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