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