usr.bin/vmstat/vmstat.c

   1 /*
   2  * Copyright (c) 1980, 1986, 1991, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #ifndef lint
  31 static const char copyright[] =
  32 "@(#) Copyright (c) 1980, 1986, 1991, 1993\n\
  33         The Regents of the University of California.  All rights reserved.\n";
  34 #endif /* not lint */
  35
  36 #if 0
  37 #ifndef lint
  38 static char sccsid[] = "@(#)vmstat.c    8.1 (Berkeley) 6/6/93";
  39 #endif /* not lint */
  40 #endif
  41
  42 #include <sys/cdefs.h>
  43 __FBSDID("$FreeBSD$");
  44
  45 #include <sys/param.h>
  46 #include <sys/proc.h>
  47 #include <sys/uio.h>
  48 #include <sys/namei.h>
  49 #include <sys/malloc.h>
  50 #include <sys/signal.h>
  51 #include <sys/fcntl.h>
  52 #include <sys/ioctl.h>
  53 #include <sys/resource.h>
  54 #include <sys/sysctl.h>
  55 #include <sys/time.h>
  56 #include <sys/user.h>
  57 #define _WANT_VMMETER
  58 #include <sys/vmmeter.h>
  59 #include <sys/pcpu.h>
  60
  61 #include <vm/vm_param.h>
  62
  63 #include <ctype.h>
  64 #include <devstat.h>
  65 #include <err.h>
  66 #include <errno.h>
  67 #include <inttypes.h>
  68 #include <kvm.h>
  69 #include <limits.h>
  70 #include <memstat.h>
  71 #include <nlist.h>
  72 #include <paths.h>
  73 #include <stdio.h>
  74 #include <stdlib.h>
  75 #include <string.h>
  76 #include <sysexits.h>
  77 #include <time.h>
  78 #include <unistd.h>
  79 #include <libutil.h>
  80 #include <libxo/xo.h>
  81
  82 #define VMSTAT_XO_VERSION "1"
  83
  84 static char da[] = "da";
  85
  86 static struct nlist namelist[] = {
  87 #define X_SUM           0
  88         { "_vm_cnt" },
  89 #define X_HZ            1
  90         { "_hz" },
  91 #define X_STATHZ        2
  92         { "_stathz" },
  93 #define X_NCHSTATS      3
  94         { "_nchstats" },
  95 #define X_INTRNAMES     4
  96         { "_intrnames" },
  97 #define X_SINTRNAMES    5
  98         { "_sintrnames" },
  99 #define X_INTRCNT       6
 100         { "_intrcnt" },
 101 #define X_SINTRCNT      7
 102         { "_sintrcnt" },
 103 #ifdef notyet
 104 #define X_DEFICIT       XXX
 105         { "_deficit" },
 106 #define X_REC           XXX
 107         { "_rectime" },
 108 #define X_PGIN          XXX
 109         { "_pgintime" },
 110 #define X_XSTATS        XXX
 111         { "_xstats" },
 112 #define X_END           XXX
 113 #else
 114 #define X_END           8
 115 #endif
 116         { "" },
 117 };
 118
 119 static struct statinfo cur, last;
 120 static int num_devices, maxshowdevs;
 121 static long generation;
 122 static struct device_selection *dev_select;
 123 static int num_selected;
 124 static struct devstat_match *matches;
 125 static int num_matches = 0;
 126 static int num_devices_specified, num_selections;
 127 static long select_generation;
 128 static char **specified_devices;
 129 static devstat_select_mode select_mode;
 130
 131 static struct __vmmeter {
 132         uint64_t v_swtch;
 133         uint64_t v_trap;
 134         uint64_t v_syscall;
 135         uint64_t v_intr;
 136         uint64_t v_soft;
 137         uint64_t v_vm_faults;
 138         uint64_t v_io_faults;
 139         uint64_t v_cow_faults;
 140         uint64_t v_cow_optim;
 141         uint64_t v_zfod;
 142         uint64_t v_ozfod;
 143         uint64_t v_swapin;
 144         uint64_t v_swapout;
 145         uint64_t v_swappgsin;
 146         uint64_t v_swappgsout;
 147         uint64_t v_vnodein;
 148         uint64_t v_vnodeout;
 149         uint64_t v_vnodepgsin;
 150         uint64_t v_vnodepgsout;
 151         uint64_t v_intrans;
 152         uint64_t v_reactivated;
 153         uint64_t v_pdwakeups;
 154         uint64_t v_pdpages;
 155         uint64_t v_pdshortfalls;
 156         uint64_t v_dfree;
 157         uint64_t v_pfree;
 158         uint64_t v_tfree;
 159         uint64_t v_forks;
 160         uint64_t v_vforks;
 161         uint64_t v_rforks;
 162         uint64_t v_kthreads;
 163         uint64_t v_forkpages;
 164         uint64_t v_vforkpages;
 165         uint64_t v_rforkpages;
 166         uint64_t v_kthreadpages;
 167         u_int v_page_size;
 168         u_int v_page_count;
 169         u_int v_free_reserved;
 170         u_int v_free_target;
 171         u_int v_free_min;
 172         u_int v_free_count;
 173         u_int v_wire_count;
 174         u_int v_active_count;
 175         u_int v_inactive_target;
 176         u_int v_inactive_count;
 177         u_int v_laundry_count;
 178         u_int v_pageout_free_min;
 179         u_int v_interrupt_free_min;
 180         u_int v_free_severe;
 181 } sum, osum;
 182
 183 #define VMSTAT_DEFAULT_LINES    20      /* Default number of `winlines'. */
 184 volatile sig_atomic_t wresized;         /* Tty resized, when non-zero. */
 185 static int winlines = VMSTAT_DEFAULT_LINES; /* Current number of tty rows. */
 186
 187 static int      aflag;
 188 static int      nflag;
 189 static int      Pflag;
 190 static int      hflag;
 191
 192 static kvm_t   *kd;
 193
 194 #define FORKSTAT        0x01
 195 #define INTRSTAT        0x02
 196 #define MEMSTAT         0x04
 197 #define SUMSTAT         0x08
 198 #define TIMESTAT        0x10
 199 #define VMSTAT          0x20
 200 #define ZMEMSTAT        0x40
 201 #define OBJSTAT         0x80
 202
 203 static void     cpustats(void);
 204 static void     pcpustats(int, u_long, int);
 205 static void     devstats(void);
 206 static void     doforkst(void);
 207 static void     dointr(unsigned int, int);
 208 static void     doobjstat(void);
 209 static void     dosum(void);
 210 static void     dovmstat(unsigned int, int);
 211 static void     domemstat_malloc(void);
 212 static void     domemstat_zone(void);
 213 static void     kread(int, void *, size_t);
 214 static void     kreado(int, void *, size_t, size_t);
 215 static char    *kgetstr(const char *);
 216 static void     needhdr(int);
 217 static void     needresize(int);
 218 static void     doresize(void);
 219 static void     printhdr(int, u_long);
 220 static void     usage(void);
 221
 222 static long     pct(long, long);
 223 static long long        getuptime(void);
 224
 225 static char   **getdrivedata(char **);
 226
 227 int
 228 main(int argc, char *argv[])
 229 {
 230         int c, todo;
 231         unsigned int interval;
 232         float f;
 233         int reps;
 234         char *memf, *nlistf;
 235         char errbuf[_POSIX2_LINE_MAX];
 236
 237         memf = nlistf = NULL;
 238         interval = reps = todo = 0;
 239         maxshowdevs = 2;
 240         hflag = isatty(1);
 241
 242         argc = xo_parse_args(argc, argv);
 243         if (argc < 0)
 244                 return argc;
 245
 246         while ((c = getopt(argc, argv, "ac:fhHiM:mN:n:oPp:stw:z")) != -1) {
 247                 switch (c) {
 248                 case 'a':
 249                         aflag++;
 250                         break;
 251                 case 'c':
 252                         reps = atoi(optarg);
 253                         break;
 254                 case 'P':
 255                         Pflag++;
 256                         break;
 257                 case 'f':
 258                         todo |= FORKSTAT;
 259                         break;
 260                 case 'h':
 261                         hflag = 1;
 262                         break;
 263                 case 'H':
 264                         hflag = 0;
 265                         break;
 266                 case 'i':
 267                         todo |= INTRSTAT;
 268                         break;
 269                 case 'M':
 270                         memf = optarg;
 271                         break;
 272                 case 'm':
 273                         todo |= MEMSTAT;
 274                         break;
 275                 case 'N':
 276                         nlistf = optarg;
 277                         break;
 278                 case 'n':
 279                         nflag = 1;
 280                         maxshowdevs = atoi(optarg);
 281                         if (maxshowdevs < 0)
 282                                 xo_errx(1, "number of devices %d is < 0",
 283                                      maxshowdevs);
 284                         break;
 285                 case 'o':
 286                         todo |= OBJSTAT;
 287                         break;
 288                 case 'p':
 289                         if (devstat_buildmatch(optarg, &matches, &num_matches) != 0)
 290                                 xo_errx(1, "%s", devstat_errbuf);
 291                         break;
 292                 case 's':
 293                         todo |= SUMSTAT;
 294                         break;
 295                 case 't':
 296 #ifdef notyet
 297                         todo |= TIMESTAT;
 298 #else
 299                         xo_errx(EX_USAGE, "sorry, -t is not (re)implemented yet");
 300 #endif
 301                         break;
 302                 case 'w':
 303                         /* Convert to milliseconds. */
 304                         f = atof(optarg);
 305                         interval = f * 1000;
 306                         break;
 307                 case 'z':
 308                         todo |= ZMEMSTAT;
 309                         break;
 310                 case '?':
 311                 default:
 312                         usage();
 313                 }
 314         }
 315         argc -= optind;
 316         argv += optind;
 317
 318         xo_set_version(VMSTAT_XO_VERSION);
 319         if (todo == 0)
 320                 todo = VMSTAT;
 321
 322         if (memf != NULL) {
 323                 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
 324                 if (kd == NULL)
 325                         xo_errx(1, "kvm_openfiles: %s", errbuf);
 326         }
 327
 328 retry_nlist:
 329         if (kd != NULL && (c = kvm_nlist(kd, namelist)) != 0) {
 330                 if (c > 0) {
 331                         int bufsize = 0, len = 0;
 332                         char *buf, *bp;
 333                         /*
 334                          * 'cnt' was renamed to 'vm_cnt'. If 'vm_cnt' is not
 335                          * found try looking up older 'cnt' symbol.
 336                          * */
 337                         if (namelist[X_SUM].n_type == 0 &&
 338                             strcmp(namelist[X_SUM].n_name, "_vm_cnt") == 0) {
 339                                 namelist[X_SUM].n_name = "_cnt";
 340                                 goto retry_nlist;
 341                         }
 342                         for (c = 0; c < (int)(nitems(namelist)); c++)
 343                                 if (namelist[c].n_type == 0)
 344                                         bufsize += strlen(namelist[c].n_name) + 1;
 345                         bufsize += len + 1;
 346                         buf = bp = alloca(bufsize);
 347
 348                         for (c = 0; c < (int)(nitems(namelist)); c++)
 349                                 if (namelist[c].n_type == 0) {
 350                                         xo_error(" %s",
 351                                             namelist[c].n_name);
 352                                         len = strlen(namelist[c].n_name);
 353                                         *bp++ = ' ';
 354                                         memcpy(bp, namelist[c].n_name, len);
 355                                         bp += len;
 356                                 }
 357                         *bp = '\0';
 358                         xo_error("undefined symbols:\n", buf);
 359                 } else
 360                         xo_warnx("kvm_nlist: %s", kvm_geterr(kd));
 361                 xo_finish();
 362                 exit(1);
 363         }
 364         if (kd && Pflag)
 365                 xo_errx(1, "Cannot use -P with crash dumps");
 366
 367         if (todo & VMSTAT) {
 368                 /*
 369                  * Make sure that the userland devstat version matches the
 370                  * kernel devstat version.  If not, exit and print a
 371                  * message informing the user of his mistake.
 372                  */
 373                 if (devstat_checkversion(NULL) < 0)
 374                         xo_errx(1, "%s", devstat_errbuf);
 375
 376
 377                 argv = getdrivedata(argv);
 378         }
 379
 380         if (*argv) {
 381                 f = atof(*argv);
 382                 interval = f * 1000;
 383                 if (*++argv)
 384                         reps = atoi(*argv);
 385         }
 386
 387         if (interval) {
 388                 if (!reps)
 389                         reps = -1;
 390         } else if (reps)
 391                 interval = 1 * 1000;
 392
 393         if (todo & FORKSTAT)
 394                 doforkst();
 395         if (todo & MEMSTAT)
 396                 domemstat_malloc();
 397         if (todo & ZMEMSTAT)
 398                 domemstat_zone();
 399         if (todo & SUMSTAT)
 400                 dosum();
 401         if (todo & OBJSTAT)
 402                 doobjstat();
 403 #ifdef notyet
 404         if (todo & TIMESTAT)
 405                 dotimes();
 406 #endif
 407         if (todo & INTRSTAT)
 408                 dointr(interval, reps);
 409         if (todo & VMSTAT)
 410                 dovmstat(interval, reps);
 411         xo_finish();
 412         exit(0);
 413 }
 414
 415 static int
 416 mysysctl(const char *name, void *oldp, size_t *oldlenp)
 417 {
 418         int error;
 419
 420         error = sysctlbyname(name, oldp, oldlenp, NULL, 0);
 421         if (error != 0 && errno != ENOMEM)
 422                 xo_err(1, "sysctl(%s)", name);
 423         return (error);
 424 }
 425
 426 static char **
 427 getdrivedata(char **argv)
 428 {
 429         if ((num_devices = devstat_getnumdevs(NULL)) < 0)
 430                 xo_errx(1, "%s", devstat_errbuf);
 431
 432         cur.dinfo = (struct devinfo *)calloc(1, sizeof(struct devinfo));
 433         last.dinfo = (struct devinfo *)calloc(1, sizeof(struct devinfo));
 434
 435         if (devstat_getdevs(NULL, &cur) == -1)
 436                 xo_errx(1, "%s", devstat_errbuf);
 437
 438         num_devices = cur.dinfo->numdevs;
 439         generation = cur.dinfo->generation;
 440
 441         specified_devices = (char **)malloc(sizeof(char *));
 442         for (num_devices_specified = 0; *argv; ++argv) {
 443                 if (isdigit(**argv))
 444                         break;
 445                 num_devices_specified++;
 446                 specified_devices = (char **)realloc(specified_devices,
 447                                                      sizeof(char *) *
 448                                                      num_devices_specified);
 449                 specified_devices[num_devices_specified - 1] = *argv;
 450         }
 451         dev_select = NULL;
 452
 453         if (nflag == 0 && maxshowdevs < num_devices_specified)
 454                         maxshowdevs = num_devices_specified;
 455
 456         /*
 457          * People are generally only interested in disk statistics when
 458          * they're running vmstat.  So, that's what we're going to give
 459          * them if they don't specify anything by default.  We'll also give
 460          * them any other random devices in the system so that we get to
 461          * maxshowdevs devices, if that many devices exist.  If the user
 462          * specifies devices on the command line, either through a pattern
 463          * match or by naming them explicitly, we will give the user only
 464          * those devices.
 465          */
 466         if ((num_devices_specified == 0) && (num_matches == 0)) {
 467                 if (devstat_buildmatch(da, &matches, &num_matches) != 0)
 468                         xo_errx(1, "%s", devstat_errbuf);
 469
 470                 select_mode = DS_SELECT_ADD;
 471         } else
 472                 select_mode = DS_SELECT_ONLY;
 473
 474         /*
 475          * At this point, selectdevs will almost surely indicate that the
 476          * device list has changed, so we don't look for return values of 0
 477          * or 1.  If we get back -1, though, there is an error.
 478          */
 479         if (devstat_selectdevs(&dev_select, &num_selected, &num_selections,
 480                        &select_generation, generation, cur.dinfo->devices,
 481                        num_devices, matches, num_matches, specified_devices,
 482                        num_devices_specified, select_mode,
 483                        maxshowdevs, 0) == -1)
 484                 xo_errx(1, "%s", devstat_errbuf);
 485
 486         return(argv);
 487 }
 488
 489 /* Return system uptime in nanoseconds */
 490 static long long
 491 getuptime(void)
 492 {
 493         struct timespec sp;
 494
 495         (void)clock_gettime(CLOCK_UPTIME, &sp);
 496
 497         return((long long)sp.tv_sec * 1000000000LL + sp.tv_nsec);
 498 }
 499
 500 static void
 501 fill_vmmeter(struct __vmmeter *vmmp)
 502 {
 503         struct pcpu **pcpu;
 504         int maxcpu, i;
 505
 506         if (kd != NULL) {
 507                 struct vmmeter vm_cnt;
 508
 509                 kread(X_SUM, &vm_cnt, sizeof(vm_cnt));
 510 #define GET_COUNTER(name) \
 511                 vmmp->name = kvm_counter_u64_fetch(kd, (u_long)vm_cnt.name)
 512                 GET_COUNTER(v_swtch);
 513                 GET_COUNTER(v_trap);
 514                 GET_COUNTER(v_syscall);
 515                 GET_COUNTER(v_intr);
 516                 GET_COUNTER(v_soft);
 517                 GET_COUNTER(v_vm_faults);
 518                 GET_COUNTER(v_io_faults);
 519                 GET_COUNTER(v_cow_faults);
 520                 GET_COUNTER(v_cow_optim);
 521                 GET_COUNTER(v_zfod);
 522                 GET_COUNTER(v_ozfod);
 523                 GET_COUNTER(v_swapin);
 524                 GET_COUNTER(v_swapout);
 525                 GET_COUNTER(v_swappgsin);
 526                 GET_COUNTER(v_swappgsout);
 527                 GET_COUNTER(v_vnodein);
 528                 GET_COUNTER(v_vnodeout);
 529                 GET_COUNTER(v_vnodepgsin);
 530                 GET_COUNTER(v_vnodepgsout);
 531                 GET_COUNTER(v_intrans);
 532                 GET_COUNTER(v_tfree);
 533                 GET_COUNTER(v_forks);
 534                 GET_COUNTER(v_vforks);
 535                 GET_COUNTER(v_rforks);
 536                 GET_COUNTER(v_kthreads);
 537                 GET_COUNTER(v_forkpages);
 538                 GET_COUNTER(v_vforkpages);
 539                 GET_COUNTER(v_rforkpages);
 540                 GET_COUNTER(v_kthreadpages);
 541 #undef GET_COUNTER
 542         } else {
 543                 size_t size;
 544
 545 #define GET_VM_STATS(cat, name) do {                                    \
 546         size = sizeof(vmmp->name);                                      \
 547         mysysctl("vm.stats." #cat "." #name, &vmmp->name, &size);       \
 548 } while (0)
 549                 /* sys */
 550                 GET_VM_STATS(sys, v_swtch);
 551                 GET_VM_STATS(sys, v_trap);
 552                 GET_VM_STATS(sys, v_syscall);
 553                 GET_VM_STATS(sys, v_intr);
 554                 GET_VM_STATS(sys, v_soft);
 555
 556                 /* vm */
 557                 GET_VM_STATS(vm, v_vm_faults);
 558                 GET_VM_STATS(vm, v_io_faults);
 559                 GET_VM_STATS(vm, v_cow_faults);
 560                 GET_VM_STATS(vm, v_cow_optim);
 561                 GET_VM_STATS(vm, v_zfod);
 562                 GET_VM_STATS(vm, v_ozfod);
 563                 GET_VM_STATS(vm, v_swapin);
 564                 GET_VM_STATS(vm, v_swapout);
 565                 GET_VM_STATS(vm, v_swappgsin);
 566                 GET_VM_STATS(vm, v_swappgsout);
 567                 GET_VM_STATS(vm, v_vnodein);
 568                 GET_VM_STATS(vm, v_vnodeout);
 569                 GET_VM_STATS(vm, v_vnodepgsin);
 570                 GET_VM_STATS(vm, v_vnodepgsout);
 571                 GET_VM_STATS(vm, v_intrans);
 572                 GET_VM_STATS(vm, v_reactivated);
 573                 GET_VM_STATS(vm, v_pdwakeups);
 574                 GET_VM_STATS(vm, v_pdpages);
 575                 GET_VM_STATS(vm, v_pdshortfalls);
 576                 GET_VM_STATS(vm, v_dfree);
 577                 GET_VM_STATS(vm, v_pfree);
 578                 GET_VM_STATS(vm, v_tfree);
 579                 GET_VM_STATS(vm, v_page_size);
 580                 GET_VM_STATS(vm, v_page_count);
 581                 GET_VM_STATS(vm, v_free_reserved);
 582                 GET_VM_STATS(vm, v_free_target);
 583                 GET_VM_STATS(vm, v_free_min);
 584                 GET_VM_STATS(vm, v_free_count);
 585                 GET_VM_STATS(vm, v_wire_count);
 586                 GET_VM_STATS(vm, v_active_count);
 587                 GET_VM_STATS(vm, v_inactive_target);
 588                 GET_VM_STATS(vm, v_inactive_count);
 589                 GET_VM_STATS(vm, v_laundry_count);
 590                 GET_VM_STATS(vm, v_pageout_free_min);
 591                 GET_VM_STATS(vm, v_interrupt_free_min);
 592                 /*GET_VM_STATS(vm, v_free_severe);*/
 593                 GET_VM_STATS(vm, v_forks);
 594                 GET_VM_STATS(vm, v_vforks);
 595                 GET_VM_STATS(vm, v_rforks);
 596                 GET_VM_STATS(vm, v_kthreads);
 597                 GET_VM_STATS(vm, v_forkpages);
 598                 GET_VM_STATS(vm, v_vforkpages);
 599                 GET_VM_STATS(vm, v_rforkpages);
 600                 GET_VM_STATS(vm, v_kthreadpages);
 601 #undef GET_VM_STATS
 602         }
 603 }
 604
 605 static void
 606 fill_vmtotal(struct vmtotal *vmtp)
 607 {
 608         if (kd != NULL) {
 609                 /* XXX fill vmtp */
 610                 xo_errx(1, "not implemented");
 611         } else {
 612                 size_t size = sizeof(*vmtp);
 613                 mysysctl("vm.vmtotal", vmtp, &size);
 614                 if (size != sizeof(*vmtp))
 615                         xo_errx(1, "vm.total size mismatch");
 616         }
 617 }
 618
 619 /* Determine how many cpu columns, and what index they are in kern.cp_times */
 620 static int
 621 getcpuinfo(u_long *maskp, int *maxidp)
 622 {
 623         int maxcpu;
 624         int maxid;
 625         int ncpus;
 626         int i, j;
 627         int empty;
 628         size_t size;
 629         long *times;
 630         u_long mask;
 631
 632         if (kd != NULL)
 633                 xo_errx(1, "not implemented");
 634         mask = 0;
 635         ncpus = 0;
 636         size = sizeof(maxcpu);
 637         mysysctl("kern.smp.maxcpus", &maxcpu, &size);
 638         if (size != sizeof(maxcpu))
 639                 xo_errx(1, "sysctl kern.smp.maxcpus");
 640         size = sizeof(long) * maxcpu * CPUSTATES;
 641         times = malloc(size);
 642         if (times == NULL)
 643                 xo_err(1, "malloc %zd bytes", size);
 644         mysysctl("kern.cp_times", times, &size);
 645         maxid = (size / CPUSTATES / sizeof(long)) - 1;
 646         for (i = 0; i <= maxid; i++) {
 647                 empty = 1;
 648                 for (j = 0; empty && j < CPUSTATES; j++) {
 649                         if (times[i * CPUSTATES + j] != 0)
 650                                 empty = 0;
 651                 }
 652                 if (!empty) {
 653                         mask |= (1ul << i);
 654                         ncpus++;
 655                 }
 656         }
 657         if (maskp)
 658                 *maskp = mask;
 659         if (maxidp)
 660                 *maxidp = maxid;
 661         return (ncpus);
 662 }
 663
 664
 665 static void
 666 prthuman(const char *name, u_int64_t val, int size)
 667 {
 668         char buf[10];
 669         int flags;
 670         char fmt[128];
 671
 672         snprintf(fmt, sizeof(fmt), "{:%s/%%*s}", name);
 673
 674         if (size < 5 || size > 9)
 675                 xo_errx(1, "doofus");
 676         flags = HN_B | HN_NOSPACE | HN_DECIMAL;
 677         humanize_number(buf, size, val, "", HN_AUTOSCALE, flags);
 678         xo_attr("value", "%ju", (uintmax_t) val);
 679         xo_emit(fmt, size, buf);
 680 }
 681
 682 static int hz, hdrcnt;
 683
 684 static long *cur_cp_times;
 685 static long *last_cp_times;
 686 static size_t size_cp_times;
 687
 688 static void
 689 dovmstat(unsigned int interval, int reps)
 690 {
 691         struct vmtotal total;
 692         time_t uptime, halfuptime;
 693         struct devinfo *tmp_dinfo;
 694         size_t size;
 695         int ncpus, maxid;
 696         u_long cpumask;
 697         int rate_adj;
 698
 699         uptime = getuptime() / 1000000000LL;
 700         halfuptime = uptime / 2;
 701         rate_adj = 1;
 702         ncpus = 1;
 703         maxid = 0;
 704
 705         /*
 706          * If the user stops the program (control-Z) and then resumes it,
 707          * print out the header again.
 708          */
 709         (void)signal(SIGCONT, needhdr);
 710
 711         /*
 712          * If our standard output is a tty, then install a SIGWINCH handler
 713          * and set wresized so that our first iteration through the main
 714          * vmstat loop will peek at the terminal's current rows to find out
 715          * how many lines can fit in a screenful of output.
 716          */
 717         if (isatty(fileno(stdout)) != 0) {
 718                 wresized = 1;
 719                 (void)signal(SIGWINCH, needresize);
 720         } else {
 721                 wresized = 0;
 722                 winlines = VMSTAT_DEFAULT_LINES;
 723         }
 724
 725         if (kd != NULL) {
 726                 if (namelist[X_STATHZ].n_type != 0 &&
 727                     namelist[X_STATHZ].n_value != 0)
 728                         kread(X_STATHZ, &hz, sizeof(hz));
 729                 if (!hz)
 730                         kread(X_HZ, &hz, sizeof(hz));
 731         } else {
 732                 struct clockinfo clockrate;
 733
 734                 size = sizeof(clockrate);
 735                 mysysctl("kern.clockrate", &clockrate, &size);
 736                 if (size != sizeof(clockrate))
 737                         xo_errx(1, "clockrate size mismatch");
 738                 hz = clockrate.hz;
 739         }
 740
 741         if (Pflag) {
 742                 ncpus = getcpuinfo(&cpumask, &maxid);
 743                 size_cp_times = sizeof(long) * (maxid + 1) * CPUSTATES;
 744                 cur_cp_times = calloc(1, size_cp_times);
 745                 last_cp_times = calloc(1, size_cp_times);
 746         }
 747         for (hdrcnt = 1;;) {
 748                 if (!--hdrcnt)
 749                         printhdr(maxid, cpumask);
 750                 if (kd != NULL) {
 751                         if (kvm_getcptime(kd, cur.cp_time) < 0)
 752                                 xo_errx(1, "kvm_getcptime: %s", kvm_geterr(kd));
 753                 } else {
 754                         size = sizeof(cur.cp_time);
 755                         mysysctl("kern.cp_time", &cur.cp_time, &size);
 756                         if (size != sizeof(cur.cp_time))
 757                                 xo_errx(1, "cp_time size mismatch");
 758                 }
 759                 if (Pflag) {
 760                         size = size_cp_times;
 761                         mysysctl("kern.cp_times", cur_cp_times, &size);
 762                         if (size != size_cp_times)
 763                                 xo_errx(1, "cp_times mismatch");
 764                 }
 765
 766                 tmp_dinfo = last.dinfo;
 767                 last.dinfo = cur.dinfo;
 768                 cur.dinfo = tmp_dinfo;
 769                 last.snap_time = cur.snap_time;
 770
 771                 /*
 772                  * Here what we want to do is refresh our device stats.
 773                  * getdevs() returns 1 when the device list has changed.
 774                  * If the device list has changed, we want to go through
 775                  * the selection process again, in case a device that we
 776                  * were previously displaying has gone away.
 777                  */
 778                 switch (devstat_getdevs(NULL, &cur)) {
 779                 case -1:
 780                         xo_errx(1, "%s", devstat_errbuf);
 781                         break;
 782                 case 1: {
 783                         int retval;
 784
 785                         num_devices = cur.dinfo->numdevs;
 786                         generation = cur.dinfo->generation;
 787
 788                         retval = devstat_selectdevs(&dev_select, &num_selected,
 789                                             &num_selections, &select_generation,
 790                                             generation, cur.dinfo->devices,
 791                                             num_devices, matches, num_matches,
 792                                             specified_devices,
 793                                             num_devices_specified, select_mode,
 794                                             maxshowdevs, 0);
 795                         switch (retval) {
 796                         case -1:
 797                                 xo_errx(1, "%s", devstat_errbuf);
 798                                 break;
 799                         case 1:
 800                                 printhdr(maxid, cpumask);
 801                                 break;
 802                         default:
 803                                 break;
 804                         }
 805                 }
 806                 default:
 807                         break;
 808                 }
 809
 810                 fill_vmmeter(&sum);
 811                 fill_vmtotal(&total);
 812                 xo_open_container("processes");
 813                 xo_emit("{:runnable/%1d} {:waiting/%ld} "
 814                         "{:swapped-out/%ld}",
 815                     total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw);
 816                 xo_close_container("processes");
 817                 xo_open_container("memory");
 818 #define vmstat_pgtok(a) ((a) * (sum.v_page_size >> 10))
 819 #define rate(x) (((x) * rate_adj + halfuptime) / uptime)        /* round */
 820                 if (hflag) {
 821                         xo_emit("");
 822                         prthuman("available-memory",
 823                                  total.t_avm * (u_int64_t)sum.v_page_size, 5);
 824                         xo_emit(" ");
 825                         prthuman("free-memory",
 826                                  total.t_free * (u_int64_t)sum.v_page_size, 5);
 827                         xo_emit(" ");
 828                 } else {
 829                         xo_emit(" ");
 830                         xo_emit("{:available-memory/%7d}",
 831                                 vmstat_pgtok(total.t_avm));
 832                         xo_emit(" ");
 833                         xo_emit("{:free-memory/%7d}",
 834                                 vmstat_pgtok(total.t_free));
 835                 }
 836                 xo_emit("{:total-page-faults/%5lu} ",
 837                         (unsigned long)rate(sum.v_vm_faults -
 838                         osum.v_vm_faults));
 839                 xo_close_container("memory");
 840
 841                 xo_open_container("paging-rates");
 842                 xo_emit("{:page-reactivated/%3lu} ",
 843                     (unsigned long)rate(sum.v_reactivated - osum.v_reactivated));
 844                 xo_emit("{:paged-in/%3lu} ",
 845                     (unsigned long)rate(sum.v_swapin + sum.v_vnodein -
 846                     (osum.v_swapin + osum.v_vnodein)));
 847                 xo_emit("{:paged-out/%3lu} ",
 848                     (unsigned long)rate(sum.v_swapout + sum.v_vnodeout -
 849                     (osum.v_swapout + osum.v_vnodeout)));
 850                 xo_emit("{:freed/%5lu} ",
 851                     (unsigned long)rate(sum.v_tfree - osum.v_tfree));
 852                 xo_emit("{:scanned/%4lu} ",
 853                     (unsigned long)rate(sum.v_pdpages - osum.v_pdpages));
 854                 xo_close_container("paging-rates");
 855
 856                 devstats();
 857                 xo_open_container("fault-rates");
 858                 xo_emit("{:interrupts/%4lu} {:system-calls/%5lu} "
 859                         "{:context-switches/%5u}",
 860                     (unsigned long)rate(sum.v_intr - osum.v_intr),
 861                     (unsigned long)rate(sum.v_syscall - osum.v_syscall),
 862                     (unsigned long)rate(sum.v_swtch - osum.v_swtch));
 863                 xo_close_container("fault-rates");
 864                 if (Pflag)
 865                         pcpustats(ncpus, cpumask, maxid);
 866                 else
 867                         cpustats();
 868                 xo_emit("\n");
 869                 xo_flush();
 870                 if (reps >= 0 && --reps <= 0)
 871                         break;
 872                 osum = sum;
 873                 uptime = interval;
 874                 rate_adj = 1000;
 875                 /*
 876                  * We round upward to avoid losing low-frequency events
 877                  * (i.e., >= 1 per interval but < 1 per millisecond).
 878                  */
 879                 if (interval != 1)
 880                         halfuptime = (uptime + 1) / 2;
 881                 else
 882                         halfuptime = 0;
 883                 (void)usleep(interval * 1000);
 884         }
 885 }
 886
 887 static void
 888 printhdr(int maxid, u_long cpumask)
 889 {
 890         int i, num_shown;
 891
 892         num_shown = MIN(num_selected, maxshowdevs);
 893         if (hflag) {
 894                 xo_emit("{T:procs}  {T:memory}       {T:/page%*s}", 19, "");
 895         } else {
 896                 xo_emit("{T:procs}     {T:memory}        {T:/page%*s}", 19, "");
 897         }
 898         if (num_shown > 1)
 899                 xo_emit(" {T:/disks %*s}", num_shown * 4 - 7, "");
 900         else if (num_shown == 1)
 901                 xo_emit("   {T:disks}");
 902         xo_emit("   {T:faults}      ");
 903         if (Pflag) {
 904                 for (i = 0; i <= maxid; i++) {
 905                         if (cpumask & (1ul << i))
 906                                 xo_emit("  {T:/cpu%d}   ", i);
 907                 }
 908                 xo_emit("\n");
 909         } else
 910                 xo_emit("   {T:cpu}\n");
 911         if (hflag) {
 912                 xo_emit("{T:r} {T:b} {T:w}  {T:avm}   {T:fre}   {T:flt}  {T:re}  {T:pi}  {T:po}    {T:fr}   {T:sr} ");
 913         } else {
 914                 xo_emit("{T:r} {T:b} {T:w}     {T:avm}     {T:fre}  {T:flt}  {T:re}  {T:pi}  {T:po}    {T:fr}   {T:sr} ");
 915         }
 916         for (i = 0; i < num_devices; i++)
 917                 if ((dev_select[i].selected)
 918                  && (dev_select[i].selected <= maxshowdevs))
 919                         xo_emit("{T:/%c%c%d} ", dev_select[i].device_name[0],
 920                                      dev_select[i].device_name[1],
 921                                      dev_select[i].unit_number);
 922         xo_emit("  {T:in}    {T:sy}    {T:cs}");
 923         if (Pflag) {
 924                 for (i = 0; i <= maxid; i++) {
 925                         if (cpumask & (1ul << i))
 926                                 xo_emit(" {T:us} {T:sy} {T:id}");
 927                 }
 928                 xo_emit("\n");
 929         } else
 930                 xo_emit(" {T:us} {T:sy} {T:id}\n");
 931         if (wresized != 0)
 932                 doresize();
 933         hdrcnt = winlines;
 934 }
 935
 936 /*
 937  * Force a header to be prepended to the next output.
 938  */
 939 static void
 940 needhdr(int dummy __unused)
 941 {
 942
 943         hdrcnt = 1;
 944 }
 945
 946 /*
 947  * When the terminal is resized, force an update of the maximum number of rows
 948  * printed between each header repetition.  Then force a new header to be
 949  * prepended to the next output.
 950  */
 951 void
 952 needresize(int signo)
 953 {
 954
 955         wresized = 1;
 956         hdrcnt = 1;
 957 }
 958
 959 /*
 960  * Update the global `winlines' count of terminal rows.
 961  */
 962 void
 963 doresize(void)
 964 {
 965         int status;
 966         struct winsize w;
 967
 968         for (;;) {
 969                 status = ioctl(fileno(stdout), TIOCGWINSZ, &w);
 970                 if (status == -1 && errno == EINTR)
 971                         continue;
 972                 else if (status == -1)
 973                         xo_err(1, "ioctl");
 974                 if (w.ws_row > 3)
 975                         winlines = w.ws_row - 3;
 976                 else
 977                         winlines = VMSTAT_DEFAULT_LINES;
 978                 break;
 979         }
 980
 981         /*
 982          * Inhibit doresize() calls until we are rescheduled by SIGWINCH.
 983          */
 984         wresized = 0;
 985 }
 986
 987 #ifdef notyet
 988 static void
 989 dotimes(void)
 990 {
 991         unsigned int pgintime, rectime;
 992
 993         kread(X_REC, &rectime, sizeof(rectime));
 994         kread(X_PGIN, &pgintime, sizeof(pgintime));
 995         kread(X_SUM, &sum, sizeof(sum));
 996         xo_emit("{:page-reclaims/%u} {N:reclaims}, "
 997                 "{:reclaim-time/%u} {N:total time (usec)}\n",
 998             sum.v_pgrec, rectime);
 999         xo_emit("{L:average}: {:reclaim-average/%u} {N:usec \\/ reclaim}\n",
1000                 rectime / sum.v_pgrec);
1001         xo_emit("\n");
1002         xo_emit("{:page-ins/%u} {N:page ins}, "
1003                 "{:page-in-time/%u} {N:total time (msec)}\n",
1004             sum.v_pgin, pgintime / 10);
1005         xo_emit("{L:average}: {:average/%8.1f} {N:msec \\/ page in}\n",
1006             pgintime / (sum.v_pgin * 10.0));
1007 }
1008 #endif
1009
1010 static long
1011 pct(long top, long bot)
1012 {
1013         long ans;
1014
1015         if (bot == 0)
1016                 return(0);
1017         ans = (quad_t)top * 100 / bot;
1018         return (ans);
1019 }
1020
1021 #define PCT(top, bot) pct((long)(top), (long)(bot))
1022
1023 static void
1024 dosum(void)
1025 {
1026         struct nchstats lnchstats;
1027         long nchtotal;
1028
1029         fill_vmmeter(&sum);
1030         xo_open_container("summary-statistics");
1031         xo_emit("{:context-switches/%9u} {N:cpu context switches}\n",
1032                 sum.v_swtch);
1033         xo_emit("{:interrupts/%9u} {N:device interrupts}\n",
1034                 sum.v_intr);
1035         xo_emit("{:software-interrupts/%9u} {N:software interrupts}\n",
1036                 sum.v_soft);
1037         xo_emit("{:traps/%9u} {N:traps}\n", sum.v_trap);
1038         xo_emit("{:system-calls/%9u} {N:system calls}\n",
1039                 sum.v_syscall);
1040         xo_emit("{:kernel-threads/%9u} {N:kernel threads created}\n",
1041                 sum.v_kthreads);
1042         xo_emit("{:forks/%9u} {N: fork() calls}\n", sum.v_forks);
1043         xo_emit("{:vforks/%9u} {N:vfork() calls}\n",
1044                 sum.v_vforks);
1045         xo_emit("{:rforks/%9u} {N:rfork() calls}\n",
1046                 sum.v_rforks);
1047         xo_emit("{:swap-ins/%9u} {N:swap pager pageins}\n",
1048                 sum.v_swapin);
1049         xo_emit("{:swap-in-pages/%9u} {N:swap pager pages paged in}\n",
1050                 sum.v_swappgsin);
1051         xo_emit("{:swap-outs/%9u} {N:swap pager pageouts}\n",
1052                 sum.v_swapout);
1053         xo_emit("{:swap-out-pages/%9u} {N:swap pager pages paged out}\n",
1054                 sum.v_swappgsout);
1055         xo_emit("{:vnode-page-ins/%9u} {N:vnode pager pageins}\n",
1056                 sum.v_vnodein);
1057         xo_emit("{:vnode-page-in-pages/%9u} {N:vnode pager pages paged in}\n",
1058                 sum.v_vnodepgsin);
1059         xo_emit("{:vnode-page-outs/%9u} {N:vnode pager pageouts}\n",
1060                 sum.v_vnodeout);
1061         xo_emit("{:vnode-page-outs/%9u} {N:vnode pager pages paged out}\n",
1062                 sum.v_vnodepgsout);
1063         xo_emit("{:page-daemon-wakeups/%9u} {N:page daemon wakeups}\n",
1064                 sum.v_pdwakeups);
1065         xo_emit("{:page-daemon-pages/%9u} {N:pages examined by the page daemon}\n",
1066                 sum.v_pdpages);
1067         xo_emit("{:page-reclamation-shortfalls/%9u} {N:clean page reclamation shortfalls}\n",
1068                 sum.v_pdshortfalls);
1069         xo_emit("{:reactivated/%9u} {N:pages reactivated by the page daemon}\n",
1070                 sum.v_reactivated);
1071         xo_emit("{:copy-on-write-faults/%9u} {N:copy-on-write faults}\n",
1072                 sum.v_cow_faults);
1073         xo_emit("{:copy-on-write-optimized-faults/%9u} {N:copy-on-write optimized faults}\n",
1074                 sum.v_cow_optim);
1075         xo_emit("{:zero-fill-pages/%9u} {N:zero fill pages zeroed}\n",
1076                 sum.v_zfod);
1077         xo_emit("{:zero-fill-prezeroed/%9u} {N:zero fill pages prezeroed}\n",
1078                 sum.v_ozfod);
1079         xo_emit("{:intransit-blocking/%9u} {N:intransit blocking page faults}\n",
1080                 sum.v_intrans);
1081         xo_emit("{:total-faults/%9u} {N:total VM faults taken}\n",
1082                 sum.v_vm_faults);
1083         xo_emit("{:faults-requiring-io/%9u} {N:page faults requiring I\\/O}\n",
1084                 sum.v_io_faults);
1085         xo_emit("{:faults-from-thread-creation/%9u} {N:pages affected by kernel thread creation}\n",
1086                 sum.v_kthreadpages);
1087         xo_emit("{:faults-from-fork/%9u} {N:pages affected by  fork}()\n",
1088                 sum.v_forkpages);
1089         xo_emit("{:faults-from-vfork/%9u} {N:pages affected by vfork}()\n",
1090                 sum.v_vforkpages);
1091         xo_emit("{:pages-rfork/%9u} {N:pages affected by rfork}()\n",
1092                 sum.v_rforkpages);
1093         xo_emit("{:pages-freed/%9u} {N:pages freed}\n",
1094                 sum.v_tfree);
1095         xo_emit("{:pages-freed-by-daemon/%9u} {N:pages freed by daemon}\n",
1096                 sum.v_dfree);
1097         xo_emit("{:pages-freed-on-exit/%9u} {N:pages freed by exiting processes}\n",
1098                 sum.v_pfree);
1099         xo_emit("{:active-pages/%9u} {N:pages active}\n",
1100                 sum.v_active_count);
1101         xo_emit("{:inactive-pages/%9u} {N:pages inactive}\n",
1102                 sum.v_inactive_count);
1103         xo_emit("{:laundry-pages/%9u} {N:pages in the laundry queue}\n",
1104                 sum.v_laundry_count);
1105         xo_emit("{:wired-pages/%9u} {N:pages wired down}\n",
1106                 sum.v_wire_count);
1107         xo_emit("{:free-pages/%9u} {N:pages free}\n",
1108                 sum.v_free_count);
1109         xo_emit("{:bytes-per-page/%9u} {N:bytes per page}\n", sum.v_page_size);
1110         if (kd != NULL) {
1111                 kread(X_NCHSTATS, &lnchstats, sizeof(lnchstats));
1112         } else {
1113                 size_t size = sizeof(lnchstats);
1114                 mysysctl("vfs.cache.nchstats", &lnchstats, &size);
1115                 if (size != sizeof(lnchstats))
1116                         xo_errx(1, "vfs.cache.nchstats size mismatch");
1117         }
1118         nchtotal = lnchstats.ncs_goodhits + lnchstats.ncs_neghits +
1119             lnchstats.ncs_badhits + lnchstats.ncs_falsehits +
1120             lnchstats.ncs_miss + lnchstats.ncs_long;
1121         xo_emit("{:total-name-lookups/%9ld} {N:total name lookups}\n",
1122                 nchtotal);
1123         xo_emit("{P:/%9s} {N:cache hits} "
1124                 "({:positive-cache-hits/%ld}% pos + "
1125                 "{:negative-cache-hits/%ld}% {N:neg}) "
1126                 "system {:cache-hit-percent/%ld}% per-directory\n",
1127             "", PCT(lnchstats.ncs_goodhits, nchtotal),
1128             PCT(lnchstats.ncs_neghits, nchtotal),
1129             PCT(lnchstats.ncs_pass2, nchtotal));
1130         xo_emit("{P:/%9s} {L:deletions} {:deletions/%ld}%, "
1131                 "{L:falsehits} {:false-hits/%ld}%, "
1132                 "{L:toolong} {:too-long/%ld}%\n", "",
1133             PCT(lnchstats.ncs_badhits, nchtotal),
1134             PCT(lnchstats.ncs_falsehits, nchtotal),
1135             PCT(lnchstats.ncs_long, nchtotal));
1136         xo_close_container("summary-statistics");
1137 }
1138
1139 static void
1140 doforkst(void)
1141 {
1142         fill_vmmeter(&sum);
1143         xo_open_container("fork-statistics");
1144         xo_emit("{:fork/%u} {N:forks}, {:fork-pages/%u} {N:pages}, "
1145                 "{L:average} {:fork-average/%.2f}\n",
1146             sum.v_forks, sum.v_forkpages,
1147             sum.v_forks == 0 ? 0.0 :
1148             (double)sum.v_forkpages / sum.v_forks);
1149         xo_emit("{:vfork/%u} {N:vforks}, {:vfork-pages/%u} {N:pages}, "
1150                 "{L:average} {:vfork-average/%.2f}\n",
1151             sum.v_vforks, sum.v_vforkpages,
1152             sum.v_vforks == 0 ? 0.0 :
1153             (double)sum.v_vforkpages / sum.v_vforks);
1154         xo_emit("{:rfork/%u} {N:rforks}, {:rfork-pages/%u} {N:pages}, "
1155                 "{L:average} {:rfork-average/%.2f}\n",
1156             sum.v_rforks, sum.v_rforkpages,
1157             sum.v_rforks == 0 ? 0.0 :
1158             (double)sum.v_rforkpages / sum.v_rforks);
1159         xo_close_container("fork-statistics");
1160 }
1161
1162 static void
1163 devstats(void)
1164 {
1165         int dn, state;
1166         long double transfers_per_second;
1167         long double busy_seconds;
1168         long tmp;
1169
1170         for (state = 0; state < CPUSTATES; ++state) {
1171                 tmp = cur.cp_time[state];
1172                 cur.cp_time[state] -= last.cp_time[state];
1173                 last.cp_time[state] = tmp;
1174         }
1175
1176         busy_seconds = cur.snap_time - last.snap_time;
1177
1178         xo_open_list("device");
1179         for (dn = 0; dn < num_devices; dn++) {
1180                 int di;
1181
1182                 if ((dev_select[dn].selected == 0)
1183                  || (dev_select[dn].selected > maxshowdevs))
1184                         continue;
1185
1186                 di = dev_select[dn].position;
1187
1188                 if (devstat_compute_statistics(&cur.dinfo->devices[di],
1189                     &last.dinfo->devices[di], busy_seconds,
1190                     DSM_TRANSFERS_PER_SECOND, &transfers_per_second,
1191                     DSM_NONE) != 0)
1192                         xo_errx(1, "%s", devstat_errbuf);
1193
1194                 xo_open_instance("device");
1195                 xo_emit("{ekq:name/%c%c%d}{:transfers/%3.0Lf} ",
1196                         dev_select[dn].device_name[0],
1197                         dev_select[dn].device_name[1],
1198                         dev_select[dn].unit_number,
1199                         transfers_per_second);
1200                 xo_close_instance("device");
1201         }
1202         xo_close_list("device");
1203 }
1204
1205 static void
1206 percent(const char *name, double pct, int *over)
1207 {
1208         char buf[10];
1209         char fmt[128];
1210         int l;
1211
1212         snprintf(fmt, sizeof(fmt), " {:%s/%%*s}", name);
1213         l = snprintf(buf, sizeof(buf), "%.0f", pct);
1214         if (l == 1 && *over) {
1215                 xo_emit(fmt, 1, buf);
1216                 (*over)--;
1217         } else
1218                 xo_emit(fmt, 2, buf);
1219         if (l > 2)
1220                 (*over)++;
1221 }
1222
1223 static void
1224 cpustats(void)
1225 {
1226         int state, over;
1227         double lpct, total;
1228
1229         total = 0;
1230         for (state = 0; state < CPUSTATES; ++state)
1231                 total += cur.cp_time[state];
1232         if (total)
1233                 lpct = 100.0 / total;
1234         else
1235                 lpct = 0.0;
1236         over = 0;
1237         xo_open_container("cpu-statistics");
1238         percent("user", (cur.cp_time[CP_USER] + cur.cp_time[CP_NICE]) * lpct, &over);
1239         percent("system", (cur.cp_time[CP_SYS] + cur.cp_time[CP_INTR]) * lpct, &over);
1240         percent("idle", cur.cp_time[CP_IDLE] * lpct, &over);
1241         xo_close_container("cpu-statistics");
1242 }
1243
1244 static void
1245 pcpustats(int ncpus, u_long cpumask, int maxid)
1246 {
1247         int state, i;
1248         double lpct, total;
1249         long tmp;
1250         int over;
1251
1252         /* devstats does this for cp_time */
1253         for (i = 0; i <= maxid; i++) {
1254                 if ((cpumask & (1ul << i)) == 0)
1255                         continue;
1256                 for (state = 0; state < CPUSTATES; ++state) {
1257                         tmp = cur_cp_times[i * CPUSTATES + state];
1258                         cur_cp_times[i * CPUSTATES + state] -= last_cp_times[i *
1259                             CPUSTATES + state];
1260                         last_cp_times[i * CPUSTATES + state] = tmp;
1261                 }
1262         }
1263
1264         over = 0;
1265         xo_open_list("cpu");
1266         for (i = 0; i <= maxid; i++) {
1267                 if ((cpumask & (1ul << i)) == 0)
1268                         continue;
1269                 xo_open_instance("cpu");
1270                 xo_emit("{ke:name/%d}", i);
1271                 total = 0;
1272                 for (state = 0; state < CPUSTATES; ++state)
1273                         total += cur_cp_times[i * CPUSTATES + state];
1274                 if (total)
1275                         lpct = 100.0 / total;
1276                 else
1277                         lpct = 0.0;
1278                 percent("user", (cur_cp_times[i * CPUSTATES + CP_USER] +
1279                          cur_cp_times[i * CPUSTATES + CP_NICE]) * lpct, &over);
1280                 percent("system", (cur_cp_times[i * CPUSTATES + CP_SYS] +
1281                          cur_cp_times[i * CPUSTATES + CP_INTR]) * lpct, &over);
1282                 percent("idle", cur_cp_times[i * CPUSTATES + CP_IDLE] * lpct,
1283                         &over);
1284                 xo_close_instance("cpu");
1285         }
1286         xo_close_list("cpu");
1287 }
1288
1289 static unsigned int
1290 read_intrcnts(unsigned long **intrcnts)
1291 {
1292         size_t intrcntlen;
1293
1294         if (kd != NULL) {
1295                 kread(X_SINTRCNT, &intrcntlen, sizeof(intrcntlen));
1296                 if ((*intrcnts = malloc(intrcntlen)) == NULL)
1297                         err(1, "malloc()");
1298                 kread(X_INTRCNT, *intrcnts, intrcntlen);
1299         } else {
1300                 for (*intrcnts = NULL, intrcntlen = 1024; ; intrcntlen *= 2) {
1301                         *intrcnts = reallocf(*intrcnts, intrcntlen);
1302                         if (*intrcnts == NULL)
1303                                 err(1, "reallocf()");
1304                         if (mysysctl("hw.intrcnt", *intrcnts, &intrcntlen) == 0)
1305                                 break;
1306                 }
1307         }
1308
1309         return (intrcntlen / sizeof(unsigned long));
1310 }
1311
1312 static void
1313 print_intrcnts(unsigned long *intrcnts, unsigned long *old_intrcnts,
1314                 char *intrnames, unsigned int nintr,
1315                 size_t istrnamlen, long long period_ms)
1316 {
1317         unsigned long *intrcnt, *old_intrcnt;
1318         uint64_t inttotal, old_inttotal, total_count, total_rate;
1319         char* intrname;
1320         unsigned int i;
1321
1322         inttotal = 0;
1323         old_inttotal = 0;
1324         intrname = intrnames;
1325         xo_open_list("interrupt");
1326         for (i = 0, intrcnt=intrcnts, old_intrcnt=old_intrcnts; i < nintr; i++) {
1327                 if (intrname[0] != '\0' && (*intrcnt != 0 || aflag)) {
1328                         unsigned long count, rate;
1329
1330                         count = *intrcnt - *old_intrcnt;
1331                         rate = (count * 1000 + period_ms / 2) / period_ms;
1332                         xo_open_instance("interrupt");
1333                         xo_emit("{d:name/%-*s}{ket:name/%s} "
1334                             "{:total/%20lu} {:rate/%10lu}\n",
1335                             (int)istrnamlen, intrname,
1336                             intrname, count, rate);
1337                         xo_close_instance("interrupt");
1338                 }
1339                 intrname += strlen(intrname) + 1;
1340                 inttotal += *intrcnt++;
1341                 old_inttotal += *old_intrcnt++;
1342         }
1343         total_count = inttotal - old_inttotal;
1344         total_rate = (total_count * 1000 + period_ms / 2) / period_ms;
1345         xo_close_list("interrupt");
1346         xo_emit("{L:/%-*s} {:total-interrupts/%20" PRIu64 "} "
1347                 "{:total-rate/%10" PRIu64 "}\n", (int)istrnamlen,
1348                 "Total", total_count, total_rate);
1349 }
1350
1351 static void
1352 dointr(unsigned int interval, int reps)
1353 {
1354         unsigned long *intrcnts;
1355         long long uptime, period_ms;
1356         unsigned long *old_intrcnts = NULL;
1357         size_t clen, inamlen, istrnamlen;
1358         char *intrnames, *intrname;
1359
1360         uptime = getuptime();
1361
1362         /* Get the names of each interrupt source */
1363         if (kd != NULL) {
1364                 kread(X_SINTRNAMES, &inamlen, sizeof(inamlen));
1365                 if ((intrnames = malloc(inamlen)) == NULL)
1366                         xo_err(1, "malloc()");
1367                 kread(X_INTRNAMES, intrnames, inamlen);
1368         } else {
1369                 for (intrnames = NULL, inamlen = 1024; ; inamlen *= 2) {
1370                         if ((intrnames = reallocf(intrnames, inamlen)) == NULL)
1371                                 xo_err(1, "reallocf()");
1372                         if (mysysctl("hw.intrnames", intrnames, &inamlen) == 0)
1373                                 break;
1374                 }
1375         }
1376
1377         /* Determine the length of the longest interrupt name */
1378         intrname = intrnames;
1379         istrnamlen = strlen("interrupt");
1380         while(*intrname != '\0') {
1381                 clen = strlen(intrname);
1382                 if (clen > istrnamlen)
1383                         istrnamlen = clen;
1384                 intrname += strlen(intrname) + 1;
1385         }
1386         xo_emit("{T:/%-*s} {T:/%20s} {T:/%10s}\n",
1387                 (int)istrnamlen, "interrupt", "total", "rate");
1388
1389         /*
1390          * Loop reps times printing differential interrupt counts.  If reps is
1391          * zero, then run just once, printing total counts
1392          */
1393         xo_open_container("interrupt-statistics");
1394
1395         period_ms = uptime / 1000000;
1396         while(1) {
1397                 unsigned int nintr;
1398                 long long old_uptime;
1399
1400                 nintr = read_intrcnts(&intrcnts);
1401                 /*
1402                  * Initialize old_intrcnts to 0 for the first pass, so
1403                  * print_intrcnts will print total interrupts since boot
1404                  */
1405                 if (old_intrcnts == NULL) {
1406                         old_intrcnts = calloc(nintr, sizeof(unsigned long));
1407                         if (old_intrcnts == NULL)
1408                                 xo_err(1, "calloc()");
1409                 }
1410
1411                 print_intrcnts(intrcnts, old_intrcnts, intrnames, nintr,
1412                     istrnamlen, period_ms);
1413                 xo_flush();
1414
1415                 free(old_intrcnts);
1416                 old_intrcnts = intrcnts;
1417                 if (reps >= 0 && --reps <= 0)
1418                         break;
1419                 usleep(interval * 1000);
1420                 old_uptime = uptime;
1421                 uptime = getuptime();
1422                 period_ms = (uptime - old_uptime) / 1000000;
1423         }
1424
1425         xo_close_container("interrupt-statistics");
1426 }
1427
1428 static void
1429 domemstat_malloc(void)
1430 {
1431         struct memory_type_list *mtlp;
1432         struct memory_type *mtp;
1433         int error, first, i;
1434
1435         mtlp = memstat_mtl_alloc();
1436         if (mtlp == NULL) {
1437                 xo_warn("memstat_mtl_alloc");
1438                 return;
1439         }
1440         if (kd == NULL) {
1441                 if (memstat_sysctl_malloc(mtlp, 0) < 0) {
1442                         xo_warnx("memstat_sysctl_malloc: %s",
1443                             memstat_strerror(memstat_mtl_geterror(mtlp)));
1444                         return;
1445                 }
1446         } else {
1447                 if (memstat_kvm_malloc(mtlp, kd) < 0) {
1448                         error = memstat_mtl_geterror(mtlp);
1449                         if (error == MEMSTAT_ERROR_KVM)
1450                                 xo_warnx("memstat_kvm_malloc: %s",
1451                                     kvm_geterr(kd));
1452                         else
1453                                 xo_warnx("memstat_kvm_malloc: %s",
1454                                     memstat_strerror(error));
1455                 }
1456         }
1457         xo_open_container("malloc-statistics");
1458         xo_emit("{T:/%13s} {T:/%5s} {T:/%6s} {T:/%7s} {T:/%8s}  {T:Size(s)}\n",
1459                 "Type", "InUse", "MemUse", "HighUse", "Requests");
1460         xo_open_list("memory");
1461         for (mtp = memstat_mtl_first(mtlp); mtp != NULL;
1462             mtp = memstat_mtl_next(mtp)) {
1463                 if (memstat_get_numallocs(mtp) == 0 &&
1464                     memstat_get_count(mtp) == 0)
1465                         continue;
1466                 xo_open_instance("memory");
1467                 xo_emit("{k:type/%13s/%s} {:in-use/%5" PRIu64 "} "
1468                         "{:memory-use/%5" PRIu64 "}{U:K} {:high-use/%7s} "
1469                         "{:requests/%8" PRIu64 "}  ",
1470                     memstat_get_name(mtp), memstat_get_count(mtp),
1471                     (memstat_get_bytes(mtp) + 1023) / 1024, "-",
1472                     memstat_get_numallocs(mtp));
1473                 first = 1;
1474                 xo_open_list("size");
1475                 for (i = 0; i < 32; i++) {
1476                         if (memstat_get_sizemask(mtp) & (1 << i)) {
1477                                 if (!first)
1478                                         xo_emit(",");
1479                                 xo_emit("{l:size/%d}", 1 << (i + 4));
1480                                 first = 0;
1481                         }
1482                 }
1483                 xo_close_list("size");
1484                 xo_close_instance("memory");
1485                 xo_emit("\n");
1486         }
1487         xo_close_list("memory");
1488         xo_close_container("malloc-statistics");
1489         memstat_mtl_free(mtlp);
1490 }
1491
1492 static void
1493 domemstat_zone(void)
1494 {
1495         struct memory_type_list *mtlp;
1496         struct memory_type *mtp;
1497         char name[MEMTYPE_MAXNAME + 1];
1498         int error;
1499
1500         mtlp = memstat_mtl_alloc();
1501         if (mtlp == NULL) {
1502                 xo_warn("memstat_mtl_alloc");
1503                 return;
1504         }
1505         if (kd == NULL) {
1506                 if (memstat_sysctl_uma(mtlp, 0) < 0) {
1507                         xo_warnx("memstat_sysctl_uma: %s",
1508                             memstat_strerror(memstat_mtl_geterror(mtlp)));
1509                         return;
1510                 }
1511         } else {
1512                 if (memstat_kvm_uma(mtlp, kd) < 0) {
1513                         error = memstat_mtl_geterror(mtlp);
1514                         if (error == MEMSTAT_ERROR_KVM)
1515                                 xo_warnx("memstat_kvm_uma: %s",
1516                                     kvm_geterr(kd));
1517                         else
1518                                 xo_warnx("memstat_kvm_uma: %s",
1519                                     memstat_strerror(error));
1520                 }
1521         }
1522         xo_open_container("memory-zone-statistics");
1523         xo_emit("{T:/%-20s} {T:/%6s} {T:/%6s} {T:/%8s} {T:/%8s} {T:/%8s} "
1524                 "{T:/%4s} {T:/%4s}\n\n", "ITEM", "SIZE",
1525                 "LIMIT", "USED", "FREE", "REQ", "FAIL", "SLEEP");
1526         xo_open_list("zone");
1527         for (mtp = memstat_mtl_first(mtlp); mtp != NULL;
1528             mtp = memstat_mtl_next(mtp)) {
1529                 strlcpy(name, memstat_get_name(mtp), MEMTYPE_MAXNAME);
1530                 strcat(name, ":");
1531                 xo_open_instance("zone");
1532                 xo_emit("{d:name/%-20s}{ke:name/%s} {:size/%6" PRIu64 "}, "
1533                         "{:limit/%6" PRIu64 "},{:used/%8" PRIu64 "},"
1534                         "{:free/%8" PRIu64 "},{:requests/%8" PRIu64 "},"
1535                         "{:fail/%4" PRIu64 "},{:sleep/%4" PRIu64 "}\n", name,
1536                         memstat_get_name(mtp),
1537                         memstat_get_size(mtp), memstat_get_countlimit(mtp),
1538                         memstat_get_count(mtp), memstat_get_free(mtp),
1539                         memstat_get_numallocs(mtp), memstat_get_failures(mtp),
1540                         memstat_get_sleeps(mtp));
1541                 xo_close_instance("zone");
1542         }
1543         memstat_mtl_free(mtlp);
1544         xo_close_list("zone");
1545         xo_close_container("memory-zone-statistics");
1546         xo_emit("\n");
1547 }
1548
1549 static void
1550 display_object(struct kinfo_vmobject *kvo)
1551 {
1552         const char *str;
1553
1554         xo_open_instance("object");
1555         xo_emit("{:resident/%5jd} ", (uintmax_t)kvo->kvo_resident);
1556         xo_emit("{:active/%5jd} ", (uintmax_t)kvo->kvo_active);
1557         xo_emit("{:inactive/%5jd} ", (uintmax_t)kvo->kvo_inactive);
1558         xo_emit("{:refcount/%3d} ", kvo->kvo_ref_count);
1559         xo_emit("{:shadowcount/%3d} ", kvo->kvo_shadow_count);
1560         switch (kvo->kvo_memattr) {
1561 #ifdef VM_MEMATTR_UNCACHEABLE
1562         case VM_MEMATTR_UNCACHEABLE:
1563                 str = "UC";
1564                 break;
1565 #endif
1566 #ifdef VM_MEMATTR_WRITE_COMBINING
1567         case VM_MEMATTR_WRITE_COMBINING:
1568                 str = "WC";
1569                 break;
1570 #endif
1571 #ifdef VM_MEMATTR_WRITE_THROUGH
1572         case VM_MEMATTR_WRITE_THROUGH:
1573                 str = "WT";
1574                 break;
1575 #endif
1576 #ifdef VM_MEMATTR_WRITE_PROTECTED
1577         case VM_MEMATTR_WRITE_PROTECTED:
1578                 str = "WP";
1579                 break;
1580 #endif
1581 #ifdef VM_MEMATTR_WRITE_BACK
1582         case VM_MEMATTR_WRITE_BACK:
1583                 str = "WB";
1584                 break;
1585 #endif
1586 #ifdef VM_MEMATTR_WEAK_UNCACHEABLE
1587         case VM_MEMATTR_WEAK_UNCACHEABLE:
1588                 str = "UC-";
1589                 break;
1590 #endif
1591 #ifdef VM_MEMATTR_WB_WA
1592         case VM_MEMATTR_WB_WA:
1593                 str = "WB";
1594                 break;
1595 #endif
1596 #ifdef VM_MEMATTR_NOCACHE
1597         case VM_MEMATTR_NOCACHE:
1598                 str = "NC";
1599                 break;
1600 #endif
1601 #ifdef VM_MEMATTR_DEVICE
1602         case VM_MEMATTR_DEVICE:
1603                 str = "DEV";
1604                 break;
1605 #endif
1606 #ifdef VM_MEMATTR_CACHEABLE
1607         case VM_MEMATTR_CACHEABLE:
1608                 str = "C";
1609                 break;
1610 #endif
1611 #ifdef VM_MEMATTR_PREFETCHABLE
1612         case VM_MEMATTR_PREFETCHABLE:
1613                 str = "PRE";
1614                 break;
1615 #endif
1616         default:
1617                 str = "??";
1618                 break;
1619         }
1620         xo_emit("{:attribute/%-3s} ", str);
1621         switch (kvo->kvo_type) {
1622         case KVME_TYPE_NONE:
1623                 str = "--";
1624                 break;
1625         case KVME_TYPE_DEFAULT:
1626                 str = "df";
1627                 break;
1628         case KVME_TYPE_VNODE:
1629                 str = "vn";
1630                 break;
1631         case KVME_TYPE_SWAP:
1632                 str = "sw";
1633                 break;
1634         case KVME_TYPE_DEVICE:
1635                 str = "dv";
1636                 break;
1637         case KVME_TYPE_PHYS:
1638                 str = "ph";
1639                 break;
1640         case KVME_TYPE_DEAD:
1641                 str = "dd";
1642                 break;
1643         case KVME_TYPE_SG:
1644                 str = "sg";
1645                 break;
1646         case KVME_TYPE_MGTDEVICE:
1647                 str = "md";
1648                 break;
1649         case KVME_TYPE_UNKNOWN:
1650         default:
1651                 str = "??";
1652                 break;
1653         }
1654         xo_emit("{:type/%-2s} ", str);
1655         xo_emit("{:path/%-s}\n", kvo->kvo_path);
1656         xo_close_instance("object");
1657 }
1658
1659 static void
1660 doobjstat(void)
1661 {
1662         struct kinfo_vmobject *kvo;
1663         int cnt, i;
1664
1665         kvo = kinfo_getvmobject(&cnt);
1666         if (kvo == NULL) {
1667                 xo_warn("Failed to fetch VM object list");
1668                 return;
1669         }
1670         xo_emit("{T:RES/%5s} {T:ACT/%5s} {T:INACT/%5s} {T:REF/%3s} {T:SHD/%3s} "
1671                 "{T:CM/%3s} {T:TP/%2s} {T:PATH/%s}\n");
1672         xo_open_list("object");
1673         for (i = 0; i < cnt; i++)
1674                 display_object(&kvo[i]);
1675         free(kvo);
1676         xo_close_list("object");
1677 }
1678
1679 /*
1680  * kread reads something from the kernel, given its nlist index.
1681  */
1682 static void
1683 kreado(int nlx, void *addr, size_t size, size_t offset)
1684 {
1685         const char *sym;
1686
1687         if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) {
1688                 sym = namelist[nlx].n_name;
1689                 if (*sym == '_')
1690                         ++sym;
1691                 xo_errx(1, "symbol %s not defined", sym);
1692         }
1693         if ((size_t)kvm_read(kd, namelist[nlx].n_value + offset, addr,
1694             size) != size) {
1695                 sym = namelist[nlx].n_name;
1696                 if (*sym == '_')
1697                         ++sym;
1698                 xo_errx(1, "%s: %s", sym, kvm_geterr(kd));
1699         }
1700 }
1701
1702 static void
1703 kread(int nlx, void *addr, size_t size)
1704 {
1705         kreado(nlx, addr, size, 0);
1706 }
1707
1708 static char *
1709 kgetstr(const char *strp)
1710 {
1711         int n = 0, size = 1;
1712         char *ret = NULL;
1713
1714         do {
1715                 if (size == n + 1) {
1716                         ret = realloc(ret, size);
1717                         if (ret == NULL)
1718                                 xo_err(1, "%s: realloc", __func__);
1719                         size *= 2;
1720                 }
1721                 if (kvm_read(kd, (u_long)strp + n, &ret[n], 1) != 1)
1722                         xo_errx(1, "%s: %s", __func__, kvm_geterr(kd));
1723         } while (ret[n++] != '\0');
1724         return (ret);
1725 }
1726
1727 static void
1728 usage(void)
1729 {
1730         xo_error("%s%s",
1731                 "usage: vmstat [-afHhimoPsz] [-M core [-N system]] [-c count] [-n devs]\n",
1732                 "              [-p type,if,pass] [-w wait] [disks] [wait [count]]\n");
1733         xo_finish();
1734         exit(1);
1735 }