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