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) (unsigned long)(((x) * rate_adj + halfuptime) / uptime)
 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                             rate(sum.v_vm_faults - osum.v_vm_faults), 5, 0);
 800                         xo_emit(" ");
 801                 } else {
 802                         xo_emit(" ");
 803                         xo_emit("{:available-memory/%7ju}",
 804                             vmstat_pgtok(total.t_avm));
 805                         xo_emit(" ");
 806                         xo_emit("{:free-memory/%7ju}",
 807                             vmstat_pgtok(total.t_free));
 808                         xo_emit(" ");
 809                         xo_emit("{:total-page-faults/%5lu} ",
 810                             rate(sum.v_vm_faults - osum.v_vm_faults));
 811                 }
 812                 xo_close_container("memory");
 813
 814                 xo_open_container("paging-rates");
 815                 xo_emit("{:page-reactivated/%3lu} ",
 816                     rate(sum.v_reactivated - osum.v_reactivated));
 817                 xo_emit("{:paged-in/%3lu} ",
 818                     rate(sum.v_swapin + sum.v_vnodein -
 819                     (osum.v_swapin + osum.v_vnodein)));
 820                 xo_emit("{:paged-out/%3lu}",
 821                     rate(sum.v_swapout + sum.v_vnodeout -
 822                     (osum.v_swapout + osum.v_vnodeout)));
 823                 if (hflag) {
 824                         prthuman("freed",
 825                             rate(sum.v_tfree - osum.v_tfree), 5, 0);
 826                         prthuman("scanned",
 827                             rate(sum.v_pdpages - osum.v_pdpages), 5, 0);
 828                         xo_emit(" ");
 829                 } else {
 830                         xo_emit(" ");
 831                         xo_emit("{:freed/%5lu} ",
 832                             rate(sum.v_tfree - osum.v_tfree));
 833                         xo_emit("{:scanned/%4lu} ",
 834                             rate(sum.v_pdpages - osum.v_pdpages));
 835                 }
 836                 xo_close_container("paging-rates");
 837
 838                 devstats();
 839                 xo_open_container("fault-rates");
 840                 xo_emit("{:interrupts/%4lu}", rate(sum.v_intr - osum.v_intr));
 841                 if (hflag) {
 842                         prthuman("system-calls",
 843                             rate(sum.v_syscall - osum.v_syscall), 5, 0);
 844                         prthuman("context-switches",
 845                             rate(sum.v_swtch - osum.v_swtch), 5, 0);
 846                 } else {
 847                         xo_emit(" ");
 848                         xo_emit("{:system-calls/%5lu} "
 849                             "{:context-switches/%5lu}",
 850                             rate(sum.v_syscall - osum.v_syscall),
 851                             rate(sum.v_swtch - osum.v_swtch));
 852                 }
 853                 xo_close_container("fault-rates");
 854                 if (Pflag)
 855                         pcpustats(cpumask, maxid);
 856                 else
 857                         cpustats();
 858                 xo_emit("\n");
 859                 xo_flush();
 860                 if (reps >= 0 && --reps <= 0)
 861                         break;
 862                 osum = sum;
 863                 uptime = interval;
 864                 rate_adj = 1000;
 865                 /*
 866                  * We round upward to avoid losing low-frequency events
 867                  * (i.e., >= 1 per interval but < 1 per millisecond).
 868                  */
 869                 if (interval != 1)
 870                         halfuptime = (uptime + 1) / 2;
 871                 else
 872                         halfuptime = 0;
 873                 (void)usleep(interval * 1000);
 874         }
 875 }
 876
 877 static void
 878 printhdr(int maxid, u_long cpumask)
 879 {
 880         int i, num_shown;
 881
 882         num_shown = MIN(num_selected, maxshowdevs);
 883         if (hflag)
 884                 xo_emit(" {T:procs}    {T:memory}    {T:/page%*s}", 19, "");
 885         else
 886                 xo_emit("{T:procs}     {T:memory}       {T:/page%*s}", 19, "");
 887         if (num_shown > 1)
 888                 xo_emit("   {T:/disks %*s}  ", num_shown * 4 - 7, "");
 889         else if (num_shown == 1)
 890                 xo_emit("   {T:disks}");
 891         xo_emit(" {T:faults}      ");
 892         if (Pflag) {
 893                 for (i = 0; i <= maxid; i++) {
 894                         if (cpumask & (1ul << i))
 895                                 xo_emit("  {T:/cpu%d}   ", i);
 896                 }
 897                 xo_emit("\n");
 898         } else
 899                 xo_emit(" {T:cpu}\n");
 900         if (hflag) {
 901                 xo_emit(" {T:r}  {T:b}  {T:w}  {T:avm}  {T:fre}  {T:flt}  {T:re}"
 902                     "  {T:pi}  {T:po}   {T:fr}   {T:sr} ");
 903         } else {
 904                 xo_emit("{T:r} {T:b} {T:w}     {T:avm}     {T:fre}  {T:flt}  "
 905                     "{T:re}  {T:pi}  {T:po}    {T:fr}   {T:sr} ");
 906         }
 907         for (i = 0; i < num_devices; i++)
 908                 if ((dev_select[i].selected) &&
 909                     (dev_select[i].selected <= maxshowdevs))
 910                         xo_emit("{T:/%c%c%d} ", dev_select[i].device_name[0],
 911                             dev_select[i].device_name[1],
 912                             dev_select[i].unit_number);
 913         xo_emit("  {T:in}   {T:sy}   {T:cs}");
 914         if (Pflag) {
 915                 for (i = 0; i <= maxid; i++) {
 916                         if (cpumask & (1ul << i))
 917                                 xo_emit(" {T:us} {T:sy} {T:id}");
 918                 }
 919                 xo_emit("\n");
 920         } else
 921                 xo_emit(" {T:us} {T:sy} {T:id}\n");
 922         if (wresized != 0)
 923                 doresize();
 924         hdrcnt = winlines;
 925 }
 926
 927 /*
 928  * Force a header to be prepended to the next output.
 929  */
 930 static void
 931 needhdr(int dummy __unused)
 932 {
 933
 934         hdrcnt = 1;
 935 }
 936
 937 /*
 938  * When the terminal is resized, force an update of the maximum number of rows
 939  * printed between each header repetition.  Then force a new header to be
 940  * prepended to the next output.
 941  */
 942 void
 943 needresize(int signo __unused)
 944 {
 945
 946         wresized = 1;
 947         hdrcnt = 1;
 948 }
 949
 950 /*
 951  * Update the global `winlines' count of terminal rows.
 952  */
 953 void
 954 doresize(void)
 955 {
 956         struct winsize w;
 957         int status;
 958
 959         for (;;) {
 960                 status = ioctl(fileno(stdout), TIOCGWINSZ, &w);
 961                 if (status == -1 && errno == EINTR)
 962                         continue;
 963                 else if (status == -1)
 964                         xo_err(1, "ioctl");
 965                 if (w.ws_row > 3)
 966                         winlines = w.ws_row - 3;
 967                 else
 968                         winlines = VMSTAT_DEFAULT_LINES;
 969                 break;
 970         }
 971
 972         /*
 973          * Inhibit doresize() calls until we are rescheduled by SIGWINCH.
 974          */
 975         wresized = 0;
 976 }
 977
 978 static long
 979 pct(long top, long bot)
 980 {
 981         long ans;
 982
 983         if (bot == 0)
 984                 return(0);
 985         ans = (quad_t)top * 100 / bot;
 986         return (ans);
 987 }
 988
 989 #define PCT(top, bot) pct((long)(top), (long)(bot))
 990
 991 static void
 992 dosum(void)
 993 {
 994         struct nchstats lnchstats;
 995         size_t size;
 996         long nchtotal;
 997
 998         fill_vmmeter(&sum);
 999         xo_open_container("summary-statistics");
1000         xo_emit("{:context-switches/%9u} {N:cpu context switches}\n",
1001             sum.v_swtch);
1002         xo_emit("{:interrupts/%9u} {N:device interrupts}\n",
1003             sum.v_intr);
1004         xo_emit("{:software-interrupts/%9u} {N:software interrupts}\n",
1005             sum.v_soft);
1006         xo_emit("{:traps/%9u} {N:traps}\n", sum.v_trap);
1007         xo_emit("{:system-calls/%9u} {N:system calls}\n",
1008             sum.v_syscall);
1009         xo_emit("{:kernel-threads/%9u} {N:kernel threads created}\n",
1010             sum.v_kthreads);
1011         xo_emit("{:forks/%9u} {N: fork() calls}\n", sum.v_forks);
1012         xo_emit("{:vforks/%9u} {N:vfork() calls}\n",
1013             sum.v_vforks);
1014         xo_emit("{:rforks/%9u} {N:rfork() calls}\n",
1015             sum.v_rforks);
1016         xo_emit("{:swap-ins/%9u} {N:swap pager pageins}\n",
1017             sum.v_swapin);
1018         xo_emit("{:swap-in-pages/%9u} {N:swap pager pages paged in}\n",
1019             sum.v_swappgsin);
1020         xo_emit("{:swap-outs/%9u} {N:swap pager pageouts}\n",
1021             sum.v_swapout);
1022         xo_emit("{:swap-out-pages/%9u} {N:swap pager pages paged out}\n",
1023             sum.v_swappgsout);
1024         xo_emit("{:vnode-page-ins/%9u} {N:vnode pager pageins}\n",
1025             sum.v_vnodein);
1026         xo_emit("{:vnode-page-in-pages/%9u} {N:vnode pager pages paged in}\n",
1027             sum.v_vnodepgsin);
1028         xo_emit("{:vnode-page-outs/%9u} {N:vnode pager pageouts}\n",
1029             sum.v_vnodeout);
1030         xo_emit("{:vnode-page-out-pages/%9u} {N:vnode pager pages paged out}\n",
1031             sum.v_vnodepgsout);
1032         xo_emit("{:page-daemon-wakeups/%9u} {N:page daemon wakeups}\n",
1033             sum.v_pdwakeups);
1034         xo_emit("{:page-daemon-pages/%9u} {N:pages examined by the page "
1035             "daemon}\n", sum.v_pdpages);
1036         xo_emit("{:page-reclamation-shortfalls/%9u} {N:clean page reclamation "
1037             "shortfalls}\n", sum.v_pdshortfalls);
1038         xo_emit("{:reactivated/%9u} {N:pages reactivated by the page daemon}\n",
1039             sum.v_reactivated);
1040         xo_emit("{:copy-on-write-faults/%9u} {N:copy-on-write faults}\n",
1041             sum.v_cow_faults);
1042         xo_emit("{:copy-on-write-optimized-faults/%9u} {N:copy-on-write "
1043             "optimized faults}\n", sum.v_cow_optim);
1044         xo_emit("{:zero-fill-pages/%9u} {N:zero fill pages zeroed}\n",
1045             sum.v_zfod);
1046         xo_emit("{:zero-fill-prezeroed/%9u} {N:zero fill pages prezeroed}\n",
1047             sum.v_ozfod);
1048         xo_emit("{:intransit-blocking/%9u} {N:intransit blocking page faults}\n",
1049             sum.v_intrans);
1050         xo_emit("{:total-faults/%9u} {N:total VM faults taken}\n",
1051             sum.v_vm_faults);
1052         xo_emit("{:faults-requiring-io/%9u} {N:page faults requiring I\\/O}\n",
1053             sum.v_io_faults);
1054         xo_emit("{:faults-from-thread-creation/%9u} {N:pages affected by "
1055             "kernel thread creation}\n", sum.v_kthreadpages);
1056         xo_emit("{:faults-from-fork/%9u} {N:pages affected by  fork}()\n",
1057             sum.v_forkpages);
1058         xo_emit("{:faults-from-vfork/%9u} {N:pages affected by vfork}()\n",
1059             sum.v_vforkpages);
1060         xo_emit("{:pages-rfork/%9u} {N:pages affected by rfork}()\n",
1061             sum.v_rforkpages);
1062         xo_emit("{:pages-freed/%9u} {N:pages freed}\n",
1063             sum.v_tfree);
1064         xo_emit("{:pages-freed-by-daemon/%9u} {N:pages freed by daemon}\n",
1065             sum.v_dfree);
1066         xo_emit("{:pages-freed-on-exit/%9u} {N:pages freed by exiting processes}\n",
1067             sum.v_pfree);
1068         xo_emit("{:active-pages/%9u} {N:pages active}\n",
1069             sum.v_active_count);
1070         xo_emit("{:inactive-pages/%9u} {N:pages inactive}\n",
1071             sum.v_inactive_count);
1072         xo_emit("{:laundry-pages/%9u} {N:pages in the laundry queue}\n",
1073             sum.v_laundry_count);
1074         xo_emit("{:wired-pages/%9u} {N:pages wired down}\n",
1075             sum.v_wire_count);
1076         xo_emit("{:virtual-user-wired-pages/%9lu} {N:virtual user pages wired "
1077             "down}\n", sum.v_user_wire_count);
1078         xo_emit("{:free-pages/%9u} {N:pages free}\n",
1079             sum.v_free_count);
1080         xo_emit("{:bytes-per-page/%9u} {N:bytes per page}\n", sum.v_page_size);
1081         if (kd != NULL) {
1082                 kread(X_NCHSTATS, &lnchstats, sizeof(lnchstats));
1083         } else {
1084                 size = sizeof(lnchstats);
1085                 mysysctl("vfs.cache.nchstats", &lnchstats, &size);
1086                 if (size != sizeof(lnchstats))
1087                         xo_errx(1, "vfs.cache.nchstats size mismatch");
1088         }
1089         nchtotal = lnchstats.ncs_goodhits + lnchstats.ncs_neghits +
1090             lnchstats.ncs_badhits + lnchstats.ncs_falsehits +
1091             lnchstats.ncs_miss + lnchstats.ncs_long;
1092         xo_emit("{:total-name-lookups/%9ld} {N:total name lookups}\n",
1093             nchtotal);
1094         xo_emit("{P:/%9s} {N:cache hits} "
1095             "({:positive-cache-hits/%ld}% pos + "
1096             "{:negative-cache-hits/%ld}% {N:neg}) "
1097             "system {:cache-hit-percent/%ld}% per-directory\n",
1098             "", PCT(lnchstats.ncs_goodhits, nchtotal),
1099             PCT(lnchstats.ncs_neghits, nchtotal),
1100             PCT(lnchstats.ncs_pass2, nchtotal));
1101         xo_emit("{P:/%9s} {L:deletions} {:deletions/%ld}%, "
1102             "{L:falsehits} {:false-hits/%ld}%, "
1103             "{L:toolong} {:too-long/%ld}%\n", "",
1104             PCT(lnchstats.ncs_badhits, nchtotal),
1105             PCT(lnchstats.ncs_falsehits, nchtotal),
1106             PCT(lnchstats.ncs_long, nchtotal));
1107         xo_close_container("summary-statistics");
1108 }
1109
1110 static void
1111 doforkst(void)
1112 {
1113
1114         fill_vmmeter(&sum);
1115         xo_open_container("fork-statistics");
1116         xo_emit("{:fork/%u} {N:forks}, {:fork-pages/%u} {N:pages}, "
1117             "{L:average} {:fork-average/%.2f}\n",
1118             sum.v_forks, sum.v_forkpages,
1119             sum.v_forks == 0 ? 0.0 :
1120             (double)sum.v_forkpages / sum.v_forks);
1121         xo_emit("{:vfork/%u} {N:vforks}, {:vfork-pages/%u} {N:pages}, "
1122             "{L:average} {:vfork-average/%.2f}\n",
1123             sum.v_vforks, sum.v_vforkpages,
1124             sum.v_vforks == 0 ? 0.0 :
1125             (double)sum.v_vforkpages / sum.v_vforks);
1126         xo_emit("{:rfork/%u} {N:rforks}, {:rfork-pages/%u} {N:pages}, "
1127             "{L:average} {:rfork-average/%.2f}\n",
1128             sum.v_rforks, sum.v_rforkpages,
1129             sum.v_rforks == 0 ? 0.0 :
1130             (double)sum.v_rforkpages / sum.v_rforks);
1131         xo_close_container("fork-statistics");
1132 }
1133
1134 static void
1135 devstats(void)
1136 {
1137         long double busy_seconds, transfers_per_second;
1138         long tmp;
1139         int di, dn, state;
1140
1141         for (state = 0; state < CPUSTATES; ++state) {
1142                 tmp = cur.cp_time[state];
1143                 cur.cp_time[state] -= last.cp_time[state];
1144                 last.cp_time[state] = tmp;
1145         }
1146
1147         busy_seconds = cur.snap_time - last.snap_time;
1148
1149         xo_open_list("device");
1150         for (dn = 0; dn < num_devices; dn++) {
1151                 if (dev_select[dn].selected == 0 ||
1152                     dev_select[dn].selected > maxshowdevs)
1153                         continue;
1154
1155                 di = dev_select[dn].position;
1156
1157                 if (devstat_compute_statistics(&cur.dinfo->devices[di],
1158                     &last.dinfo->devices[di], busy_seconds,
1159                     DSM_TRANSFERS_PER_SECOND, &transfers_per_second,
1160                     DSM_NONE) != 0)
1161                         xo_errx(1, "%s", devstat_errbuf);
1162
1163                 xo_open_instance("device");
1164                 xo_emit("{ekq:name/%c%c%d}{:transfers/%3.0Lf} ",
1165                     dev_select[dn].device_name[0],
1166                     dev_select[dn].device_name[1],
1167                     dev_select[dn].unit_number,
1168                     transfers_per_second);
1169                 xo_close_instance("device");
1170         }
1171         xo_close_list("device");
1172 }
1173
1174 static void
1175 percent(const char *name, double pctv, int *over)
1176 {
1177         int l;
1178         char buf[10];
1179         char fmt[128];
1180
1181         snprintf(fmt, sizeof(fmt), " {:%s/%%*s}", name);
1182         l = snprintf(buf, sizeof(buf), "%.0f", pctv);
1183         if (l == 1 && *over) {
1184                 xo_emit(fmt, 1, buf);
1185                 (*over)--;
1186         } else
1187                 xo_emit(fmt, 2, buf);
1188         if (l > 2)
1189                 (*over)++;
1190 }
1191
1192 static void
1193 cpustats(void)
1194 {
1195         double lpct, total;
1196         int state, over;
1197
1198         total = 0;
1199         for (state = 0; state < CPUSTATES; ++state)
1200                 total += cur.cp_time[state];
1201         if (total > 0)
1202                 lpct = 100.0 / total;
1203         else
1204                 lpct = 0.0;
1205         over = 0;
1206         xo_open_container("cpu-statistics");
1207         percent("user", (cur.cp_time[CP_USER] + cur.cp_time[CP_NICE]) * lpct,
1208             &over);
1209         percent("system", (cur.cp_time[CP_SYS] + cur.cp_time[CP_INTR]) * lpct,
1210             &over);
1211         percent("idle", cur.cp_time[CP_IDLE] * lpct, &over);
1212         xo_close_container("cpu-statistics");
1213 }
1214
1215 static void
1216 pcpustats(u_long cpumask, int maxid)
1217 {
1218         double lpct, total;
1219         long tmp;
1220         int i, over, state;
1221
1222         /* devstats does this for cp_time */
1223         for (i = 0; i <= maxid; i++) {
1224                 if ((cpumask & (1ul << i)) == 0)
1225                         continue;
1226                 for (state = 0; state < CPUSTATES; ++state) {
1227                         tmp = cur_cp_times[i * CPUSTATES + state];
1228                         cur_cp_times[i * CPUSTATES + state] -= last_cp_times[i *
1229                             CPUSTATES + state];
1230                         last_cp_times[i * CPUSTATES + state] = tmp;
1231                 }
1232         }
1233
1234         over = 0;
1235         xo_open_list("cpu");
1236         for (i = 0; i <= maxid; i++) {
1237                 if ((cpumask & (1ul << i)) == 0)
1238                         continue;
1239                 xo_open_instance("cpu");
1240                 xo_emit("{ke:name/%d}", i);
1241                 total = 0;
1242                 for (state = 0; state < CPUSTATES; ++state)
1243                         total += cur_cp_times[i * CPUSTATES + state];
1244                 if (total)
1245                         lpct = 100.0 / total;
1246                 else
1247                         lpct = 0.0;
1248                 percent("user", (cur_cp_times[i * CPUSTATES + CP_USER] +
1249                     cur_cp_times[i * CPUSTATES + CP_NICE]) * lpct, &over);
1250                 percent("system", (cur_cp_times[i * CPUSTATES + CP_SYS] +
1251                     cur_cp_times[i * CPUSTATES + CP_INTR]) * lpct, &over);
1252                 percent("idle", cur_cp_times[i * CPUSTATES + CP_IDLE] * lpct,
1253                     &over);
1254                 xo_close_instance("cpu");
1255         }
1256         xo_close_list("cpu");
1257 }
1258
1259 static unsigned int
1260 read_intrcnts(unsigned long **intrcnts)
1261 {
1262         size_t intrcntlen;
1263         uintptr_t kaddr;
1264
1265         if (kd != NULL) {
1266                 kread(X_SINTRCNT, &intrcntlen, sizeof(intrcntlen));
1267                 if ((*intrcnts = malloc(intrcntlen)) == NULL)
1268                         err(1, "malloc()");
1269                 if (namelist[X_NINTRCNT].n_type == 0)
1270                         kread(X_INTRCNT, *intrcnts, intrcntlen);
1271                 else {
1272                         kread(X_INTRCNT, &kaddr, sizeof(kaddr));
1273                         kreadptr(kaddr, *intrcnts, intrcntlen);
1274                 }
1275         } else {
1276                 for (*intrcnts = NULL, intrcntlen = 1024; ; intrcntlen *= 2) {
1277                         *intrcnts = reallocf(*intrcnts, intrcntlen);
1278                         if (*intrcnts == NULL)
1279                                 err(1, "reallocf()");
1280                         if (mysysctl("hw.intrcnt", *intrcnts, &intrcntlen) == 0)
1281                                 break;
1282                 }
1283         }
1284
1285         return (intrcntlen / sizeof(unsigned long));
1286 }
1287
1288 static void
1289 print_intrcnts(unsigned long *intrcnts, unsigned long *old_intrcnts,
1290     char *intrnames, unsigned int nintr, size_t istrnamlen, long long period_ms)
1291 {
1292         unsigned long *intrcnt, *old_intrcnt;
1293         char *intrname;
1294         uint64_t inttotal, old_inttotal, total_count, total_rate;
1295         unsigned long count, rate;
1296         unsigned int i;
1297
1298         inttotal = 0;
1299         old_inttotal = 0;
1300         intrname = intrnames;
1301         xo_open_list("interrupt");
1302         for (i = 0, intrcnt=intrcnts, old_intrcnt=old_intrcnts; i < nintr; i++) {
1303                 if (intrname[0] != '\0' && (*intrcnt != 0 || aflag)) {
1304                         count = *intrcnt - *old_intrcnt;
1305                         rate = ((uint64_t)count * 1000 + period_ms / 2) / period_ms;
1306                         xo_open_instance("interrupt");
1307                         xo_emit("{d:name/%-*s}{ket:name/%s} "
1308                             "{:total/%20lu} {:rate/%10lu}\n",
1309                             (int)istrnamlen, intrname, intrname, count, rate);
1310                         xo_close_instance("interrupt");
1311                 }
1312                 intrname += strlen(intrname) + 1;
1313                 inttotal += *intrcnt++;
1314                 old_inttotal += *old_intrcnt++;
1315         }
1316         total_count = inttotal - old_inttotal;
1317         total_rate = (total_count * 1000 + period_ms / 2) / period_ms;
1318         xo_close_list("interrupt");
1319         xo_emit("{L:/%-*s} {:total-interrupts/%20ju} "
1320             "{:total-rate/%10ju}\n", (int)istrnamlen,
1321             "Total", (uintmax_t)total_count, (uintmax_t)total_rate);
1322 }
1323
1324 static void
1325 dointr(unsigned int interval, int reps)
1326 {
1327         unsigned long *intrcnts, *old_intrcnts;
1328         char *intrname, *intrnames;
1329         long long period_ms, old_uptime, uptime;
1330         size_t clen, inamlen, istrnamlen;
1331         uintptr_t kaddr;
1332         unsigned int nintr;
1333
1334         old_intrcnts = NULL;
1335         uptime = getuptime();
1336
1337         /* Get the names of each interrupt source */
1338         if (kd != NULL) {
1339                 kread(X_SINTRNAMES, &inamlen, sizeof(inamlen));
1340                 if ((intrnames = malloc(inamlen)) == NULL)
1341                         xo_err(1, "malloc()");
1342                 if (namelist[X_NINTRCNT].n_type == 0)
1343                         kread(X_INTRNAMES, intrnames, inamlen);
1344                 else {
1345                         kread(X_INTRNAMES, &kaddr, sizeof(kaddr));
1346                         kreadptr(kaddr, intrnames, inamlen);
1347                 }
1348         } else {
1349                 for (intrnames = NULL, inamlen = 1024; ; inamlen *= 2) {
1350                         if ((intrnames = reallocf(intrnames, inamlen)) == NULL)
1351                                 xo_err(1, "reallocf()");
1352                         if (mysysctl("hw.intrnames", intrnames, &inamlen) == 0)
1353                                 break;
1354                 }
1355         }
1356
1357         /* Determine the length of the longest interrupt name */
1358         intrname = intrnames;
1359         istrnamlen = strlen("interrupt");
1360         while(*intrname != '\0') {
1361                 clen = strlen(intrname);
1362                 if (clen > istrnamlen)
1363                         istrnamlen = clen;
1364                 intrname += strlen(intrname) + 1;
1365         }
1366         xo_emit("{T:/%-*s} {T:/%20s} {T:/%10s}\n",
1367             (int)istrnamlen, "interrupt", "total", "rate");
1368
1369         /*
1370          * Loop reps times printing differential interrupt counts.  If reps is
1371          * zero, then run just once, printing total counts
1372          */
1373         xo_open_container("interrupt-statistics");
1374
1375         period_ms = uptime / 1000000;
1376         while(1) {
1377                 nintr = read_intrcnts(&intrcnts);
1378                 /*
1379                  * Initialize old_intrcnts to 0 for the first pass, so
1380                  * print_intrcnts will print total interrupts since boot
1381                  */
1382                 if (old_intrcnts == NULL) {
1383                         old_intrcnts = calloc(nintr, sizeof(unsigned long));
1384                         if (old_intrcnts == NULL)
1385                                 xo_err(1, "calloc()");
1386                 }
1387
1388                 print_intrcnts(intrcnts, old_intrcnts, intrnames, nintr,
1389                     istrnamlen, period_ms);
1390                 xo_flush();
1391
1392                 free(old_intrcnts);
1393                 old_intrcnts = intrcnts;
1394                 if (reps >= 0 && --reps <= 0)
1395                         break;
1396                 usleep(interval * 1000);
1397                 old_uptime = uptime;
1398                 uptime = getuptime();
1399                 period_ms = (uptime - old_uptime) / 1000000;
1400         }
1401
1402         xo_close_container("interrupt-statistics");
1403 }
1404
1405 static void
1406 domemstat_malloc(void)
1407 {
1408         struct memory_type_list *mtlp;
1409         struct memory_type *mtp;
1410         size_t i, zones;
1411         int error, first;
1412
1413         mtlp = memstat_mtl_alloc();
1414         if (mtlp == NULL) {
1415                 xo_warn("memstat_mtl_alloc");
1416                 return;
1417         }
1418         if (kd == NULL) {
1419                 if (memstat_sysctl_malloc(mtlp, 0) < 0) {
1420                         xo_warnx("memstat_sysctl_malloc: %s",
1421                             memstat_strerror(memstat_mtl_geterror(mtlp)));
1422                         return;
1423                 }
1424         } else {
1425                 if (memstat_kvm_malloc(mtlp, kd) < 0) {
1426                         error = memstat_mtl_geterror(mtlp);
1427                         if (error == MEMSTAT_ERROR_KVM)
1428                                 xo_warnx("memstat_kvm_malloc: %s",
1429                                     kvm_geterr(kd));
1430                         else
1431                                 xo_warnx("memstat_kvm_malloc: %s",
1432                                     memstat_strerror(error));
1433                 }
1434         }
1435         xo_open_container("malloc-statistics");
1436         xo_emit("{T:/%13s} {T:/%5s} {T:/%6s} {T:/%8s}  {T:Size(s)}\n",
1437             "Type", "InUse", "MemUse", "Requests");
1438         xo_open_list("memory");
1439         zones = memstat_malloc_zone_get_count();
1440         for (mtp = memstat_mtl_first(mtlp); mtp != NULL;
1441             mtp = memstat_mtl_next(mtp)) {
1442                 if (memstat_get_numallocs(mtp) == 0 &&
1443                     memstat_get_count(mtp) == 0)
1444                         continue;
1445                 xo_open_instance("memory");
1446                 xo_emit("{k:type/%13s/%s} {:in-use/%5ju} "
1447                     "{:memory-use/%5ju}{U:K} {:requests/%8ju}  ",
1448                     memstat_get_name(mtp), (uintmax_t)memstat_get_count(mtp),
1449                     ((uintmax_t)memstat_get_bytes(mtp) + 1023) / 1024,
1450                     (uintmax_t)memstat_get_numallocs(mtp));
1451                 first = 1;
1452                 xo_open_list("size");
1453                 for (i = 0; i < zones; i++) {
1454                         if (memstat_malloc_zone_used(mtp, i)) {
1455                                 if (!first)
1456                                         xo_emit(",");
1457                                 xo_emit("{l:size/%d}", memstat_malloc_zone_get_size(i));
1458                                 first = 0;
1459                         }
1460                 }
1461                 xo_close_list("size");
1462                 xo_close_instance("memory");
1463                 xo_emit("\n");
1464         }
1465         xo_close_list("memory");
1466         xo_close_container("malloc-statistics");
1467         memstat_mtl_free(mtlp);
1468 }
1469
1470 static void
1471 domemstat_zone(void)
1472 {
1473         struct memory_type_list *mtlp;
1474         struct memory_type *mtp;
1475         int error;
1476         char name[MEMTYPE_MAXNAME + 1];
1477
1478         mtlp = memstat_mtl_alloc();
1479         if (mtlp == NULL) {
1480                 xo_warn("memstat_mtl_alloc");
1481                 return;
1482         }
1483         if (kd == NULL) {
1484                 if (memstat_sysctl_uma(mtlp, 0) < 0) {
1485                         xo_warnx("memstat_sysctl_uma: %s",
1486                             memstat_strerror(memstat_mtl_geterror(mtlp)));
1487                         return;
1488                 }
1489         } else {
1490                 if (memstat_kvm_uma(mtlp, kd) < 0) {
1491                         error = memstat_mtl_geterror(mtlp);
1492                         if (error == MEMSTAT_ERROR_KVM)
1493                                 xo_warnx("memstat_kvm_uma: %s",
1494                                     kvm_geterr(kd));
1495                         else
1496                                 xo_warnx("memstat_kvm_uma: %s",
1497                                     memstat_strerror(error));
1498                 }
1499         }
1500         xo_open_container("memory-zone-statistics");
1501         xo_emit("{T:/%-20s} {T:/%6s} {T:/%6s} {T:/%8s} {T:/%8s} {T:/%8s} {T:/%8s}"
1502             "{T:/%4s} {T:/%4s}\n", "ITEM", "SIZE",
1503             "LIMIT", "USED", "FREE", "REQ", "FAIL", "SLEEP", "XDOMAIN");
1504         xo_open_list("zone");
1505         for (mtp = memstat_mtl_first(mtlp); mtp != NULL;
1506             mtp = memstat_mtl_next(mtp)) {
1507                 strlcpy(name, memstat_get_name(mtp), MEMTYPE_MAXNAME);
1508                 strcat(name, ":");
1509                 xo_open_instance("zone");
1510                 xo_emit("{d:name/%-20s}{ke:name/%s} {:size/%6ju}, "
1511                     "{:limit/%6ju},{:used/%8ju},"
1512                     "{:free/%8ju},{:requests/%8ju},"
1513                     "{:fail/%4ju},{:sleep/%4ju},{:xdomain/%4ju}\n", name,
1514                     memstat_get_name(mtp),
1515                     (uintmax_t)memstat_get_size(mtp),
1516                     (uintmax_t)memstat_get_countlimit(mtp),
1517                     (uintmax_t)memstat_get_count(mtp),
1518                     (uintmax_t)memstat_get_free(mtp),
1519                     (uintmax_t)memstat_get_numallocs(mtp),
1520                     (uintmax_t)memstat_get_failures(mtp),
1521                     (uintmax_t)memstat_get_sleeps(mtp),
1522                     (uintmax_t)memstat_get_xdomain(mtp));
1523                 xo_close_instance("zone");
1524         }
1525         memstat_mtl_free(mtlp);
1526         xo_close_list("zone");
1527         xo_close_container("memory-zone-statistics");
1528 }
1529
1530 static void
1531 display_object(struct kinfo_vmobject *kvo)
1532 {
1533         const char *str;
1534
1535         xo_open_instance("object");
1536         xo_emit("{:resident/%5ju} ", (uintmax_t)kvo->kvo_resident);
1537         xo_emit("{:active/%5ju} ", (uintmax_t)kvo->kvo_active);
1538         xo_emit("{:inactive/%5ju} ", (uintmax_t)kvo->kvo_inactive);
1539         xo_emit("{:refcount/%3d} ", kvo->kvo_ref_count);
1540         xo_emit("{:shadowcount/%3d} ", kvo->kvo_shadow_count);
1541         switch (kvo->kvo_memattr) {
1542 #ifdef VM_MEMATTR_UNCACHEABLE
1543         case VM_MEMATTR_UNCACHEABLE:
1544                 str = "UC";
1545                 break;
1546 #endif
1547 #ifdef VM_MEMATTR_WRITE_COMBINING
1548         case VM_MEMATTR_WRITE_COMBINING:
1549                 str = "WC";
1550                 break;
1551 #endif
1552 #ifdef VM_MEMATTR_WRITE_THROUGH
1553         case VM_MEMATTR_WRITE_THROUGH:
1554                 str = "WT";
1555                 break;
1556 #endif
1557 #ifdef VM_MEMATTR_WRITE_PROTECTED
1558         case VM_MEMATTR_WRITE_PROTECTED:
1559                 str = "WP";
1560                 break;
1561 #endif
1562 #ifdef VM_MEMATTR_WRITE_BACK
1563         case VM_MEMATTR_WRITE_BACK:
1564                 str = "WB";
1565                 break;
1566 #endif
1567 #ifdef VM_MEMATTR_WEAK_UNCACHEABLE
1568         case VM_MEMATTR_WEAK_UNCACHEABLE:
1569                 str = "UC-";
1570                 break;
1571 #endif
1572 #ifdef VM_MEMATTR_WB_WA
1573         case VM_MEMATTR_WB_WA:
1574                 str = "WB";
1575                 break;
1576 #endif
1577 #ifdef VM_MEMATTR_NOCACHE
1578         case VM_MEMATTR_NOCACHE:
1579                 str = "NC";
1580                 break;
1581 #endif
1582 #ifdef VM_MEMATTR_DEVICE
1583         case VM_MEMATTR_DEVICE:
1584                 str = "DEV";
1585                 break;
1586 #endif
1587 #ifdef VM_MEMATTR_CACHEABLE
1588         case VM_MEMATTR_CACHEABLE:
1589                 str = "C";
1590                 break;
1591 #endif
1592 #ifdef VM_MEMATTR_PREFETCHABLE
1593         case VM_MEMATTR_PREFETCHABLE:
1594                 str = "PRE";
1595                 break;
1596 #endif
1597         default:
1598                 str = "??";
1599                 break;
1600         }
1601         xo_emit("{:attribute/%-3s} ", str);
1602         switch (kvo->kvo_type) {
1603         case KVME_TYPE_NONE:
1604                 str = "--";
1605                 break;
1606         case KVME_TYPE_DEFAULT:
1607                 str = "df";
1608                 break;
1609         case KVME_TYPE_VNODE:
1610                 str = "vn";
1611                 break;
1612         case KVME_TYPE_SWAP:
1613                 str = "sw";
1614                 break;
1615         case KVME_TYPE_DEVICE:
1616                 str = "dv";
1617                 break;
1618         case KVME_TYPE_PHYS:
1619                 str = "ph";
1620                 break;
1621         case KVME_TYPE_DEAD:
1622                 str = "dd";
1623                 break;
1624         case KVME_TYPE_SG:
1625                 str = "sg";
1626                 break;
1627         case KVME_TYPE_MGTDEVICE:
1628                 str = "md";
1629                 break;
1630         case KVME_TYPE_UNKNOWN:
1631         default:
1632                 str = "??";
1633                 break;
1634         }
1635         xo_emit("{:type/%-2s} ", str);
1636         xo_emit("{:path/%-s}\n", kvo->kvo_path);
1637         xo_close_instance("object");
1638 }
1639
1640 static void
1641 doobjstat(void)
1642 {
1643         struct kinfo_vmobject *kvo;
1644         int cnt, i;
1645
1646         kvo = kinfo_getvmobject(&cnt);
1647         if (kvo == NULL) {
1648                 xo_warn("Failed to fetch VM object list");
1649                 return;
1650         }
1651         xo_emit("{T:RES/%5s} {T:ACT/%5s} {T:INACT/%5s} {T:REF/%3s} {T:SHD/%3s} "
1652             "{T:CM/%3s} {T:TP/%2s} {T:PATH/%s}\n");
1653         xo_open_list("object");
1654         for (i = 0; i < cnt; i++)
1655                 display_object(&kvo[i]);
1656         free(kvo);
1657         xo_close_list("object");
1658 }
1659
1660 /*
1661  * kread reads something from the kernel, given its nlist index.
1662  */
1663 static void
1664 kreado(int nlx, void *addr, size_t size, size_t offset)
1665 {
1666         const char *sym;
1667
1668         if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) {
1669                 sym = namelist[nlx].n_name;
1670                 if (*sym == '_')
1671                         ++sym;
1672                 xo_errx(1, "symbol %s not defined", sym);
1673         }
1674         if ((size_t)kvm_read(kd, namelist[nlx].n_value + offset, addr,
1675             size) != size) {
1676                 sym = namelist[nlx].n_name;
1677                 if (*sym == '_')
1678                         ++sym;
1679                 xo_errx(1, "%s: %s", sym, kvm_geterr(kd));
1680         }
1681 }
1682
1683 static void
1684 kread(int nlx, void *addr, size_t size)
1685 {
1686
1687         kreado(nlx, addr, size, 0);
1688 }
1689
1690 static void
1691 kreadptr(uintptr_t addr, void *buf, size_t size)
1692 {
1693
1694         if ((size_t)kvm_read(kd, addr, buf, size) != size)
1695                 xo_errx(1, "%s", kvm_geterr(kd));
1696 }
1697
1698 static void __dead2
1699 usage(void)
1700 {
1701         xo_error("%s%s",
1702             "usage: vmstat [-afHhimoPsz] [-M core [-N system]] [-c count] [-n devs]\n",
1703             "              [-p type,if,pass] [-w wait] [disks] [wait [count]]\n");
1704         xo_finish();
1705         exit(1);
1706 }