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