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