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, len, reps, todo;
 222         unsigned int interval;
 223         char errbuf[_POSIX2_LINE_MAX];
 224
 225         memf = nlistf = NULL;
 226         interval = reps = todo = 0;
 227         maxshowdevs = 2;
 228         hflag = isatty(1);
 229
 230         argc = xo_parse_args(argc, argv);
 231         if (argc < 0)
 232                 return (argc);
 233
 234         while ((c = getopt(argc, argv, "ac:fhHiM:mN:n:oPp:stw:z")) != -1) {
 235                 switch (c) {
 236                 case 'a':
 237                         aflag++;
 238                         break;
 239                 case 'c':
 240                         reps = atoi(optarg);
 241                         break;
 242                 case 'P':
 243                         Pflag++;
 244                         break;
 245                 case 'f':
 246                         todo |= FORKSTAT;
 247                         break;
 248                 case 'h':
 249                         hflag = 1;
 250                         break;
 251                 case 'H':
 252                         hflag = 0;
 253                         break;
 254                 case 'i':
 255                         todo |= INTRSTAT;
 256                         break;
 257                 case 'M':
 258                         memf = optarg;
 259                         break;
 260                 case 'm':
 261                         todo |= MEMSTAT;
 262                         break;
 263                 case 'N':
 264                         nlistf = optarg;
 265                         break;
 266                 case 'n':
 267                         nflag = 1;
 268                         maxshowdevs = atoi(optarg);
 269                         if (maxshowdevs < 0)
 270                                 xo_errx(1, "number of devices %d is < 0",
 271                                     maxshowdevs);
 272                         break;
 273                 case 'o':
 274                         todo |= OBJSTAT;
 275                         break;
 276                 case 'p':
 277                         if (devstat_buildmatch(optarg, &matches, &num_matches)
 278                             != 0)
 279                                 xo_errx(1, "%s", devstat_errbuf);
 280                         break;
 281                 case 's':
 282                         todo |= SUMSTAT;
 283                         break;
 284                 case 't':
 285 #ifdef notyet
 286                         todo |= TIMESTAT;
 287 #else
 288                         xo_errx(EX_USAGE,
 289                             "sorry, -t is not (re)implemented yet");
 290 #endif
 291                         break;
 292                 case 'w':
 293                         /* Convert to milliseconds. */
 294                         f = atof(optarg);
 295                         interval = f * 1000;
 296                         break;
 297                 case 'z':
 298                         todo |= ZMEMSTAT;
 299                         break;
 300                 case '?':
 301                 default:
 302                         usage();
 303                 }
 304         }
 305         argc -= optind;
 306         argv += optind;
 307
 308         xo_set_version(VMSTAT_XO_VERSION);
 309         if (todo == 0)
 310                 todo = VMSTAT;
 311
 312         if (memf != NULL) {
 313                 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
 314                 if (kd == NULL)
 315                         xo_errx(1, "kvm_openfiles: %s", errbuf);
 316         }
 317
 318 retry_nlist:
 319         if (kd != NULL && (c = kvm_nlist(kd, namelist)) != 0) {
 320                 if (c > 0) {
 321                         bufsize = 0, len = 0;
 322
 323                         /*
 324                          * 'cnt' was renamed to 'vm_cnt'.  If 'vm_cnt' is not
 325                          * found try looking up older 'cnt' symbol.
 326                          * */
 327                         if (namelist[X_SUM].n_type == 0 &&
 328                             strcmp(namelist[X_SUM].n_name, "_vm_cnt") == 0) {
 329                                 namelist[X_SUM].n_name = "_cnt";
 330                                 goto retry_nlist;
 331                         }
 332
 333                         for (c = 0; c < (int)(nitems(namelist)); c++)
 334                                 if (namelist[c].n_type == 0)
 335                                         bufsize += strlen(namelist[c].n_name)
 336                                             + 1;
 337                         bufsize += len + 1;
 338                         buf = bp = alloca(bufsize);
 339
 340                         for (c = 0; c < (int)(nitems(namelist)); c++)
 341                                 if (namelist[c].n_type == 0) {
 342                                         xo_error(" %s",
 343                                             namelist[c].n_name);
 344                                         len = strlen(namelist[c].n_name);
 345                                         *bp++ = ' ';
 346                                         memcpy(bp, namelist[c].n_name, len);
 347                                         bp += len;
 348                                 }
 349                         *bp = '\0';
 350                         xo_error("undefined symbols:\n", buf);
 351                 } else
 352                         xo_warnx("kvm_nlist: %s", kvm_geterr(kd));
 353                 xo_finish();
 354                 exit(1);
 355         }
 356         if (kd && Pflag)
 357                 xo_errx(1, "Cannot use -P with crash dumps");
 358
 359         if (todo & VMSTAT) {
 360                 /*
 361                  * Make sure that the userland devstat version matches the
 362                  * kernel devstat version.  If not, exit and print a
 363                  * message informing the user of his mistake.
 364                  */
 365                 if (devstat_checkversion(NULL) < 0)
 366                         xo_errx(1, "%s", devstat_errbuf);
 367
 368
 369                 argv = getdrivedata(argv);
 370         }
 371
 372         if (*argv) {
 373                 f = atof(*argv);
 374                 interval = f * 1000;
 375                 if (*++argv)
 376                         reps = atoi(*argv);
 377         }
 378
 379         if (interval) {
 380                 if (!reps)
 381                         reps = -1;
 382         } else if (reps)
 383                 interval = 1 * 1000;
 384
 385         if (todo & FORKSTAT)
 386                 doforkst();
 387         if (todo & MEMSTAT)
 388                 domemstat_malloc();
 389         if (todo & ZMEMSTAT)
 390                 domemstat_zone();
 391         if (todo & SUMSTAT)
 392                 dosum();
 393         if (todo & OBJSTAT)
 394                 doobjstat();
 395 #ifdef notyet
 396         if (todo & TIMESTAT)
 397                 dotimes();
 398 #endif
 399         if (todo & INTRSTAT)
 400                 dointr(interval, reps);
 401         if (todo & VMSTAT)
 402                 dovmstat(interval, reps);
 403         xo_finish();
 404         exit(0);
 405 }
 406
 407 static int
 408 mysysctl(const char *name, void *oldp, size_t *oldlenp)
 409 {
 410         int error;
 411
 412         error = sysctlbyname(name, oldp, oldlenp, NULL, 0);
 413         if (error != 0 && errno != ENOMEM)
 414                 xo_err(1, "sysctl(%s)", name);
 415         return (error);
 416 }
 417
 418 static char **
 419 getdrivedata(char **argv)
 420 {
 421
 422         if ((num_devices = devstat_getnumdevs(NULL)) < 0)
 423                 xo_errx(1, "%s", devstat_errbuf);
 424
 425         cur.dinfo = (struct devinfo *)calloc(1, sizeof(struct devinfo));
 426         last.dinfo = (struct devinfo *)calloc(1, sizeof(struct devinfo));
 427
 428         if (devstat_getdevs(NULL, &cur) == -1)
 429                 xo_errx(1, "%s", devstat_errbuf);
 430
 431         num_devices = cur.dinfo->numdevs;
 432         generation = cur.dinfo->generation;
 433
 434         specified_devices = malloc(sizeof(char *));
 435         for (num_devices_specified = 0; *argv; ++argv) {
 436                 if (isdigit(**argv))
 437                         break;
 438                 num_devices_specified++;
 439                 specified_devices = realloc(specified_devices,
 440                     sizeof(char *) * num_devices_specified);
 441                 specified_devices[num_devices_specified - 1] = *argv;
 442         }
 443         dev_select = NULL;
 444
 445         if (nflag == 0 && maxshowdevs < num_devices_specified)
 446                 maxshowdevs = num_devices_specified;
 447
 448         /*
 449          * People are generally only interested in disk statistics when
 450          * they're running vmstat.  So, that's what we're going to give
 451          * them if they don't specify anything by default.  We'll also give
 452          * them any other random devices in the system so that we get to
 453          * maxshowdevs devices, if that many devices exist.  If the user
 454          * specifies devices on the command line, either through a pattern
 455          * match or by naming them explicitly, we will give the user only
 456          * those devices.
 457          */
 458         if ((num_devices_specified == 0) && (num_matches == 0)) {
 459                 if (devstat_buildmatch(da, &matches, &num_matches) != 0)
 460                         xo_errx(1, "%s", devstat_errbuf);
 461                 select_mode = DS_SELECT_ADD;
 462         } else
 463                 select_mode = DS_SELECT_ONLY;
 464
 465         /*
 466          * At this point, selectdevs will almost surely indicate that the
 467          * device list has changed, so we don't look for return values of 0
 468          * or 1.  If we get back -1, though, there is an error.
 469          */
 470         if (devstat_selectdevs(&dev_select, &num_selected, &num_selections,
 471             &select_generation, generation, cur.dinfo->devices,
 472             num_devices, matches, num_matches, specified_devices,
 473             num_devices_specified, select_mode,
 474             maxshowdevs, 0) == -1)
 475                 xo_errx(1, "%s", devstat_errbuf);
 476
 477         return(argv);
 478 }
 479
 480 /* Return system uptime in nanoseconds */
 481 static long long
 482 getuptime(void)
 483 {
 484         struct timespec sp;
 485
 486         (void)clock_gettime(CLOCK_UPTIME, &sp);
 487         return((long long)sp.tv_sec * 1000000000LL + sp.tv_nsec);
 488 }
 489
 490 static void
 491 fill_vmmeter(struct __vmmeter *vmmp)
 492 {
 493         struct vmmeter vm_cnt;
 494         size_t size;
 495
 496         if (kd != NULL) {
 497                 kread(X_SUM, &vm_cnt, sizeof(vm_cnt));
 498 #define GET_COUNTER(name) \
 499                 vmmp->name = kvm_counter_u64_fetch(kd, (u_long)vm_cnt.name)
 500                 GET_COUNTER(v_swtch);
 501                 GET_COUNTER(v_trap);
 502                 GET_COUNTER(v_syscall);
 503                 GET_COUNTER(v_intr);
 504                 GET_COUNTER(v_soft);
 505                 GET_COUNTER(v_vm_faults);
 506                 GET_COUNTER(v_io_faults);
 507                 GET_COUNTER(v_cow_faults);
 508                 GET_COUNTER(v_cow_optim);
 509                 GET_COUNTER(v_zfod);
 510                 GET_COUNTER(v_ozfod);
 511                 GET_COUNTER(v_swapin);
 512                 GET_COUNTER(v_swapout);
 513                 GET_COUNTER(v_swappgsin);
 514                 GET_COUNTER(v_swappgsout);
 515                 GET_COUNTER(v_vnodein);
 516                 GET_COUNTER(v_vnodeout);
 517                 GET_COUNTER(v_vnodepgsin);
 518                 GET_COUNTER(v_vnodepgsout);
 519                 GET_COUNTER(v_intrans);
 520                 GET_COUNTER(v_tfree);
 521                 GET_COUNTER(v_forks);
 522                 GET_COUNTER(v_vforks);
 523                 GET_COUNTER(v_rforks);
 524                 GET_COUNTER(v_kthreads);
 525                 GET_COUNTER(v_forkpages);
 526                 GET_COUNTER(v_vforkpages);
 527                 GET_COUNTER(v_rforkpages);
 528                 GET_COUNTER(v_kthreadpages);
 529 #undef GET_COUNTER
 530         } else {
 531 #define GET_VM_STATS(cat, name) do {                                    \
 532         size = sizeof(vmmp->name);                                      \
 533         mysysctl("vm.stats." #cat "." #name, &vmmp->name, &size);       \
 534 } while (0)
 535                 /* sys */
 536                 GET_VM_STATS(sys, v_swtch);
 537                 GET_VM_STATS(sys, v_trap);
 538                 GET_VM_STATS(sys, v_syscall);
 539                 GET_VM_STATS(sys, v_intr);
 540                 GET_VM_STATS(sys, v_soft);
 541
 542                 /* vm */
 543                 GET_VM_STATS(vm, v_vm_faults);
 544                 GET_VM_STATS(vm, v_io_faults);
 545                 GET_VM_STATS(vm, v_cow_faults);
 546                 GET_VM_STATS(vm, v_cow_optim);
 547                 GET_VM_STATS(vm, v_zfod);
 548                 GET_VM_STATS(vm, v_ozfod);
 549                 GET_VM_STATS(vm, v_swapin);
 550                 GET_VM_STATS(vm, v_swapout);
 551                 GET_VM_STATS(vm, v_swappgsin);
 552                 GET_VM_STATS(vm, v_swappgsout);
 553                 GET_VM_STATS(vm, v_vnodein);
 554                 GET_VM_STATS(vm, v_vnodeout);
 555                 GET_VM_STATS(vm, v_vnodepgsin);
 556                 GET_VM_STATS(vm, v_vnodepgsout);
 557                 GET_VM_STATS(vm, v_intrans);
 558                 GET_VM_STATS(vm, v_reactivated);
 559                 GET_VM_STATS(vm, v_pdwakeups);
 560                 GET_VM_STATS(vm, v_pdpages);
 561                 GET_VM_STATS(vm, v_pdshortfalls);
 562                 GET_VM_STATS(vm, v_dfree);
 563                 GET_VM_STATS(vm, v_pfree);
 564                 GET_VM_STATS(vm, v_tfree);
 565                 GET_VM_STATS(vm, v_page_size);
 566                 GET_VM_STATS(vm, v_page_count);
 567                 GET_VM_STATS(vm, v_free_reserved);
 568                 GET_VM_STATS(vm, v_free_target);
 569                 GET_VM_STATS(vm, v_free_min);
 570                 GET_VM_STATS(vm, v_free_count);
 571                 GET_VM_STATS(vm, v_wire_count);
 572                 GET_VM_STATS(vm, v_active_count);
 573                 GET_VM_STATS(vm, v_inactive_target);
 574                 GET_VM_STATS(vm, v_inactive_count);
 575                 GET_VM_STATS(vm, v_laundry_count);
 576                 GET_VM_STATS(vm, v_pageout_free_min);
 577                 GET_VM_STATS(vm, v_interrupt_free_min);
 578                 /*GET_VM_STATS(vm, v_free_severe);*/
 579                 GET_VM_STATS(vm, v_forks);
 580                 GET_VM_STATS(vm, v_vforks);
 581                 GET_VM_STATS(vm, v_rforks);
 582                 GET_VM_STATS(vm, v_kthreads);
 583                 GET_VM_STATS(vm, v_forkpages);
 584                 GET_VM_STATS(vm, v_vforkpages);
 585                 GET_VM_STATS(vm, v_rforkpages);
 586                 GET_VM_STATS(vm, v_kthreadpages);
 587 #undef GET_VM_STATS
 588         }
 589 }
 590
 591 static void
 592 fill_vmtotal(struct vmtotal *vmtp)
 593 {
 594         size_t size;
 595
 596         if (kd != NULL) {
 597                 /* XXX fill vmtp */
 598                 xo_errx(1, "not implemented");
 599         } else {
 600                 size = sizeof(*vmtp);
 601                 mysysctl("vm.vmtotal", vmtp, &size);
 602                 if (size != sizeof(*vmtp))
 603                         xo_errx(1, "vm.total size mismatch");
 604         }
 605 }
 606
 607 /* Determine how many cpu columns, and what index they are in kern.cp_times */
 608 static int
 609 getcpuinfo(u_long *maskp, int *maxidp)
 610 {
 611         long *times;
 612         u_long mask;
 613         size_t size;
 614         int empty, i, j, maxcpu, maxid, ncpus;
 615
 616         if (kd != NULL)
 617                 xo_errx(1, "not implemented");
 618         mask = 0;
 619         ncpus = 0;
 620         size = sizeof(maxcpu);
 621         mysysctl("kern.smp.maxcpus", &maxcpu, &size);
 622         if (size != sizeof(maxcpu))
 623                 xo_errx(1, "sysctl kern.smp.maxcpus");
 624         size = sizeof(long) * maxcpu * CPUSTATES;
 625         times = malloc(size);
 626         if (times == NULL)
 627                 xo_err(1, "malloc %zd bytes", size);
 628         mysysctl("kern.cp_times", times, &size);
 629         maxid = (size / CPUSTATES / sizeof(long)) - 1;
 630         for (i = 0; i <= maxid; i++) {
 631                 empty = 1;
 632                 for (j = 0; empty && j < CPUSTATES; j++) {
 633                         if (times[i * CPUSTATES + j] != 0)
 634                                 empty = 0;
 635                 }
 636                 if (!empty) {
 637                         mask |= (1ul << i);
 638                         ncpus++;
 639                 }
 640         }
 641         if (maskp)
 642                 *maskp = mask;
 643         if (maxidp)
 644                 *maxidp = maxid;
 645         return (ncpus);
 646 }
 647
 648
 649 static void
 650 prthuman(const char *name, uint64_t val, int size)
 651 {
 652         int flags;
 653         char buf[10];
 654         char fmt[128];
 655
 656         snprintf(fmt, sizeof(fmt), "{:%s/%%*s}", name);
 657
 658         if (size < 5 || size > 9)
 659                 xo_errx(1, "doofus");
 660         flags = HN_B | HN_NOSPACE | HN_DECIMAL;
 661         humanize_number(buf, size, val, "", HN_AUTOSCALE, flags);
 662         xo_attr("value", "%ju", (uintmax_t) val);
 663         xo_emit(fmt, size, buf);
 664 }
 665
 666 static void
 667 dovmstat(unsigned int interval, int reps)
 668 {
 669         struct clockinfo clockrate;
 670         struct vmtotal total;
 671         struct devinfo *tmp_dinfo;
 672         u_long cpumask;
 673         size_t size;
 674         time_t uptime, halfuptime;
 675         int ncpus, maxid, rate_adj, retval;
 676
 677         uptime = getuptime() / 1000000000LL;
 678         halfuptime = uptime / 2;
 679         rate_adj = 1;
 680         ncpus = 1;
 681         maxid = 0;
 682         cpumask = 0;
 683
 684         /*
 685          * If the user stops the program (control-Z) and then resumes it,
 686          * print out the header again.
 687          */
 688         (void)signal(SIGCONT, needhdr);
 689
 690         /*
 691          * If our standard output is a tty, then install a SIGWINCH handler
 692          * and set wresized so that our first iteration through the main
 693          * vmstat loop will peek at the terminal's current rows to find out
 694          * how many lines can fit in a screenful of output.
 695          */
 696         if (isatty(fileno(stdout)) != 0) {
 697                 wresized = 1;
 698                 (void)signal(SIGWINCH, needresize);
 699         } else {
 700                 wresized = 0;
 701                 winlines = VMSTAT_DEFAULT_LINES;
 702         }
 703
 704         if (kd != NULL) {
 705                 if (namelist[X_STATHZ].n_type != 0 &&
 706                     namelist[X_STATHZ].n_value != 0)
 707                         kread(X_STATHZ, &hz, sizeof(hz));
 708                 if (!hz)
 709                         kread(X_HZ, &hz, sizeof(hz));
 710         } else {
 711                 size = sizeof(clockrate);
 712                 mysysctl("kern.clockrate", &clockrate, &size);
 713                 if (size != sizeof(clockrate))
 714                         xo_errx(1, "clockrate size mismatch");
 715                 hz = clockrate.hz;
 716         }
 717
 718         if (Pflag) {
 719                 ncpus = getcpuinfo(&cpumask, &maxid);
 720                 size_cp_times = sizeof(long) * (maxid + 1) * CPUSTATES;
 721                 cur_cp_times = calloc(1, size_cp_times);
 722                 last_cp_times = calloc(1, size_cp_times);
 723         }
 724         for (hdrcnt = 1;;) {
 725                 if (!--hdrcnt)
 726                         printhdr(maxid, cpumask);
 727                 if (kd != NULL) {
 728                         if (kvm_getcptime(kd, cur.cp_time) < 0)
 729                                 xo_errx(1, "kvm_getcptime: %s", kvm_geterr(kd));
 730                 } else {
 731                         size = sizeof(cur.cp_time);
 732                         mysysctl("kern.cp_time", &cur.cp_time, &size);
 733                         if (size != sizeof(cur.cp_time))
 734                                 xo_errx(1, "cp_time size mismatch");
 735                 }
 736                 if (Pflag) {
 737                         size = size_cp_times;
 738                         mysysctl("kern.cp_times", cur_cp_times, &size);
 739                         if (size != size_cp_times)
 740                                 xo_errx(1, "cp_times mismatch");
 741                 }
 742
 743                 tmp_dinfo = last.dinfo;
 744                 last.dinfo = cur.dinfo;
 745                 cur.dinfo = tmp_dinfo;
 746                 last.snap_time = cur.snap_time;
 747
 748                 /*
 749                  * Here what we want to do is refresh our device stats.
 750                  * getdevs() returns 1 when the device list has changed.
 751                  * If the device list has changed, we want to go through
 752                  * the selection process again, in case a device that we
 753                  * were previously displaying has gone away.
 754                  */
 755                 switch (devstat_getdevs(NULL, &cur)) {
 756                 case -1:
 757                         xo_errx(1, "%s", devstat_errbuf);
 758                         break;
 759                 case 1:
 760                         num_devices = cur.dinfo->numdevs;
 761                         generation = cur.dinfo->generation;
 762
 763                         retval = devstat_selectdevs(&dev_select, &num_selected,
 764                             &num_selections, &select_generation,
 765                             generation, cur.dinfo->devices,
 766                             num_devices, matches, num_matches,
 767                             specified_devices,
 768                             num_devices_specified, select_mode,
 769                             maxshowdevs, 0);
 770                         switch (retval) {
 771                         case -1:
 772                                 xo_errx(1, "%s", devstat_errbuf);
 773                                 break;
 774                         case 1:
 775                                 printhdr(maxid, cpumask);
 776                                 break;
 777                         default:
 778                                 break;
 779                         }
 780                         break;
 781                 default:
 782                         break;
 783                 }
 784
 785                 fill_vmmeter(&sum);
 786                 fill_vmtotal(&total);
 787                 xo_open_container("processes");
 788                 xo_emit("{:runnable/%1d} {:waiting/%ld} "
 789                     "{:swapped-out/%ld}", total.t_rq - 1, total.t_dw +
 790                     total.t_pw, total.t_sw);
 791                 xo_close_container("processes");
 792                 xo_open_container("memory");
 793 #define vmstat_pgtok(a) ((uintmax_t)(a) * (sum.v_page_size >> 10))
 794 #define rate(x) (((x) * rate_adj + halfuptime) / uptime)        /* round */
 795                 if (hflag) {
 796                         xo_emit("");
 797                         prthuman("available-memory",
 798                             total.t_avm * (uint64_t)sum.v_page_size, 5);
 799                         xo_emit(" ");
 800                         prthuman("free-memory",
 801                             total.t_free * (uint64_t)sum.v_page_size, 5);
 802                         xo_emit(" ");
 803                 } else {
 804                         xo_emit(" ");
 805                         xo_emit("{:available-memory/%7ju}",
 806                             vmstat_pgtok(total.t_avm));
 807                         xo_emit(" ");
 808                         xo_emit("{:free-memory/%7ju}",
 809                             vmstat_pgtok(total.t_free));
 810                         xo_emit(" ");
 811                 }
 812                 xo_emit("{:total-page-faults/%5lu} ",
 813                     (unsigned long)rate(sum.v_vm_faults -
 814                     osum.v_vm_faults));
 815                 xo_close_container("memory");
 816
 817                 xo_open_container("paging-rates");
 818                 xo_emit("{:page-reactivated/%3lu} ",
 819                     (unsigned long)rate(sum.v_reactivated -
 820                     osum.v_reactivated));
 821                 xo_emit("{:paged-in/%3lu} ",
 822                     (unsigned long)rate(sum.v_swapin + sum.v_vnodein -
 823                     (osum.v_swapin + osum.v_vnodein)));
 824                 xo_emit("{:paged-out/%3lu} ",
 825                     (unsigned long)rate(sum.v_swapout + sum.v_vnodeout -
 826                     (osum.v_swapout + osum.v_vnodeout)));
 827                 xo_emit("{:freed/%5lu} ",
 828                     (unsigned long)rate(sum.v_tfree - osum.v_tfree));
 829                 xo_emit("{:scanned/%4lu} ",
 830                     (unsigned long)rate(sum.v_pdpages - osum.v_pdpages));
 831                 xo_close_container("paging-rates");
 832
 833                 devstats();
 834                 xo_open_container("fault-rates");
 835                 xo_emit("{:interrupts/%4lu} {:system-calls/%5lu} "
 836                     "{:context-switches/%5lu}",
 837                     (unsigned long)rate(sum.v_intr - osum.v_intr),
 838                     (unsigned long)rate(sum.v_syscall - osum.v_syscall),
 839                     (unsigned long)rate(sum.v_swtch - osum.v_swtch));
 840                 xo_close_container("fault-rates");
 841                 if (Pflag)
 842                         pcpustats(cpumask, maxid);
 843                 else
 844                         cpustats();
 845                 xo_emit("\n");
 846                 xo_flush();
 847                 if (reps >= 0 && --reps <= 0)
 848                         break;
 849                 osum = sum;
 850                 uptime = interval;
 851                 rate_adj = 1000;
 852                 /*
 853                  * We round upward to avoid losing low-frequency events
 854                  * (i.e., >= 1 per interval but < 1 per millisecond).
 855                  */
 856                 if (interval != 1)
 857                         halfuptime = (uptime + 1) / 2;
 858                 else
 859                         halfuptime = 0;
 860                 (void)usleep(interval * 1000);
 861         }
 862 }
 863
 864 static void
 865 printhdr(int maxid, u_long cpumask)
 866 {
 867         int i, num_shown;
 868
 869         num_shown = MIN(num_selected, maxshowdevs);
 870         if (hflag)
 871                 xo_emit("{T:procs}  {T:memory}       {T:/page%*s}", 19, "");
 872         else
 873                 xo_emit("{T:procs}     {T:memory}        {T:/page%*s}", 19, "");
 874         if (num_shown > 1)
 875                 xo_emit(" {T:/disks %*s}", num_shown * 4 - 7, "");
 876         else if (num_shown == 1)
 877                 xo_emit("   {T:disks}");
 878         xo_emit("   {T:faults}      ");
 879         if (Pflag) {
 880                 for (i = 0; i <= maxid; i++) {
 881                         if (cpumask & (1ul << i))
 882                                 xo_emit("  {T:/cpu%d}   ", i);
 883                 }
 884                 xo_emit("\n");
 885         } else
 886                 xo_emit("   {T:cpu}\n");
 887         if (hflag) {
 888                 xo_emit("{T:r} {T:b} {T:w}  {T:avm}   {T:fre}   {T:flt}  {T:re}"
 889                     "  {T:pi}  {T:po}    {T:fr}   {T:sr} ");
 890         } else {
 891                 xo_emit("{T:r} {T:b} {T:w}     {T:avm}     {T:fre}  {T:flt}  "
 892                     "{T:re}  {T:pi}  {T:po}    {T:fr}   {T:sr} ");
 893         }
 894         for (i = 0; i < num_devices; i++)
 895                 if ((dev_select[i].selected) &&
 896                     (dev_select[i].selected <= maxshowdevs))
 897                         xo_emit("{T:/%c%c%d} ", dev_select[i].device_name[0],
 898                             dev_select[i].device_name[1],
 899                             dev_select[i].unit_number);
 900         xo_emit("  {T:in}    {T:sy}    {T:cs}");
 901         if (Pflag) {
 902                 for (i = 0; i <= maxid; i++) {
 903                         if (cpumask & (1ul << i))
 904                                 xo_emit(" {T:us} {T:sy} {T:id}");
 905                 }
 906                 xo_emit("\n");
 907         } else
 908                 xo_emit(" {T:us} {T:sy} {T:id}\n");
 909         if (wresized != 0)
 910                 doresize();
 911         hdrcnt = winlines;
 912 }
 913
 914 /*
 915  * Force a header to be prepended to the next output.
 916  */
 917 static void
 918 needhdr(int dummy __unused)
 919 {
 920
 921         hdrcnt = 1;
 922 }
 923
 924 /*
 925  * When the terminal is resized, force an update of the maximum number of rows
 926  * printed between each header repetition.  Then force a new header to be
 927  * prepended to the next output.
 928  */
 929 void
 930 needresize(int signo __unused)
 931 {
 932
 933         wresized = 1;
 934         hdrcnt = 1;
 935 }
 936
 937 /*
 938  * Update the global `winlines' count of terminal rows.
 939  */
 940 void
 941 doresize(void)
 942 {
 943         struct winsize w;
 944         int status;
 945
 946         for (;;) {
 947                 status = ioctl(fileno(stdout), TIOCGWINSZ, &w);
 948                 if (status == -1 && errno == EINTR)
 949                         continue;
 950                 else if (status == -1)
 951                         xo_err(1, "ioctl");
 952                 if (w.ws_row > 3)
 953                         winlines = w.ws_row - 3;
 954                 else
 955                         winlines = VMSTAT_DEFAULT_LINES;
 956                 break;
 957         }
 958
 959         /*
 960          * Inhibit doresize() calls until we are rescheduled by SIGWINCH.
 961          */
 962         wresized = 0;
 963 }
 964
 965 #ifdef notyet
 966 static void
 967 dotimes(void)
 968 {
 969         unsigned int pgintime, rectime;
 970
 971         kread(X_REC, &rectime, sizeof(rectime));
 972         kread(X_PGIN, &pgintime, sizeof(pgintime));
 973         kread(X_SUM, &sum, sizeof(sum));
 974         xo_emit("{:page-reclaims/%u} {N:reclaims}, "
 975             "{:reclaim-time/%u} {N:total time (usec)}\n",
 976             sum.v_pgrec, rectime);
 977         xo_emit("{L:average}: {:reclaim-average/%u} {N:usec \\/ reclaim}\n",
 978             rectime / sum.v_pgrec);
 979         xo_emit("\n");
 980         xo_emit("{:page-ins/%u} {N:page ins}, "
 981             "{:page-in-time/%u} {N:total time (msec)}\n",
 982             sum.v_pgin, pgintime / 10);
 983         xo_emit("{L:average}: {:average/%8.1f} {N:msec \\/ page in}\n",
 984             pgintime / (sum.v_pgin * 10.0));
 985 }
 986 #endif
 987
 988 static long
 989 pct(long top, long bot)
 990 {
 991         long ans;
 992
 993         if (bot == 0)
 994                 return(0);
 995         ans = (quad_t)top * 100 / bot;
 996         return (ans);
 997 }
 998
 999 #define PCT(top, bot) pct((long)(top), (long)(bot))
1000
1001 static void
1002 dosum(void)
1003 {
1004         struct nchstats lnchstats;
1005         size_t size;
1006         long nchtotal;
1007
1008         fill_vmmeter(&sum);
1009         xo_open_container("summary-statistics");
1010         xo_emit("{:context-switches/%9u} {N:cpu context switches}\n",
1011             sum.v_swtch);
1012         xo_emit("{:interrupts/%9u} {N:device interrupts}\n",
1013             sum.v_intr);
1014         xo_emit("{:software-interrupts/%9u} {N:software interrupts}\n",
1015             sum.v_soft);
1016         xo_emit("{:traps/%9u} {N:traps}\n", sum.v_trap);
1017         xo_emit("{:system-calls/%9u} {N:system calls}\n",
1018             sum.v_syscall);
1019         xo_emit("{:kernel-threads/%9u} {N:kernel threads created}\n",
1020             sum.v_kthreads);
1021         xo_emit("{:forks/%9u} {N: fork() calls}\n", sum.v_forks);
1022         xo_emit("{:vforks/%9u} {N:vfork() calls}\n",
1023             sum.v_vforks);
1024         xo_emit("{:rforks/%9u} {N:rfork() calls}\n",
1025             sum.v_rforks);
1026         xo_emit("{:swap-ins/%9u} {N:swap pager pageins}\n",
1027             sum.v_swapin);
1028         xo_emit("{:swap-in-pages/%9u} {N:swap pager pages paged in}\n",
1029             sum.v_swappgsin);
1030         xo_emit("{:swap-outs/%9u} {N:swap pager pageouts}\n",
1031             sum.v_swapout);
1032         xo_emit("{:swap-out-pages/%9u} {N:swap pager pages paged out}\n",
1033             sum.v_swappgsout);
1034         xo_emit("{:vnode-page-ins/%9u} {N:vnode pager pageins}\n",
1035             sum.v_vnodein);
1036         xo_emit("{:vnode-page-in-pages/%9u} {N:vnode pager pages paged in}\n",
1037             sum.v_vnodepgsin);
1038         xo_emit("{:vnode-page-outs/%9u} {N:vnode pager pageouts}\n",
1039             sum.v_vnodeout);
1040         xo_emit("{:vnode-page-out-pages/%9u} {N:vnode pager pages paged out}\n",
1041             sum.v_vnodepgsout);
1042         xo_emit("{:page-daemon-wakeups/%9u} {N:page daemon wakeups}\n",
1043             sum.v_pdwakeups);
1044         xo_emit("{:page-daemon-pages/%9u} {N:pages examined by the page "
1045             "daemon}\n", sum.v_pdpages);
1046         xo_emit("{:page-reclamation-shortfalls/%9u} {N:clean page reclamation "
1047             "shortfalls}\n", sum.v_pdshortfalls);
1048         xo_emit("{:reactivated/%9u} {N:pages reactivated by the page daemon}\n",
1049             sum.v_reactivated);
1050         xo_emit("{:copy-on-write-faults/%9u} {N:copy-on-write faults}\n",
1051             sum.v_cow_faults);
1052         xo_emit("{:copy-on-write-optimized-faults/%9u} {N:copy-on-write "
1053             "optimized faults}\n", sum.v_cow_optim);
1054         xo_emit("{:zero-fill-pages/%9u} {N:zero fill pages zeroed}\n",
1055             sum.v_zfod);
1056         xo_emit("{:zero-fill-prezeroed/%9u} {N:zero fill pages prezeroed}\n",
1057             sum.v_ozfod);
1058         xo_emit("{:intransit-blocking/%9u} {N:intransit blocking page faults}\n",
1059             sum.v_intrans);
1060         xo_emit("{:total-faults/%9u} {N:total VM faults taken}\n",
1061             sum.v_vm_faults);
1062         xo_emit("{:faults-requiring-io/%9u} {N:page faults requiring I\\/O}\n",
1063             sum.v_io_faults);
1064         xo_emit("{:faults-from-thread-creation/%9u} {N:pages affected by "
1065             "kernel thread creation}\n", sum.v_kthreadpages);
1066         xo_emit("{:faults-from-fork/%9u} {N:pages affected by  fork}()\n",
1067             sum.v_forkpages);
1068         xo_emit("{:faults-from-vfork/%9u} {N:pages affected by vfork}()\n",
1069             sum.v_vforkpages);
1070         xo_emit("{:pages-rfork/%9u} {N:pages affected by rfork}()\n",
1071             sum.v_rforkpages);
1072         xo_emit("{:pages-freed/%9u} {N:pages freed}\n",
1073             sum.v_tfree);
1074         xo_emit("{:pages-freed-by-daemon/%9u} {N:pages freed by daemon}\n",
1075             sum.v_dfree);
1076         xo_emit("{:pages-freed-on-exit/%9u} {N:pages freed by exiting processes}\n",
1077             sum.v_pfree);
1078         xo_emit("{:active-pages/%9u} {N:pages active}\n",
1079             sum.v_active_count);
1080         xo_emit("{:inactive-pages/%9u} {N:pages inactive}\n",
1081             sum.v_inactive_count);
1082         xo_emit("{:laundry-pages/%9u} {N:pages in the laundry queue}\n",
1083             sum.v_laundry_count);
1084         xo_emit("{:wired-pages/%9u} {N:pages wired down}\n",
1085             sum.v_wire_count);
1086         xo_emit("{:free-pages/%9u} {N:pages free}\n",
1087             sum.v_free_count);
1088         xo_emit("{:bytes-per-page/%9u} {N:bytes per page}\n", sum.v_page_size);
1089         if (kd != NULL) {
1090                 kread(X_NCHSTATS, &lnchstats, sizeof(lnchstats));
1091         } else {
1092                 size = sizeof(lnchstats);
1093                 mysysctl("vfs.cache.nchstats", &lnchstats, &size);
1094                 if (size != sizeof(lnchstats))
1095                         xo_errx(1, "vfs.cache.nchstats size mismatch");
1096         }
1097         nchtotal = lnchstats.ncs_goodhits + lnchstats.ncs_neghits +
1098             lnchstats.ncs_badhits + lnchstats.ncs_falsehits +
1099             lnchstats.ncs_miss + lnchstats.ncs_long;
1100         xo_emit("{:total-name-lookups/%9ld} {N:total name lookups}\n",
1101             nchtotal);
1102         xo_emit("{P:/%9s} {N:cache hits} "
1103             "({:positive-cache-hits/%ld}% pos + "
1104             "{:negative-cache-hits/%ld}% {N:neg}) "
1105             "system {:cache-hit-percent/%ld}% per-directory\n",
1106             "", PCT(lnchstats.ncs_goodhits, nchtotal),
1107             PCT(lnchstats.ncs_neghits, nchtotal),
1108             PCT(lnchstats.ncs_pass2, nchtotal));
1109         xo_emit("{P:/%9s} {L:deletions} {:deletions/%ld}%, "
1110             "{L:falsehits} {:false-hits/%ld}%, "
1111             "{L:toolong} {:too-long/%ld}%\n", "",
1112             PCT(lnchstats.ncs_badhits, nchtotal),
1113             PCT(lnchstats.ncs_falsehits, nchtotal),
1114             PCT(lnchstats.ncs_long, nchtotal));
1115         xo_close_container("summary-statistics");
1116 }
1117
1118 static void
1119 doforkst(void)
1120 {
1121
1122         fill_vmmeter(&sum);
1123         xo_open_container("fork-statistics");
1124         xo_emit("{:fork/%u} {N:forks}, {:fork-pages/%u} {N:pages}, "
1125             "{L:average} {:fork-average/%.2f}\n",
1126             sum.v_forks, sum.v_forkpages,
1127             sum.v_forks == 0 ? 0.0 :
1128             (double)sum.v_forkpages / sum.v_forks);
1129         xo_emit("{:vfork/%u} {N:vforks}, {:vfork-pages/%u} {N:pages}, "
1130             "{L:average} {:vfork-average/%.2f}\n",
1131             sum.v_vforks, sum.v_vforkpages,
1132             sum.v_vforks == 0 ? 0.0 :
1133             (double)sum.v_vforkpages / sum.v_vforks);
1134         xo_emit("{:rfork/%u} {N:rforks}, {:rfork-pages/%u} {N:pages}, "
1135             "{L:average} {:rfork-average/%.2f}\n",
1136             sum.v_rforks, sum.v_rforkpages,
1137             sum.v_rforks == 0 ? 0.0 :
1138             (double)sum.v_rforkpages / sum.v_rforks);
1139         xo_close_container("fork-statistics");
1140 }
1141
1142 static void
1143 devstats(void)
1144 {
1145         long double busy_seconds, transfers_per_second;
1146         long tmp;
1147         int di, dn, state;
1148
1149         for (state = 0; state < CPUSTATES; ++state) {
1150                 tmp = cur.cp_time[state];
1151                 cur.cp_time[state] -= last.cp_time[state];
1152                 last.cp_time[state] = tmp;
1153         }
1154
1155         busy_seconds = cur.snap_time - last.snap_time;
1156
1157         xo_open_list("device");
1158         for (dn = 0; dn < num_devices; dn++) {
1159                 if (dev_select[dn].selected == 0 ||
1160                     dev_select[dn].selected > maxshowdevs)
1161                         continue;
1162
1163                 di = dev_select[dn].position;
1164
1165                 if (devstat_compute_statistics(&cur.dinfo->devices[di],
1166                     &last.dinfo->devices[di], busy_seconds,
1167                     DSM_TRANSFERS_PER_SECOND, &transfers_per_second,
1168                     DSM_NONE) != 0)
1169                         xo_errx(1, "%s", devstat_errbuf);
1170
1171                 xo_open_instance("device");
1172                 xo_emit("{ekq:name/%c%c%d}{:transfers/%3.0Lf} ",
1173                     dev_select[dn].device_name[0],
1174                     dev_select[dn].device_name[1],
1175                     dev_select[dn].unit_number,
1176                     transfers_per_second);
1177                 xo_close_instance("device");
1178         }
1179         xo_close_list("device");
1180 }
1181
1182 static void
1183 percent(const char *name, double pctv, int *over)
1184 {
1185         int l;
1186         char buf[10];
1187         char fmt[128];
1188
1189         snprintf(fmt, sizeof(fmt), " {:%s/%%*s}", name);
1190         l = snprintf(buf, sizeof(buf), "%.0f", pctv);
1191         if (l == 1 && *over) {
1192                 xo_emit(fmt, 1, buf);
1193                 (*over)--;
1194         } else
1195                 xo_emit(fmt, 2, buf);
1196         if (l > 2)
1197                 (*over)++;
1198 }
1199
1200 static void
1201 cpustats(void)
1202 {
1203         double lpct, total;
1204         int state, over;
1205
1206         total = 0;
1207         for (state = 0; state < CPUSTATES; ++state)
1208                 total += cur.cp_time[state];
1209         if (total)
1210                 lpct = 100.0 / total;
1211         else
1212                 lpct = 0.0;
1213         over = 0;
1214         xo_open_container("cpu-statistics");
1215         percent("user", (cur.cp_time[CP_USER] + cur.cp_time[CP_NICE]) * lpct,
1216             &over);
1217         percent("system", (cur.cp_time[CP_SYS] + cur.cp_time[CP_INTR]) * lpct,
1218             &over);
1219         percent("idle", cur.cp_time[CP_IDLE] * lpct, &over);
1220         xo_close_container("cpu-statistics");
1221 }
1222
1223 static void
1224 pcpustats(u_long cpumask, int maxid)
1225 {
1226         double lpct, total;
1227         long tmp;
1228         int i, over, state;
1229
1230         /* devstats does this for cp_time */
1231         for (i = 0; i <= maxid; i++) {
1232                 if ((cpumask & (1ul << i)) == 0)
1233                         continue;
1234                 for (state = 0; state < CPUSTATES; ++state) {
1235                         tmp = cur_cp_times[i * CPUSTATES + state];
1236                         cur_cp_times[i * CPUSTATES + state] -= last_cp_times[i *
1237                             CPUSTATES + state];
1238                         last_cp_times[i * CPUSTATES + state] = tmp;
1239                 }
1240         }
1241
1242         over = 0;
1243         xo_open_list("cpu");
1244         for (i = 0; i <= maxid; i++) {
1245                 if ((cpumask & (1ul << i)) == 0)
1246                         continue;
1247                 xo_open_instance("cpu");
1248                 xo_emit("{ke:name/%d}", i);
1249                 total = 0;
1250                 for (state = 0; state < CPUSTATES; ++state)
1251                         total += cur_cp_times[i * CPUSTATES + state];
1252                 if (total)
1253                         lpct = 100.0 / total;
1254                 else
1255                         lpct = 0.0;
1256                 percent("user", (cur_cp_times[i * CPUSTATES + CP_USER] +
1257                     cur_cp_times[i * CPUSTATES + CP_NICE]) * lpct, &over);
1258                 percent("system", (cur_cp_times[i * CPUSTATES + CP_SYS] +
1259                     cur_cp_times[i * CPUSTATES + CP_INTR]) * lpct, &over);
1260                 percent("idle", cur_cp_times[i * CPUSTATES + CP_IDLE] * lpct,
1261                     &over);
1262                 xo_close_instance("cpu");
1263         }
1264         xo_close_list("cpu");
1265 }
1266
1267 static unsigned int
1268 read_intrcnts(unsigned long **intrcnts)
1269 {
1270         size_t intrcntlen;
1271
1272         if (kd != NULL) {
1273                 kread(X_SINTRCNT, &intrcntlen, sizeof(intrcntlen));
1274                 if ((*intrcnts = malloc(intrcntlen)) == NULL)
1275                         err(1, "malloc()");
1276                 kread(X_INTRCNT, *intrcnts, intrcntlen);
1277         } else {
1278                 for (*intrcnts = NULL, intrcntlen = 1024; ; intrcntlen *= 2) {
1279                         *intrcnts = reallocf(*intrcnts, intrcntlen);
1280                         if (*intrcnts == NULL)
1281                                 err(1, "reallocf()");
1282                         if (mysysctl("hw.intrcnt", *intrcnts, &intrcntlen) == 0)
1283                                 break;
1284                 }
1285         }
1286
1287         return (intrcntlen / sizeof(unsigned long));
1288 }
1289
1290 static void
1291 print_intrcnts(unsigned long *intrcnts, unsigned long *old_intrcnts,
1292     char *intrnames, unsigned int nintr, size_t istrnamlen, long long period_ms)
1293 {
1294         unsigned long *intrcnt, *old_intrcnt;
1295         char *intrname;
1296         uint64_t inttotal, old_inttotal, total_count, total_rate;
1297         unsigned long count, rate;
1298         unsigned int i;
1299
1300         inttotal = 0;
1301         old_inttotal = 0;
1302         intrname = intrnames;
1303         xo_open_list("interrupt");
1304         for (i = 0, intrcnt=intrcnts, old_intrcnt=old_intrcnts; i < nintr; i++) {
1305                 if (intrname[0] != '\0' && (*intrcnt != 0 || aflag)) {
1306                         count = *intrcnt - *old_intrcnt;
1307                         rate = ((uint64_t)count * 1000 + period_ms / 2) / period_ms;
1308                         xo_open_instance("interrupt");
1309                         xo_emit("{d:name/%-*s}{ket:name/%s} "
1310                             "{:total/%20lu} {:rate/%10lu}\n",
1311                             (int)istrnamlen, intrname, intrname, count, rate);
1312                         xo_close_instance("interrupt");
1313                 }
1314                 intrname += strlen(intrname) + 1;
1315                 inttotal += *intrcnt++;
1316                 old_inttotal += *old_intrcnt++;
1317         }
1318         total_count = inttotal - old_inttotal;
1319         total_rate = (total_count * 1000 + period_ms / 2) / period_ms;
1320         xo_close_list("interrupt");
1321         xo_emit("{L:/%-*s} {:total-interrupts/%20ju} "
1322             "{:total-rate/%10ju}\n", (int)istrnamlen,
1323             "Total", (uintmax_t)total_count, (uintmax_t)total_rate);
1324 }
1325
1326 static void
1327 dointr(unsigned int interval, int reps)
1328 {
1329         unsigned long *intrcnts, *old_intrcnts;
1330         char *intrname, *intrnames;
1331         long long period_ms, old_uptime, uptime;
1332         size_t clen, inamlen, istrnamlen;
1333         unsigned int nintr;
1334
1335         old_intrcnts = NULL;
1336         uptime = getuptime();
1337
1338         /* Get the names of each interrupt source */
1339         if (kd != NULL) {
1340                 kread(X_SINTRNAMES, &inamlen, sizeof(inamlen));
1341                 if ((intrnames = malloc(inamlen)) == NULL)
1342                         xo_err(1, "malloc()");
1343                 kread(X_INTRNAMES, intrnames, inamlen);
1344         } else {
1345                 for (intrnames = NULL, inamlen = 1024; ; inamlen *= 2) {
1346                         if ((intrnames = reallocf(intrnames, inamlen)) == NULL)
1347                                 xo_err(1, "reallocf()");
1348                         if (mysysctl("hw.intrnames", intrnames, &inamlen) == 0)
1349                                 break;
1350                 }
1351         }
1352
1353         /* Determine the length of the longest interrupt name */
1354         intrname = intrnames;
1355         istrnamlen = strlen("interrupt");
1356         while(*intrname != '\0') {
1357                 clen = strlen(intrname);
1358                 if (clen > istrnamlen)
1359                         istrnamlen = clen;
1360                 intrname += strlen(intrname) + 1;
1361         }
1362         xo_emit("{T:/%-*s} {T:/%20s} {T:/%10s}\n",
1363             (int)istrnamlen, "interrupt", "total", "rate");
1364
1365         /*
1366          * Loop reps times printing differential interrupt counts.  If reps is
1367          * zero, then run just once, printing total counts
1368          */
1369         xo_open_container("interrupt-statistics");
1370
1371         period_ms = uptime / 1000000;
1372         while(1) {
1373                 nintr = read_intrcnts(&intrcnts);
1374                 /*
1375                  * Initialize old_intrcnts to 0 for the first pass, so
1376                  * print_intrcnts will print total interrupts since boot
1377                  */
1378                 if (old_intrcnts == NULL) {
1379                         old_intrcnts = calloc(nintr, sizeof(unsigned long));
1380                         if (old_intrcnts == NULL)
1381                                 xo_err(1, "calloc()");
1382                 }
1383
1384                 print_intrcnts(intrcnts, old_intrcnts, intrnames, nintr,
1385                     istrnamlen, period_ms);
1386                 xo_flush();
1387
1388                 free(old_intrcnts);
1389                 old_intrcnts = intrcnts;
1390                 if (reps >= 0 && --reps <= 0)
1391                         break;
1392                 usleep(interval * 1000);
1393                 old_uptime = uptime;
1394                 uptime = getuptime();
1395                 period_ms = (uptime - old_uptime) / 1000000;
1396         }
1397
1398         xo_close_container("interrupt-statistics");
1399 }
1400
1401 static void
1402 domemstat_malloc(void)
1403 {
1404         struct memory_type_list *mtlp;
1405         struct memory_type *mtp;
1406         int error, first, i;
1407
1408         mtlp = memstat_mtl_alloc();
1409         if (mtlp == NULL) {
1410                 xo_warn("memstat_mtl_alloc");
1411                 return;
1412         }
1413         if (kd == NULL) {
1414                 if (memstat_sysctl_malloc(mtlp, 0) < 0) {
1415                         xo_warnx("memstat_sysctl_malloc: %s",
1416                             memstat_strerror(memstat_mtl_geterror(mtlp)));
1417                         return;
1418                 }
1419         } else {
1420                 if (memstat_kvm_malloc(mtlp, kd) < 0) {
1421                         error = memstat_mtl_geterror(mtlp);
1422                         if (error == MEMSTAT_ERROR_KVM)
1423                                 xo_warnx("memstat_kvm_malloc: %s",
1424                                     kvm_geterr(kd));
1425                         else
1426                                 xo_warnx("memstat_kvm_malloc: %s",
1427                                     memstat_strerror(error));
1428                 }
1429         }
1430         xo_open_container("malloc-statistics");
1431         xo_emit("{T:/%13s} {T:/%5s} {T:/%6s} {T:/%7s} {T:/%8s}  {T:Size(s)}\n",
1432             "Type", "InUse", "MemUse", "HighUse", "Requests");
1433         xo_open_list("memory");
1434         for (mtp = memstat_mtl_first(mtlp); mtp != NULL;
1435             mtp = memstat_mtl_next(mtp)) {
1436                 if (memstat_get_numallocs(mtp) == 0 &&
1437                     memstat_get_count(mtp) == 0)
1438                         continue;
1439                 xo_open_instance("memory");
1440                 xo_emit("{k:type/%13s/%s} {:in-use/%5ju} "
1441                     "{:memory-use/%5ju}{U:K} {:high-use/%7s} "
1442                     "{:requests/%8ju}  ",
1443                     memstat_get_name(mtp), (uintmax_t)memstat_get_count(mtp),
1444                     ((uintmax_t)memstat_get_bytes(mtp) + 1023) / 1024, "-",
1445                     (uintmax_t)memstat_get_numallocs(mtp));
1446                 first = 1;
1447                 xo_open_list("size");
1448                 for (i = 0; i < 32; i++) {
1449                         if (memstat_get_sizemask(mtp) & (1 << i)) {
1450                                 if (!first)
1451                                         xo_emit(",");
1452                                 xo_emit("{l:size/%d}", 1 << (i + 4));
1453                                 first = 0;
1454                         }
1455                 }
1456                 xo_close_list("size");
1457                 xo_close_instance("memory");
1458                 xo_emit("\n");
1459         }
1460         xo_close_list("memory");
1461         xo_close_container("malloc-statistics");
1462         memstat_mtl_free(mtlp);
1463 }
1464
1465 static void
1466 domemstat_zone(void)
1467 {
1468         struct memory_type_list *mtlp;
1469         struct memory_type *mtp;
1470         int error;
1471         char name[MEMTYPE_MAXNAME + 1];
1472
1473         mtlp = memstat_mtl_alloc();
1474         if (mtlp == NULL) {
1475                 xo_warn("memstat_mtl_alloc");
1476                 return;
1477         }
1478         if (kd == NULL) {
1479                 if (memstat_sysctl_uma(mtlp, 0) < 0) {
1480                         xo_warnx("memstat_sysctl_uma: %s",
1481                             memstat_strerror(memstat_mtl_geterror(mtlp)));
1482                         return;
1483                 }
1484         } else {
1485                 if (memstat_kvm_uma(mtlp, kd) < 0) {
1486                         error = memstat_mtl_geterror(mtlp);
1487                         if (error == MEMSTAT_ERROR_KVM)
1488                                 xo_warnx("memstat_kvm_uma: %s",
1489                                     kvm_geterr(kd));
1490                         else
1491                                 xo_warnx("memstat_kvm_uma: %s",
1492                                     memstat_strerror(error));
1493                 }
1494         }
1495         xo_open_container("memory-zone-statistics");
1496         xo_emit("{T:/%-20s} {T:/%6s} {T:/%6s} {T:/%8s} {T:/%8s} {T:/%8s} "
1497             "{T:/%4s} {T:/%4s}\n\n", "ITEM", "SIZE",
1498             "LIMIT", "USED", "FREE", "REQ", "FAIL", "SLEEP");
1499         xo_open_list("zone");
1500         for (mtp = memstat_mtl_first(mtlp); mtp != NULL;
1501             mtp = memstat_mtl_next(mtp)) {
1502                 strlcpy(name, memstat_get_name(mtp), MEMTYPE_MAXNAME);
1503                 strcat(name, ":");
1504                 xo_open_instance("zone");
1505                 xo_emit("{d:name/%-20s}{ke:name/%s} {:size/%6ju}, "
1506                     "{:limit/%6ju},{:used/%8ju},"
1507                     "{:free/%8ju},{:requests/%8ju},"
1508                     "{:fail/%4ju},{:sleep/%4ju}\n", name,
1509                     memstat_get_name(mtp),
1510                     (uintmax_t)memstat_get_size(mtp),
1511                     (uintmax_t)memstat_get_countlimit(mtp),
1512                     (uintmax_t)memstat_get_count(mtp),
1513                     (uintmax_t)memstat_get_free(mtp),
1514                     (uintmax_t)memstat_get_numallocs(mtp),
1515                     (uintmax_t)memstat_get_failures(mtp),
1516                     (uintmax_t)memstat_get_sleeps(mtp));
1517                 xo_close_instance("zone");
1518         }
1519         memstat_mtl_free(mtlp);
1520         xo_close_list("zone");
1521         xo_close_container("memory-zone-statistics");
1522         xo_emit("\n");
1523 }
1524
1525 static void
1526 display_object(struct kinfo_vmobject *kvo)
1527 {
1528         const char *str;
1529
1530         xo_open_instance("object");
1531         xo_emit("{:resident/%5ju} ", (uintmax_t)kvo->kvo_resident);
1532         xo_emit("{:active/%5ju} ", (uintmax_t)kvo->kvo_active);
1533         xo_emit("{:inactive/%5ju} ", (uintmax_t)kvo->kvo_inactive);
1534         xo_emit("{:refcount/%3d} ", kvo->kvo_ref_count);
1535         xo_emit("{:shadowcount/%3d} ", kvo->kvo_shadow_count);
1536         switch (kvo->kvo_memattr) {
1537 #ifdef VM_MEMATTR_UNCACHEABLE
1538         case VM_MEMATTR_UNCACHEABLE:
1539                 str = "UC";
1540                 break;
1541 #endif
1542 #ifdef VM_MEMATTR_WRITE_COMBINING
1543         case VM_MEMATTR_WRITE_COMBINING:
1544                 str = "WC";
1545                 break;
1546 #endif
1547 #ifdef VM_MEMATTR_WRITE_THROUGH
1548         case VM_MEMATTR_WRITE_THROUGH:
1549                 str = "WT";
1550                 break;
1551 #endif
1552 #ifdef VM_MEMATTR_WRITE_PROTECTED
1553         case VM_MEMATTR_WRITE_PROTECTED:
1554                 str = "WP";
1555                 break;
1556 #endif
1557 #ifdef VM_MEMATTR_WRITE_BACK
1558         case VM_MEMATTR_WRITE_BACK:
1559                 str = "WB";
1560                 break;
1561 #endif
1562 #ifdef VM_MEMATTR_WEAK_UNCACHEABLE
1563         case VM_MEMATTR_WEAK_UNCACHEABLE:
1564                 str = "UC-";
1565                 break;
1566 #endif
1567 #ifdef VM_MEMATTR_WB_WA
1568         case VM_MEMATTR_WB_WA:
1569                 str = "WB";
1570                 break;
1571 #endif
1572 #ifdef VM_MEMATTR_NOCACHE
1573         case VM_MEMATTR_NOCACHE:
1574                 str = "NC";
1575                 break;
1576 #endif
1577 #ifdef VM_MEMATTR_DEVICE
1578         case VM_MEMATTR_DEVICE:
1579                 str = "DEV";
1580                 break;
1581 #endif
1582 #ifdef VM_MEMATTR_CACHEABLE
1583         case VM_MEMATTR_CACHEABLE:
1584                 str = "C";
1585                 break;
1586 #endif
1587 #ifdef VM_MEMATTR_PREFETCHABLE
1588         case VM_MEMATTR_PREFETCHABLE:
1589                 str = "PRE";
1590                 break;
1591 #endif
1592         default:
1593                 str = "??";
1594                 break;
1595         }
1596         xo_emit("{:attribute/%-3s} ", str);
1597         switch (kvo->kvo_type) {
1598         case KVME_TYPE_NONE:
1599                 str = "--";
1600                 break;
1601         case KVME_TYPE_DEFAULT:
1602                 str = "df";
1603                 break;
1604         case KVME_TYPE_VNODE:
1605                 str = "vn";
1606                 break;
1607         case KVME_TYPE_SWAP:
1608                 str = "sw";
1609                 break;
1610         case KVME_TYPE_DEVICE:
1611                 str = "dv";
1612                 break;
1613         case KVME_TYPE_PHYS:
1614                 str = "ph";
1615                 break;
1616         case KVME_TYPE_DEAD:
1617                 str = "dd";
1618                 break;
1619         case KVME_TYPE_SG:
1620                 str = "sg";
1621                 break;
1622         case KVME_TYPE_MGTDEVICE:
1623                 str = "md";
1624                 break;
1625         case KVME_TYPE_UNKNOWN:
1626         default:
1627                 str = "??";
1628                 break;
1629         }
1630         xo_emit("{:type/%-2s} ", str);
1631         xo_emit("{:path/%-s}\n", kvo->kvo_path);
1632         xo_close_instance("object");
1633 }
1634
1635 static void
1636 doobjstat(void)
1637 {
1638         struct kinfo_vmobject *kvo;
1639         int cnt, i;
1640
1641         kvo = kinfo_getvmobject(&cnt);
1642         if (kvo == NULL) {
1643                 xo_warn("Failed to fetch VM object list");
1644                 return;
1645         }
1646         xo_emit("{T:RES/%5s} {T:ACT/%5s} {T:INACT/%5s} {T:REF/%3s} {T:SHD/%3s} "
1647             "{T:CM/%3s} {T:TP/%2s} {T:PATH/%s}\n");
1648         xo_open_list("object");
1649         for (i = 0; i < cnt; i++)
1650                 display_object(&kvo[i]);
1651         free(kvo);
1652         xo_close_list("object");
1653 }
1654
1655 /*
1656  * kread reads something from the kernel, given its nlist index.
1657  */
1658 static void
1659 kreado(int nlx, void *addr, size_t size, size_t offset)
1660 {
1661         const char *sym;
1662
1663         if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) {
1664                 sym = namelist[nlx].n_name;
1665                 if (*sym == '_')
1666                         ++sym;
1667                 xo_errx(1, "symbol %s not defined", sym);
1668         }
1669         if ((size_t)kvm_read(kd, namelist[nlx].n_value + offset, addr,
1670             size) != size) {
1671                 sym = namelist[nlx].n_name;
1672                 if (*sym == '_')
1673                         ++sym;
1674                 xo_errx(1, "%s: %s", sym, kvm_geterr(kd));
1675         }
1676 }
1677
1678 static void
1679 kread(int nlx, void *addr, size_t size)
1680 {
1681
1682         kreado(nlx, addr, size, 0);
1683 }
1684
1685 static void
1686 usage(void)
1687 {
1688         xo_error("%s%s",
1689             "usage: vmstat [-afHhimoPsz] [-M core [-N system]] [-c count] [-n devs]\n",
1690             "              [-p type,if,pass] [-w wait] [disks] [wait [count]]\n");
1691         xo_finish();
1692         exit(1);
1693 }