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/vmmeter.h>
  57 #include <sys/pcpu.h>
  58
  59 #include <vm/vm_param.h>
  60
  61 #include <ctype.h>
  62 #include <devstat.h>
  63 #include <err.h>
  64 #include <errno.h>
  65 #include <kvm.h>
  66 #include <limits.h>
  67 #include <memstat.h>
  68 #include <nlist.h>
  69 #include <paths.h>
  70 #include <stdio.h>
  71 #include <stdlib.h>
  72 #include <string.h>
  73 #include <sysexits.h>
  74 #include <time.h>
  75 #include <unistd.h>
  76 #include <libutil.h>
  77
  78 static char da[] = "da";
  79
  80 static struct nlist namelist[] = {
  81 #define X_SUM           0
  82         { "_cnt" },
  83 #define X_BOOTTIME      1
  84         { "_boottime" },
  85 #define X_HZ            2
  86         { "_hz" },
  87 #define X_STATHZ        3
  88         { "_stathz" },
  89 #define X_NCHSTATS      4
  90         { "_nchstats" },
  91 #define X_INTRNAMES     5
  92         { "_intrnames" },
  93 #define X_SINTRNAMES    6
  94         { "_sintrnames" },
  95 #define X_INTRCNT       7
  96         { "_intrcnt" },
  97 #define X_SINTRCNT      8
  98         { "_sintrcnt" },
  99 #define X_KMEMSTATS     9
 100         { "_kmemstatistics" },
 101 #define X_KMEMZONES     10
 102         { "_kmemzones" },
 103 #ifdef notyet
 104 #define X_DEFICIT       XXX
 105         { "_deficit" },
 106 #define X_REC           XXX
 107         { "_rectime" },
 108 #define X_PGIN          XXX
 109         { "_pgintime" },
 110 #define X_XSTATS        XXX
 111         { "_xstats" },
 112 #define X_END           XXX
 113 #else
 114 #define X_END           11
 115 #endif
 116         { "" },
 117 };
 118
 119 static struct statinfo cur, last;
 120 static int num_devices, maxshowdevs;
 121 static long generation;
 122 static struct device_selection *dev_select;
 123 static int num_selected;
 124 static struct devstat_match *matches;
 125 static int num_matches = 0;
 126 static int num_devices_specified, num_selections;
 127 static long select_generation;
 128 static char **specified_devices;
 129 static devstat_select_mode select_mode;
 130
 131 static struct   vmmeter sum, osum;
 132
 133 #define VMSTAT_DEFAULT_LINES    20      /* Default number of `winlines'. */
 134 volatile sig_atomic_t wresized;         /* Tty resized, when non-zero. */
 135 static int winlines = VMSTAT_DEFAULT_LINES; /* Current number of tty rows. */
 136
 137 static int      aflag;
 138 static int      nflag;
 139 static int      Pflag;
 140 static int      hflag;
 141
 142 static kvm_t   *kd;
 143
 144 #define FORKSTAT        0x01
 145 #define INTRSTAT        0x02
 146 #define MEMSTAT         0x04
 147 #define SUMSTAT         0x08
 148 #define TIMESTAT        0x10
 149 #define VMSTAT          0x20
 150 #define ZMEMSTAT        0x40
 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(void);
 157 static void     dosum(void);
 158 static void     dovmstat(unsigned int, int);
 159 static void     domemstat_malloc(void);
 160 static void     domemstat_zone(void);
 161 static void     kread(int, void *, size_t);
 162 static void     kreado(int, void *, size_t, size_t);
 163 static char    *kgetstr(const char *);
 164 static void     needhdr(int);
 165 static void     needresize(int);
 166 static void     doresize(void);
 167 static void     printhdr(int, u_long);
 168 static void     usage(void);
 169
 170 static long     pct(long, long);
 171 static long     getuptime(void);
 172
 173 static char   **getdrivedata(char **);
 174
 175 int
 176 main(int argc, char *argv[])
 177 {
 178         int c, todo;
 179         unsigned int interval;
 180         float f;
 181         int reps;
 182         char *memf, *nlistf;
 183         char errbuf[_POSIX2_LINE_MAX];
 184
 185         memf = nlistf = NULL;
 186         interval = reps = todo = 0;
 187         maxshowdevs = 2;
 188         hflag = isatty(1);
 189         while ((c = getopt(argc, argv, "ac:fhHiM:mN:n:Pp:stw:z")) != -1) {
 190                 switch (c) {
 191                 case 'a':
 192                         aflag++;
 193                         break;
 194                 case 'c':
 195                         reps = atoi(optarg);
 196                         break;
 197                 case 'P':
 198                         Pflag++;
 199                         break;
 200                 case 'f':
 201                         todo |= FORKSTAT;
 202                         break;
 203                 case 'h':
 204                         hflag = 1;
 205                         break;
 206                 case 'H':
 207                         hflag = 0;
 208                         break;
 209                 case 'i':
 210                         todo |= INTRSTAT;
 211                         break;
 212                 case 'M':
 213                         memf = optarg;
 214                         break;
 215                 case 'm':
 216                         todo |= MEMSTAT;
 217                         break;
 218                 case 'N':
 219                         nlistf = optarg;
 220                         break;
 221                 case 'n':
 222                         nflag = 1;
 223                         maxshowdevs = atoi(optarg);
 224                         if (maxshowdevs < 0)
 225                                 errx(1, "number of devices %d is < 0",
 226                                      maxshowdevs);
 227                         break;
 228                 case 'p':
 229                         if (devstat_buildmatch(optarg, &matches, &num_matches) != 0)
 230                                 errx(1, "%s", devstat_errbuf);
 231                         break;
 232                 case 's':
 233                         todo |= SUMSTAT;
 234                         break;
 235                 case 't':
 236 #ifdef notyet
 237                         todo |= TIMESTAT;
 238 #else
 239                         errx(EX_USAGE, "sorry, -t is not (re)implemented yet");
 240 #endif
 241                         break;
 242                 case 'w':
 243                         /* Convert to milliseconds. */
 244                         f = atof(optarg);
 245                         interval = f * 1000;
 246                         break;
 247                 case 'z':
 248                         todo |= ZMEMSTAT;
 249                         break;
 250                 case '?':
 251                 default:
 252                         usage();
 253                 }
 254         }
 255         argc -= optind;
 256         argv += optind;
 257
 258         if (todo == 0)
 259                 todo = VMSTAT;
 260
 261         if (memf != NULL) {
 262                 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
 263                 if (kd == NULL)
 264                         errx(1, "kvm_openfiles: %s", errbuf);
 265         }
 266
 267         if (kd != NULL && (c = kvm_nlist(kd, namelist)) != 0) {
 268                 if (c > 0) {
 269                         warnx("undefined symbols:");
 270                         for (c = 0;
 271                              c < (int)(sizeof(namelist)/sizeof(namelist[0]));
 272                              c++)
 273                                 if (namelist[c].n_type == 0)
 274                                         (void)fprintf(stderr, " %s",
 275                                             namelist[c].n_name);
 276                         (void)fputc('\n', stderr);
 277                 } else
 278                         warnx("kvm_nlist: %s", kvm_geterr(kd));
 279                 exit(1);
 280         }
 281         if (kd && Pflag)
 282                 errx(1, "Cannot use -P with crash dumps");
 283
 284         if (todo & VMSTAT) {
 285                 /*
 286                  * Make sure that the userland devstat version matches the
 287                  * kernel devstat version.  If not, exit and print a
 288                  * message informing the user of his mistake.
 289                  */
 290                 if (devstat_checkversion(NULL) < 0)
 291                         errx(1, "%s", devstat_errbuf);
 292
 293
 294                 argv = getdrivedata(argv);
 295         }
 296
 297 #define BACKWARD_COMPATIBILITY
 298 #ifdef  BACKWARD_COMPATIBILITY
 299         if (*argv) {
 300                 f = atof(*argv);
 301                 interval = f * 1000;
 302                 if (*++argv)
 303                         reps = atoi(*argv);
 304         }
 305 #endif
 306
 307         if (interval) {
 308                 if (!reps)
 309                         reps = -1;
 310         } else if (reps)
 311                 interval = 1 * 1000;
 312
 313         if (todo & FORKSTAT)
 314                 doforkst();
 315         if (todo & MEMSTAT)
 316                 domemstat_malloc();
 317         if (todo & ZMEMSTAT)
 318                 domemstat_zone();
 319         if (todo & SUMSTAT)
 320                 dosum();
 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_cow_faults);
 478                         ADD_FROM_PCPU(i, v_cow_optim);
 479                         ADD_FROM_PCPU(i, v_zfod);
 480                         ADD_FROM_PCPU(i, v_ozfod);
 481                         ADD_FROM_PCPU(i, v_swapin);
 482                         ADD_FROM_PCPU(i, v_swapout);
 483                         ADD_FROM_PCPU(i, v_swappgsin);
 484                         ADD_FROM_PCPU(i, v_swappgsout);
 485                         ADD_FROM_PCPU(i, v_vnodein);
 486                         ADD_FROM_PCPU(i, v_vnodeout);
 487                         ADD_FROM_PCPU(i, v_vnodepgsin);
 488                         ADD_FROM_PCPU(i, v_vnodepgsout);
 489                         ADD_FROM_PCPU(i, v_intrans);
 490                         ADD_FROM_PCPU(i, v_tfree);
 491                         ADD_FROM_PCPU(i, v_forks);
 492                         ADD_FROM_PCPU(i, v_vforks);
 493                         ADD_FROM_PCPU(i, v_rforks);
 494                         ADD_FROM_PCPU(i, v_kthreads);
 495                         ADD_FROM_PCPU(i, v_forkpages);
 496                         ADD_FROM_PCPU(i, v_vforkpages);
 497                         ADD_FROM_PCPU(i, v_rforkpages);
 498                         ADD_FROM_PCPU(i, v_kthreadpages);
 499 #undef ADD_FROM_PCPU
 500                 }
 501                 free_pcpu(pcpu, maxcpu);
 502         } else {
 503                 size_t size = sizeof(unsigned int);
 504 #define GET_VM_STATS(cat, name) \
 505         mysysctl("vm.stats." #cat "." #name, &vmmp->name, &size, NULL, 0)
 506                 /* sys */
 507                 GET_VM_STATS(sys, v_swtch);
 508                 GET_VM_STATS(sys, v_trap);
 509                 GET_VM_STATS(sys, v_syscall);
 510                 GET_VM_STATS(sys, v_intr);
 511                 GET_VM_STATS(sys, v_soft);
 512
 513                 /* vm */
 514                 GET_VM_STATS(vm, v_vm_faults);
 515                 GET_VM_STATS(vm, v_cow_faults);
 516                 GET_VM_STATS(vm, v_cow_optim);
 517                 GET_VM_STATS(vm, v_zfod);
 518                 GET_VM_STATS(vm, v_ozfod);
 519                 GET_VM_STATS(vm, v_swapin);
 520                 GET_VM_STATS(vm, v_swapout);
 521                 GET_VM_STATS(vm, v_swappgsin);
 522                 GET_VM_STATS(vm, v_swappgsout);
 523                 GET_VM_STATS(vm, v_vnodein);
 524                 GET_VM_STATS(vm, v_vnodeout);
 525                 GET_VM_STATS(vm, v_vnodepgsin);
 526                 GET_VM_STATS(vm, v_vnodepgsout);
 527                 GET_VM_STATS(vm, v_intrans);
 528                 GET_VM_STATS(vm, v_reactivated);
 529                 GET_VM_STATS(vm, v_pdwakeups);
 530                 GET_VM_STATS(vm, v_pdpages);
 531                 GET_VM_STATS(vm, v_tcached);
 532                 GET_VM_STATS(vm, v_dfree);
 533                 GET_VM_STATS(vm, v_pfree);
 534                 GET_VM_STATS(vm, v_tfree);
 535                 GET_VM_STATS(vm, v_page_size);
 536                 GET_VM_STATS(vm, v_page_count);
 537                 GET_VM_STATS(vm, v_free_reserved);
 538                 GET_VM_STATS(vm, v_free_target);
 539                 GET_VM_STATS(vm, v_free_min);
 540                 GET_VM_STATS(vm, v_free_count);
 541                 GET_VM_STATS(vm, v_wire_count);
 542                 GET_VM_STATS(vm, v_active_count);
 543                 GET_VM_STATS(vm, v_inactive_target);
 544                 GET_VM_STATS(vm, v_inactive_count);
 545                 GET_VM_STATS(vm, v_cache_count);
 546                 GET_VM_STATS(vm, v_cache_min);
 547                 GET_VM_STATS(vm, v_cache_max);
 548                 GET_VM_STATS(vm, v_pageout_free_min);
 549                 GET_VM_STATS(vm, v_interrupt_free_min);
 550                 /*GET_VM_STATS(vm, v_free_severe);*/
 551                 GET_VM_STATS(vm, v_forks);
 552                 GET_VM_STATS(vm, v_vforks);
 553                 GET_VM_STATS(vm, v_rforks);
 554                 GET_VM_STATS(vm, v_kthreads);
 555                 GET_VM_STATS(vm, v_forkpages);
 556                 GET_VM_STATS(vm, v_vforkpages);
 557                 GET_VM_STATS(vm, v_rforkpages);
 558                 GET_VM_STATS(vm, v_kthreadpages);
 559 #undef GET_VM_STATS
 560         }
 561 }
 562
 563 static void
 564 fill_vmtotal(struct vmtotal *vmtp)
 565 {
 566         if (kd != NULL) {
 567                 /* XXX fill vmtp */
 568                 errx(1, "not implemented");
 569         } else {
 570                 size_t size = sizeof(*vmtp);
 571                 mysysctl("vm.vmtotal", vmtp, &size, NULL, 0);
 572                 if (size != sizeof(*vmtp))
 573                         errx(1, "vm.total size mismatch");
 574         }
 575 }
 576
 577 /* Determine how many cpu columns, and what index they are in kern.cp_times */
 578 static int
 579 getcpuinfo(u_long *maskp, int *maxidp)
 580 {
 581         int maxcpu;
 582         int maxid;
 583         int ncpus;
 584         int i, j;
 585         int empty;
 586         size_t size;
 587         long *times;
 588         u_long mask;
 589
 590         if (kd != NULL)
 591                 errx(1, "not implemented");
 592         mask = 0;
 593         ncpus = 0;
 594         size = sizeof(maxcpu);
 595         mysysctl("kern.smp.maxcpus", &maxcpu, &size, NULL, 0);
 596         if (size != sizeof(maxcpu))
 597                 errx(1, "sysctl kern.smp.maxcpus");
 598         size = sizeof(long) * maxcpu * CPUSTATES;
 599         times = malloc(size);
 600         if (times == NULL)
 601                 err(1, "malloc %zd bytes", size);
 602         mysysctl("kern.cp_times", times, &size, NULL, 0);
 603         maxid = (size / CPUSTATES / sizeof(long)) - 1;
 604         for (i = 0; i <= maxid; i++) {
 605                 empty = 1;
 606                 for (j = 0; empty && j < CPUSTATES; j++) {
 607                         if (times[i * CPUSTATES + j] != 0)
 608                                 empty = 0;
 609                 }
 610                 if (!empty) {
 611                         mask |= (1ul << i);
 612                         ncpus++;
 613                 }
 614         }
 615         if (maskp)
 616                 *maskp = mask;
 617         if (maxidp)
 618                 *maxidp = maxid;
 619         return (ncpus);
 620 }
 621
 622
 623 static void
 624 prthuman(u_int64_t val, int size)
 625 {
 626         char buf[10];
 627         int flags;
 628
 629         if (size < 5 || size > 9)
 630                 errx(1, "doofus");
 631         flags = HN_B | HN_NOSPACE | HN_DECIMAL;
 632         humanize_number(buf, size, val, "", HN_AUTOSCALE, flags);
 633         printf("%*s", size, buf);
 634 }
 635
 636 static int hz, hdrcnt;
 637
 638 static long *cur_cp_times;
 639 static long *last_cp_times;
 640 static size_t size_cp_times;
 641
 642 static void
 643 dovmstat(unsigned int interval, int reps)
 644 {
 645         struct vmtotal total;
 646         time_t uptime, halfuptime;
 647         struct devinfo *tmp_dinfo;
 648         size_t size;
 649         int ncpus, maxid;
 650         u_long cpumask;
 651         int rate_adj;
 652
 653         uptime = getuptime();
 654         halfuptime = uptime / 2;
 655         rate_adj = 1;
 656
 657         /*
 658          * If the user stops the program (control-Z) and then resumes it,
 659          * print out the header again.
 660          */
 661         (void)signal(SIGCONT, needhdr);
 662
 663         /*
 664          * If our standard output is a tty, then install a SIGWINCH handler
 665          * and set wresized so that our first iteration through the main
 666          * vmstat loop will peek at the terminal's current rows to find out
 667          * how many lines can fit in a screenful of output.
 668          */
 669         if (isatty(fileno(stdout)) != 0) {
 670                 wresized = 1;
 671                 (void)signal(SIGWINCH, needresize);
 672         } else {
 673                 wresized = 0;
 674                 winlines = VMSTAT_DEFAULT_LINES;
 675         }
 676
 677         if (kd != NULL) {
 678                 if (namelist[X_STATHZ].n_type != 0 &&
 679                     namelist[X_STATHZ].n_value != 0)
 680                         kread(X_STATHZ, &hz, sizeof(hz));
 681                 if (!hz)
 682                         kread(X_HZ, &hz, sizeof(hz));
 683         } else {
 684                 struct clockinfo clockrate;
 685
 686                 size = sizeof(clockrate);
 687                 mysysctl("kern.clockrate", &clockrate, &size, NULL, 0);
 688                 if (size != sizeof(clockrate))
 689                         errx(1, "clockrate size mismatch");
 690                 hz = clockrate.hz;
 691         }
 692
 693         if (Pflag) {
 694                 ncpus = getcpuinfo(&cpumask, &maxid);
 695                 size_cp_times = sizeof(long) * (maxid + 1) * CPUSTATES;
 696                 cur_cp_times = calloc(1, size_cp_times);
 697                 last_cp_times = calloc(1, size_cp_times);
 698         }
 699         for (hdrcnt = 1;;) {
 700                 if (!--hdrcnt)
 701                         printhdr(ncpus, cpumask);
 702                 if (kd != NULL) {
 703                         if (kvm_getcptime(kd, cur.cp_time) < 0)
 704                                 errx(1, "kvm_getcptime: %s", kvm_geterr(kd));
 705                 } else {
 706                         size = sizeof(cur.cp_time);
 707                         mysysctl("kern.cp_time", &cur.cp_time, &size, NULL, 0);
 708                         if (size != sizeof(cur.cp_time))
 709                                 errx(1, "cp_time size mismatch");
 710                 }
 711                 if (Pflag) {
 712                         size = size_cp_times;
 713                         mysysctl("kern.cp_times", cur_cp_times, &size, NULL, 0);
 714                         if (size != size_cp_times)
 715                                 errx(1, "cp_times mismatch");
 716                 }
 717
 718                 tmp_dinfo = last.dinfo;
 719                 last.dinfo = cur.dinfo;
 720                 cur.dinfo = tmp_dinfo;
 721                 last.snap_time = cur.snap_time;
 722
 723                 /*
 724                  * Here what we want to do is refresh our device stats.
 725                  * getdevs() returns 1 when the device list has changed.
 726                  * If the device list has changed, we want to go through
 727                  * the selection process again, in case a device that we
 728                  * were previously displaying has gone away.
 729                  */
 730                 switch (devstat_getdevs(NULL, &cur)) {
 731                 case -1:
 732                         errx(1, "%s", devstat_errbuf);
 733                         break;
 734                 case 1: {
 735                         int retval;
 736
 737                         num_devices = cur.dinfo->numdevs;
 738                         generation = cur.dinfo->generation;
 739
 740                         retval = devstat_selectdevs(&dev_select, &num_selected,
 741                                             &num_selections, &select_generation,
 742                                             generation, cur.dinfo->devices,
 743                                             num_devices, matches, num_matches,
 744                                             specified_devices,
 745                                             num_devices_specified, select_mode,
 746                                             maxshowdevs, 0);
 747                         switch (retval) {
 748                         case -1:
 749                                 errx(1, "%s", devstat_errbuf);
 750                                 break;
 751                         case 1:
 752                                 printhdr(ncpus, cpumask);
 753                                 break;
 754                         default:
 755                                 break;
 756                         }
 757                 }
 758                 default:
 759                         break;
 760                 }
 761
 762                 fill_vmmeter(&sum);
 763                 fill_vmtotal(&total);
 764                 (void)printf("%2d %1d %1d",
 765                     total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw);
 766 #define vmstat_pgtok(a) ((a) * (sum.v_page_size >> 10))
 767 #define rate(x) (((x) * rate_adj + halfuptime) / uptime)        /* round */
 768                 if (hflag) {
 769                         printf(" ");
 770                         prthuman(total.t_avm * (u_int64_t)sum.v_page_size, 7);
 771                         printf(" ");
 772                         prthuman(total.t_free * (u_int64_t)sum.v_page_size, 6);
 773                         printf(" ");
 774                 } else {
 775                         printf(" %7d ", vmstat_pgtok(total.t_avm));
 776                         printf(" %6d ", vmstat_pgtok(total.t_free));
 777                 }
 778                 (void)printf("%5lu ",
 779                     (unsigned long)rate(sum.v_vm_faults - osum.v_vm_faults));
 780                 (void)printf("%3lu ",
 781                     (unsigned long)rate(sum.v_reactivated - osum.v_reactivated));
 782                 (void)printf("%3lu ",
 783                     (unsigned long)rate(sum.v_swapin + sum.v_vnodein -
 784                     (osum.v_swapin + osum.v_vnodein)));
 785                 (void)printf("%3lu ",
 786                     (unsigned long)rate(sum.v_swapout + sum.v_vnodeout -
 787                     (osum.v_swapout + osum.v_vnodeout)));
 788                 (void)printf("%5lu ",
 789                     (unsigned long)rate(sum.v_tfree - osum.v_tfree));
 790                 (void)printf("%3lu ",
 791                     (unsigned long)rate(sum.v_pdpages - osum.v_pdpages));
 792                 devstats();
 793                 (void)printf("%4lu %4lu %4lu",
 794                     (unsigned long)rate(sum.v_intr - osum.v_intr),
 795                     (unsigned long)rate(sum.v_syscall - osum.v_syscall),
 796                     (unsigned long)rate(sum.v_swtch - osum.v_swtch));
 797                 if (Pflag)
 798                         pcpustats(ncpus, cpumask, maxid);
 799                 else
 800                         cpustats();
 801                 (void)printf("\n");
 802                 (void)fflush(stdout);
 803                 if (reps >= 0 && --reps <= 0)
 804                         break;
 805                 osum = sum;
 806                 uptime = interval;
 807                 rate_adj = 1000;
 808                 /*
 809                  * We round upward to avoid losing low-frequency events
 810                  * (i.e., >= 1 per interval but < 1 per millisecond).
 811                  */
 812                 if (interval != 1)
 813                         halfuptime = (uptime + 1) / 2;
 814                 else
 815                         halfuptime = 0;
 816                 (void)usleep(interval * 1000);
 817         }
 818 }
 819
 820 static void
 821 printhdr(int ncpus, u_long cpumask)
 822 {
 823         int i, num_shown;
 824
 825         num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs;
 826         (void)printf(" procs      memory      page%*s", 19, "");
 827         if (num_shown > 1)
 828                 (void)printf(" disks %*s", num_shown * 4 - 7, "");
 829         else if (num_shown == 1)
 830                 (void)printf("disk");
 831         (void)printf("   faults         ");
 832         if (Pflag) {
 833                 for (i = 0; i < ncpus; i++) {
 834                         if (cpumask & (1ul << i))
 835                                 printf("cpu%-2d    ", i);
 836                 }
 837                 printf("\n");
 838         } else
 839                 printf("cpu\n");
 840         (void)printf(" r b w     avm    fre   flt  re  pi  po    fr  sr ");
 841         for (i = 0; i < num_devices; i++)
 842                 if ((dev_select[i].selected)
 843                  && (dev_select[i].selected <= maxshowdevs))
 844                         (void)printf("%c%c%d ", dev_select[i].device_name[0],
 845                                      dev_select[i].device_name[1],
 846                                      dev_select[i].unit_number);
 847         (void)printf("  in   sy   cs");
 848         if (Pflag) {
 849                 for (i = 0; i < ncpus; i++)
 850                         printf(" us sy id");
 851                 printf("\n");
 852         } else
 853                 printf(" us sy id\n");
 854         if (wresized != 0)
 855                 doresize();
 856         hdrcnt = winlines;
 857 }
 858
 859 /*
 860  * Force a header to be prepended to the next output.
 861  */
 862 static void
 863 needhdr(int dummy __unused)
 864 {
 865
 866         hdrcnt = 1;
 867 }
 868
 869 /*
 870  * When the terminal is resized, force an update of the maximum number of rows
 871  * printed between each header repetition.  Then force a new header to be
 872  * prepended to the next output.
 873  */
 874 void
 875 needresize(int signo)
 876 {
 877
 878         wresized = 1;
 879         hdrcnt = 1;
 880 }
 881
 882 /*
 883  * Update the global `winlines' count of terminal rows.
 884  */
 885 void
 886 doresize(void)
 887 {
 888         int status;
 889         struct winsize w;
 890
 891         for (;;) {
 892                 status = ioctl(fileno(stdout), TIOCGWINSZ, &w);
 893                 if (status == -1 && errno == EINTR)
 894                         continue;
 895                 else if (status == -1)
 896                         err(1, "ioctl");
 897                 if (w.ws_row > 3)
 898                         winlines = w.ws_row - 3;
 899                 else
 900                         winlines = VMSTAT_DEFAULT_LINES;
 901                 break;
 902         }
 903
 904         /*
 905          * Inhibit doresize() calls until we are rescheduled by SIGWINCH.
 906          */
 907         wresized = 0;
 908 }
 909
 910 #ifdef notyet
 911 static void
 912 dotimes(void)
 913 {
 914         unsigned int pgintime, rectime;
 915
 916         kread(X_REC, &rectime, sizeof(rectime));
 917         kread(X_PGIN, &pgintime, sizeof(pgintime));
 918         kread(X_SUM, &sum, sizeof(sum));
 919         (void)printf("%u reclaims, %u total time (usec)\n",
 920             sum.v_pgrec, rectime);
 921         (void)printf("average: %u usec / reclaim\n", rectime / sum.v_pgrec);
 922         (void)printf("\n");
 923         (void)printf("%u page ins, %u total time (msec)\n",
 924             sum.v_pgin, pgintime / 10);
 925         (void)printf("average: %8.1f msec / page in\n",
 926             pgintime / (sum.v_pgin * 10.0));
 927 }
 928 #endif
 929
 930 static long
 931 pct(long top, long bot)
 932 {
 933         long ans;
 934
 935         if (bot == 0)
 936                 return(0);
 937         ans = (quad_t)top * 100 / bot;
 938         return (ans);
 939 }
 940
 941 #define PCT(top, bot) pct((long)(top), (long)(bot))
 942
 943 static void
 944 dosum(void)
 945 {
 946         struct nchstats lnchstats;
 947         long nchtotal;
 948
 949         fill_vmmeter(&sum);
 950         (void)printf("%9u cpu context switches\n", sum.v_swtch);
 951         (void)printf("%9u device interrupts\n", sum.v_intr);
 952         (void)printf("%9u software interrupts\n", sum.v_soft);
 953         (void)printf("%9u traps\n", sum.v_trap);
 954         (void)printf("%9u system calls\n", sum.v_syscall);
 955         (void)printf("%9u kernel threads created\n", sum.v_kthreads);
 956         (void)printf("%9u  fork() calls\n", sum.v_forks);
 957         (void)printf("%9u vfork() calls\n", sum.v_vforks);
 958         (void)printf("%9u rfork() calls\n", sum.v_rforks);
 959         (void)printf("%9u swap pager pageins\n", sum.v_swapin);
 960         (void)printf("%9u swap pager pages paged in\n", sum.v_swappgsin);
 961         (void)printf("%9u swap pager pageouts\n", sum.v_swapout);
 962         (void)printf("%9u swap pager pages paged out\n", sum.v_swappgsout);
 963         (void)printf("%9u vnode pager pageins\n", sum.v_vnodein);
 964         (void)printf("%9u vnode pager pages paged in\n", sum.v_vnodepgsin);
 965         (void)printf("%9u vnode pager pageouts\n", sum.v_vnodeout);
 966         (void)printf("%9u vnode pager pages paged out\n", sum.v_vnodepgsout);
 967         (void)printf("%9u page daemon wakeups\n", sum.v_pdwakeups);
 968         (void)printf("%9u pages examined by the page daemon\n", sum.v_pdpages);
 969         (void)printf("%9u pages reactivated\n", sum.v_reactivated);
 970         (void)printf("%9u copy-on-write faults\n", sum.v_cow_faults);
 971         (void)printf("%9u copy-on-write optimized faults\n", sum.v_cow_optim);
 972         (void)printf("%9u zero fill pages zeroed\n", sum.v_zfod);
 973         (void)printf("%9u zero fill pages prezeroed\n", sum.v_ozfod);
 974         (void)printf("%9u intransit blocking page faults\n", sum.v_intrans);
 975         (void)printf("%9u total VM faults taken\n", sum.v_vm_faults);
 976         (void)printf("%9u pages affected by kernel thread creation\n", sum.v_kthreadpages);
 977         (void)printf("%9u pages affected by  fork()\n", sum.v_forkpages);
 978         (void)printf("%9u pages affected by vfork()\n", sum.v_vforkpages);
 979         (void)printf("%9u pages affected by rfork()\n", sum.v_rforkpages);
 980         (void)printf("%9u pages cached\n", sum.v_tcached);
 981         (void)printf("%9u pages freed\n", sum.v_tfree);
 982         (void)printf("%9u pages freed by daemon\n", sum.v_dfree);
 983         (void)printf("%9u pages freed by exiting processes\n", sum.v_pfree);
 984         (void)printf("%9u pages active\n", sum.v_active_count);
 985         (void)printf("%9u pages inactive\n", sum.v_inactive_count);
 986         (void)printf("%9u pages in VM cache\n", sum.v_cache_count);
 987         (void)printf("%9u pages wired down\n", sum.v_wire_count);
 988         (void)printf("%9u pages free\n", sum.v_free_count);
 989         (void)printf("%9u bytes per page\n", sum.v_page_size);
 990         if (kd != NULL) {
 991                 kread(X_NCHSTATS, &lnchstats, sizeof(lnchstats));
 992         } else {
 993                 size_t size = sizeof(lnchstats);
 994                 mysysctl("vfs.cache.nchstats", &lnchstats, &size, NULL, 0);
 995                 if (size != sizeof(lnchstats))
 996                         errx(1, "vfs.cache.nchstats size mismatch");
 997         }
 998         nchtotal = lnchstats.ncs_goodhits + lnchstats.ncs_neghits +
 999             lnchstats.ncs_badhits + lnchstats.ncs_falsehits +
1000             lnchstats.ncs_miss + lnchstats.ncs_long;
1001         (void)printf("%9ld total name lookups\n", nchtotal);
1002         (void)printf(
1003             "%9s cache hits (%ld%% pos + %ld%% neg) system %ld%% per-directory\n",
1004             "", PCT(lnchstats.ncs_goodhits, nchtotal),
1005             PCT(lnchstats.ncs_neghits, nchtotal),
1006             PCT(lnchstats.ncs_pass2, nchtotal));
1007         (void)printf("%9s deletions %ld%%, falsehits %ld%%, toolong %ld%%\n", "",
1008             PCT(lnchstats.ncs_badhits, nchtotal),
1009             PCT(lnchstats.ncs_falsehits, nchtotal),
1010             PCT(lnchstats.ncs_long, nchtotal));
1011 }
1012
1013 static void
1014 doforkst(void)
1015 {
1016         fill_vmmeter(&sum);
1017         (void)printf("%u forks, %u pages, average %.2f\n",
1018             sum.v_forks, sum.v_forkpages,
1019             sum.v_forks == 0 ? 0.0 :
1020             (double)sum.v_forkpages / sum.v_forks);
1021         (void)printf("%u vforks, %u pages, average %.2f\n",
1022             sum.v_vforks, sum.v_vforkpages,
1023             sum.v_vforks == 0 ? 0.0 :
1024             (double)sum.v_vforkpages / sum.v_vforks);
1025         (void)printf("%u rforks, %u pages, average %.2f\n",
1026             sum.v_rforks, sum.v_rforkpages,
1027             sum.v_rforks == 0 ? 0.0 :
1028             (double)sum.v_rforkpages / sum.v_rforks);
1029 }
1030
1031 static void
1032 devstats(void)
1033 {
1034         int dn, state;
1035         long double transfers_per_second;
1036         long double busy_seconds;
1037         long tmp;
1038
1039         for (state = 0; state < CPUSTATES; ++state) {
1040                 tmp = cur.cp_time[state];
1041                 cur.cp_time[state] -= last.cp_time[state];
1042                 last.cp_time[state] = tmp;
1043         }
1044
1045         busy_seconds = cur.snap_time - last.snap_time;
1046
1047         for (dn = 0; dn < num_devices; dn++) {
1048                 int di;
1049
1050                 if ((dev_select[dn].selected == 0)
1051                  || (dev_select[dn].selected > maxshowdevs))
1052                         continue;
1053
1054                 di = dev_select[dn].position;
1055
1056                 if (devstat_compute_statistics(&cur.dinfo->devices[di],
1057                     &last.dinfo->devices[di], busy_seconds,
1058                     DSM_TRANSFERS_PER_SECOND, &transfers_per_second,
1059                     DSM_NONE) != 0)
1060                         errx(1, "%s", devstat_errbuf);
1061
1062                 (void)printf("%3.0Lf ", transfers_per_second);
1063         }
1064 }
1065
1066 static void
1067 percent(double pct, int *over)
1068 {
1069         char buf[10];
1070         int l;
1071
1072         l = snprintf(buf, sizeof(buf), "%.0f", pct);
1073         if (l == 1 && *over) {
1074                 printf("%s",  buf);
1075                 (*over)--;
1076         } else
1077                 printf("%2s", buf);
1078         if (l > 2)
1079                 (*over)++;
1080 }
1081
1082 static void
1083 cpustats(void)
1084 {
1085         int state, over;
1086         double lpct, total;
1087
1088         total = 0;
1089         for (state = 0; state < CPUSTATES; ++state)
1090                 total += cur.cp_time[state];
1091         if (total)
1092                 lpct = 100.0 / total;
1093         else
1094                 lpct = 0.0;
1095         over = 0;
1096         printf(" ");
1097         percent((cur.cp_time[CP_USER] + cur.cp_time[CP_NICE]) * lpct, &over);
1098         printf(" ");
1099         percent((cur.cp_time[CP_SYS] + cur.cp_time[CP_INTR]) * lpct, &over);
1100         printf(" ");
1101         percent(cur.cp_time[CP_IDLE] * lpct, &over);
1102 }
1103
1104 static void
1105 pcpustats(int ncpus, u_long cpumask, int maxid)
1106 {
1107         int state, i;
1108         double lpct, total;
1109         long tmp;
1110         int over;
1111
1112         /* devstats does this for cp_time */
1113         for (i = 0; i <= maxid; i++) {
1114                 if ((cpumask & (1ul << i)) == 0)
1115                         continue;
1116                 for (state = 0; state < CPUSTATES; ++state) {
1117                         tmp = cur_cp_times[i * CPUSTATES + state];
1118                         cur_cp_times[i * CPUSTATES + state] -= last_cp_times[i * CPUSTATES + state];
1119                         last_cp_times[i * CPUSTATES + state] = tmp;
1120                 }
1121         }
1122
1123         over = 0;
1124         for (i = 0; i <= maxid; i++) {
1125                 if ((cpumask & (1ul << i)) == 0)
1126                         continue;
1127                 total = 0;
1128                 for (state = 0; state < CPUSTATES; ++state)
1129                         total += cur_cp_times[i * CPUSTATES + state];
1130                 if (total)
1131                         lpct = 100.0 / total;
1132                 else
1133                         lpct = 0.0;
1134                 printf(" ");
1135                 percent((cur_cp_times[i * CPUSTATES + CP_USER] +
1136                          cur_cp_times[i * CPUSTATES + CP_NICE]) * lpct, &over);
1137                 printf(" ");
1138                 percent((cur_cp_times[i * CPUSTATES + CP_SYS] +
1139                          cur_cp_times[i * CPUSTATES + CP_INTR]) * lpct, &over);
1140                 printf(" ");
1141                 percent(cur_cp_times[i * CPUSTATES + CP_IDLE] * lpct, &over);
1142         }
1143 }
1144
1145 static void
1146 dointr(void)
1147 {
1148         unsigned long *intrcnt, uptime;
1149         uint64_t inttotal;
1150         size_t clen, inamlen, intrcntlen, istrnamlen;
1151         unsigned int i, nintr;
1152         char *intrname, *tintrname;
1153
1154         uptime = getuptime();
1155         if (kd != NULL) {
1156                 kread(X_SINTRCNT, &intrcntlen, sizeof(intrcntlen));
1157                 kread(X_SINTRNAMES, &inamlen, sizeof(inamlen));
1158                 if ((intrcnt = malloc(intrcntlen)) == NULL ||
1159                     (intrname = malloc(inamlen)) == NULL)
1160                         err(1, "malloc()");
1161                 kread(X_INTRCNT, intrcnt, intrcntlen);
1162                 kread(X_INTRNAMES, intrname, inamlen);
1163         } else {
1164                 for (intrcnt = NULL, intrcntlen = 1024; ; intrcntlen *= 2) {
1165                         if ((intrcnt = reallocf(intrcnt, intrcntlen)) == NULL)
1166                                 err(1, "reallocf()");
1167                         if (mysysctl("hw.intrcnt",
1168                             intrcnt, &intrcntlen, NULL, 0) == 0)
1169                                 break;
1170                 }
1171                 for (intrname = NULL, inamlen = 1024; ; inamlen *= 2) {
1172                         if ((intrname = reallocf(intrname, inamlen)) == NULL)
1173                                 err(1, "reallocf()");
1174                         if (mysysctl("hw.intrnames",
1175                             intrname, &inamlen, NULL, 0) == 0)
1176                                 break;
1177                 }
1178         }
1179         nintr = intrcntlen / sizeof(unsigned long);
1180         tintrname = intrname;
1181         istrnamlen = strlen("interrupt");
1182         for (i = 0; i < nintr; i++) {
1183                 clen = strlen(tintrname);
1184                 if (clen > istrnamlen)
1185                         istrnamlen = clen;
1186                 tintrname += clen + 1;
1187         }
1188         (void)printf("%-*s %20s %10s\n", istrnamlen, "interrupt", "total",
1189             "rate");
1190         inttotal = 0;
1191         for (i = 0; i < nintr; i++) {
1192                 if (intrname[0] != '\0' && (*intrcnt != 0 || aflag))
1193                         (void)printf("%-*s %20lu %10lu\n", istrnamlen, intrname,
1194                             *intrcnt, *intrcnt / uptime);
1195                 intrname += strlen(intrname) + 1;
1196                 inttotal += *intrcnt++;
1197         }
1198         (void)printf("%-*s %20llu %10llu\n", istrnamlen, "Total",
1199             (long long)inttotal, (long long)(inttotal / uptime));
1200 }
1201
1202 static void
1203 domemstat_malloc(void)
1204 {
1205         struct memory_type_list *mtlp;
1206         struct memory_type *mtp;
1207         int error, first, i;
1208
1209         mtlp = memstat_mtl_alloc();
1210         if (mtlp == NULL) {
1211                 warn("memstat_mtl_alloc");
1212                 return;
1213         }
1214         if (kd == NULL) {
1215                 if (memstat_sysctl_malloc(mtlp, 0) < 0) {
1216                         warnx("memstat_sysctl_malloc: %s",
1217                             memstat_strerror(memstat_mtl_geterror(mtlp)));
1218                         return;
1219                 }
1220         } else {
1221                 if (memstat_kvm_malloc(mtlp, kd) < 0) {
1222                         error = memstat_mtl_geterror(mtlp);
1223                         if (error == MEMSTAT_ERROR_KVM)
1224                                 warnx("memstat_kvm_malloc: %s",
1225                                     kvm_geterr(kd));
1226                         else
1227                                 warnx("memstat_kvm_malloc: %s",
1228                                     memstat_strerror(error));
1229                 }
1230         }
1231         printf("%13s %5s %6s %7s %8s  Size(s)\n", "Type", "InUse", "MemUse",
1232             "HighUse", "Requests");
1233         for (mtp = memstat_mtl_first(mtlp); mtp != NULL;
1234             mtp = memstat_mtl_next(mtp)) {
1235                 if (memstat_get_numallocs(mtp) == 0 &&
1236                     memstat_get_count(mtp) == 0)
1237                         continue;
1238                 printf("%13s %5lld %5lldK %7s %8lld  ",
1239                     memstat_get_name(mtp), memstat_get_count(mtp),
1240                     ((int64_t)memstat_get_bytes(mtp) + 1023) / 1024, "-",
1241                     memstat_get_numallocs(mtp));
1242                 first = 1;
1243                 for (i = 0; i < 32; i++) {
1244                         if (memstat_get_sizemask(mtp) & (1 << i)) {
1245                                 if (!first)
1246                                         printf(",");
1247                                 printf("%d", 1 << (i + 4));
1248                                 first = 0;
1249                         }
1250                 }
1251                 printf("\n");
1252         }
1253         memstat_mtl_free(mtlp);
1254 }
1255
1256 static void
1257 domemstat_zone(void)
1258 {
1259         struct memory_type_list *mtlp;
1260         struct memory_type *mtp;
1261         char name[MEMTYPE_MAXNAME + 1];
1262         int error;
1263
1264         mtlp = memstat_mtl_alloc();
1265         if (mtlp == NULL) {
1266                 warn("memstat_mtl_alloc");
1267                 return;
1268         }
1269         if (kd == NULL) {
1270                 if (memstat_sysctl_uma(mtlp, 0) < 0) {
1271                         warnx("memstat_sysctl_uma: %s",
1272                             memstat_strerror(memstat_mtl_geterror(mtlp)));
1273                         return;
1274                 }
1275         } else {
1276                 if (memstat_kvm_uma(mtlp, kd) < 0) {
1277                         error = memstat_mtl_geterror(mtlp);
1278                         if (error == MEMSTAT_ERROR_KVM)
1279                                 warnx("memstat_kvm_uma: %s",
1280                                     kvm_geterr(kd));
1281                         else
1282                                 warnx("memstat_kvm_uma: %s",
1283                                     memstat_strerror(error));
1284                 }
1285         }
1286         printf("%-20s %6s %6s %8s %8s %8s %4s %4s\n\n", "ITEM", "SIZE",
1287             "LIMIT", "USED", "FREE", "REQ", "FAIL", "SLEEP");
1288         for (mtp = memstat_mtl_first(mtlp); mtp != NULL;
1289             mtp = memstat_mtl_next(mtp)) {
1290                 strlcpy(name, memstat_get_name(mtp), MEMTYPE_MAXNAME);
1291                 strcat(name, ":");
1292                 printf("%-20s %6llu, %6llu,%8llu,%8llu,%8llu,%4llu,%4llu\n",name,
1293                     memstat_get_size(mtp), memstat_get_countlimit(mtp),
1294                     memstat_get_count(mtp), memstat_get_free(mtp),
1295                     memstat_get_numallocs(mtp), memstat_get_failures(mtp),
1296                     memstat_get_sleeps(mtp));
1297         }
1298         memstat_mtl_free(mtlp);
1299         printf("\n");
1300 }
1301
1302 /*
1303  * kread reads something from the kernel, given its nlist index.
1304  */
1305 static void
1306 kreado(int nlx, void *addr, size_t size, size_t offset)
1307 {
1308         const char *sym;
1309
1310         if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) {
1311                 sym = namelist[nlx].n_name;
1312                 if (*sym == '_')
1313                         ++sym;
1314                 errx(1, "symbol %s not defined", sym);
1315         }
1316         if ((size_t)kvm_read(kd, namelist[nlx].n_value + offset, addr,
1317             size) != size) {
1318                 sym = namelist[nlx].n_name;
1319                 if (*sym == '_')
1320                         ++sym;
1321                 errx(1, "%s: %s", sym, kvm_geterr(kd));
1322         }
1323 }
1324
1325 static void
1326 kread(int nlx, void *addr, size_t size)
1327 {
1328         kreado(nlx, addr, size, 0);
1329 }
1330
1331 static char *
1332 kgetstr(const char *strp)
1333 {
1334         int n = 0, size = 1;
1335         char *ret = NULL;
1336
1337         do {
1338                 if (size == n + 1) {
1339                         ret = realloc(ret, size);
1340                         if (ret == NULL)
1341                                 err(1, "%s: realloc", __func__);
1342                         size *= 2;
1343                 }
1344                 if (kvm_read(kd, (u_long)strp + n, &ret[n], 1) != 1)
1345                         errx(1, "%s: %s", __func__, kvm_geterr(kd));
1346         } while (ret[n++] != '\0');
1347         return (ret);
1348 }
1349
1350 static void
1351 usage(void)
1352 {
1353         (void)fprintf(stderr, "%s%s",
1354                 "usage: vmstat [-afHhimPsz] [-c count] [-M core [-N system]] [-w wait]\n",
1355                 "              [-n devs] [-p type,if,pass] [disks]\n");
1356         exit(1);
1357 }