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