 180 #define FORKSTAT        0x01
 181 #define INTRSTAT        0x02
 182 #define MEMSTAT         0x04
 183 #define SUMSTAT         0x08
 184 #define TIMESTAT        0x10
 185 #define VMSTAT          0x20
 186 #define ZMEMSTAT        0x40
 187 #define OBJSTAT         0x80
 188
 189 static void     cpustats(void);
 190 static void     pcpustats(u_long, int);
 191 static void     devstats(void);
 192 static void     doforkst(void);
 193 static void     dointr(unsigned int, int);
 194 static void     doobjstat(void);
 195 static void     dosum(void);
 196 static void     dovmstat(unsigned int, int);
 197 static void     domemstat_malloc(void);
 198 static void     domemstat_zone(void);
 199 static void     kread(int, void *, size_t);
 200 static void     kreado(int, void *, size_t, size_t);
 201 static void     kreadptr(uintptr_t, void *, size_t);
 202 static void     needhdr(int);
 203 static void     needresize(int);
 204 static void     doresize(void);
 205 static void     printhdr(int, u_long);
 206 static void     usage(void);
 207
 208 static long     pct(long, long);
 209 static long long        getuptime(void);
 210
 211 static char     **getdrivedata(char **);
 212
 213 int
 214 main(int argc, char *argv[])
 215 {
 216         char *bp, *buf, *memf, *nlistf;
 217         float f;
 218         int bufsize, c, reps, todo;
 219         size_t len;
 220         unsigned int interval;
 221         char errbuf[_POSIX2_LINE_MAX];
 222
 223         memf = nlistf = NULL;
 224         interval = reps = todo = 0;
 225         maxshowdevs = 2;
 226         hflag = isatty(1);
 227
 228         argc = xo_parse_args(argc, argv);
 229         if (argc < 0)
 230                 return (argc);
 231
 232         while ((c = getopt(argc, argv, "ac:fhHiM:mN:n:oPp:sw:z")) != -1) {
 233                 switch (c) {
 234                 case 'a':
 235                         aflag++;
 236                         break;
 237                 case 'c':
 238                         reps = atoi(optarg);
 239                         break;
 240                 case 'P':
 241                         Pflag++;
 242                         break;
 243                 case 'f':
 244                         todo |= FORKSTAT;
 245                         break;
 246                 case 'h':
 247                         hflag = 1;
 248                         break;
 249                 case 'H':
 250                         hflag = 0;
 251                         break;
 252                 case 'i':
 253                         todo |= INTRSTAT;
 254                         break;
 255                 case 'M':
 256                         memf = optarg;
 257                         break;
 258                 case 'm':
 259                         todo |= MEMSTAT;
 260                         break;
 261                 case 'N':
 262                         nlistf = optarg;
 263                         break;
 264                 case 'n':
 265                         nflag = 1;
 266                         maxshowdevs = atoi(optarg);
 267                         if (maxshowdevs < 0)
 268                                 xo_errx(1, "number of devices %d is < 0",
 269                                     maxshowdevs);
 270                         break;
 271                 case 'o':
 272                         todo |= OBJSTAT;
 273                         break;
 274                 case 'p':
 275                         if (devstat_buildmatch(optarg, &matches, &num_matches)
 276                             != 0)
 277                                 xo_errx(1, "%s", devstat_errbuf);
 278                         break;
 279                 case 's':
 280                         todo |= SUMSTAT;
 281                         break;
 282                 case 'w':
 283                         /* Convert to milliseconds. */
 284                         f = atof(optarg);
 285                         interval = f * 1000;
 286                         break;
 287                 case 'z':
 288                         todo |= ZMEMSTAT;
 289                         break;
 290                 case '?':
 291                 default:
 292                         usage();
 293                 }
 294         }
 295         argc -= optind;
 296         argv += optind;
 297
 298         xo_set_version(VMSTAT_XO_VERSION);
 299         if (todo == 0)
 300                 todo = VMSTAT;
 301
 302         if (memf != NULL) {
 303                 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
 304                 if (kd == NULL)
 305                         xo_errx(1, "kvm_openfiles: %s", errbuf);
 306         }
 307
 308 retry_nlist:
 309         if (kd != NULL && (c = kvm_nlist(kd, namelist)) != 0) {
 310                 if (c > 0) {
 311                         bufsize = 0;
 312                         len = 0;
 313
 314                         /*
 315                          * 'cnt' was renamed to 'vm_cnt'.  If 'vm_cnt' is not
 316                          * found try looking up older 'cnt' symbol.
 317                          * */
 318                         if (namelist[X_SUM].n_type == 0 &&
 319                             strcmp(namelist[X_SUM].n_name, "_vm_cnt") == 0) {
 320                                 namelist[X_SUM].n_name = "_cnt";
 321                                 goto retry_nlist;
 322                         }
 323
 324                         /*
 325                          * 'nintrcnt' doesn't exist in older kernels, but
 326                          * that isn't fatal.
 327                          */
 328                         if (namelist[X_NINTRCNT].n_type == 0 && c == 1)
 329                                 goto nlist_ok;
 330
 331                         for (c = 0; c < (int)(nitems(namelist)); c++)
 332                                 if (namelist[c].n_type == 0)
 333                                         bufsize += strlen(namelist[c].n_name)
 334                                             + 1;
 335                         bufsize += len + 1;
 336                         buf = bp = alloca(bufsize);
 337
 338                         for (c = 0; c < (int)(nitems(namelist)); c++)
 339                                 if (namelist[c].n_type == 0) {
 340                                         xo_error(" %s",
 341                                             namelist[c].n_name);
 342                                         len = strlen(namelist[c].n_name);
 343                                         *bp++ = ' ';
 344                                         memcpy(bp, namelist[c].n_name, len);
 345                                         bp += len;
 346                                 }
 347                         *bp = '\0';
 348                         xo_error("undefined symbols:\n", buf);
 349                 } else
 350                         xo_warnx("kvm_nlist: %s", kvm_geterr(kd));
 351                 xo_finish();
 352                 exit(1);
 353         }
 354 nlist_ok:
 355         if (kd && Pflag)
 356                 xo_errx(1, "Cannot use -P with crash dumps");
 357
 358         if (todo & VMSTAT) {
 359                 /*
 360                  * Make sure that the userland devstat version matches the
 361                  * kernel devstat version.  If not, exit and print a
 362                  * message informing the user of his mistake.
 363                  */
 364                 if (devstat_checkversion(NULL) < 0)
 365                         xo_errx(1, "%s", devstat_errbuf);
 366
 367
 368                 argv = getdrivedata(argv);
 369         }
 370
 371         if (*argv) {
 372                 f = atof(*argv);
 373                 interval = f * 1000;
 374                 if (*++argv)
 375                         reps = atoi(*argv);
 376         }
 377
 378         if (interval) {
 379                 if (!reps)
 380                         reps = -1;
 381         } else if (reps)
 382                 interval = 1 * 1000;
 383
 384         if (todo & FORKSTAT)
 385                 doforkst();
 386         if (todo & MEMSTAT)
 387                 domemstat_malloc();
 388         if (todo & ZMEMSTAT)
 389                 domemstat_zone();
 390         if (todo & SUMSTAT)
 391                 dosum();
 392         if (todo & OBJSTAT)
 393                 doobjstat();
 394         if (todo & INTRSTAT)
 395                 dointr(interval, reps);
 396         if (todo & VMSTAT)
 397                 dovmstat(interval, reps);
 398         xo_finish();
 399         exit(0);
 400 }
 401
 402 static int
 403 mysysctl(const char *name, void *oldp, size_t *oldlenp)
 404 {
 405         int error;
 406
 407         error = sysctlbyname(name, oldp, oldlenp, NULL, 0);
 408         if (error != 0 && errno != ENOMEM)
 409                 xo_err(1, "sysctl(%s)", name);
 410         return (error);
 411 }
 412
 413 static char **
 414 getdrivedata(char **argv)
 415 {
 416
 417         if ((num_devices = devstat_getnumdevs(NULL)) < 0)
 418                 xo_errx(1, "%s", devstat_errbuf);
 419
 420         cur.dinfo = (struct devinfo *)calloc(1, sizeof(struct devinfo));
 421         last.dinfo = (struct devinfo *)calloc(1, sizeof(struct devinfo));
 422
 423         if (devstat_getdevs(NULL, &cur) == -1)
 424                 xo_errx(1, "%s", devstat_errbuf);
 425
 426         num_devices = cur.dinfo->numdevs;
 427         generation = cur.dinfo->generation;
 428
 429         specified_devices = malloc(sizeof(char *));
 430         for (num_devices_specified = 0; *argv; ++argv) {
 431                 if (isdigit(**argv))
 432                         break;
 433                 num_devices_specified++;
 434                 specified_devices = reallocf(specified_devices,
 435                     sizeof(char *) * num_devices_specified);
 436                 if (specified_devices == NULL) {
 437                         xo_errx(1, "%s", "reallocf (specified_devices)");
 438                 }
 439                 specified_devices[num_devices_specified - 1] = *argv;
 440         }
 441         dev_select = NULL;
 442
 443         if (nflag == 0 && maxshowdevs < num_devices_specified)
 444                 maxshowdevs = num_devices_specified;
 445
 446         /*
 447          * People are generally only interested in disk statistics when
 448          * they're running vmstat.  So, that's what we're going to give
 449          * them if they don't specify anything by default.  We'll also give
 450          * them any other random devices in the system so that we get to
 451          * maxshowdevs devices, if that many devices exist.  If the user
 452          * specifies devices on the command line, either through a pattern
 453          * match or by naming them explicitly, we will give the user only
 454          * those devices.
 455          */
 456         if ((num_devices_specified == 0) && (num_matches == 0)) {
 457                 if (devstat_buildmatch(da, &matches, &num_matches) != 0)
 458                         xo_errx(1, "%s", devstat_errbuf);
 459                 select_mode = DS_SELECT_ADD;
 460         } else
 461                 select_mode = DS_SELECT_ONLY;
 462
 463         /*
 464          * At this point, selectdevs will almost surely indicate that the
 465          * device list has changed, so we don't look for return values of 0
 466          * or 1.  If we get back -1, though, there is an error.
 467          */
 468         if (devstat_selectdevs(&dev_select, &num_selected, &num_selections,
 469             &select_generation, generation, cur.dinfo->devices,
 470             num_devices, matches, num_matches, specified_devices,
 471             num_devices_specified, select_mode,
 472             maxshowdevs, 0) == -1)
 473                 xo_errx(1, "%s", devstat_errbuf);
 474
 475         return(argv);
 476 }
 477
 478 /* Return system uptime in nanoseconds */
 479 static long long
 480 getuptime(void)
 481 {
 482         struct timespec sp;
 483
 484         (void)clock_gettime(CLOCK_UPTIME, &sp);
 485         return((long long)sp.tv_sec * 1000000000LL + sp.tv_nsec);
 486 }
 487
 488 static void
 489 fill_vmmeter(struct __vmmeter *vmmp)
 490 {
 491         struct vmmeter vm_cnt;
 492         size_t size;
 493
 494         if (kd != NULL) {
 495                 kread(X_SUM, &vm_cnt, sizeof(vm_cnt));
 496 #define GET_COUNTER(name) \
 497                 vmmp->name = kvm_counter_u64_fetch(kd, (u_long)vm_cnt.name)
 498                 GET_COUNTER(v_swtch);
 499                 GET_COUNTER(v_trap);
 500                 GET_COUNTER(v_syscall);
 501                 GET_COUNTER(v_intr);
 502                 GET_COUNTER(v_soft);
 503                 GET_COUNTER(v_vm_faults);
 504                 GET_COUNTER(v_io_faults);
 505                 GET_COUNTER(v_cow_faults);
 506                 GET_COUNTER(v_cow_optim);
 507                 GET_COUNTER(v_zfod);
 508                 GET_COUNTER(v_ozfod);
 509                 GET_COUNTER(v_swapin);
 510                 GET_COUNTER(v_swapout);
 511                 GET_COUNTER(v_swappgsin);
 512                 GET_COUNTER(v_swappgsout);
 513                 GET_COUNTER(v_vnodein);
 514                 GET_COUNTER(v_vnodeout);
 515                 GET_COUNTER(v_vnodepgsin);
 516                 GET_COUNTER(v_vnodepgsout);
 517                 GET_COUNTER(v_intrans);
 518                 GET_COUNTER(v_tfree);
 519                 GET_COUNTER(v_forks);
 520                 GET_COUNTER(v_vforks);
 521                 GET_COUNTER(v_rforks);
 522                 GET_COUNTER(v_kthreads);
 523                 GET_COUNTER(v_forkpages);
 524                 GET_COUNTER(v_vforkpages);
 525                 GET_COUNTER(v_rforkpages);
 526                 GET_COUNTER(v_kthreadpages);
 527 #undef GET_COUNTER
 528         } else {
 529 #define GET_VM_STATS(cat, name) do {                                    \
 530         size = sizeof(vmmp->name);                                      \
 531         mysysctl("vm.stats." #cat "." #name, &vmmp->name, &size);       \
 532 } while (0)
 533                 /* sys */
 534                 GET_VM_STATS(sys, v_swtch);
 535                 GET_VM_STATS(sys, v_trap);
 536                 GET_VM_STATS(sys, v_syscall);
 537                 GET_VM_STATS(sys, v_intr);
 538                 GET_VM_STATS(sys, v_soft);
 539
 540                 /* vm */
 541                 GET_VM_STATS(vm, v_vm_faults);
 542                 GET_VM_STATS(vm, v_io_faults);
 543                 GET_VM_STATS(vm, v_cow_faults);
 544                 GET_VM_STATS(vm, v_cow_optim);
 545                 GET_VM_STATS(vm, v_zfod);
 546                 GET_VM_STATS(vm, v_ozfod);
 547                 GET_VM_STATS(vm, v_swapin);
 548                 GET_VM_STATS(vm, v_swapout);
 549                 GET_VM_STATS(vm, v_swappgsin);
 550                 GET_VM_STATS(vm, v_swappgsout);
 551                 GET_VM_STATS(vm, v_vnodein);
 552                 GET_VM_STATS(vm, v_vnodeout);
 553                 GET_VM_STATS(vm, v_vnodepgsin);
 554                 GET_VM_STATS(vm, v_vnodepgsout);
 555                 GET_VM_STATS(vm, v_intrans);
 556                 GET_VM_STATS(vm, v_reactivated);
 557                 GET_VM_STATS(vm, v_pdwakeups);
 558                 GET_VM_STATS(vm, v_pdpages);
 559                 GET_VM_STATS(vm, v_pdshortfalls);
 560                 GET_VM_STATS(vm, v_dfree);
 561                 GET_VM_STATS(vm, v_pfree);
 562                 GET_VM_STATS(vm, v_tfree);
 563                 GET_VM_STATS(vm, v_page_size);
 564                 GET_VM_STATS(vm, v_page_count);
 565                 GET_VM_STATS(vm, v_free_reserved);
 566                 GET_VM_STATS(vm, v_free_target);
 567                 GET_VM_STATS(vm, v_free_min);
 568                 GET_VM_STATS(vm, v_free_count);
 569                 GET_VM_STATS(vm, v_wire_count);
 570                 GET_VM_STATS(vm, v_user_wire_count);
 571                 GET_VM_STATS(vm, v_active_count);
 572                 GET_VM_STATS(vm, v_inactive_target);
 573                 GET_VM_STATS(vm, v_inactive_count);
 574                 GET_VM_STATS(vm, v_laundry_count);
 575                 GET_VM_STATS(vm, v_pageout_free_min);
 576                 GET_VM_STATS(vm, v_interrupt_free_min);
 577                 /*GET_VM_STATS(vm, v_free_severe);*/
 578                 GET_VM_STATS(vm, v_forks);
 579                 GET_VM_STATS(vm, v_vforks);
 580                 GET_VM_STATS(vm, v_rforks);
 581                 GET_VM_STATS(vm, v_kthreads);
 582                 GET_VM_STATS(vm, v_forkpages);
 583                 GET_VM_STATS(vm, v_vforkpages);
 584                 GET_VM_STATS(vm, v_rforkpages);
 585                 GET_VM_STATS(vm, v_kthreadpages);
 586 #undef GET_VM_STATS
 587         }
 588 }
 589
 590 static void
 591 fill_vmtotal(struct vmtotal *vmtp)
 592 {
 593         size_t size;
 594
 595         if (kd != NULL) {
 596                 /* XXX fill vmtp */
 597                 xo_errx(1, "not implemented");
 598         } else {
 599                 size = sizeof(*vmtp);
 600                 mysysctl("vm.vmtotal", vmtp, &size);
 601                 if (size != sizeof(*vmtp))
 602                         xo_errx(1, "vm.total size mismatch");
 603         }
 604 }
 605
 606 /* Determine how many cpu columns, and what index they are in kern.cp_times */
 607 static int
 608 getcpuinfo(u_long *maskp, int *maxidp)
 609 {
 610         long *times;
 611         u_long mask;
 612         size_t size;
 613         int empty, i, j, maxcpu, maxid, ncpus;
 614
 615         if (kd != NULL)
 616                 xo_errx(1, "not implemented");
 617         mask = 0;
 618         ncpus = 0;
 619         size = sizeof(maxcpu);
 620         mysysctl("kern.smp.maxcpus", &maxcpu, &size);
 621         if (size != sizeof(maxcpu))
 622                 xo_errx(1, "sysctl kern.smp.maxcpus");
 623         size = sizeof(long) * maxcpu * CPUSTATES;
 624         times = malloc(size);
 625         if (times == NULL)
 626                 xo_err(1, "malloc %zd bytes", size);
 627         mysysctl("kern.cp_times", times, &size);
 628         maxid = (size / CPUSTATES / sizeof(long)) - 1;
 629         for (i = 0; i <= maxid; i++) {
 630                 empty = 1;
 631                 for (j = 0; empty && j < CPUSTATES; j++) {
 632                         if (times[i * CPUSTATES + j] != 0)
 633                                 empty = 0;
 634                 }
 635                 if (!empty) {
 636                         mask |= (1ul << i);
 637                         ncpus++;
 638                 }
 639         }
 640         if (maskp)
 641                 *maskp = mask;
 642         if (maxidp)
 643                 *maxidp = maxid;
 644         return (ncpus);
 645 }
 646
 647
 648 static void
 649 prthuman(const char *name, uint64_t val, int size, int flags)
 650 {
 651         char buf[10];
 652         char fmt[128];
 653
 654         snprintf(fmt, sizeof(fmt), "{:%s/%%*s}", name);
 655
 656         if (size < 5 || size > 9)
 657                 xo_errx(1, "doofus");
 658         flags |= HN_NOSPACE | HN_DECIMAL;
 659         humanize_number(buf, size, val, "", HN_AUTOSCALE, flags);
 660         xo_attr("value", "%ju", (uintmax_t) val);
 661         xo_emit(fmt, size, buf);
 662 }
 663
 664 static void
 665 dovmstat(unsigned int interval, int reps)
 666 {
 667         struct clockinfo clockrate;
 668         struct vmtotal total;
 669         struct devinfo *tmp_dinfo;
 670         u_long cpumask;
 671         size_t size;
 672         time_t uptime, halfuptime;
 673         int ncpus, maxid, rate_adj, retval;
 674
 675         uptime = getuptime() / 1000000000LL;
 676         halfuptime = uptime / 2;
 677         rate_adj = 1;
 678         ncpus = 1;
 679         maxid = 0;
 680         cpumask = 0;
 681
 682         /*
 683          * If the user stops the program (control-Z) and then resumes it,
 684          * print out the header again.
 685          */
 686         (void)signal(SIGCONT, needhdr);
 687
 688         /*
 689          * If our standard output is a tty, then install a SIGWINCH handler
 690          * and set wresized so that our first iteration through the main
 691          * vmstat loop will peek at the terminal's current rows to find out
 692          * how many lines can fit in a screenful of output.
 693          */
 694         if (isatty(fileno(stdout)) != 0) {
 695                 wresized = 1;
 696                 (void)signal(SIGWINCH, needresize);
 697         } else {
 698                 wresized = 0;
 699                 winlines = VMSTAT_DEFAULT_LINES;
 700         }
 701
 702         if (kd != NULL) {
 703                 if (namelist[X_STATHZ].n_type != 0 &&
 704                     namelist[X_STATHZ].n_value != 0)
 705                         kread(X_STATHZ, &hz, sizeof(hz));
 706                 if (!hz)
 707                         kread(X_HZ, &hz, sizeof(hz));
 708         } else {
 709                 size = sizeof(clockrate);
 710                 mysysctl("kern.clockrate", &clockrate, &size);
 711                 if (size != sizeof(clockrate))
 712                         xo_errx(1, "clockrate size mismatch");
 713                 hz = clockrate.hz;
 714         }
 715
 716         if (Pflag) {
 717                 ncpus = getcpuinfo(&cpumask, &maxid);
 718                 size_cp_times = sizeof(long) * (maxid + 1) * CPUSTATES;
 719                 cur_cp_times = calloc(1, size_cp_times);
 720                 last_cp_times = calloc(1, size_cp_times);
 721         }
 722         for (hdrcnt = 1;;) {
 723                 if (!--hdrcnt)
 724                         printhdr(maxid, cpumask);
 725                 if (kd != NULL) {
 726                         if (kvm_getcptime(kd, cur.cp_time) < 0)
 727                                 xo_errx(1, "kvm_getcptime: %s", kvm_geterr(kd));
 728                 } else {
 729                         size = sizeof(cur.cp_time);
 730                         mysysctl("kern.cp_time", &cur.cp_time, &size);
 731                         if (size != sizeof(cur.cp_time))
 732                                 xo_errx(1, "cp_time size mismatch");
 733                 }
 734                 if (Pflag) {
 735                         size = size_cp_times;
 736                         mysysctl("kern.cp_times", cur_cp_times, &size);
 737                         if (size != size_cp_times)
 738                                 xo_errx(1, "cp_times mismatch");
 739                 }
 740
 741                 tmp_dinfo = last.dinfo;
 742                 last.dinfo = cur.dinfo;
 743                 cur.dinfo = tmp_dinfo;
 744                 last.snap_time = cur.snap_time;
 745
 746                 /*
 747                  * Here what we want to do is refresh our device stats.
 748                  * getdevs() returns 1 when the device list has changed.
 749                  * If the device list has changed, we want to go through
 750                  * the selection process again, in case a device that we
 751                  * were previously displaying has gone away.
 752                  */
 753                 switch (devstat_getdevs(NULL, &cur)) {
 754                 case -1:
 755                         xo_errx(1, "%s", devstat_errbuf);
 756                         break;
 757                 case 1:
 758                         num_devices = cur.dinfo->numdevs;
 759                         generation = cur.dinfo->generation;
 760
 761                         retval = devstat_selectdevs(&dev_select, &num_selected,
 762                             &num_selections, &select_generation,
 763                             generation, cur.dinfo->devices,
 764                             num_devices, matches, num_matches,
 765                             specified_devices,
 766                             num_devices_specified, select_mode,
 767                             maxshowdevs, 0);
 768                         switch (retval) {
 769                         case -1:
 770                                 xo_errx(1, "%s", devstat_errbuf);
 771                                 break;
 772                         case 1:
 773                                 printhdr(maxid, cpumask);
 774                                 break;
 775                         default:
 776                                 break;
 777                         }
 778                         break;
 779                 default:
 780                         break;
 781                 }
 782
 783                 fill_vmmeter(&sum);
 784                 fill_vmtotal(&total);
 785                 xo_open_container("processes");
 786                 xo_emit("{:runnable/%2d} {:waiting/%2ld} "
 787                     "{:swapped-out/%2ld}", total.t_rq - 1, total.t_dw +
 788                     total.t_pw, total.t_sw);
 789                 xo_close_container("processes");
 790                 xo_open_container("memory");
 791 #define vmstat_pgtok(a) ((uintmax_t)(a) * (sum.v_page_size >> 10))
 792 #define rate(x) (((x) * rate_adj + halfuptime) / uptime)        /* round */
 793                 if (hflag) {
 794                         prthuman("available-memory",
 795                             total.t_avm * (uint64_t)sum.v_page_size, 5, HN_B);
 796                         prthuman("free-memory",
 797                             total.t_free * (uint64_t)sum.v_page_size, 5, HN_B);
 798                         prthuman("total-page-faults",
 799                             (unsigned long)rate(sum.v_vm_faults -
 800                             osum.v_vm_faults), 5, 0);
 801                         xo_emit(" ");
 802                 } else {
 803                         xo_emit(" ");
 804                         xo_emit("{:available-memory/%7ju}",
 805                             vmstat_pgtok(total.t_avm));
 806                         xo_emit(" ");
 807                         xo_emit("{:free-memory/%7ju}",
 808                             vmstat_pgtok(total.t_free));
 809                         xo_emit(" ");
 810                         xo_emit("{:total-page-faults/%5lu} ",
 811                             (unsigned long)rate(sum.v_vm_faults -
 812                             osum.v_vm_faults));
 813                 }
 814                 xo_close_container("memory");
 815
 816                 xo_open_container("paging-rates");
 817                 xo_emit("{:page-reactivated/%3lu} ",
 818                     (unsigned long)rate(sum.v_reactivated -
 819                     osum.v_reactivated));
 820                 xo_emit("{:paged-in/%3lu} ",
 821                     (unsigned long)rate(sum.v_swapin + sum.v_vnodein -
 822                     (osum.v_swapin + osum.v_vnodein)));
 823                 xo_emit("{:paged-out/%3lu}",
 824                     (unsigned long)rate(sum.v_swapout + sum.v_vnodeout -
 825                     (osum.v_swapout + osum.v_vnodeout)));
 826                 if (hflag) {
 827                         prthuman("freed",
 828                             (unsigned long)rate(sum.v_tfree - osum.v_tfree),
 829                             5, 0);
 830                         prthuman("scanned",
 831                             (unsigned long)rate(sum.v_pdpages - osum.v_pdpages),
 832                             5, 0);
 833                         xo_emit(" ");
 834                 } else {
 835                         xo_emit(" ");
 836                         xo_emit("{:freed/%5lu} ",
 837                             (unsigned long)rate(sum.v_tfree - osum.v_tfree));
 838                         xo_emit("{:scanned/%4lu} ",
 839                             (unsigned long)rate(sum.v_pdpages - osum.v_pdpages));
 840                 }
 841                 xo_close_container("paging-rates");
 842
 843                 devstats();
 844                 xo_open_container("fault-rates");
 845                 xo_emit("{:interrupts/%4lu}",
 846                     (unsigned long)rate(sum.v_intr - osum.v_intr));
 847                 if (hflag) {
 848                         prthuman("system-calls",
 849                             (unsigned long)rate(sum.v_syscall - osum.v_syscall),
 850                             5, 0);
 851                         prthuman("context-switches",
 852                             (unsigned long)rate(sum.v_swtch - osum.v_swtch),
 853                             5, 0);
 854                 } else {
 855                         xo_emit(" ");
 856                         xo_emit("{:system-calls/%5lu} "
 857                             "{:context-switches/%5lu}",
 858                             (unsigned long)rate(sum.v_syscall - osum.v_syscall),
 859                             (unsigned long)rate(sum.v_swtch - osum.v_swtch));
 860                 }
 861                 xo_close_container("fault-rates");
 862                 if (Pflag)
 863                         pcpustats(cpumask, maxid);
 864                 else
 865                         cpustats();
 866                 xo_emit("\n");
 867                 xo_flush();
 868                 if (reps >= 0 && --reps <= 0)
 869                         break;
 870                 osum = sum;
 871                 uptime = interval;
 872                 rate_adj = 1000;
 873                 /*
 874                  * We round upward to avoid losing low-frequency events
 875                  * (i.e., >= 1 per interval but < 1 per millisecond).
 876                  */
 877                 if (interval != 1)
 878                         halfuptime = (uptime + 1) / 2;
 879                 else
 880                         halfuptime = 0;
 881                 (void)usleep(interval * 1000);
 882         }
 883 }
 884
 885 static void
 886 printhdr(int maxid, u_long cpumask)
 887 {
 888         int i, num_shown;
 889
 890         num_shown = MIN(num_selected, maxshowdevs);
 891         if (hflag)
 892                 xo_emit(" {T:procs}    {T:memory}    {T:/page%*s}", 19, "");
 893         else
 894                 xo_emit("{T:procs}     {T:memory}       {T:/page%*s}", 19, "");
 895         if (num_shown > 1)
 896                 xo_emit("   {T:/disks %*s}  ", num_shown * 4 - 7, "");
 897         else if (num_shown == 1)
 898                 xo_emit("   {T:disks}");
 899         xo_emit(" {T:faults}      ");
 900         if (Pflag) {
 901                 for (i = 0; i <= maxid; i++) {
 902                         if (cpumask & (1ul << i))
 903                                 xo_emit("  {T:/cpu%d}   ", i);
 904                 }
 905                 xo_emit("\n");
 906         } else
 907                 xo_emit(" {T:cpu}\n");
 908         if (hflag) {
 909                 xo_emit(" {T:r}  {T:b}  {T:w}  {T:avm}  {T:fre}  {T:flt}  {T:re}"
 910                     "  {T:pi}  {T:po}   {T:fr}   {T:sr} ");
 911         } else {
 912                 xo_emit("{T:r} {T:b} {T:w}     {T:avm}     {T:fre}  {T:flt}  "
 913                     "{T:re}  {T:pi}  {T:po}    {T:fr}   {T:sr} ");
 914         }
 915         for (i = 0; i < num_devices; i++)
 916                 if ((dev_select[i].selected) &&
 917                     (dev_select[i].selected <= maxshowdevs))
 918                         xo_emit("{T:/%c%c%d} ", dev_select[i].device_name[0],
 919                             dev_select[i].device_name[1],
 920                             dev_select[i].unit_number);
 921         xo_emit("  {T:in}   {T:sy}   {T:cs}");
 922         if (Pflag) {
 923                 for (i = 0; i <= maxid; i++) {
 924                         if (cpumask & (1ul << i))
 925                                 xo_emit(" {T:us} {T:sy} {T:id}");
 926                 }
 927                 xo_emit("\n");
 928         } else
 929                 xo_emit(" {T:us} {T:sy} {T:id}\n");
 930         if (wresized != 0)
 931                 doresize();
 932         hdrcnt = winlines;
 933 }
 934
 935 /*
 936  * Force a header to be prepended to the next output.
 937  */
 938 static void
 939 needhdr(int dummy __unused)
 940 {
 941
 942         hdrcnt = 1;
 943 }
 944
 945 /*
 946  * When the terminal is resized, force an update of the maximum number of rows
 947  * printed between each header repetition.  Then force a new header to be
 948  * prepended to the next output.
 949  */
 950 void
 951 needresize(int signo __unused)
 952 {
 953
 954         wresized = 1;
 955         hdrcnt = 1;
 956 }
 957
 958 /*
 959  * Update the global `winlines' count of terminal rows.
 960  */
 961 void
 962 doresize(void)
 963 {
 964         struct winsize w;
 965         int status;
 966
 967         for (;;) {
 968                 status = ioctl(fileno(stdout), TIOCGWINSZ, &w);
 969                 if (status == -1 && errno == EINTR)
 970                         continue;
 971                 else if (status == -1)
 972                         xo_err(1, "ioctl");
 973                 if (w.ws_row > 3)
 974                         winlines = w.ws_row - 3;
 975                 else
 976                         winlines = VMSTAT_DEFAULT_LINES;
 977                 break;
 978         }
 979
 980         /*
 981          * Inhibit doresize() calls until we are rescheduled by SIGWINCH.
 982          */
 983         wresized = 0;
 984 }
 985
 986 static long
 987 pct(long top, long bot)
 988 {
 989         long ans;
 990
 991         if (bot == 0)
 992                 return(0);
 993         ans = (quad_t)top * 100 / bot;
 994         return (ans);
 995 }
 996
 997 #define PCT(top, bot) pct((long)(top), (long)(bot))
 998
 999 static void
1000 dosum(void)
1001 {
1002         struct nchstats lnchstats;
1003         size_t size;
1004         long nchtotal;
1005
1006         fill_vmmeter(&sum);
1007         xo_open_container("summary-statistics");
1008         xo_emit("{:context-switches/%9u} {N:cpu context switches}\n",
1009             sum.v_swtch);
1010         xo_emit("{:interrupts/%9u} {N:device interrupts}\n",
1011             sum.v_intr);
1012         xo_emit("{:software-interrupts/%9u} {N:software interrupts}\n",
1013             sum.v_soft);
1014         xo_emit("{:traps/%9u} {N:traps}\n", sum.v_trap);
1015         xo_emit("{:system-calls/%9u} {N:system calls}\n",
1016             sum.v_syscall);
1017         xo_emit("{:kernel-threads/%9u} {N:kernel threads created}\n",
1018             sum.v_kthreads);
1019         xo_emit("{:forks/%9u} {N: fork() calls}\n", sum.v_forks);
1020         xo_emit("{:vforks/%9u} {N:vfork() calls}\n",
1021             sum.v_vforks);
1022         xo_emit("{:rforks/%9u} {N:rfork() calls}\n",
1023             sum.v_rforks);
1024         xo_emit("{:swap-ins/%9u} {N:swap pager pageins}\n",
1025             sum.v_swapin);
1026         xo_emit("{:swap-in-pages/%9u} {N:swap pager pages paged in}\n",
1027             sum.v_swappgsin);
1028         xo_emit("{:swap-outs/%9u} {N:swap pager pageouts}\n",
1029             sum.v_swapout);
1030         xo_emit("{:swap-out-pages/%9u} {N:swap pager pages paged out}\n",
1031             sum.v_swappgsout);
1032         xo_emit("{:vnode-page-ins/%9u} {N:vnode pager pageins}\n",
1033             sum.v_vnodein);
1034         xo_emit("{:vnode-page-in-pages/%9u} {N:vnode pager pages paged in}\n",
1035             sum.v_vnodepgsin);
1036         xo_emit("{:vnode-page-outs/%9u} {N:vnode pager pageouts}\n",
1037             sum.v_vnodeout);
1038         xo_emit("{:vnode-page-out-pages/%9u} {N:vnode pager pages paged out}\n",
1039             sum.v_vnodepgsout);
1040         xo_emit("{:page-daemon-wakeups/%9u} {N:page daemon wakeups}\n",
1041             sum.v_pdwakeups);
1042         xo_emit("{:page-daemon-pages/%9u} {N:pages examined by the page "
1043             "daemon}\n", sum.v_pdpages);
1044         xo_emit("{:page-reclamation-shortfalls/%9u} {N:clean page reclamation "
1045             "shortfalls}\n", sum.v_pdshortfalls);
1046         xo_emit("{:reactivated/%9u} {N:pages reactivated by the page daemon}\n",
1047             sum.v_reactivated);
1048         xo_emit("{:copy-on-write-faults/%9u} {N:copy-on-write faults}\n",
1049             sum.v_cow_faults);
1050         xo_emit("{:copy-on-write-optimized-faults/%9u} {N:copy-on-write "
1051             "optimized faults}\n", sum.v_cow_optim);
1052         xo_emit("{:zero-fill-pages/%9u} {N:zero fill pages zeroed}\n",
1053             sum.v_zfod);
1054         xo_emit("{:zero-fill-prezeroed/%9u} {N:zero fill pages prezeroed}\n",
1055             sum.v_ozfod);
1056         xo_emit("{:intransit-blocking/%9u} {N:intransit blocking page faults}\n",
1057             sum.v_intrans);
1058         xo_emit("{:total-faults/%9u} {N:total VM faults taken}\n",
1059             sum.v_vm_faults);
1060         xo_emit("{:faults-requiring-io/%9u} {N:page faults requiring I\\/O}\n",
1061             sum.v_io_faults);
1062         xo_emit("{:faults-from-thread-creation/%9u} {N:pages affected by "
1063             "kernel thread creation}\n", sum.v_kthreadpages);
1064         xo_emit("{:faults-from-fork/%9u} {N:pages affected by  fork}()\n",
1065             sum.v_forkpages);
1066         xo_emit("{:faults-from-vfork/%9u} {N:pages affected by vfork}()\n",
1067             sum.v_vforkpages);
1068         xo_emit("{:pages-rfork/%9u} {N:pages affected by rfork}()\n",
1069             sum.v_rforkpages);
1070         xo_emit("{:pages-freed/%9u} {N:pages freed}\n",
1071             sum.v_tfree);
1072         xo_emit("{:pages-freed-by-daemon/%9u} {N:pages freed by daemon}\n",
1073             sum.v_dfree);
1074         xo_emit("{:pages-freed-on-exit/%9u} {N:pages freed by exiting processes}\n",
1075             sum.v_pfree);
1076         xo_emit("{:active-pages/%9u} {N:pages active}\n",
1077             sum.v_active_count);
1078         xo_emit("{:inactive-pages/%9u} {N:pages inactive}\n",
1079             sum.v_inactive_count);
1080         xo_emit("{:laundry-pages/%9u} {N:pages in the laundry queue}\n",
1081             sum.v_laundry_count);
1082         xo_emit("{:wired-pages/%9u} {N:pages wired down}\n",
1083             sum.v_wire_count);
1084         xo_emit("{:virtual-user-wired-pages/%9lu} {N:virtual user pages wired "
1085             "down}\n", sum.v_user_wire_count);
1086         xo_emit("{:free-pages/%9u} {N:pages free}\n",
1087             sum.v_free_count);
1088         xo_emit("{:bytes-per-page/%9u} {N:bytes per page}\n", sum.v_page_size);
1089         if (kd != NULL) {
1090                 kread(X_NCHSTATS, &lnchstats, sizeof(lnchstats));
1091         } else {
1092                 size = sizeof(lnchstats);
1093                 mysysctl("vfs.cache.nchstats", &lnchstats, &size);
1094                 if (size != sizeof(lnchstats))
1095                         xo_errx(1, "vfs.cache.nchstats size mismatch");
1096         }
1097         nchtotal = lnchstats.ncs_goodhits + lnchstats.ncs_neghits +
1098             lnchstats.ncs_badhits + lnchstats.ncs_falsehits +
1099             lnchstats.ncs_miss + lnchstats.ncs_long;
1100         xo_emit("{:total-name-lookups/%9ld} {N:total name lookups}\n",
1101             nchtotal);
1102         xo_emit("{P:/%9s} {N:cache hits} "
1103             "({:positive-cache-hits/%ld}% pos + "
1104             "{:negative-cache-hits/%ld}% {N:neg}) "
1105             "system {:cache-hit-percent/%ld}% per-directory\n",
1106             "", PCT(lnchstats.ncs_goodhits, nchtotal),
1107             PCT(lnchstats.ncs_neghits, nchtotal),
1108             PCT(lnchstats.ncs_pass2, nchtotal));
1109         xo_emit("{P:/%9s} {L:deletions} {:deletions/%ld}%, "
1110             "{L:falsehits} {:false-hits/%ld}%, "
1111             "{L:toolong} {:too-long/%ld}%\n", "",
1112             PCT(lnchstats.ncs_badhits, nchtotal),
1113             PCT(lnchstats.ncs_falsehits, nchtotal),
1114             PCT(lnchstats.ncs_long, nchtotal));
1115         xo_close_container("summary-statistics");
1116 }
1117
1118 static void
1119 doforkst(void)
1120 {
1121
1122         fill_vmmeter(&sum);
1123         xo_open_container("fork-statistics");
1124         xo_emit("{:fork/%u} {N:forks}, {:fork-pages/%u} {N:pages}, "
1125             "{L:average} {:fork-average/%.2f}\n",
1126             sum.v_forks, sum.v_forkpages,
1127             sum.v_forks == 0 ? 0.0 :
1128             (double)sum.v_forkpages / sum.v_forks);
1129         xo_emit("{:vfork/%u} {N:vforks}, {:vfork-pages/%u} {N:pages}, "
1130             "{L:average} {:vfork-average/%.2f}\n",
1131             sum.v_vforks, sum.v_vforkpages,
1132             sum.v_vforks == 0 ? 0.0 :
1133             (double)sum.v_vforkpages / sum.v_vforks);
1134         xo_emit("{:rfork/%u} {N:rforks}, {:rfork-pages/%u} {N:pages}, "
1135             "{L:average} {:rfork-average/%.2f}\n",
1136             sum.v_rforks, sum.v_rforkpages,
1137             sum.v_rforks == 0 ? 0.0 :
1138             (double)sum.v_rforkpages / sum.v_rforks);
1139         xo_close_container("fork-statistics");
1140 }
1141
1142 static void
1143 devstats(void)
1144 {
1145         long double busy_seconds, transfers_per_second;
1146         long tmp;
1147         int di, dn, state;
1148
1149         for (state = 0; state < CPUSTATES; ++state) {
1150                 tmp = cur.cp_time[state];
1151                 cur.cp_time[state] -= last.cp_time[state];
1152                 last.cp_time[state] = tmp;
1153         }
1154
1155         busy_seconds = cur.snap_time - last.snap_time;
1156
1157         xo_open_list("device");
1158         for (dn = 0; dn < num_devices; dn++) {
1159                 if (dev_select[dn].selected == 0 ||
1160                     dev_select[dn].selected > maxshowdevs)
1161                         continue;
1162
1163                 di = dev_select[dn].position;
1164
1165                 if (devstat_compute_statistics(&cur.dinfo->devices[di],
1166                     &last.dinfo->devices[di], busy_seconds,
1167                     DSM_TRANSFERS_PER_SECOND, &transfers_per_second,
1168                     DSM_NONE) != 0)
1169                         xo_errx(1, "%s", devstat_errbuf);
1170
1171                 xo_open_instance("device");
1172                 xo_emit("{ekq:name/%c%c%d}{:transfers/%3.0Lf} ",
1173                     dev_select[dn].device_name[0],
1174                     dev_select[dn].device_name[1],
1175                     dev_select[dn].unit_number,
1176                     transfers_per_second);
1177                 xo_close_instance("device");
1178         }
1179         xo_close_list("device");
1180 }
1181
1182 static void
1183 percent(const char *name, double pctv, int *over)
1184 {
1185         int l;
1186         char buf[10];
1187         char fmt[128];
1188
1189         snprintf(fmt, sizeof(fmt), " {:%s/%%*s}", name);
1190         l = snprintf(buf, sizeof(buf), "%.0f", pctv);
1191         if (l == 1 && *over) {
1192                 xo_emit(fmt, 1, buf);
1193                 (*over)--;
1194         } else
1195                 xo_emit(fmt, 2, buf);
1196         if (l > 2)
1197                 (*over)++;
1198 }
1199
1200 static void
1201 cpustats(void)
1202 {
1203         double lpct, total;
1204         int state, over;
1205
1206         total = 0;
1207         for (state = 0; state < CPUSTATES; ++state)
1208                 total += cur.cp_time[state];
1209         if (total > 0)
1210                 lpct = 100.0 / total;
1211         else
1212                 lpct = 0.0;
1213         over = 0;
1214         xo_open_container("cpu-statistics");
1215         percent("user", (cur.cp_time[CP_USER] + cur.cp_time[CP_NICE]) * lpct,
1216             &over);
1217         percent("system", (cur.cp_time[CP_SYS] + cur.cp_time[CP_INTR]) * lpct,
1218             &over);
1219         percent("idle", cur.cp_time[CP_IDLE] * lpct, &over);
1220         xo_close_container("cpu-statistics");
1221 }
1222
1223 static void
1224 pcpustats(u_long cpumask, int maxid)
1225 {
1226         double lpct, total;
1227         long tmp;
1228         int i, over, state;
1229
1230         /* devstats does this for cp_time */
1231         for (i = 0; i <= maxid; i++) {
1232                 if ((cpumask & (1ul << i)) == 0)
1233                         continue;
1234                 for (state = 0; state < CPUSTATES; ++state) {
1235                         tmp = cur_cp_times[i * CPUSTATES + state];
1236                         cur_cp_times[i * CPUSTATES + state] -= last_cp_times[i *
1237                             CPUSTATES + state];
1238                         last_cp_times[i * CPUSTATES + state] = tmp;
1239                 }
1240         }
1241
1242         over = 0;
1243         xo_open_list("cpu");
1244         for (i = 0; i <= maxid; i++) {
1245                 if ((cpumask & (1ul << i)) == 0)
1246                         continue;
1247                 xo_open_instance("cpu");
1248                 xo_emit("{ke:name/%d}", i);
1249                 total = 0;
1250                 for (state = 0; state < CPUSTATES; ++state)
1251                         total += cur_cp_times[i * CPUSTATES + state];
1252                 if (total)
1253                         lpct = 100.0 / total;
1254                 else
1255                         lpct = 0.0;
1256                 percent("user", (cur_cp_times[i * CPUSTATES + CP_USER] +
1257                     cur_cp_times[i * CPUSTATES + CP_NICE]) * lpct, &over);
1258                 percent("system", (cur_cp_times[i * CPUSTATES + CP_SYS] +
1259                     cur_cp_times[i * CPUSTATES + CP_INTR]) * lpct, &over);
1260                 percent("idle", cur_cp_times[i * CPUSTATES + CP_IDLE] * lpct,
1261                     &over);
1262                 xo_close_instance("cpu");
1263         }
1264         xo_close_list("cpu");
1265 }
1266
1267 static unsigned int
1268 read_intrcnts(unsigned long **intrcnts)
1269 {
1270         size_t intrcntlen;
1271         uintptr_t kaddr;
1272
1273         if (kd != NULL) {
1274                 kread(X_SINTRCNT, &intrcntlen, sizeof(intrcntlen));
1275                 if ((*intrcnts = malloc(intrcntlen)) == NULL)
1276                         err(1, "malloc()");
1277                 if (namelist[X_NINTRCNT].n_type == 0)
1278                         kread(X_INTRCNT, *intrcnts, intrcntlen);
1279                 else {
1280                         kread(X_INTRCNT, &kaddr, sizeof(kaddr));
1281                         kreadptr(kaddr, *intrcnts, intrcntlen);
1282                 }
1283         } else {
1284                 for (*intrcnts = NULL, intrcntlen = 1024; ; intrcntlen *= 2) {
1285                         *intrcnts = reallocf(*intrcnts, intrcntlen);
1286                         if (*intrcnts == NULL)
1287                                 err(1, "reallocf()");
1288                         if (mysysctl("hw.intrcnt", *intrcnts, &intrcntlen) == 0)
1289                                 break;
1290                 }
1291         }
1292
1293         return (intrcntlen / sizeof(unsigned long));
1294 }
1295
1296 static void
1297 print_intrcnts(unsigned long *intrcnts, unsigned long *old_intrcnts,
1298     char *intrnames, unsigned int nintr, size_t istrnamlen, long long period_ms)
1299 {
1300         unsigned long *intrcnt, *old_intrcnt;
1301         char *intrname;
1302         uint64_t inttotal, old_inttotal, total_count, total_rate;
1303         unsigned long count, rate;
1304         unsigned int i;
1305
1306         inttotal = 0;
1307         old_inttotal = 0;
1308         intrname = intrnames;
1309         xo_open_list("interrupt");
1310         for (i = 0, intrcnt=intrcnts, old_intrcnt=old_intrcnts; i < nintr; i++) {
1311                 if (intrname[0] != '\0' && (*intrcnt != 0 || aflag)) {
1312                         count = *intrcnt - *old_intrcnt;
1313                         rate = ((uint64_t)count * 1000 + period_ms / 2) / period_ms;
1314                         xo_open_instance("interrupt");
1315                         xo_emit("{d:name/%-*s}{ket:name/%s} "
1316                             "{:total/%20lu} {:rate/%10lu}\n",
1317                             (int)istrnamlen, intrname, intrname, count, rate);
1318                         xo_close_instance("interrupt");
1319                 }
1320                 intrname += strlen(intrname) + 1;
1321                 inttotal += *intrcnt++;
1322                 old_inttotal += *old_intrcnt++;
1323         }
1324         total_count = inttotal - old_inttotal;
1325         total_rate = (total_count * 1000 + period_ms / 2) / period_ms;
1326         xo_close_list("interrupt");
1327         xo_emit("{L:/%-*s} {:total-interrupts/%20ju} "
1328             "{:total-rate/%10ju}\n", (int)istrnamlen,
1329             "Total", (uintmax_t)total_count, (uintmax_t)total_rate);
1330 }
1331
1332 static void
1333 dointr(unsigned int interval, int reps)
1334 {
1335         unsigned long *intrcnts, *old_intrcnts;
1336         char *intrname, *intrnames;
1337         long long period_ms, old_uptime, uptime;
1338         size_t clen, inamlen, istrnamlen;
1339         uintptr_t kaddr;
1340         unsigned int nintr;
1341
1342         old_intrcnts = NULL;
1343         uptime = getuptime();
1344
1345         /* Get the names of each interrupt source */
1346         if (kd != NULL) {
1347                 kread(X_SINTRNAMES, &inamlen, sizeof(inamlen));
1348                 if ((intrnames = malloc(inamlen)) == NULL)
1349                         xo_err(1, "malloc()");
1350                 if (namelist[X_NINTRCNT].n_type == 0)
1351                         kread(X_INTRNAMES, intrnames, inamlen);
1352                 else {
1353                         kread(X_INTRNAMES, &kaddr, sizeof(kaddr));
1354                         kreadptr(kaddr, intrnames, inamlen);
1355                 }
1356         } else {
1357                 for (intrnames = NULL, inamlen = 1024; ; inamlen *= 2) {
1358                         if ((intrnames = reallocf(intrnames, inamlen)) == NULL)
1359                                 xo_err(1, "reallocf()");
1360                         if (mysysctl("hw.intrnames", intrnames, &inamlen) == 0)
1361                                 break;
1362                 }
1363         }
1364
1365         /* Determine the length of the longest interrupt name */
1366         intrname = intrnames;
1367         istrnamlen = strlen("interrupt");
1368         while(*intrname != '\0') {
1369                 clen = strlen(intrname);
1370                 if (clen > istrnamlen)
1371                         istrnamlen = clen;
1372                 intrname += strlen(intrname) + 1;
1373         }
1374         xo_emit("{T:/%-*s} {T:/%20s} {T:/%10s}\n",
1375             (int)istrnamlen, "interrupt", "total", "rate");
1376
1377         /*
1378          * Loop reps times printing differential interrupt counts.  If reps is
1379          * zero, then run just once, printing total counts
1380          */
1381         xo_open_container("interrupt-statistics");
1382
1383         period_ms = uptime / 1000000;
1384         while(1) {
1385                 nintr = read_intrcnts(&intrcnts);
1386                 /*
1387                  * Initialize old_intrcnts to 0 for the first pass, so
1388                  * print_intrcnts will print total interrupts since boot
1389                  */
1390                 if (old_intrcnts == NULL) {
1391                         old_intrcnts = calloc(nintr, sizeof(unsigned long));
1392                         if (old_intrcnts == NULL)
1393                                 xo_err(1, "calloc()");
1394                 }
1395
1396                 print_intrcnts(intrcnts, old_intrcnts, intrnames, nintr,
1397                     istrnamlen, period_ms);
1398                 xo_flush();
1399
1400                 free(old_intrcnts);
1401                 old_intrcnts = intrcnts;
1402                 if (reps >= 0 && --reps <= 0)
1403                         break;
1404                 usleep(interval * 1000);
1405                 old_uptime = uptime;
1406                 uptime = getuptime();
1407                 period_ms = (uptime - old_uptime) / 1000000;
1408         }
1409
1410         xo_close_container("interrupt-statistics");
1411 }
1412
1413 static void
1414 domemstat_malloc(void)
1415 {
1416         struct memory_type_list *mtlp;
1417         struct memory_type *mtp;
1418         int error, first, i;
1419
1420         mtlp = memstat_mtl_alloc();
1421         if (mtlp == NULL) {
1422                 xo_warn("memstat_mtl_alloc");
1423                 return;
1424         }
1425         if (kd == NULL) {
1426                 if (memstat_sysctl_malloc(mtlp, 0) < 0) {
1427                         xo_warnx("memstat_sysctl_malloc: %s",
1428                             memstat_strerror(memstat_mtl_geterror(mtlp)));
1429                         return;
1430                 }
1431         } else {
1432                 if (memstat_kvm_malloc(mtlp, kd) < 0) {
1433                         error = memstat_mtl_geterror(mtlp);
1434                         if (error == MEMSTAT_ERROR_KVM)
1435                                 xo_warnx("memstat_kvm_malloc: %s",
1436                                     kvm_geterr(kd));
1437                         else
1438                                 xo_warnx("memstat_kvm_malloc: %s",
1439                                     memstat_strerror(error));
1440                 }
1441         }
1442         xo_open_container("malloc-statistics");
1443         xo_emit("{T:/%13s} {T:/%5s} {T:/%6s} {T:/%7s} {T:/%8s}  {T:Size(s)}\n",
1444             "Type", "InUse", "MemUse", "HighUse", "Requests");
1445         xo_open_list("memory");
1446         for (mtp = memstat_mtl_first(mtlp); mtp != NULL;
1447             mtp = memstat_mtl_next(mtp)) {
1448                 if (memstat_get_numallocs(mtp) == 0 &&
1449                     memstat_get_count(mtp) == 0)
1450                         continue;
1451                 xo_open_instance("memory");
1452                 xo_emit("{k:type/%13s/%s} {:in-use/%5ju} "
1453                     "{:memory-use/%5ju}{U:K} {:high-use/%7s} "
1454                     "{:requests/%8ju}  ",
1455                     memstat_get_name(mtp), (uintmax_t)memstat_get_count(mtp),
1456                     ((uintmax_t)memstat_get_bytes(mtp) + 1023) / 1024, "-",
1457                     (uintmax_t)memstat_get_numallocs(mtp));
1458                 first = 1;
1459                 xo_open_list("size");
1460                 for (i = 0; i < 32; i++) {
1461                         if (memstat_get_sizemask(mtp) & (1 << i)) {
1462                                 if (!first)
1463                                         xo_emit(",");
1464                                 xo_emit("{l:size/%d}", 1 << (i + 4));
1465                                 first = 0;
1466                         }
1467                 }
1468                 xo_close_list("size");
1469                 xo_close_instance("memory");
1470                 xo_emit("\n");
1471         }
1472         xo_close_list("memory");
1473         xo_close_container("malloc-statistics");
1474         memstat_mtl_free(mtlp);
1475 }
1476
1477 static void
1478 domemstat_zone(void)
1479 {
1480         struct memory_type_list *mtlp;
1481         struct memory_type *mtp;
1482         int error;
1483         char name[MEMTYPE_MAXNAME + 1];
1484
1485         mtlp = memstat_mtl_alloc();
1486         if (mtlp == NULL) {
1487                 xo_warn("memstat_mtl_alloc");
1488                 return;
1489         }
1490         if (kd == NULL) {
1491                 if (memstat_sysctl_uma(mtlp, 0) < 0) {
1492                         xo_warnx("memstat_sysctl_uma: %s",
1493                             memstat_strerror(memstat_mtl_geterror(mtlp)));
1494                         return;
1495                 }
1496         } else {
1497                 if (memstat_kvm_uma(mtlp, kd) < 0) {
1498                         error = memstat_mtl_geterror(mtlp);
1499                         if (error == MEMSTAT_ERROR_KVM)
1500                                 xo_warnx("memstat_kvm_uma: %s",
1501                                     kvm_geterr(kd));
1502                         else
1503                                 xo_warnx("memstat_kvm_uma: %s",
1504                                     memstat_strerror(error));
1505                 }
1506         }
1507         xo_open_container("memory-zone-statistics");
1508         xo_emit("{T:/%-20s} {T:/%6s} {T:/%6s} {T:/%8s} {T:/%8s} {T:/%8s} {T:/%8s}"
1509             "{T:/%4s} {T:/%4s}\n\n", "ITEM", "SIZE",
1510             "LIMIT", "USED", "FREE", "REQ", "FAIL", "SLEEP", "XDOMAIN");
1511         xo_open_list("zone");
1512         for (mtp = memstat_mtl_first(mtlp); mtp != NULL;
1513             mtp = memstat_mtl_next(mtp)) {
1514                 strlcpy(name, memstat_get_name(mtp), MEMTYPE_MAXNAME);
1515                 strcat(name, ":");
1516                 xo_open_instance("zone");
1517                 xo_emit("{d:name/%-20s}{ke:name/%s} {:size/%6ju}, "
1518                     "{:limit/%6ju},{:used/%8ju},"
1519                     "{:free/%8ju},{:requests/%8ju},"
1520                     "{:fail/%4ju},{:sleep/%4ju},{:xdomain/%4ju}\n", name,
1521                     memstat_get_name(mtp),
1522                     (uintmax_t)memstat_get_size(mtp),
1523                     (uintmax_t)memstat_get_countlimit(mtp),
1524                     (uintmax_t)memstat_get_count(mtp),
1525                     (uintmax_t)memstat_get_free(mtp),
1526                     (uintmax_t)memstat_get_numallocs(mtp),
1527                     (uintmax_t)memstat_get_failures(mtp),
1528                     (uintmax_t)memstat_get_sleeps(mtp),
1529                     (uintmax_t)memstat_get_xdomain(mtp));
1530                 xo_close_instance("zone");
1531         }
1532         memstat_mtl_free(mtlp);
1533         xo_close_list("zone");
1534         xo_close_container("memory-zone-statistics");
1535         xo_emit("\n");
1536 }
1537
1538 static void
1539 display_object(struct kinfo_vmobject *kvo)
1540 {
1541         const char *str;
1542
1543         xo_open_instance("object");
1544         xo_emit("{:resident/%5ju} ", (uintmax_t)kvo->kvo_resident);
1545         xo_emit("{:active/%5ju} ", (uintmax_t)kvo->kvo_active);
1546         xo_emit("{:inactive/%5ju} ", (uintmax_t)kvo->kvo_inactive);
1547         xo_emit("{:refcount/%3d} ", kvo->kvo_ref_count);
1548         xo_emit("{:shadowcount/%3d} ", kvo->kvo_shadow_count);
1549         switch (kvo->kvo_memattr) {
1550 #ifdef VM_MEMATTR_UNCACHEABLE
1551         case VM_MEMATTR_UNCACHEABLE:
1552                 str = "UC";
1553                 break;
1554 #endif
1555 #ifdef VM_MEMATTR_WRITE_COMBINING
1556         case VM_MEMATTR_WRITE_COMBINING:
1557                 str = "WC";
1558                 break;
1559 #endif
1560 #ifdef VM_MEMATTR_WRITE_THROUGH
1561         case VM_MEMATTR_WRITE_THROUGH:
1562                 str = "WT";
1563                 break;
1564 #endif
1565 #ifdef VM_MEMATTR_WRITE_PROTECTED
1566         case VM_MEMATTR_WRITE_PROTECTED:
1567                 str = "WP";
1568                 break;
1569 #endif
1570 #ifdef VM_MEMATTR_WRITE_BACK
1571         case VM_MEMATTR_WRITE_BACK:
1572                 str = "WB";
1573                 break;
1574 #endif
1575 #ifdef VM_MEMATTR_WEAK_UNCACHEABLE
1576         case VM_MEMATTR_WEAK_UNCACHEABLE:
1577                 str = "UC-";
1578                 break;
1579 #endif
1580 #ifdef VM_MEMATTR_WB_WA
1581         case VM_MEMATTR_WB_WA:
1582                 str = "WB";
1583                 break;
1584 #endif
1585 #ifdef VM_MEMATTR_NOCACHE
1586         case VM_MEMATTR_NOCACHE:
1587                 str = "NC";
1588                 break;
1589 #endif
1590 #ifdef VM_MEMATTR_DEVICE
1591         case VM_MEMATTR_DEVICE:
1592                 str = "DEV";
1593                 break;
1594 #endif
1595 #ifdef VM_MEMATTR_CACHEABLE
1596         case VM_MEMATTR_CACHEABLE:
1597                 str = "C";
1598                 break;
1599 #endif
1600 #ifdef VM_MEMATTR_PREFETCHABLE
1601         case VM_MEMATTR_PREFETCHABLE:
1602                 str = "PRE";
1603                 break;
1604 #endif
1605         default:
1606                 str = "??";
1607                 break;
1608         }
1609         xo_emit("{:attribute/%-3s} ", str);
1610         switch (kvo->kvo_type) {
1611         case KVME_TYPE_NONE:
1612                 str = "--";
1613                 break;
1614         case KVME_TYPE_DEFAULT:
1615                 str = "df";
1616                 break;
1617         case KVME_TYPE_VNODE:
1618                 str = "vn";
1619                 break;
1620         case KVME_TYPE_SWAP:
1621                 str = "sw";
1622                 break;
1623         case KVME_TYPE_DEVICE:
1624                 str = "dv";
1625                 break;
1626         case KVME_TYPE_PHYS:
1627                 str = "ph";
1628                 break;
1629         case KVME_TYPE_DEAD:
1630                 str = "dd";
1631                 break;
1632         case KVME_TYPE_SG:
1633                 str = "sg";
1634                 break;
1635         case KVME_TYPE_MGTDEVICE:
1636                 str = "md";
1637                 break;
1638         case KVME_TYPE_UNKNOWN:
1639         default:
1640                 str = "??";
1641                 break;
1642         }
1643         xo_emit("{:type/%-2s} ", str);
1644         xo_emit("{:path/%-s}\n", kvo->kvo_path);
1645         xo_close_instance("object");
1646 }
1647
1648 static void
1649 doobjstat(void)
1650 {
1651         struct kinfo_vmobject *kvo;
1652         int cnt, i;
1653
1654         kvo = kinfo_getvmobject(&cnt);
1655         if (kvo == NULL) {
1656                 xo_warn("Failed to fetch VM object list");
1657                 return;
1658         }
1659         xo_emit("{T:RES/%5s} {T:ACT/%5s} {T:INACT/%5s} {T:REF/%3s} {T:SHD/%3s} "
1660             "{T:CM/%3s} {T:TP/%2s} {T:PATH/%s}\n");
1661         xo_open_list("object");
1662         for (i = 0; i < cnt; i++)
1663                 display_object(&kvo[i]);
1664         free(kvo);
1665         xo_close_list("object");
1666 }
1667
1668 /*
1669  * kread reads something from the kernel, given its nlist index.
1670  */
1671 static void
1672 kreado(int nlx, void *addr, size_t size, size_t offset)
1673 {
1674         const char *sym;
1675
1676         if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) {
1677                 sym = namelist[nlx].n_name;
1678                 if (*sym == '_')
1679                         ++sym;
1680                 xo_errx(1, "symbol %s not defined", sym);
1681         }
1682         if ((size_t)kvm_read(kd, namelist[nlx].n_value + offset, addr,
1683             size) != size) {
1684                 sym = namelist[nlx].n_name;
1685                 if (*sym == '_')
1686                         ++sym;
1687                 xo_errx(1, "%s: %s", sym, kvm_geterr(kd));
1688         }
1689 }
1690
1691 static void
1692 kread(int nlx, void *addr, size_t size)
1693 {
1694
1695         kreado(nlx, addr, size, 0);
1696 }
1697
1698 static void
1699 kreadptr(uintptr_t addr, void *buf, size_t size)
1700 {
1701
1702         if ((size_t)kvm_read(kd, addr, buf, size) != size)
1703                 xo_errx(1, "%s", kvm_geterr(kd));
1704 }
1705
1706 static void __dead2
1707 usage(void)
1708 {
1709         xo_error("%s%s",
1710             "usage: vmstat [-afHhimoPsz] [-M core [-N system]] [-c count] [-n devs]\n",
1711             "              [-p type,if,pass] [-w wait] [disks] [wait [count]]\n");
1712         xo_finish();
1713         exit(1);
1714 }