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_DEFICIT, X_REC, X_PGIN, X_XSTATS };
  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 #ifdef notyet
 101         [X_DEFICIT] = { .n_name = "_deficit", },
 102         [X_REC] = { .n_name = "_rectime", },
 103         [X_PGIN] = { .n_name = "_pgintime", },
 104         [X_XSTATS] = { .n_name = "_xstats", },
 105 #endif
 106         { .n_name = NULL, },
 107 };
 108
 109 static struct devstat_match *matches;
 110 static struct device_selection *dev_select;
 111 static struct statinfo cur, last;
 112 static devstat_select_mode select_mode;
 113 static size_t size_cp_times;
 114 static long *cur_cp_times, *last_cp_times;
 115 static long generation, select_generation;
 116 static int hz, hdrcnt, maxshowdevs;
 117 static int num_devices, num_devices_specified;
 118 static int num_matches, num_selected, num_selections;
 119 static char **specified_devices;
 120
 121 static struct __vmmeter {
 122         uint64_t v_swtch;
 123         uint64_t v_trap;
 124         uint64_t v_syscall;
 125         uint64_t v_intr;
 126         uint64_t v_soft;
 127         uint64_t v_vm_faults;
 128         uint64_t v_io_faults;
 129         uint64_t v_cow_faults;
 130         uint64_t v_cow_optim;
 131         uint64_t v_zfod;
 132         uint64_t v_ozfod;
 133         uint64_t v_swapin;
 134         uint64_t v_swapout;
 135         uint64_t v_swappgsin;
 136         uint64_t v_swappgsout;
 137         uint64_t v_vnodein;
 138         uint64_t v_vnodeout;
 139         uint64_t v_vnodepgsin;
 140         uint64_t v_vnodepgsout;
 141         uint64_t v_intrans;
 142         uint64_t v_reactivated;
 143         uint64_t v_pdwakeups;
 144         uint64_t v_pdpages;
 145         uint64_t v_pdshortfalls;
 146         uint64_t v_dfree;
 147         uint64_t v_pfree;
 148         uint64_t v_tfree;
 149         uint64_t v_forks;
 150         uint64_t v_vforks;
 151         uint64_t v_rforks;
 152         uint64_t v_kthreads;
 153         uint64_t v_forkpages;
 154         uint64_t v_vforkpages;
 155         uint64_t v_rforkpages;
 156         uint64_t v_kthreadpages;
 157         u_int v_page_size;
 158         u_int v_page_count;
 159         u_int v_free_reserved;
 160         u_int v_free_target;
 161         u_int v_free_min;
 162         u_int v_free_count;
 163         u_int v_wire_count;
 164         u_int v_active_count;
 165         u_int v_inactive_target;
 166         u_int v_inactive_count;
 167         u_int v_laundry_count;
 168         u_int v_pageout_free_min;
 169         u_int v_interrupt_free_min;
 170         u_int v_free_severe;
 171 } sum, osum;
 172
 173 #define VMSTAT_DEFAULT_LINES    20      /* Default number of `winlines'. */
 174 static volatile sig_atomic_t wresized;          /* Tty resized when non-zero. */
 175 static int winlines = VMSTAT_DEFAULT_LINES; /* Current number of tty rows. */
 176
 177 static int      aflag;
 178 static int      nflag;
 179 static int      Pflag;
 180 static int      hflag;
 181
 182 static kvm_t    *kd;
 183
 184 #define FORKSTAT        0x01
 185 #define INTRSTAT        0x02
 186 #define MEMSTAT         0x04
 187 #define SUMSTAT         0x08
 188 #define TIMESTAT        0x10
 189 #define VMSTAT          0x20
 190 #define ZMEMSTAT        0x40
 191 #define OBJSTAT         0x80
 192
 193 static void     cpustats(void);
 194 static void     pcpustats(u_long, int);
 195 static void     devstats(void);
 196 static void     doforkst(void);
 197 static void     dointr(unsigned int, int);
 198 static void     doobjstat(void);
 199 static void     dosum(void);
 200 static void     dovmstat(unsigned int, int);
 201 static void     domemstat_malloc(void);
 202 static void     domemstat_zone(void);
 203 static void     kread(int, void *, size_t);
 204 static void     kreado(int, void *, size_t, size_t);
 205 static void     needhdr(int);
 206 static void     needresize(int);
 207 static void     doresize(void);
 208 static void     printhdr(int, u_long);
 209 static void     usage(void);
 210
 211 static long     pct(long, long);
 212 static long long        getuptime(void);
 213
 214 static char     **getdrivedata(char **);
 215
 216 int
 217 main(int argc, char *argv[])
 218 {
 219         char *bp, *buf, *memf, *nlistf;
 220         float f;
 221         int bufsize, c, reps, todo;
 222         size_t len;
 223         unsigned int interval;
 224         char errbuf[_POSIX2_LINE_MAX];
 225
 226         memf = nlistf = NULL;
 227         interval = reps = todo = 0;
 228         maxshowdevs = 2;
 229         hflag = isatty(1);
 230
 231         argc = xo_parse_args(argc, argv);
 232         if (argc < 0)
 233                 return (argc);
 234
 235         while ((c = getopt(argc, argv, "ac:fhHiM:mN:n:oPp:stw:z")) != -1) {
 236                 switch (c) {
 237                 case 'a':
 238                         aflag++;
 239                         break;
 240                 case 'c':
 241                         reps = atoi(optarg);
 242                         break;
 243                 case 'P':
 244                         Pflag++;
 245                         break;
 246                 case 'f':
 247                         todo |= FORKSTAT;
 248                         break;
 249                 case 'h':
 250                         hflag = 1;
 251                         break;
 252                 case 'H':
 253                         hflag = 0;
 254                         break;
 255                 case 'i':
 256                         todo |= INTRSTAT;
 257                         break;
 258                 case 'M':
 259                         memf = optarg;
 260                         break;
 261                 case 'm':
 262                         todo |= MEMSTAT;
 263                         break;
 264                 case 'N':
 265                         nlistf = optarg;
 266                         break;
 267                 case 'n':
 268                         nflag = 1;
 269                         maxshowdevs = atoi(optarg);
 270                         if (maxshowdevs < 0)
 271                                 xo_errx(1, "number of devices %d is < 0",
 272                                     maxshowdevs);
 273                         break;
 274                 case 'o':
 275                         todo |= OBJSTAT;
 276                         break;
 277                 case 'p':
 278                         if (devstat_buildmatch(optarg, &matches, &num_matches)
 279                             != 0)
 280                                 xo_errx(1, "%s", devstat_errbuf);
 281                         break;
 282                 case 's':
 283                         todo |= SUMSTAT;
 284                         break;
 285                 case 't':
 286 #ifdef notyet
 287                         todo |= TIMESTAT;
 288 #else
 289                         xo_errx(EX_USAGE,
 290                             "sorry, -t is not (re)implemented yet");
 291 #endif
 292                         break;
 293                 case 'w':
 294                         /* Convert to milliseconds. */
 295                         f = atof(optarg);
 296                         interval = f * 1000;
 297                         break;
 298                 case 'z':
 299                         todo |= ZMEMSTAT;
 300                         break;
 301                 case '?':
 302                 default:
 303                         usage();
 304                 }
 305         }
 306         argc -= optind;
 307         argv += optind;
 308
 309         xo_set_version(VMSTAT_XO_VERSION);
 310         if (todo == 0)
 311                 todo = VMSTAT;
 312
 313         if (memf != NULL) {
 314                 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
 315                 if (kd == NULL)
 316                         xo_errx(1, "kvm_openfiles: %s", errbuf);
 317         }
 318
 319 retry_nlist:
 320         if (kd != NULL && (c = kvm_nlist(kd, namelist)) != 0) {
 321                 if (c > 0) {
 322                         bufsize = 0;
 323                         len = 0;
 324
 325                         /*
 326                          * 'cnt' was renamed to 'vm_cnt'.  If 'vm_cnt' is not
 327                          * found try looking up older 'cnt' symbol.
 328                          * */
 329                         if (namelist[X_SUM].n_type == 0 &&
 330                             strcmp(namelist[X_SUM].n_name, "_vm_cnt") == 0) {
 331                                 namelist[X_SUM].n_name = "_cnt";
 332                                 goto retry_nlist;
 333                         }
 334
 335                         for (c = 0; c < (int)(nitems(namelist)); c++)
 336                                 if (namelist[c].n_type == 0)
 337                                         bufsize += strlen(namelist[c].n_name)
 338                                             + 1;
 339                         bufsize += len + 1;
 340                         buf = bp = alloca(bufsize);
 341
 342                         for (c = 0; c < (int)(nitems(namelist)); c++)
 343                                 if (namelist[c].n_type == 0) {
 344                                         xo_error(" %s",
 345                                             namelist[c].n_name);
 346                                         len = strlen(namelist[c].n_name);
 347                                         *bp++ = ' ';
 348                                         memcpy(bp, namelist[c].n_name, len);
 349                                         bp += len;
 350                                 }
 351                         *bp = '\0';
 352                         xo_error("undefined symbols:\n", buf);
 353                 } else
 354                         xo_warnx("kvm_nlist: %s", kvm_geterr(kd));
 355                 xo_finish();
 356                 exit(1);
 357         }
 358         if (kd && Pflag)
 359                 xo_errx(1, "Cannot use -P with crash dumps");
 360
 361         if (todo & VMSTAT) {
 362                 /*
 363                  * Make sure that the userland devstat version matches the
 364                  * kernel devstat version.  If not, exit and print a
 365                  * message informing the user of his mistake.
 366                  */
 367                 if (devstat_checkversion(NULL) < 0)
 368                         xo_errx(1, "%s", devstat_errbuf);
 369
 370
 371                 argv = getdrivedata(argv);
 372         }
 373
 374         if (*argv) {
 375                 f = atof(*argv);
 376                 interval = f * 1000;
 377                 if (*++argv)
 378                         reps = atoi(*argv);
 379         }
 380
 381         if (interval) {
 382                 if (!reps)
 383                         reps = -1;
 384         } else if (reps)
 385                 interval = 1 * 1000;
 386
 387         if (todo & FORKSTAT)
 388                 doforkst();
 389         if (todo & MEMSTAT)
 390                 domemstat_malloc();
 391         if (todo & ZMEMSTAT)
 392                 domemstat_zone();
 393         if (todo & SUMSTAT)
 394                 dosum();
 395         if (todo & OBJSTAT)
 396                 doobjstat();
 397 #ifdef notyet
 398         if (todo & TIMESTAT)
 399                 dotimes();
 400 #endif
 401         if (todo & INTRSTAT)
 402                 dointr(interval, reps);
 403         if (todo & VMSTAT)
 404                 dovmstat(interval, reps);
 405         xo_finish();
 406         exit(0);
 407 }
 408
 409 static int
 410 mysysctl(const char *name, void *oldp, size_t *oldlenp)
 411 {
 412         int error;
 413
 414         error = sysctlbyname(name, oldp, oldlenp, NULL, 0);
 415         if (error != 0 && errno != ENOMEM)
 416                 xo_err(1, "sysctl(%s)", name);
 417         return (error);
 418 }
 419
 420 static char **
 421 getdrivedata(char **argv)
 422 {
 423
 424         if ((num_devices = devstat_getnumdevs(NULL)) < 0)
 425                 xo_errx(1, "%s", devstat_errbuf);
 426
 427         cur.dinfo = (struct devinfo *)calloc(1, sizeof(struct devinfo));
 428         last.dinfo = (struct devinfo *)calloc(1, sizeof(struct devinfo));
 429
 430         if (devstat_getdevs(NULL, &cur) == -1)
 431                 xo_errx(1, "%s", devstat_errbuf);
 432
 433         num_devices = cur.dinfo->numdevs;
 434         generation = cur.dinfo->generation;
 435
 436         specified_devices = malloc(sizeof(char *));
 437         for (num_devices_specified = 0; *argv; ++argv) {
 438                 if (isdigit(**argv))
 439                         break;
 440                 num_devices_specified++;
 441                 specified_devices = reallocf(specified_devices,
 442                     sizeof(char *) * num_devices_specified);
 443                 if (specified_devices == NULL) {
 444                         xo_errx(1, "%s", "reallocf (specified_devices)");
 445                 }
 446                 specified_devices[num_devices_specified - 1] = *argv;
 447         }
 448         dev_select = NULL;
 449
 450         if (nflag == 0 && maxshowdevs < num_devices_specified)
 451                 maxshowdevs = num_devices_specified;
 452
 453         /*
 454          * People are generally only interested in disk statistics when
 455          * they're running vmstat.  So, that's what we're going to give
 456          * them if they don't specify anything by default.  We'll also give
 457          * them any other random devices in the system so that we get to
 458          * maxshowdevs devices, if that many devices exist.  If the user
 459          * specifies devices on the command line, either through a pattern
 460          * match or by naming them explicitly, we will give the user only
 461          * those devices.
 462          */
 463         if ((num_devices_specified == 0) && (num_matches == 0)) {
 464                 if (devstat_buildmatch(da, &matches, &num_matches) != 0)
 465                         xo_errx(1, "%s", devstat_errbuf);
 466                 select_mode = DS_SELECT_ADD;
 467         } else
 468                 select_mode = DS_SELECT_ONLY;
 469
 470         /*
 471          * At this point, selectdevs will almost surely indicate that the
 472          * device list has changed, so we don't look for return values of 0
 473          * or 1.  If we get back -1, though, there is an error.
 474          */
 475         if (devstat_selectdevs(&dev_select, &num_selected, &num_selections,
 476             &select_generation, generation, cur.dinfo->devices,
 477             num_devices, matches, num_matches, specified_devices,
 478             num_devices_specified, select_mode,
 479             maxshowdevs, 0) == -1)
 480                 xo_errx(1, "%s", devstat_errbuf);
 481
 482         return(argv);
 483 }
 484
 485 /* Return system uptime in nanoseconds */
 486 static long long
 487 getuptime(void)
 488 {
 489         struct timespec sp;
 490
 491         (void)clock_gettime(CLOCK_UPTIME, &sp);
 492         return((long long)sp.tv_sec * 1000000000LL + sp.tv_nsec);
 493 }
 494
 495 static void
 496 fill_vmmeter(struct __vmmeter *vmmp)
 497 {
 498         struct vmmeter vm_cnt;
 499         size_t size;
 500
 501         if (kd != NULL) {
 502                 kread(X_SUM, &vm_cnt, sizeof(vm_cnt));
 503 #define GET_COUNTER(name) \
 504                 vmmp->name = kvm_counter_u64_fetch(kd, (u_long)vm_cnt.name)
 505                 GET_COUNTER(v_swtch);
 506                 GET_COUNTER(v_trap);
 507                 GET_COUNTER(v_syscall);
 508                 GET_COUNTER(v_intr);
 509                 GET_COUNTER(v_soft);
 510                 GET_COUNTER(v_vm_faults);
 511                 GET_COUNTER(v_io_faults);
 512                 GET_COUNTER(v_cow_faults);
 513                 GET_COUNTER(v_cow_optim);
 514                 GET_COUNTER(v_zfod);
 515                 GET_COUNTER(v_ozfod);
 516                 GET_COUNTER(v_swapin);
 517                 GET_COUNTER(v_swapout);
 518                 GET_COUNTER(v_swappgsin);
 519                 GET_COUNTER(v_swappgsout);
 520                 GET_COUNTER(v_vnodein);
 521                 GET_COUNTER(v_vnodeout);
 522                 GET_COUNTER(v_vnodepgsin);
 523                 GET_COUNTER(v_vnodepgsout);
 524                 GET_COUNTER(v_intrans);
 525                 GET_COUNTER(v_tfree);
 526                 GET_COUNTER(v_forks);
 527                 GET_COUNTER(v_vforks);
 528                 GET_COUNTER(v_rforks);
 529                 GET_COUNTER(v_kthreads);
 530                 GET_COUNTER(v_forkpages);
 531                 GET_COUNTER(v_vforkpages);
 532                 GET_COUNTER(v_rforkpages);
 533                 GET_COUNTER(v_kthreadpages);
 534 #undef GET_COUNTER
 535         } else {
 536 #define GET_VM_STATS(cat, name) do {                                    \
 537         size = sizeof(vmmp->name);                                      \
 538         mysysctl("vm.stats." #cat "." #name, &vmmp->name, &size);       \
 539 } while (0)
 540                 /* sys */
 541                 GET_VM_STATS(sys, v_swtch);
 542                 GET_VM_STATS(sys, v_trap);
 543                 GET_VM_STATS(sys, v_syscall);
 544                 GET_VM_STATS(sys, v_intr);
 545                 GET_VM_STATS(sys, v_soft);
 546
 547                 /* vm */
 548                 GET_VM_STATS(vm, v_vm_faults);
 549                 GET_VM_STATS(vm, v_io_faults);
 550                 GET_VM_STATS(vm, v_cow_faults);
 551                 GET_VM_STATS(vm, v_cow_optim);
 552                 GET_VM_STATS(vm, v_zfod);
 553                 GET_VM_STATS(vm, v_ozfod);
 554                 GET_VM_STATS(vm, v_swapin);
 555                 GET_VM_STATS(vm, v_swapout);
 556                 GET_VM_STATS(vm, v_swappgsin);
 557                 GET_VM_STATS(vm, v_swappgsout);
 558                 GET_VM_STATS(vm, v_vnodein);
 559                 GET_VM_STATS(vm, v_vnodeout);
 560                 GET_VM_STATS(vm, v_vnodepgsin);
 561                 GET_VM_STATS(vm, v_vnodepgsout);
 562                 GET_VM_STATS(vm, v_intrans);
 563                 GET_VM_STATS(vm, v_reactivated);
 564                 GET_VM_STATS(vm, v_pdwakeups);
 565                 GET_VM_STATS(vm, v_pdpages);
 566                 GET_VM_STATS(vm, v_pdshortfalls);
 567                 GET_VM_STATS(vm, v_dfree);
 568                 GET_VM_STATS(vm, v_pfree);
 569                 GET_VM_STATS(vm, v_tfree);
 570                 GET_VM_STATS(vm, v_page_size);
 571                 GET_VM_STATS(vm, v_page_count);
 572                 GET_VM_STATS(vm, v_free_reserved);
 573                 GET_VM_STATS(vm, v_free_target);
 574                 GET_VM_STATS(vm, v_free_min);
 575                 GET_VM_STATS(vm, v_free_count);
 576                 GET_VM_STATS(vm, v_wire_count);
 577                 GET_VM_STATS(vm, v_active_count);
 578                 GET_VM_STATS(vm, v_inactive_target);
 579                 GET_VM_STATS(vm, v_inactive_count);
 580                 GET_VM_STATS(vm, v_laundry_count);
 581                 GET_VM_STATS(vm, v_pageout_free_min);
 582                 GET_VM_STATS(vm, v_interrupt_free_min);
 583                 /*GET_VM_STATS(vm, v_free_severe);*/
 584                 GET_VM_STATS(vm, v_forks);
 585                 GET_VM_STATS(vm, v_vforks);
 586                 GET_VM_STATS(vm, v_rforks);
 587                 GET_VM_STATS(vm, v_kthreads);
 588                 GET_VM_STATS(vm, v_forkpages);
 589                 GET_VM_STATS(vm, v_vforkpages);
 590                 GET_VM_STATS(vm, v_rforkpages);
 591                 GET_VM_STATS(vm, v_kthreadpages);
 592 #undef GET_VM_STATS
 593         }
 594 }
 595
 596 static void
 597 fill_vmtotal(struct vmtotal *vmtp)
 598 {
 599         size_t size;
 600
 601         if (kd != NULL) {
 602                 /* XXX fill vmtp */
 603                 xo_errx(1, "not implemented");
 604         } else {
 605                 size = sizeof(*vmtp);
 606                 mysysctl("vm.vmtotal", vmtp, &size);
 607                 if (size != sizeof(*vmtp))
 608                         xo_errx(1, "vm.total size mismatch");
 609         }
 610 }
 611
 612 /* Determine how many cpu columns, and what index they are in kern.cp_times */
 613 static int
 614 getcpuinfo(u_long *maskp, int *maxidp)
 615 {
 616         long *times;
 617         u_long mask;
 618         size_t size;
 619         int empty, i, j, maxcpu, maxid, ncpus;
 620
 621         if (kd != NULL)
 622                 xo_errx(1, "not implemented");
 623         mask = 0;
 624         ncpus = 0;
 625         size = sizeof(maxcpu);
 626         mysysctl("kern.smp.maxcpus", &maxcpu, &size);
 627         if (size != sizeof(maxcpu))
 628                 xo_errx(1, "sysctl kern.smp.maxcpus");
 629         size = sizeof(long) * maxcpu * CPUSTATES;
 630         times = malloc(size);
 631         if (times == NULL)
 632                 xo_err(1, "malloc %zd bytes", size);
 633         mysysctl("kern.cp_times", times, &size);
 634         maxid = (size / CPUSTATES / sizeof(long)) - 1;
 635         for (i = 0; i <= maxid; i++) {
 636                 empty = 1;
 637                 for (j = 0; empty && j < CPUSTATES; j++) {
 638                         if (times[i * CPUSTATES + j] != 0)
 639                                 empty = 0;
 640                 }
 641                 if (!empty) {
 642                         mask |= (1ul << i);
 643                         ncpus++;
 644                 }
 645         }
 646         if (maskp)
 647                 *maskp = mask;
 648         if (maxidp)
 649                 *maxidp = maxid;
 650         return (ncpus);
 651 }
 652
 653
 654 static void
 655 prthuman(const char *name, uint64_t val, int size)
 656 {
 657         int flags;
 658         char buf[10];
 659         char fmt[128];
 660
 661         snprintf(fmt, sizeof(fmt), "{:%s/%%*s}", name);
 662
 663         if (size < 5 || size > 9)
 664                 xo_errx(1, "doofus");
 665         flags = HN_B | HN_NOSPACE | HN_DECIMAL;
 666         humanize_number(buf, size, val, "", HN_AUTOSCALE, flags);
 667         xo_attr("value", "%ju", (uintmax_t) val);
 668         xo_emit(fmt, size, buf);
 669 }
 670
 671 static void
 672 dovmstat(unsigned int interval, int reps)
 673 {
 674         struct clockinfo clockrate;
 675         struct vmtotal total;
 676         struct devinfo *tmp_dinfo;
 677         u_long cpumask;
 678         size_t size;
 679         time_t uptime, halfuptime;
 680         int ncpus, maxid, rate_adj, retval;
 681
 682         uptime = getuptime() / 1000000000LL;
 683         halfuptime = uptime / 2;
 684         rate_adj = 1;
 685         ncpus = 1;
 686         maxid = 0;
 687         cpumask = 0;
 688
 689         /*
 690          * If the user stops the program (control-Z) and then resumes it,
 691          * print out the header again.
 692          */
 693         (void)signal(SIGCONT, needhdr);
 694
 695         /*
 696          * If our standard output is a tty, then install a SIGWINCH handler
 697          * and set wresized so that our first iteration through the main
 698          * vmstat loop will peek at the terminal's current rows to find out
 699          * how many lines can fit in a screenful of output.
 700          */
 701         if (isatty(fileno(stdout)) != 0) {
 702                 wresized = 1;
 703                 (void)signal(SIGWINCH, needresize);
 704         } else {
 705                 wresized = 0;
 706                 winlines = VMSTAT_DEFAULT_LINES;
 707         }
 708
 709         if (kd != NULL) {
 710                 if (namelist[X_STATHZ].n_type != 0 &&
 711                     namelist[X_STATHZ].n_value != 0)
 712                         kread(X_STATHZ, &hz, sizeof(hz));
 713                 if (!hz)
 714                         kread(X_HZ, &hz, sizeof(hz));
 715         } else {
 716                 size = sizeof(clockrate);
 717                 mysysctl("kern.clockrate", &clockrate, &size);
 718                 if (size != sizeof(clockrate))
 719                         xo_errx(1, "clockrate size mismatch");
 720                 hz = clockrate.hz;
 721         }
 722
 723         if (Pflag) {
 724                 ncpus = getcpuinfo(&cpumask, &maxid);
 725                 size_cp_times = sizeof(long) * (maxid + 1) * CPUSTATES;
 726                 cur_cp_times = calloc(1, size_cp_times);
 727                 last_cp_times = calloc(1, size_cp_times);
 728         }
 729         for (hdrcnt = 1;;) {
 730                 if (!--hdrcnt)
 731                         printhdr(maxid, cpumask);
 732                 if (kd != NULL) {
 733                         if (kvm_getcptime(kd, cur.cp_time) < 0)
 734                                 xo_errx(1, "kvm_getcptime: %s", kvm_geterr(kd));
 735                 } else {
 736                         size = sizeof(cur.cp_time);
 737                         mysysctl("kern.cp_time", &cur.cp_time, &size);
 738                         if (size != sizeof(cur.cp_time))
 739                                 xo_errx(1, "cp_time size mismatch");
 740                 }
 741                 if (Pflag) {
 742                         size = size_cp_times;
 743                         mysysctl("kern.cp_times", cur_cp_times, &size);
 744                         if (size != size_cp_times)
 745                                 xo_errx(1, "cp_times mismatch");
 746                 }
 747
 748                 tmp_dinfo = last.dinfo;
 749                 last.dinfo = cur.dinfo;
 750                 cur.dinfo = tmp_dinfo;
 751                 last.snap_time = cur.snap_time;
 752
 753                 /*
 754                  * Here what we want to do is refresh our device stats.
 755                  * getdevs() returns 1 when the device list has changed.
 756                  * If the device list has changed, we want to go through
 757                  * the selection process again, in case a device that we
 758                  * were previously displaying has gone away.
 759                  */
 760                 switch (devstat_getdevs(NULL, &cur)) {
 761                 case -1:
 762                         xo_errx(1, "%s", devstat_errbuf);
 763                         break;
 764                 case 1:
 765                         num_devices = cur.dinfo->numdevs;
 766                         generation = cur.dinfo->generation;
 767
 768                         retval = devstat_selectdevs(&dev_select, &num_selected,
 769                             &num_selections, &select_generation,
 770                             generation, cur.dinfo->devices,
 771                             num_devices, matches, num_matches,
 772                             specified_devices,
 773                             num_devices_specified, select_mode,
 774                             maxshowdevs, 0);
 775                         switch (retval) {
 776                         case -1:
 777                                 xo_errx(1, "%s", devstat_errbuf);
 778                                 break;
 779                         case 1:
 780                                 printhdr(maxid, cpumask);
 781                                 break;
 782                         default:
 783                                 break;
 784                         }
 785                         break;
 786                 default:
 787                         break;
 788                 }
 789
 790                 fill_vmmeter(&sum);
 791                 fill_vmtotal(&total);
 792                 xo_open_container("processes");
 793                 xo_emit("{:runnable/%1d} {:waiting/%ld} "
 794                     "{:swapped-out/%ld}", total.t_rq - 1, total.t_dw +
 795                     total.t_pw, total.t_sw);
 796                 xo_close_container("processes");
 797                 xo_open_container("memory");
 798 #define vmstat_pgtok(a) ((uintmax_t)(a) * (sum.v_page_size >> 10))
 799 #define rate(x) (((x) * rate_adj + halfuptime) / uptime)        /* round */
 800                 if (hflag) {
 801                         xo_emit("");
 802                         prthuman("available-memory",
 803                             total.t_avm * (uint64_t)sum.v_page_size, 5);
 804                         xo_emit(" ");
 805                         prthuman("free-memory",
 806                             total.t_free * (uint64_t)sum.v_page_size, 5);
 807                         xo_emit(" ");
 808                 } else {
 809                         xo_emit(" ");
 810                         xo_emit("{:available-memory/%7ju}",
 811                             vmstat_pgtok(total.t_avm));
 812                         xo_emit(" ");
 813                         xo_emit("{:free-memory/%7ju}",
 814                             vmstat_pgtok(total.t_free));
 815                         xo_emit(" ");
 816                 }
 817                 xo_emit("{:total-page-faults/%5lu} ",
 818                     (unsigned long)rate(sum.v_vm_faults -
 819                     osum.v_vm_faults));
 820                 xo_close_container("memory");
 821
 822                 xo_open_container("paging-rates");
 823                 xo_emit("{:page-reactivated/%3lu} ",
 824                     (unsigned long)rate(sum.v_reactivated -
 825                     osum.v_reactivated));
 826                 xo_emit("{:paged-in/%3lu} ",
 827                     (unsigned long)rate(sum.v_swapin + sum.v_vnodein -
 828                     (osum.v_swapin + osum.v_vnodein)));
 829                 xo_emit("{:paged-out/%3lu} ",
 830                     (unsigned long)rate(sum.v_swapout + sum.v_vnodeout -
 831                     (osum.v_swapout + osum.v_vnodeout)));
 832                 xo_emit("{:freed/%5lu} ",
 833                     (unsigned long)rate(sum.v_tfree - osum.v_tfree));
 834                 xo_emit("{:scanned/%4lu} ",
 835                     (unsigned long)rate(sum.v_pdpages - osum.v_pdpages));
 836                 xo_close_container("paging-rates");
 837
 838                 devstats();
 839                 xo_open_container("fault-rates");
 840                 xo_emit("{:interrupts/%4lu} {:system-calls/%5lu} "
 841                     "{:context-switches/%5lu}",
 842                     (unsigned long)rate(sum.v_intr - osum.v_intr),
 843                     (unsigned long)rate(sum.v_syscall - osum.v_syscall),
 844                     (unsigned long)rate(sum.v_swtch - osum.v_swtch));
 845                 xo_close_container("fault-rates");
 846                 if (Pflag)
 847                         pcpustats(cpumask, maxid);
 848                 else
 849                         cpustats();
 850                 xo_emit("\n");
 851                 xo_flush();
 852                 if (reps >= 0 && --reps <= 0)
 853                         break;
 854                 osum = sum;
 855                 uptime = interval;
 856                 rate_adj = 1000;
 857                 /*
 858                  * We round upward to avoid losing low-frequency events
 859                  * (i.e., >= 1 per interval but < 1 per millisecond).
 860                  */
 861                 if (interval != 1)
 862                         halfuptime = (uptime + 1) / 2;
 863                 else
 864                         halfuptime = 0;
 865                 (void)usleep(interval * 1000);
 866         }
 867 }
 868
 869 static void
 870 printhdr(int maxid, u_long cpumask)
 871 {
 872         int i, num_shown;
 873
 874         num_shown = MIN(num_selected, maxshowdevs);
 875         if (hflag)
 876                 xo_emit("{T:procs}  {T:memory}       {T:/page%*s}", 19, "");
 877         else
 878                 xo_emit("{T:procs}     {T:memory}        {T:/page%*s}", 19, "");
 879         if (num_shown > 1)
 880                 xo_emit(" {T:/disks %*s}", num_shown * 4 - 7, "");
 881         else if (num_shown == 1)
 882                 xo_emit("   {T:disks}");
 883         xo_emit("   {T:faults}      ");
 884         if (Pflag) {
 885                 for (i = 0; i <= maxid; i++) {
 886                         if (cpumask & (1ul << i))
 887                                 xo_emit("  {T:/cpu%d}   ", i);
 888                 }
 889                 xo_emit("\n");
 890         } else
 891                 xo_emit("   {T:cpu}\n");
 892         if (hflag) {
 893                 xo_emit("{T:r} {T:b} {T:w}  {T:avm}   {T:fre}   {T:flt}  {T:re}"
 894                     "  {T:pi}  {T:po}    {T:fr}   {T:sr} ");
 895         } else {
 896                 xo_emit("{T:r} {T:b} {T:w}     {T:avm}     {T:fre}  {T:flt}  "
 897                     "{T:re}  {T:pi}  {T:po}    {T:fr}   {T:sr} ");
 898         }
 899         for (i = 0; i < num_devices; i++)
 900                 if ((dev_select[i].selected) &&
 901                     (dev_select[i].selected <= maxshowdevs))
 902                         xo_emit("{T:/%c%c%d} ", dev_select[i].device_name[0],
 903                             dev_select[i].device_name[1],
 904                             dev_select[i].unit_number);
 905         xo_emit("  {T:in}    {T:sy}    {T:cs}");
 906         if (Pflag) {
 907                 for (i = 0; i <= maxid; i++) {
 908                         if (cpumask & (1ul << i))
 909                                 xo_emit(" {T:us} {T:sy} {T:id}");
 910                 }
 911                 xo_emit("\n");
 912         } else
 913                 xo_emit(" {T:us} {T:sy} {T:id}\n");
 914         if (wresized != 0)
 915                 doresize();
 916         hdrcnt = winlines;
 917 }
 918
 919 /*
 920  * Force a header to be prepended to the next output.
 921  */
 922 static void
 923 needhdr(int dummy __unused)
 924 {
 925
 926         hdrcnt = 1;
 927 }
 928
 929 /*
 930  * When the terminal is resized, force an update of the maximum number of rows
 931  * printed between each header repetition.  Then force a new header to be
 932  * prepended to the next output.
 933  */
 934 void
 935 needresize(int signo __unused)
 936 {
 937
 938         wresized = 1;
 939         hdrcnt = 1;
 940 }
 941
 942 /*
 943  * Update the global `winlines' count of terminal rows.
 944  */
 945 void
 946 doresize(void)
 947 {
 948         struct winsize w;
 949         int status;
 950
 951         for (;;) {
 952                 status = ioctl(fileno(stdout), TIOCGWINSZ, &w);
 953                 if (status == -1 && errno == EINTR)
 954                         continue;
 955                 else if (status == -1)
 956                         xo_err(1, "ioctl");
 957                 if (w.ws_row > 3)
 958                         winlines = w.ws_row - 3;
 959                 else
 960                         winlines = VMSTAT_DEFAULT_LINES;
 961                 break;
 962         }
 963
 964         /*
 965          * Inhibit doresize() calls until we are rescheduled by SIGWINCH.
 966          */
 967         wresized = 0;
 968 }
 969
 970 #ifdef notyet
 971 static void
 972 dotimes(void)
 973 {
 974         unsigned int pgintime, rectime;
 975
 976         kread(X_REC, &rectime, sizeof(rectime));
 977         kread(X_PGIN, &pgintime, sizeof(pgintime));
 978         kread(X_SUM, &sum, sizeof(sum));
 979         xo_emit("{:page-reclaims/%u} {N:reclaims}, "
 980             "{:reclaim-time/%u} {N:total time (usec)}\n",
 981             sum.v_pgrec, rectime);
 982         xo_emit("{L:average}: {:reclaim-average/%u} {N:usec \\/ reclaim}\n",
 983             rectime / sum.v_pgrec);
 984         xo_emit("\n");
 985         xo_emit("{:page-ins/%u} {N:page ins}, "
 986             "{:page-in-time/%u} {N:total time (msec)}\n",
 987             sum.v_pgin, pgintime / 10);
 988         xo_emit("{L:average}: {:average/%8.1f} {N:msec \\/ page in}\n",
 989             pgintime / (sum.v_pgin * 10.0));
 990 }
 991 #endif
 992
 993 static long
 994 pct(long top, long bot)
 995 {
 996         long ans;
 997
 998         if (bot == 0)
 999                 return(0);
1000         ans = (quad_t)top * 100 / bot;
1001         return (ans);
1002 }
1003
1004 #define PCT(top, bot) pct((long)(top), (long)(bot))
1005
1006 static void
1007 dosum(void)
1008 {
1009         struct nchstats lnchstats;
1010         size_t size;
1011         long nchtotal;
1012
1013         fill_vmmeter(&sum);
1014         xo_open_container("summary-statistics");
1015         xo_emit("{:context-switches/%9u} {N:cpu context switches}\n",
1016             sum.v_swtch);
1017         xo_emit("{:interrupts/%9u} {N:device interrupts}\n",
1018             sum.v_intr);
1019         xo_emit("{:software-interrupts/%9u} {N:software interrupts}\n",
1020             sum.v_soft);
1021         xo_emit("{:traps/%9u} {N:traps}\n", sum.v_trap);
1022         xo_emit("{:system-calls/%9u} {N:system calls}\n",
1023             sum.v_syscall);
1024         xo_emit("{:kernel-threads/%9u} {N:kernel threads created}\n",
1025             sum.v_kthreads);
1026         xo_emit("{:forks/%9u} {N: fork() calls}\n", sum.v_forks);
1027         xo_emit("{:vforks/%9u} {N:vfork() calls}\n",
1028             sum.v_vforks);
1029         xo_emit("{:rforks/%9u} {N:rfork() calls}\n",
1030             sum.v_rforks);
1031         xo_emit("{:swap-ins/%9u} {N:swap pager pageins}\n",
1032             sum.v_swapin);
1033         xo_emit("{:swap-in-pages/%9u} {N:swap pager pages paged in}\n",
1034             sum.v_swappgsin);
1035         xo_emit("{:swap-outs/%9u} {N:swap pager pageouts}\n",
1036             sum.v_swapout);
1037         xo_emit("{:swap-out-pages/%9u} {N:swap pager pages paged out}\n",
1038             sum.v_swappgsout);
1039         xo_emit("{:vnode-page-ins/%9u} {N:vnode pager pageins}\n",
1040             sum.v_vnodein);
1041         xo_emit("{:vnode-page-in-pages/%9u} {N:vnode pager pages paged in}\n",
1042             sum.v_vnodepgsin);
1043         xo_emit("{:vnode-page-outs/%9u} {N:vnode pager pageouts}\n",
1044             sum.v_vnodeout);
1045         xo_emit("{:vnode-page-out-pages/%9u} {N:vnode pager pages paged out}\n",
1046             sum.v_vnodepgsout);
1047         xo_emit("{:page-daemon-wakeups/%9u} {N:page daemon wakeups}\n",
1048             sum.v_pdwakeups);
1049         xo_emit("{:page-daemon-pages/%9u} {N:pages examined by the page "
1050             "daemon}\n", sum.v_pdpages);
1051         xo_emit("{:page-reclamation-shortfalls/%9u} {N:clean page reclamation "
1052             "shortfalls}\n", sum.v_pdshortfalls);
1053         xo_emit("{:reactivated/%9u} {N:pages reactivated by the page daemon}\n",
1054             sum.v_reactivated);
1055         xo_emit("{:copy-on-write-faults/%9u} {N:copy-on-write faults}\n",
1056             sum.v_cow_faults);
1057         xo_emit("{:copy-on-write-optimized-faults/%9u} {N:copy-on-write "
1058             "optimized faults}\n", sum.v_cow_optim);
1059         xo_emit("{:zero-fill-pages/%9u} {N:zero fill pages zeroed}\n",
1060             sum.v_zfod);
1061         xo_emit("{:zero-fill-prezeroed/%9u} {N:zero fill pages prezeroed}\n",
1062             sum.v_ozfod);
1063         xo_emit("{:intransit-blocking/%9u} {N:intransit blocking page faults}\n",
1064             sum.v_intrans);
1065         xo_emit("{:total-faults/%9u} {N:total VM faults taken}\n",
1066             sum.v_vm_faults);
1067         xo_emit("{:faults-requiring-io/%9u} {N:page faults requiring I\\/O}\n",
1068             sum.v_io_faults);
1069         xo_emit("{:faults-from-thread-creation/%9u} {N:pages affected by "
1070             "kernel thread creation}\n", sum.v_kthreadpages);
1071         xo_emit("{:faults-from-fork/%9u} {N:pages affected by  fork}()\n",
1072             sum.v_forkpages);
1073         xo_emit("{:faults-from-vfork/%9u} {N:pages affected by vfork}()\n",
1074             sum.v_vforkpages);
1075         xo_emit("{:pages-rfork/%9u} {N:pages affected by rfork}()\n",
1076             sum.v_rforkpages);
1077         xo_emit("{:pages-freed/%9u} {N:pages freed}\n",
1078             sum.v_tfree);
1079         xo_emit("{:pages-freed-by-daemon/%9u} {N:pages freed by daemon}\n",
1080             sum.v_dfree);
1081         xo_emit("{:pages-freed-on-exit/%9u} {N:pages freed by exiting processes}\n",
1082             sum.v_pfree);
1083         xo_emit("{:active-pages/%9u} {N:pages active}\n",
1084             sum.v_active_count);
1085         xo_emit("{:inactive-pages/%9u} {N:pages inactive}\n",
1086             sum.v_inactive_count);
1087         xo_emit("{:laundry-pages/%9u} {N:pages in the laundry queue}\n",
1088             sum.v_laundry_count);
1089         xo_emit("{:wired-pages/%9u} {N:pages wired down}\n",
1090             sum.v_wire_count);
1091         xo_emit("{:free-pages/%9u} {N:pages free}\n",
1092             sum.v_free_count);
1093         xo_emit("{:bytes-per-page/%9u} {N:bytes per page}\n", sum.v_page_size);
1094         if (kd != NULL) {
1095                 kread(X_NCHSTATS, &lnchstats, sizeof(lnchstats));
1096         } else {
1097                 size = sizeof(lnchstats);
1098                 mysysctl("vfs.cache.nchstats", &lnchstats, &size);
1099                 if (size != sizeof(lnchstats))
1100                         xo_errx(1, "vfs.cache.nchstats size mismatch");
1101         }
1102         nchtotal = lnchstats.ncs_goodhits + lnchstats.ncs_neghits +
1103             lnchstats.ncs_badhits + lnchstats.ncs_falsehits +
1104             lnchstats.ncs_miss + lnchstats.ncs_long;
1105         xo_emit("{:total-name-lookups/%9ld} {N:total name lookups}\n",
1106             nchtotal);
1107         xo_emit("{P:/%9s} {N:cache hits} "
1108             "({:positive-cache-hits/%ld}% pos + "
1109             "{:negative-cache-hits/%ld}% {N:neg}) "
1110             "system {:cache-hit-percent/%ld}% per-directory\n",
1111             "", PCT(lnchstats.ncs_goodhits, nchtotal),
1112             PCT(lnchstats.ncs_neghits, nchtotal),
1113             PCT(lnchstats.ncs_pass2, nchtotal));
1114         xo_emit("{P:/%9s} {L:deletions} {:deletions/%ld}%, "
1115             "{L:falsehits} {:false-hits/%ld}%, "
1116             "{L:toolong} {:too-long/%ld}%\n", "",
1117             PCT(lnchstats.ncs_badhits, nchtotal),
1118             PCT(lnchstats.ncs_falsehits, nchtotal),
1119             PCT(lnchstats.ncs_long, nchtotal));
1120         xo_close_container("summary-statistics");
1121 }
1122
1123 static void
1124 doforkst(void)
1125 {
1126
1127         fill_vmmeter(&sum);
1128         xo_open_container("fork-statistics");
1129         xo_emit("{:fork/%u} {N:forks}, {:fork-pages/%u} {N:pages}, "
1130             "{L:average} {:fork-average/%.2f}\n",
1131             sum.v_forks, sum.v_forkpages,
1132             sum.v_forks == 0 ? 0.0 :
1133             (double)sum.v_forkpages / sum.v_forks);
1134         xo_emit("{:vfork/%u} {N:vforks}, {:vfork-pages/%u} {N:pages}, "
1135             "{L:average} {:vfork-average/%.2f}\n",
1136             sum.v_vforks, sum.v_vforkpages,
1137             sum.v_vforks == 0 ? 0.0 :
1138             (double)sum.v_vforkpages / sum.v_vforks);
1139         xo_emit("{:rfork/%u} {N:rforks}, {:rfork-pages/%u} {N:pages}, "
1140             "{L:average} {:rfork-average/%.2f}\n",
1141             sum.v_rforks, sum.v_rforkpages,
1142             sum.v_rforks == 0 ? 0.0 :
1143             (double)sum.v_rforkpages / sum.v_rforks);
1144         xo_close_container("fork-statistics");
1145 }
1146
1147 static void
1148 devstats(void)
1149 {
1150         long double busy_seconds, transfers_per_second;
1151         long tmp;
1152         int di, dn, state;
1153
1154         for (state = 0; state < CPUSTATES; ++state) {
1155                 tmp = cur.cp_time[state];
1156                 cur.cp_time[state] -= last.cp_time[state];
1157                 last.cp_time[state] = tmp;
1158         }
1159
1160         busy_seconds = cur.snap_time - last.snap_time;
1161
1162         xo_open_list("device");
1163         for (dn = 0; dn < num_devices; dn++) {
1164                 if (dev_select[dn].selected == 0 ||
1165                     dev_select[dn].selected > maxshowdevs)
1166                         continue;
1167
1168                 di = dev_select[dn].position;
1169
1170                 if (devstat_compute_statistics(&cur.dinfo->devices[di],
1171                     &last.dinfo->devices[di], busy_seconds,
1172                     DSM_TRANSFERS_PER_SECOND, &transfers_per_second,
1173                     DSM_NONE) != 0)
1174                         xo_errx(1, "%s", devstat_errbuf);
1175
1176                 xo_open_instance("device");
1177                 xo_emit("{ekq:name/%c%c%d}{:transfers/%3.0Lf} ",
1178                     dev_select[dn].device_name[0],
1179                     dev_select[dn].device_name[1],
1180                     dev_select[dn].unit_number,
1181                     transfers_per_second);
1182                 xo_close_instance("device");
1183         }
1184         xo_close_list("device");
1185 }
1186
1187 static void
1188 percent(const char *name, double pctv, int *over)
1189 {
1190         int l;
1191         char buf[10];
1192         char fmt[128];
1193
1194         snprintf(fmt, sizeof(fmt), " {:%s/%%*s}", name);
1195         l = snprintf(buf, sizeof(buf), "%.0f", pctv);
1196         if (l == 1 && *over) {
1197                 xo_emit(fmt, 1, buf);
1198                 (*over)--;
1199         } else
1200                 xo_emit(fmt, 2, buf);
1201         if (l > 2)
1202                 (*over)++;
1203 }
1204
1205 static void
1206 cpustats(void)
1207 {
1208         double lpct, total;
1209         int state, over;
1210
1211         total = 0;
1212         for (state = 0; state < CPUSTATES; ++state)
1213                 total += cur.cp_time[state];
1214         if (total > 0)
1215                 lpct = 100.0 / total;
1216         else
1217                 lpct = 0.0;
1218         over = 0;
1219         xo_open_container("cpu-statistics");
1220         percent("user", (cur.cp_time[CP_USER] + cur.cp_time[CP_NICE]) * lpct,
1221             &over);
1222         percent("system", (cur.cp_time[CP_SYS] + cur.cp_time[CP_INTR]) * lpct,
1223             &over);
1224         percent("idle", cur.cp_time[CP_IDLE] * lpct, &over);
1225         xo_close_container("cpu-statistics");
1226 }
1227
1228 static void
1229 pcpustats(u_long cpumask, int maxid)
1230 {
1231         double lpct, total;
1232         long tmp;
1233         int i, over, state;
1234
1235         /* devstats does this for cp_time */
1236         for (i = 0; i <= maxid; i++) {
1237                 if ((cpumask & (1ul << i)) == 0)
1238                         continue;
1239                 for (state = 0; state < CPUSTATES; ++state) {
1240                         tmp = cur_cp_times[i * CPUSTATES + state];
1241                         cur_cp_times[i * CPUSTATES + state] -= last_cp_times[i *
1242                             CPUSTATES + state];
1243                         last_cp_times[i * CPUSTATES + state] = tmp;
1244                 }
1245         }
1246
1247         over = 0;
1248         xo_open_list("cpu");
1249         for (i = 0; i <= maxid; i++) {
1250                 if ((cpumask & (1ul << i)) == 0)
1251                         continue;
1252                 xo_open_instance("cpu");
1253                 xo_emit("{ke:name/%d}", i);
1254                 total = 0;
1255                 for (state = 0; state < CPUSTATES; ++state)
1256                         total += cur_cp_times[i * CPUSTATES + state];
1257                 if (total)
1258                         lpct = 100.0 / total;
1259                 else
1260                         lpct = 0.0;
1261                 percent("user", (cur_cp_times[i * CPUSTATES + CP_USER] +
1262                     cur_cp_times[i * CPUSTATES + CP_NICE]) * lpct, &over);
1263                 percent("system", (cur_cp_times[i * CPUSTATES + CP_SYS] +
1264                     cur_cp_times[i * CPUSTATES + CP_INTR]) * lpct, &over);
1265                 percent("idle", cur_cp_times[i * CPUSTATES + CP_IDLE] * lpct,
1266                     &over);
1267                 xo_close_instance("cpu");
1268         }
1269         xo_close_list("cpu");
1270 }
1271
1272 static unsigned int
1273 read_intrcnts(unsigned long **intrcnts)
1274 {
1275         size_t intrcntlen;
1276
1277         if (kd != NULL) {
1278                 kread(X_SINTRCNT, &intrcntlen, sizeof(intrcntlen));
1279                 if ((*intrcnts = malloc(intrcntlen)) == NULL)
1280                         err(1, "malloc()");
1281                 kread(X_INTRCNT, *intrcnts, intrcntlen);
1282         } else {
1283                 for (*intrcnts = NULL, intrcntlen = 1024; ; intrcntlen *= 2) {
1284                         *intrcnts = reallocf(*intrcnts, intrcntlen);
1285                         if (*intrcnts == NULL)
1286                                 err(1, "reallocf()");
1287                         if (mysysctl("hw.intrcnt", *intrcnts, &intrcntlen) == 0)
1288                                 break;
1289                 }
1290         }
1291
1292         return (intrcntlen / sizeof(unsigned long));
1293 }
1294
1295 static void
1296 print_intrcnts(unsigned long *intrcnts, unsigned long *old_intrcnts,
1297     char *intrnames, unsigned int nintr, size_t istrnamlen, long long period_ms)
1298 {
1299         unsigned long *intrcnt, *old_intrcnt;
1300         char *intrname;
1301         uint64_t inttotal, old_inttotal, total_count, total_rate;
1302         unsigned long count, rate;
1303         unsigned int i;
1304
1305         inttotal = 0;
1306         old_inttotal = 0;
1307         intrname = intrnames;
1308         xo_open_list("interrupt");
1309         for (i = 0, intrcnt=intrcnts, old_intrcnt=old_intrcnts; i < nintr; i++) {
1310                 if (intrname[0] != '\0' && (*intrcnt != 0 || aflag)) {
1311                         count = *intrcnt - *old_intrcnt;
1312                         rate = ((uint64_t)count * 1000 + period_ms / 2) / period_ms;
1313                         xo_open_instance("interrupt");
1314                         xo_emit("{d:name/%-*s}{ket:name/%s} "
1315                             "{:total/%20lu} {:rate/%10lu}\n",
1316                             (int)istrnamlen, intrname, intrname, count, rate);
1317                         xo_close_instance("interrupt");
1318                 }
1319                 intrname += strlen(intrname) + 1;
1320                 inttotal += *intrcnt++;
1321                 old_inttotal += *old_intrcnt++;
1322         }
1323         total_count = inttotal - old_inttotal;
1324         total_rate = (total_count * 1000 + period_ms / 2) / period_ms;
1325         xo_close_list("interrupt");
1326         xo_emit("{L:/%-*s} {:total-interrupts/%20ju} "
1327             "{:total-rate/%10ju}\n", (int)istrnamlen,
1328             "Total", (uintmax_t)total_count, (uintmax_t)total_rate);
1329 }
1330
1331 static void
1332 dointr(unsigned int interval, int reps)
1333 {
1334         unsigned long *intrcnts, *old_intrcnts;
1335         char *intrname, *intrnames;
1336         long long period_ms, old_uptime, uptime;
1337         size_t clen, inamlen, istrnamlen;
1338         unsigned int nintr;
1339
1340         old_intrcnts = NULL;
1341         uptime = getuptime();
1342
1343         /* Get the names of each interrupt source */
1344         if (kd != NULL) {
1345                 kread(X_SINTRNAMES, &inamlen, sizeof(inamlen));
1346                 if ((intrnames = malloc(inamlen)) == NULL)
1347                         xo_err(1, "malloc()");
1348                 kread(X_INTRNAMES, intrnames, inamlen);
1349         } else {
1350                 for (intrnames = NULL, inamlen = 1024; ; inamlen *= 2) {
1351                         if ((intrnames = reallocf(intrnames, inamlen)) == NULL)
1352                                 xo_err(1, "reallocf()");
1353                         if (mysysctl("hw.intrnames", intrnames, &inamlen) == 0)
1354                                 break;
1355                 }
1356         }
1357
1358         /* Determine the length of the longest interrupt name */
1359         intrname = intrnames;
1360         istrnamlen = strlen("interrupt");
1361         while(*intrname != '\0') {
1362                 clen = strlen(intrname);
1363                 if (clen > istrnamlen)
1364                         istrnamlen = clen;
1365                 intrname += strlen(intrname) + 1;
1366         }
1367         xo_emit("{T:/%-*s} {T:/%20s} {T:/%10s}\n",
1368             (int)istrnamlen, "interrupt", "total", "rate");
1369
1370         /*
1371          * Loop reps times printing differential interrupt counts.  If reps is
1372          * zero, then run just once, printing total counts
1373          */
1374         xo_open_container("interrupt-statistics");
1375
1376         period_ms = uptime / 1000000;
1377         while(1) {
1378                 nintr = read_intrcnts(&intrcnts);
1379                 /*
1380                  * Initialize old_intrcnts to 0 for the first pass, so
1381                  * print_intrcnts will print total interrupts since boot
1382                  */
1383                 if (old_intrcnts == NULL) {
1384                         old_intrcnts = calloc(nintr, sizeof(unsigned long));
1385                         if (old_intrcnts == NULL)
1386                                 xo_err(1, "calloc()");
1387                 }
1388
1389                 print_intrcnts(intrcnts, old_intrcnts, intrnames, nintr,
1390                     istrnamlen, period_ms);
1391                 xo_flush();
1392
1393                 free(old_intrcnts);
1394                 old_intrcnts = intrcnts;
1395                 if (reps >= 0 && --reps <= 0)
1396                         break;
1397                 usleep(interval * 1000);
1398                 old_uptime = uptime;
1399                 uptime = getuptime();
1400                 period_ms = (uptime - old_uptime) / 1000000;
1401         }
1402
1403         xo_close_container("interrupt-statistics");
1404 }
1405
1406 static void
1407 domemstat_malloc(void)
1408 {
1409         struct memory_type_list *mtlp;
1410         struct memory_type *mtp;
1411         int error, first, i;
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:/%7s} {T:/%8s}  {T:Size(s)}\n",
1437             "Type", "InUse", "MemUse", "HighUse", "Requests");
1438         xo_open_list("memory");
1439         for (mtp = memstat_mtl_first(mtlp); mtp != NULL;
1440             mtp = memstat_mtl_next(mtp)) {
1441                 if (memstat_get_numallocs(mtp) == 0 &&
1442                     memstat_get_count(mtp) == 0)
1443                         continue;
1444                 xo_open_instance("memory");
1445                 xo_emit("{k:type/%13s/%s} {:in-use/%5ju} "
1446                     "{:memory-use/%5ju}{U:K} {:high-use/%7s} "
1447                     "{: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 < 32; i++) {
1454                         if (memstat_get_sizemask(mtp) & (1 << i)) {
1455                                 if (!first)
1456                                         xo_emit(",");
1457                                 xo_emit("{l:size/%d}", 1 << (i + 4));
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} "
1502             "{T:/%4s} {T:/%4s}\n\n", "ITEM", "SIZE",
1503             "LIMIT", "USED", "FREE", "REQ", "FAIL", "SLEEP");
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}\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                 xo_close_instance("zone");
1523         }
1524         memstat_mtl_free(mtlp);
1525         xo_close_list("zone");
1526         xo_close_container("memory-zone-statistics");
1527         xo_emit("\n");
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 __dead2
1691 usage(void)
1692 {
1693         xo_error("%s%s",
1694             "usage: vmstat [-afHhimoPsz] [-M core [-N system]] [-c count] [-n devs]\n",
1695             "              [-p type,if,pass] [-w wait] [disks] [wait [count]]\n");
1696         xo_finish();
1697         exit(1);
1698 }