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