1 /* 2 * Copyright (c) 1980, 1986, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#) Copyright (c) 1980, 1986, 1991, 1993 The Regents of the University of California. All rights reserved. 30 * @(#)vmstat.c 8.1 (Berkeley) 6/6/93 31 * $FreeBSD: src/usr.bin/vmstat/vmstat.c,v 1.38.2.4 2001/07/31 19:52:41 tmm Exp $ 32 */ 33 34 #include <sys/user.h> 35 #include <sys/param.h> 36 #include <sys/time.h> 37 #include <sys/uio.h> 38 #include <sys/namei.h> 39 #include <sys/objcache.h> 40 #include <sys/signal.h> 41 #include <sys/fcntl.h> 42 #include <sys/ioctl.h> 43 #include <sys/sysctl.h> 44 #include <sys/vmmeter.h> 45 #include <sys/interrupt.h> 46 47 #include <vm/vm_param.h> 48 #include <vm/vm_zone.h> 49 50 #include <ctype.h> 51 #include <err.h> 52 #include <errno.h> 53 #include <kinfo.h> 54 #include <kvm.h> 55 #include <limits.h> 56 #include <nlist.h> 57 #include <paths.h> 58 #include <stdio.h> 59 #include <stdlib.h> 60 #include <string.h> 61 #include <sysexits.h> 62 #include <time.h> 63 #include <unistd.h> 64 #include <devstat.h> 65 66 static struct nlist namelist[] = { 67 #define X_BOOTTIME 0 68 { "_boottime", 0, 0, 0, 0 }, 69 #define X_NCHSTATS 1 70 { "_nchstats", 0, 0, 0, 0 }, 71 #define X_KMEMSTATISTICS 2 72 { "_kmemstatistics", 0, 0, 0, 0 }, 73 #define X_NCPUS 3 74 { "_ncpus", 0, 0, 0, 0 }, 75 #define X_ZLIST 4 76 { "_zlist", 0, 0, 0, 0 }, 77 #ifdef notyet 78 #define X_DEFICIT 5 79 { "_deficit", 0, 0, 0, 0 }, 80 #define X_FORKSTAT 6 81 { "_forkstat", 0, 0, 0, 0 }, 82 #define X_REC 7 83 { "_rectime", 0, 0, 0, 0 }, 84 #define X_PGIN 8 85 { "_pgintime", 0, 0, 0, 0 }, 86 #define X_XSTATS 9 87 { "_xstats", 0, 0, 0, 0 }, 88 #define X_END 10 89 #else 90 #define X_END 5 91 #endif 92 { "", 0, 0, 0, 0 }, 93 }; 94 95 #define ONEMB (1024L * 1024L) 96 #define ONEKB (1024L) 97 98 LIST_HEAD(zlist, vm_zone); 99 100 struct statinfo cur, last; 101 int num_devices, maxshowdevs; 102 long generation; 103 struct device_selection *dev_select; 104 int num_selected; 105 struct devstat_match *matches; 106 int num_matches = 0; 107 int num_devices_specified, num_selections; 108 long select_generation; 109 char **specified_devices; 110 devstat_select_mode select_mode; 111 112 struct vmmeter vmm, ovmm; 113 struct vmstats vms, ovms; 114 115 int winlines = 20; 116 int nflag = 0; 117 int verbose = 0; 118 int unformatted_opt = 0; 119 int brief_opt = 0; 120 int ncpus; 121 122 kvm_t *kd; 123 124 struct kinfo_cputime cp_time, old_cp_time, diff_cp_time; 125 126 #define FORKSTAT 0x01 127 #define INTRSTAT 0x02 128 #define MEMSTAT 0x04 129 #define SUMSTAT 0x08 130 #define TIMESTAT 0x10 131 #define VMSTAT 0x20 132 #define ZMEMSTAT 0x40 133 #define OCSTAT 0x80 134 135 static void cpustats(void); 136 static void dointr(void); 137 static void domem(void); 138 static void dooc(void); 139 static void dosum(void); 140 static void dozmem(u_int interval, int reps); 141 static void dovmstat(u_int, int); 142 static void kread(int, void *, size_t); 143 static void usage(void); 144 static char **getdrivedata(char **); 145 static long getuptime(void); 146 static void needhdr(int); 147 static long pct(long, long); 148 149 #ifdef notyet 150 static void dotimes(void); /* Not implemented */ 151 static void doforkst(void); 152 #endif 153 static void printhdr(void); 154 static const char *formatnum(intmax_t value, int width, int do10s); 155 static void devstats(int dooutput); 156 157 int 158 main(int argc, char **argv) 159 { 160 int c, todo; 161 u_int interval; /* milliseconds */ 162 int reps; 163 char *memf, *nlistf; 164 char errbuf[_POSIX2_LINE_MAX]; 165 166 memf = nlistf = NULL; 167 interval = reps = todo = 0; 168 maxshowdevs = 2; 169 while ((c = getopt(argc, argv, "bc:fiM:mN:n:op:stuvw:z")) != -1) { 170 switch (c) { 171 case 'b': 172 brief_opt = 1; 173 break; 174 case 'c': 175 reps = atoi(optarg); 176 break; 177 case 'f': 178 #ifdef notyet 179 todo |= FORKSTAT; 180 #else 181 errx(EX_USAGE, "sorry, -f is not (re)implemented yet"); 182 #endif 183 break; 184 case 'i': 185 todo |= INTRSTAT; 186 break; 187 case 'M': 188 memf = optarg; 189 break; 190 case 'm': 191 todo |= MEMSTAT; 192 break; 193 case 'N': 194 nlistf = optarg; 195 break; 196 case 'n': 197 nflag = 1; 198 maxshowdevs = atoi(optarg); 199 if (maxshowdevs < 0) 200 errx(1, "number of devices %d is < 0", 201 maxshowdevs); 202 break; 203 case 'o': 204 todo |= OCSTAT; 205 break; 206 case 'p': 207 if (buildmatch(optarg, &matches, &num_matches) != 0) 208 errx(1, "%s", devstat_errbuf); 209 break; 210 case 's': 211 todo |= SUMSTAT; 212 break; 213 case 't': 214 #ifdef notyet 215 todo |= TIMESTAT; 216 #else 217 errx(EX_USAGE, "sorry, -t is not (re)implemented yet"); 218 #endif 219 break; 220 case 'u': 221 unformatted_opt = 1; 222 break; 223 case 'v': 224 ++verbose; 225 break; 226 case 'w': 227 interval = (u_int)(strtod(optarg, NULL) * 1000.0); 228 break; 229 case 'z': 230 todo |= ZMEMSTAT; 231 break; 232 default: 233 usage(); 234 } 235 } 236 argc -= optind; 237 argv += optind; 238 239 if (todo == 0) 240 todo = VMSTAT; 241 242 /* 243 * Discard setgid privileges if not the running kernel so that bad 244 * guys can't print interesting stuff from kernel memory. 245 */ 246 if (nlistf != NULL || memf != NULL) { 247 setgid(getgid()); 248 if (todo & OCSTAT) { 249 errx(1, "objcache stats can only be gathered on " 250 "the running system"); 251 } 252 } 253 254 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 255 if (kd == NULL) 256 errx(1, "kvm_openfiles: %s", errbuf); 257 258 if ((c = kvm_nlist(kd, namelist)) != 0) { 259 if (c > 0) { 260 warnx("undefined symbols:"); 261 for (c = 0; c < (int)NELEM(namelist); c++) 262 if (namelist[c].n_type == 0) 263 fprintf(stderr, " %s", 264 namelist[c].n_name); 265 fputc('\n', stderr); 266 } else 267 warnx("kvm_nlist: %s", kvm_geterr(kd)); 268 exit(1); 269 } 270 271 kread(X_NCPUS, &ncpus, sizeof(ncpus)); 272 273 if (todo & VMSTAT) { 274 struct winsize winsize; 275 276 /* 277 * Make sure that the userland devstat version matches the 278 * kernel devstat version. If not, exit and print a 279 * message informing the user of his mistake. 280 */ 281 if (checkversion() < 0) 282 errx(1, "%s", devstat_errbuf); 283 284 285 argv = getdrivedata(argv); 286 winsize.ws_row = 0; 287 ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize); 288 if (winsize.ws_row > 0) 289 winlines = winsize.ws_row; 290 291 } 292 293 #define BACKWARD_COMPATIBILITY 294 #ifdef BACKWARD_COMPATIBILITY 295 if (*argv) { 296 interval = (u_int)(strtod(*argv, NULL) * 1000.0); 297 if (*++argv) 298 reps = atoi(*argv); 299 } 300 #endif 301 302 if (interval) { 303 if (!reps) 304 reps = -1; 305 } else if (reps) { 306 interval = 1000; 307 } 308 309 #ifdef notyet 310 if (todo & FORKSTAT) 311 doforkst(); 312 #endif 313 if (todo & MEMSTAT) 314 domem(); 315 if (todo & ZMEMSTAT) 316 dozmem(interval, reps); 317 if (todo & SUMSTAT) 318 dosum(); 319 #ifdef notyet 320 if (todo & TIMESTAT) 321 dotimes(); 322 #endif 323 if (todo & INTRSTAT) 324 dointr(); 325 if (todo & VMSTAT) 326 dovmstat(interval, reps); 327 if (todo & OCSTAT) 328 dooc(); 329 exit(0); 330 } 331 332 static char ** 333 getdrivedata(char **argv) 334 { 335 if ((num_devices = getnumdevs()) < 0) 336 errx(1, "%s", devstat_errbuf); 337 338 cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 339 last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 340 bzero(cur.dinfo, sizeof(struct devinfo)); 341 bzero(last.dinfo, sizeof(struct devinfo)); 342 343 if (getdevs(&cur) == -1) 344 errx(1, "%s", devstat_errbuf); 345 346 num_devices = cur.dinfo->numdevs; 347 generation = cur.dinfo->generation; 348 349 specified_devices = (char **)malloc(sizeof(char *)); 350 for (num_devices_specified = 0; *argv; ++argv) { 351 if (isdigit(**argv)) 352 break; 353 num_devices_specified++; 354 specified_devices = (char **)realloc(specified_devices, 355 sizeof(char *) * 356 num_devices_specified); 357 specified_devices[num_devices_specified - 1] = *argv; 358 } 359 dev_select = NULL; 360 361 if (nflag == 0 && maxshowdevs < num_devices_specified) 362 maxshowdevs = num_devices_specified; 363 364 /* 365 * People are generally only interested in disk statistics when 366 * they're running vmstat. So, that's what we're going to give 367 * them if they don't specify anything by default. We'll also give 368 * them any other random devices in the system so that we get to 369 * maxshowdevs devices, if that many devices exist. If the user 370 * specifies devices on the command line, either through a pattern 371 * match or by naming them explicitly, we will give the user only 372 * those devices. 373 */ 374 if ((num_devices_specified == 0) && (num_matches == 0)) { 375 if (buildmatch("da", &matches, &num_matches) != 0) 376 errx(1, "%s", devstat_errbuf); 377 378 select_mode = DS_SELECT_ADD; 379 } else 380 select_mode = DS_SELECT_ONLY; 381 382 /* 383 * At this point, selectdevs will almost surely indicate that the 384 * device list has changed, so we don't look for return values of 0 385 * or 1. If we get back -1, though, there is an error. 386 */ 387 if (selectdevs(&dev_select, &num_selected, &num_selections, 388 &select_generation, generation, cur.dinfo->devices, 389 num_devices, matches, num_matches, specified_devices, 390 num_devices_specified, select_mode, 391 maxshowdevs, 0) == -1) 392 errx(1, "%s", devstat_errbuf); 393 394 return(argv); 395 } 396 397 static long 398 getuptime(void) 399 { 400 static time_t now, boottime; 401 time_t uptime; 402 403 if (boottime == 0) 404 kread(X_BOOTTIME, &boottime, sizeof(boottime)); 405 time(&now); 406 uptime = now - boottime; 407 if (uptime <= 0 || uptime > 60*60*24*365*10) 408 errx(1, "time makes no sense; namelist must be wrong"); 409 return(uptime); 410 } 411 412 int hdrcnt; 413 414 static void 415 dovmstat(u_int interval, int reps) 416 { 417 struct vmtotal total; 418 struct devinfo *tmp_dinfo; 419 size_t vmm_size = sizeof(vmm); 420 size_t vms_size = sizeof(vms); 421 size_t vmt_size = sizeof(total); 422 int initial = 1; 423 int dooutput = 1; 424 425 signal(SIGCONT, needhdr); 426 if (reps != 0) 427 dooutput = 0; 428 429 for (hdrcnt = 1;;) { 430 if (!--hdrcnt) 431 printhdr(); 432 if (kinfo_get_sched_cputime(&cp_time)) 433 err(1, "kinfo_get_sched_cputime"); 434 435 tmp_dinfo = last.dinfo; 436 last.dinfo = cur.dinfo; 437 cur.dinfo = tmp_dinfo; 438 last.busy_time = cur.busy_time; 439 440 /* 441 * Here what we want to do is refresh our device stats. 442 * getdevs() returns 1 when the device list has changed. 443 * If the device list has changed, we want to go through 444 * the selection process again, in case a device that we 445 * were previously displaying has gone away. 446 */ 447 switch (getdevs(&cur)) { 448 case -1: 449 errx(1, "%s", devstat_errbuf); 450 break; 451 case 1: { 452 int retval; 453 454 num_devices = cur.dinfo->numdevs; 455 generation = cur.dinfo->generation; 456 457 retval = selectdevs(&dev_select, &num_selected, 458 &num_selections, &select_generation, 459 generation, cur.dinfo->devices, 460 num_devices, matches, num_matches, 461 specified_devices, 462 num_devices_specified, select_mode, 463 maxshowdevs, 0); 464 switch (retval) { 465 case -1: 466 errx(1, "%s", devstat_errbuf); 467 break; 468 case 1: 469 printhdr(); 470 break; 471 default: 472 break; 473 } 474 } 475 default: 476 break; 477 } 478 479 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) { 480 perror("sysctlbyname: vm.vmstats"); 481 exit(1); 482 } 483 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 484 perror("sysctlbyname: vm.vmmeter"); 485 exit(1); 486 } 487 if (sysctlbyname("vm.vmtotal", &total, &vmt_size, NULL, 0)) { 488 perror("sysctlbyname: vm.vmtotal"); 489 exit(1); 490 } 491 if (dooutput) { 492 printf("%3ld %2ld %2ld", 493 total.t_rq - 1, 494 total.t_dw + total.t_pw, 495 total.t_sw); 496 } 497 498 #define rate(x) \ 499 (intmax_t)(initial ? (x) : ((intmax_t)(x) * 1000 + interval / 2) \ 500 / interval) 501 502 if (dooutput) { 503 printf(" %s ", 504 formatnum((int64_t)total.t_free * 505 vms.v_page_size, 506 5, 1)); 507 printf("%s ", 508 formatnum(rate(vmm.v_vm_faults - 509 ovmm.v_vm_faults), 510 5, 1)); 511 printf("%s ", 512 formatnum(rate(vmm.v_reactivated - 513 ovmm.v_reactivated), 514 4, 0)); 515 printf("%s ", 516 formatnum(rate(vmm.v_swapin + vmm.v_vnodein - 517 (ovmm.v_swapin + 518 ovmm.v_vnodein)), 519 4, 0)); 520 printf("%s ", 521 formatnum(rate(vmm.v_swapout + vmm.v_vnodeout - 522 (ovmm.v_swapout + 523 ovmm.v_vnodeout)), 524 4, 0)); 525 printf("%s ", 526 formatnum(rate(vmm.v_tfree - ovmm.v_tfree), 527 4, 0)); 528 } 529 devstats(dooutput); 530 if (dooutput) { 531 printf("%s ", 532 formatnum(rate(vmm.v_intr - ovmm.v_intr), 533 5, 1)); 534 printf("%s ", 535 formatnum(rate(vmm.v_syscall - 536 ovmm.v_syscall), 537 5, 1)); 538 printf("%s ", 539 formatnum(rate(vmm.v_swtch - 540 ovmm.v_swtch), 541 5, 1)); 542 cpustats(); 543 printf("\n"); 544 fflush(stdout); 545 } 546 if (reps >= 0 && --reps <= 0) 547 break; 548 ovmm = vmm; 549 usleep(interval * 1000); 550 initial = 0; 551 dooutput = 1; 552 } 553 } 554 555 static const char * 556 formatnum(intmax_t value, int width, int do10s) 557 { 558 static char buf[16][64]; 559 static int bi; 560 const char *fmt; 561 double d; 562 563 if (brief_opt) 564 do10s = 0; 565 566 bi = (bi + 1) % 16; 567 568 if (unformatted_opt) { 569 switch(width) { 570 case 4: 571 snprintf(buf[bi], sizeof(buf[bi]), "%4jd", value); 572 break; 573 case 5: 574 snprintf(buf[bi], sizeof(buf[bi]), "%5jd", value); 575 break; 576 default: 577 snprintf(buf[bi], sizeof(buf[bi]), "%jd", value); 578 break; 579 } 580 return buf[bi]; 581 } 582 583 d = (double)value; 584 fmt = "n/a"; 585 586 switch(width) { 587 case 4: 588 if (value < 1024) { 589 fmt = "%4.0f"; 590 } else if (value < 10*1024) { 591 fmt = "%3.1fK"; 592 d = d / 1024; 593 } else if (value < 1000*1024) { 594 fmt = "%3.0fK"; 595 d = d / 1024; 596 } else if (value < 10*1024*1024) { 597 fmt = "%3.1fM"; 598 d = d / (1024 * 1024); 599 } else if (value < 1000*1024*1024) { 600 fmt = "%3.0fM"; 601 d = d / (1024 * 1024); 602 } else { 603 fmt = "%3.1fG"; 604 d = d / (1024.0 * 1024.0 * 1024.0); 605 } 606 break; 607 case 5: 608 if (value < 1024) { 609 fmt = "%5.0f"; 610 } else if (value < 10*1024) { 611 fmt = "%4.2fK"; 612 d = d / 1024; 613 } else if (value < 100*1024 && do10s) { 614 fmt = "%4.1fK"; 615 d = d / 1024; 616 } else if (value < 1000*1024) { 617 fmt = "%4.0fK"; 618 d = d / 1024; 619 } else if (value < 10*1024*1024) { 620 fmt = "%4.2fM"; 621 d = d / (1024 * 1024); 622 } else if (value < 100*1024*1024 && do10s) { 623 fmt = "%4.1fM"; 624 d = d / (1024 * 1024); 625 } else if (value < 1000*1024*1024) { 626 fmt = "%4.0fM"; 627 d = d / (1024 * 1024); 628 } else if (value < 10LL*1024*1024*1024) { 629 fmt = "%4.2fG"; 630 d = d / (1024.0 * 1024.0 * 1024.0); 631 } else if (value < 100LL*1024*1024*1024 && do10s) { 632 fmt = "%4.1fG"; 633 d = d / (1024.0 * 1024.0 * 1024.0); 634 } else if (value < 1000LL*1024*1024*1024) { 635 fmt = "%4.0fG"; 636 d = d / (1024.0 * 1024.0 * 1024.0); 637 } else { 638 fmt = "%4.2fT"; 639 d = d / (1024.0 * 1024.0 * 1024.0 * 1024.0); 640 } 641 break; 642 default: 643 fprintf(stderr, "formatnum: unsupported width %d\n", width); 644 exit(1); 645 break; 646 } 647 snprintf(buf[bi], sizeof(buf[bi]), fmt, d); 648 return buf[bi]; 649 } 650 651 static void 652 printhdr(void) 653 { 654 int i, num_shown; 655 656 num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs; 657 printf("--procs-- ---memory-- -------paging------ "); 658 if (num_shown > 1) 659 printf("--disks%.*s", 660 num_shown * 4 - 6, 661 "---------------------------------"); 662 else if (num_shown == 1) 663 printf("disk"); 664 printf(" -----faults------ ---cpu---\n"); 665 printf(" r b w fre flt re pi po fr "); 666 for (i = 0; i < num_devices; i++) 667 if ((dev_select[i].selected) 668 && (dev_select[i].selected <= maxshowdevs)) 669 printf(" %c%c%d ", dev_select[i].device_name[0], 670 dev_select[i].device_name[1], 671 dev_select[i].unit_number); 672 printf(" int sys ctx us sy id\n"); 673 hdrcnt = winlines - 2; 674 } 675 676 /* 677 * Force a header to be prepended to the next output. 678 */ 679 static void 680 needhdr(__unused int signo) 681 { 682 683 hdrcnt = 1; 684 } 685 686 static long 687 pct(long top, long bot) 688 { 689 long ans; 690 691 if (bot == 0) 692 return(0); 693 ans = (quad_t)top * 100 / bot; 694 return (ans); 695 } 696 697 #define PCT(top, bot) pct((long)(top), (long)(bot)) 698 699 static void 700 dosum(void) 701 { 702 struct nchstats *nch_tmp, nchstats; 703 size_t vms_size = sizeof(vms); 704 size_t vmm_size = sizeof(vmm); 705 int cpucnt; 706 u_long nchtotal; 707 u_long nchpathtotal; 708 size_t nch_size = sizeof(struct nchstats) * SMP_MAXCPU; 709 710 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) { 711 perror("sysctlbyname: vm.vmstats"); 712 exit(1); 713 } 714 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 715 perror("sysctlbyname: vm.vmstats"); 716 exit(1); 717 } 718 printf("%9u cpu context switches\n", vmm.v_swtch); 719 printf("%9u device interrupts\n", vmm.v_intr); 720 printf("%9u software interrupts\n", vmm.v_soft); 721 printf("%9u traps\n", vmm.v_trap); 722 printf("%9u system calls\n", vmm.v_syscall); 723 printf("%9u kernel threads created\n", vmm.v_kthreads); 724 printf("%9u fork() calls\n", vmm.v_forks); 725 printf("%9u vfork() calls\n", vmm.v_vforks); 726 printf("%9u rfork() calls\n", vmm.v_rforks); 727 printf("%9u exec() calls\n", vmm.v_exec); 728 printf("%9u swap pager pageins\n", vmm.v_swapin); 729 printf("%9u swap pager pages paged in\n", vmm.v_swappgsin); 730 printf("%9u swap pager pageouts\n", vmm.v_swapout); 731 printf("%9u swap pager pages paged out\n", vmm.v_swappgsout); 732 printf("%9u vnode pager pageins\n", vmm.v_vnodein); 733 printf("%9u vnode pager pages paged in\n", vmm.v_vnodepgsin); 734 printf("%9u vnode pager pageouts\n", vmm.v_vnodeout); 735 printf("%9u vnode pager pages paged out\n", vmm.v_vnodepgsout); 736 printf("%9u page daemon wakeups\n", vmm.v_pdwakeups); 737 printf("%9u pages examined by the page daemon\n", vmm.v_pdpages); 738 printf("%9u pages reactivated\n", vmm.v_reactivated); 739 printf("%9u copy-on-write faults\n", vmm.v_cow_faults); 740 printf("%9u copy-on-write optimized faults\n", vmm.v_cow_optim); 741 printf("%9u zero fill pages zeroed\n", vmm.v_zfod); 742 printf("%9u zero fill pages prezeroed\n", vmm.v_ozfod); 743 printf("%9u intransit blocking page faults\n", vmm.v_intrans); 744 printf("%9u total VM faults taken\n", vmm.v_vm_faults); 745 printf("%9u pages affected by kernel thread creation\n", vmm.v_kthreadpages); 746 printf("%9u pages affected by fork()\n", vmm.v_forkpages); 747 printf("%9u pages affected by vfork()\n", vmm.v_vforkpages); 748 printf("%9u pages affected by rfork()\n", vmm.v_rforkpages); 749 printf("%9u pages freed\n", vmm.v_tfree); 750 printf("%9u pages freed by daemon\n", vmm.v_dfree); 751 printf("%9u pages freed by exiting processes\n", vmm.v_pfree); 752 printf("%9lu pages active\n", vms.v_active_count); 753 printf("%9lu pages inactive\n", vms.v_inactive_count); 754 printf("%9lu pages in VM cache\n", vms.v_cache_count); 755 printf("%9lu pages wired down\n", vms.v_wire_count); 756 printf("%9lu pages free\n", vms.v_free_count); 757 printf("%9u bytes per page\n", vms.v_page_size); 758 printf("%9u global smp invltlbs\n", vmm.v_smpinvltlb); 759 760 if ((nch_tmp = malloc(nch_size)) == NULL) { 761 perror("malloc"); 762 exit(1); 763 } else { 764 if (sysctlbyname("vfs.cache.nchstats", nch_tmp, &nch_size, NULL, 0)) { 765 perror("sysctlbyname vfs.cache.nchstats"); 766 free(nch_tmp); 767 exit(1); 768 } else { 769 if ((nch_tmp = realloc(nch_tmp, nch_size)) == NULL) { 770 perror("realloc"); 771 exit(1); 772 } 773 } 774 } 775 776 cpucnt = nch_size / sizeof(struct nchstats); 777 kvm_nch_cpuagg(nch_tmp, &nchstats, cpucnt); 778 779 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits + 780 nchstats.ncs_badhits + nchstats.ncs_falsehits + 781 nchstats.ncs_miss; 782 nchpathtotal = nchstats.ncs_longhits + nchstats.ncs_longmiss; 783 printf("%9ld total path lookups\n", nchpathtotal); 784 printf("%9ld total component lookups\n", nchtotal); 785 printf( 786 "%9s cache hits (%ld%% pos + %ld%% neg)\n", 787 "", PCT(nchstats.ncs_goodhits, nchtotal), 788 PCT(nchstats.ncs_neghits, nchtotal)); 789 printf("%9s deletions %ld%%, falsehits %ld%%\n", "", 790 PCT(nchstats.ncs_badhits, nchtotal), 791 PCT(nchstats.ncs_falsehits, nchtotal)); 792 free(nch_tmp); 793 } 794 795 #ifdef notyet 796 void 797 doforkst(void) 798 { 799 struct forkstat fks; 800 801 kread(X_FORKSTAT, &fks, sizeof(struct forkstat)); 802 printf("%d forks, %d pages, average %.2f\n", 803 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork); 804 printf("%d vforks, %d pages, average %.2f\n", 805 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork); 806 } 807 #endif 808 809 static void 810 devstats(int dooutput) 811 { 812 int dn; 813 long double transfers_per_second; 814 long double busy_seconds; 815 816 diff_cp_time.cp_user = cp_time.cp_user - old_cp_time.cp_user; 817 diff_cp_time.cp_nice = cp_time.cp_nice - old_cp_time.cp_nice; 818 diff_cp_time.cp_sys = cp_time.cp_sys - old_cp_time.cp_sys; 819 diff_cp_time.cp_intr = cp_time.cp_intr - old_cp_time.cp_intr; 820 diff_cp_time.cp_idle = cp_time.cp_idle - old_cp_time.cp_idle; 821 old_cp_time = cp_time; 822 823 busy_seconds = compute_etime(cur.busy_time, last.busy_time); 824 825 for (dn = 0; dn < num_devices; dn++) { 826 int di; 827 828 if ((dev_select[dn].selected == 0) 829 || (dev_select[dn].selected > maxshowdevs)) 830 continue; 831 832 di = dev_select[dn].position; 833 834 if (compute_stats(&cur.dinfo->devices[di], 835 &last.dinfo->devices[di], busy_seconds, 836 NULL, NULL, NULL, 837 NULL, &transfers_per_second, NULL, 838 NULL, NULL) != 0) 839 errx(1, "%s", devstat_errbuf); 840 841 if (dooutput) 842 printf("%s ", formatnum(transfers_per_second, 4, 0)); 843 } 844 } 845 846 static void 847 cpustats(void) 848 { 849 uint64_t total; 850 double totusage; 851 852 total = diff_cp_time.cp_user + diff_cp_time.cp_nice + 853 diff_cp_time.cp_sys + diff_cp_time.cp_intr + diff_cp_time.cp_idle; 854 855 if (total) 856 totusage = 100.0 / total; 857 else 858 totusage = 0; 859 printf("%2.0f ", 860 (diff_cp_time.cp_user + diff_cp_time.cp_nice) * totusage); 861 printf("%2.0f ", 862 (diff_cp_time.cp_sys + diff_cp_time.cp_intr) * totusage); 863 printf("%2.0f", 864 diff_cp_time.cp_idle * totusage); 865 } 866 867 static void 868 dointr(void) 869 { 870 u_long *intrcnt, uptime; 871 u_int64_t inttotal; 872 size_t nintr, inamlen, i, size; 873 int nwidth; 874 char *intrstr; 875 char **intrname; 876 877 uptime = getuptime(); 878 if (sysctlbyname("hw.intrnames", NULL, &inamlen, NULL, 0) != 0) 879 errx(1, "sysctlbyname"); 880 intrstr = malloc(inamlen); 881 if (intrstr == NULL) 882 err(1, "malloc"); 883 sysctlbyname("hw.intrnames", intrstr, &inamlen, NULL, 0); 884 for (nintr = 0, i = 0; i < inamlen; ++i) { 885 if (intrstr[i] == 0) 886 nintr++; 887 } 888 intrname = malloc(nintr * sizeof(char *)); 889 for (i = 0; i < nintr; ++i) { 890 intrname[i] = intrstr; 891 intrstr += strlen(intrstr) + 1; 892 } 893 894 size = nintr * sizeof(*intrcnt); 895 intrcnt = calloc(nintr, sizeof(*intrcnt)); 896 if (intrcnt == NULL) 897 err(1, "malloc"); 898 sysctlbyname("hw.intrcnt", intrcnt, &size, NULL, 0); 899 900 nwidth = 21; 901 for (i = 0; i < nintr; ++i) { 902 if (nwidth < (int)strlen(intrname[i])) 903 nwidth = (int)strlen(intrname[i]); 904 } 905 if (verbose) nwidth += 12; 906 907 printf("%-*.*s %11s %10s\n", 908 nwidth, nwidth, "interrupt", "total", "rate"); 909 inttotal = 0; 910 for (i = 0; i < nintr; ++i) { 911 int named; 912 char *infop, irqinfo[72]; 913 914 if ((named = strncmp(intrname[i], "irq", 3)) != 0 || 915 intrcnt[i] > 0) { 916 infop = intrname[i]; 917 if (verbose) { 918 ssize_t irq, cpu; 919 920 irq = i % MAX_INTS; 921 cpu = i / MAX_INTS; 922 if (named) { 923 snprintf(irqinfo, sizeof(irqinfo), 924 "irq%-3zd %3zd: %s", 925 irq, cpu, intrname[i]); 926 } else { 927 snprintf(irqinfo, sizeof(irqinfo), 928 "irq%-3zd %3zd: ", irq, cpu); 929 } 930 infop = irqinfo; 931 } 932 printf("%-*.*s %11lu %10lu\n", 933 nwidth, nwidth, infop, 934 intrcnt[i], intrcnt[i] / uptime); 935 } 936 inttotal += intrcnt[i]; 937 } 938 printf("%-*.*s %11llu %10llu\n", 939 nwidth, nwidth, "Total", 940 (long long)inttotal, (long long)(inttotal / uptime)); 941 } 942 943 #define MAX_KMSTATS 16384 944 945 enum ksuse { KSINUSE, KSMEMUSE, KSCALLS }; 946 947 static long 948 cpuagg(struct malloc_type *ks, enum ksuse use) 949 { 950 int i; 951 long ttl; 952 953 ttl = 0; 954 955 switch(use) { 956 case KSINUSE: 957 for (i = 0; i < ncpus; ++i) 958 ttl += ks->ks_use[i].inuse; 959 break; 960 case KSMEMUSE: 961 for (i = 0; i < ncpus; ++i) 962 ttl += ks->ks_use[i].memuse; 963 break; 964 case KSCALLS: 965 for (i = 0; i < ncpus; ++i) 966 ttl += ks->ks_use[i].calls; 967 break; 968 } 969 return(ttl); 970 } 971 972 static void 973 domem(void) 974 { 975 struct malloc_type *ks; 976 int i; 977 int nkms; 978 long totuse = 0, totreq = 0; 979 struct malloc_type kmemstats[MAX_KMSTATS], *kmsp; 980 char buf[1024]; 981 982 kread(X_KMEMSTATISTICS, &kmsp, sizeof(kmsp)); 983 for (nkms = 0; nkms < MAX_KMSTATS && kmsp != NULL; nkms++) { 984 if (sizeof(kmemstats[0]) != kvm_read(kd, (u_long)kmsp, 985 &kmemstats[nkms], sizeof(kmemstats[0]))) 986 err(1, "kvm_read(%p)", (void *)kmsp); 987 if (sizeof(buf) != kvm_read(kd, 988 (u_long)kmemstats[nkms].ks_shortdesc, buf, sizeof(buf))) 989 err(1, "kvm_read(%p)", 990 kmemstats[nkms].ks_shortdesc); 991 buf[sizeof(buf) - 1] = '\0'; 992 kmemstats[nkms].ks_shortdesc = strdup(buf); 993 if (kmemstats[nkms].ks_use) { 994 size_t usebytes; 995 void *use; 996 997 usebytes = ncpus * sizeof(kmemstats[nkms].ks_use[0]); 998 use = malloc(usebytes); 999 if (kvm_read(kd, (u_long)kmemstats[nkms].ks_use, 1000 use, usebytes) != (ssize_t)usebytes) { 1001 err(1, "kvm_read(%p)", kmemstats[nkms].ks_use); 1002 } 1003 kmemstats[nkms].ks_use = use; 1004 } 1005 kmsp = kmemstats[nkms].ks_next; 1006 } 1007 if (kmsp != NULL) 1008 warnx("truncated to the first %d memory types", nkms); 1009 1010 printf( 1011 "\nMemory statistics by type\n"); 1012 printf(" Type Count MemUse Limit Requests\n"); 1013 for (i = 0, ks = &kmemstats[0]; i < nkms; i++, ks++) { 1014 long ks_inuse; 1015 long ks_memuse; 1016 long ks_calls; 1017 1018 ks_calls = cpuagg(ks, KSCALLS); 1019 if (ks_calls == 0 && verbose == 0) 1020 continue; 1021 1022 ks_inuse = cpuagg(ks, KSINUSE); 1023 ks_memuse = cpuagg(ks, KSMEMUSE); 1024 1025 printf("%19s %s %s %s %s\n", 1026 ks->ks_shortdesc, 1027 formatnum(ks_inuse, 5, 1), 1028 formatnum(ks_memuse, 5, 1), 1029 formatnum(ks->ks_limit, 5, 1), 1030 formatnum(ks_calls, 5, 1)); 1031 1032 totuse += ks_memuse; 1033 totreq += ks_calls; 1034 } 1035 printf("\nMemory Totals: In Use Requests\n"); 1036 printf(" %s %s\n", 1037 formatnum(totuse, 5, 1), 1038 formatnum(totreq, 5, 1)); 1039 } 1040 1041 static void 1042 dooc(void) 1043 { 1044 struct objcache_stats *stat, *s; 1045 size_t len, count; 1046 1047 if (sysctlbyname("kern.objcache.stats", NULL, &len, NULL, 0) < 0) 1048 errx(1, "objcache stats sysctl failed\n"); 1049 1050 /* Add some extra space. */ 1051 stat = malloc(len + (8 * sizeof(*stat))); 1052 if (sysctlbyname("kern.objcache.stats", stat, &len, NULL, 0) < 0) 1053 errx(1, "objcache stats sysctl failed\n"); 1054 1055 printf( 1056 "\nObjcache statistics by name\n"); 1057 printf(" Name Used Cached Limit Requests Allocs Fails Exhausts\n"); 1058 for (s = stat, count = 0; count < len; ++s) { 1059 printf("%21s %s %s %s %s %s %s %s\n", 1060 s->oc_name, 1061 formatnum(s->oc_used, 5, 1), 1062 formatnum(s->oc_cached, 5, 1), 1063 s->oc_limit < OBJCACHE_UNLIMITED ? 1064 formatnum(s->oc_limit, 5, 1) : "unlim", 1065 formatnum(s->oc_requested, 5, 1), 1066 formatnum(s->oc_allocated, 5, 1), 1067 formatnum(s->oc_failed, 4, 1), 1068 formatnum(s->oc_exhausted, 4, 1)); 1069 1070 count += sizeof(*s); 1071 } 1072 free(stat); 1073 } 1074 1075 #define MAXSAVE 16 1076 1077 static void 1078 dozmem(u_int interval, int reps) 1079 { 1080 struct zlist zlist; 1081 struct vm_zone *kz; 1082 struct vm_zone zone; 1083 struct vm_zone save[MAXSAVE]; 1084 long zfreecnt_prev; 1085 long znalloc_prev; 1086 long zfreecnt_next; 1087 long znalloc_next; 1088 char name[64]; 1089 size_t namesz; 1090 int first = 1; 1091 int i; 1092 int n; 1093 1094 bzero(save, sizeof(save)); 1095 1096 again: 1097 kread(X_ZLIST, &zlist, sizeof(zlist)); 1098 kz = LIST_FIRST(&zlist); 1099 i = 0; 1100 1101 while (kz) { 1102 if (kvm_read(kd, (intptr_t)kz, &zone, sizeof(zone)) != 1103 (ssize_t)sizeof(zone)) { 1104 perror("kvm_read"); 1105 break; 1106 } 1107 zfreecnt_prev = save[i].zfreecnt; 1108 znalloc_prev = save[i].znalloc; 1109 for (n = 0; n < ncpus; ++n) { 1110 zfreecnt_prev += save[i].zpcpu[n].zfreecnt; 1111 znalloc_prev += save[i].zpcpu[n].znalloc; 1112 } 1113 1114 zfreecnt_next = zone.zfreecnt; 1115 znalloc_next = zone.znalloc; 1116 for (n = 0; n < ncpus; ++n) { 1117 zfreecnt_next += zone.zpcpu[n].zfreecnt; 1118 znalloc_next += zone.zpcpu[n].znalloc; 1119 } 1120 save[i] = zone; 1121 1122 namesz = sizeof(name); 1123 if (kvm_readstr(kd, (intptr_t)zone.zname, name, &namesz) == NULL) { 1124 perror("kvm_read"); 1125 break; 1126 } 1127 if (first && interval) { 1128 /* do nothing */ 1129 } else if (zone.zmax) { 1130 printf("%-10s %9ld / %-9ld %5ldM used" 1131 " %6.2f%% ", 1132 name, 1133 (long)(zone.ztotal - zfreecnt_next), 1134 (long)zone.zmax, 1135 (long)zone.zpagecount * 4096 / (1024 * 1024), 1136 (double)(zone.ztotal - zfreecnt_next) * 1137 100.0 / (double)zone.zmax); 1138 } else { 1139 printf("%-10s %9ld %5ldM used" 1140 " ", 1141 name, 1142 (long)(zone.ztotal - zfreecnt_next), 1143 (long)(zone.ztotal - zfreecnt_next) * 1144 zone.zsize / (1024 * 1024)); 1145 } 1146 if (first == 0) { 1147 printf("use=%ld\n", znalloc_next - znalloc_prev); 1148 } else if (interval == 0) 1149 printf("\n"); 1150 1151 kz = LIST_NEXT(&zone, zlink); 1152 ++i; 1153 } 1154 if (reps) { 1155 first = 0; 1156 fflush(stdout); 1157 usleep(interval * 1000); 1158 --reps; 1159 printf("\n"); 1160 goto again; 1161 } 1162 } 1163 1164 /* 1165 * kread reads something from the kernel, given its nlist index. 1166 */ 1167 static void 1168 kread(int nlx, void *addr, size_t size) 1169 { 1170 const char *sym; 1171 1172 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) { 1173 sym = namelist[nlx].n_name; 1174 if (*sym == '_') 1175 ++sym; 1176 errx(1, "symbol %s not defined", sym); 1177 } 1178 if (kvm_read(kd, namelist[nlx].n_value, addr, size) != (ssize_t)size) { 1179 sym = namelist[nlx].n_name; 1180 if (*sym == '_') 1181 ++sym; 1182 errx(1, "%s: %s", sym, kvm_geterr(kd)); 1183 } 1184 } 1185 1186 static void 1187 usage(void) 1188 { 1189 fprintf(stderr, "%s%s", 1190 "usage: vmstat [-imsuvz] [-c count] [-M core] " 1191 "[-N system] [-w wait]\n", 1192 " [-n devs] [disks]\n"); 1193 exit(1); 1194 } 1195