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