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[64]; 525 const char *fmt; 526 double d; 527 528 d = (double)value; 529 fmt = "n/a"; 530 531 switch(width) { 532 case 4: 533 if (value < 1024) { 534 fmt = "%4.0f"; 535 } else if (value < 10*1024) { 536 fmt = "%3.1fK"; 537 d = d / 1024; 538 } else if (value < 1000*1024) { 539 fmt = "%3.0fK"; 540 d = d / 1024; 541 } else if (value < 10*1024*1024) { 542 fmt = "%3.1fM"; 543 d = d / (1024 * 1024); 544 } else if (value < 1000*1024*1024) { 545 fmt = "%3.0fM"; 546 d = d / (1024 * 1024); 547 } else { 548 fmt = "%3.1fG"; 549 d = d / (1024.0 * 1024.0 * 1024.0); 550 } 551 break; 552 case 5: 553 if (value < 1024) { 554 fmt = "%5.0f"; 555 } else if (value < 10*1024) { 556 fmt = "%4.2fK"; 557 d = d / 1024; 558 } else if (value < 1000*1024) { 559 fmt = "%4.0fK"; 560 d = d / 1024; 561 } else if (value < 10*1024*1024) { 562 fmt = "%4.2fM"; 563 d = d / (1024 * 1024); 564 } else if (value < 1000*1024*1024) { 565 fmt = "%4.0fM"; 566 d = d / (1024 * 1024); 567 } else { 568 fmt = "%4.2fG"; 569 d = d / (1024.0 * 1024.0 * 1024.0); 570 } 571 break; 572 default: 573 fprintf(stderr, "formatnum: unsupported width %d\n", width); 574 exit(1); 575 break; 576 } 577 snprintf(buf, sizeof(buf), fmt, d); 578 return buf; 579 } 580 581 static void 582 printhdr(void) 583 { 584 int i, num_shown; 585 586 num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs; 587 printf("--procs-- ---memory-- -------paging------ "); 588 if (num_shown > 1) 589 printf("--disks%.*s", 590 num_shown * 4 - 6, 591 "---------------------------------"); 592 else if (num_shown == 1) 593 printf("disk"); 594 printf(" -----faults------ ---cpu---\n"); 595 printf(" r b w fre flt re pi po fr "); 596 for (i = 0; i < num_devices; i++) 597 if ((dev_select[i].selected) 598 && (dev_select[i].selected <= maxshowdevs)) 599 printf(" %c%c%d ", dev_select[i].device_name[0], 600 dev_select[i].device_name[1], 601 dev_select[i].unit_number); 602 printf(" int sys ctx us sy id\n"); 603 hdrcnt = winlines - 2; 604 } 605 606 /* 607 * Force a header to be prepended to the next output. 608 */ 609 static void 610 needhdr(__unused int signo) 611 { 612 613 hdrcnt = 1; 614 } 615 616 static long 617 pct(long top, long bot) 618 { 619 long ans; 620 621 if (bot == 0) 622 return(0); 623 ans = (quad_t)top * 100 / bot; 624 return (ans); 625 } 626 627 #define PCT(top, bot) pct((long)(top), (long)(bot)) 628 629 static void 630 dosum(void) 631 { 632 struct nchstats *nch_tmp, nchstats; 633 size_t vms_size = sizeof(vms); 634 size_t vmm_size = sizeof(vmm); 635 int cpucnt; 636 u_long nchtotal; 637 u_long nchpathtotal; 638 size_t nch_size = sizeof(struct nchstats) * SMP_MAXCPU; 639 640 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) { 641 perror("sysctlbyname: vm.vmstats"); 642 exit(1); 643 } 644 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 645 perror("sysctlbyname: vm.vmstats"); 646 exit(1); 647 } 648 printf("%9u cpu context switches\n", vmm.v_swtch); 649 printf("%9u device interrupts\n", vmm.v_intr); 650 printf("%9u software interrupts\n", vmm.v_soft); 651 printf("%9u traps\n", vmm.v_trap); 652 printf("%9u system calls\n", vmm.v_syscall); 653 printf("%9u kernel threads created\n", vmm.v_kthreads); 654 printf("%9u fork() calls\n", vmm.v_forks); 655 printf("%9u vfork() calls\n", vmm.v_vforks); 656 printf("%9u rfork() calls\n", vmm.v_rforks); 657 printf("%9u exec() calls\n", vmm.v_exec); 658 printf("%9u swap pager pageins\n", vmm.v_swapin); 659 printf("%9u swap pager pages paged in\n", vmm.v_swappgsin); 660 printf("%9u swap pager pageouts\n", vmm.v_swapout); 661 printf("%9u swap pager pages paged out\n", vmm.v_swappgsout); 662 printf("%9u vnode pager pageins\n", vmm.v_vnodein); 663 printf("%9u vnode pager pages paged in\n", vmm.v_vnodepgsin); 664 printf("%9u vnode pager pageouts\n", vmm.v_vnodeout); 665 printf("%9u vnode pager pages paged out\n", vmm.v_vnodepgsout); 666 printf("%9u page daemon wakeups\n", vmm.v_pdwakeups); 667 printf("%9u pages examined by the page daemon\n", vmm.v_pdpages); 668 printf("%9u pages reactivated\n", vmm.v_reactivated); 669 printf("%9u copy-on-write faults\n", vmm.v_cow_faults); 670 printf("%9u copy-on-write optimized faults\n", vmm.v_cow_optim); 671 printf("%9u zero fill pages zeroed\n", vmm.v_zfod); 672 printf("%9u zero fill pages prezeroed\n", vmm.v_ozfod); 673 printf("%9u intransit blocking page faults\n", vmm.v_intrans); 674 printf("%9u total VM faults taken\n", vmm.v_vm_faults); 675 printf("%9u pages affected by kernel thread creation\n", vmm.v_kthreadpages); 676 printf("%9u pages affected by fork()\n", vmm.v_forkpages); 677 printf("%9u pages affected by vfork()\n", vmm.v_vforkpages); 678 printf("%9u pages affected by rfork()\n", vmm.v_rforkpages); 679 printf("%9u pages freed\n", vmm.v_tfree); 680 printf("%9u pages freed by daemon\n", vmm.v_dfree); 681 printf("%9u pages freed by exiting processes\n", vmm.v_pfree); 682 printf("%9u pages active\n", vms.v_active_count); 683 printf("%9u pages inactive\n", vms.v_inactive_count); 684 printf("%9u pages in VM cache\n", vms.v_cache_count); 685 printf("%9u pages wired down\n", vms.v_wire_count); 686 printf("%9u pages free\n", vms.v_free_count); 687 printf("%9u bytes per page\n", vms.v_page_size); 688 printf("%9u global smp invltlbs\n", vmm.v_smpinvltlb); 689 690 if ((nch_tmp = malloc(nch_size)) == NULL) { 691 perror("malloc"); 692 exit(1); 693 } else { 694 if (sysctlbyname("vfs.cache.nchstats", nch_tmp, &nch_size, NULL, 0)) { 695 perror("sysctlbyname vfs.cache.nchstats"); 696 free(nch_tmp); 697 exit(1); 698 } else { 699 if ((nch_tmp = realloc(nch_tmp, nch_size)) == NULL) { 700 perror("realloc"); 701 exit(1); 702 } 703 } 704 } 705 706 cpucnt = nch_size / sizeof(struct nchstats); 707 kvm_nch_cpuagg(nch_tmp, &nchstats, cpucnt); 708 709 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits + 710 nchstats.ncs_badhits + nchstats.ncs_falsehits + 711 nchstats.ncs_miss; 712 nchpathtotal = nchstats.ncs_longhits + nchstats.ncs_longmiss; 713 printf("%9ld total path lookups\n", nchpathtotal); 714 printf("%9ld total component lookups\n", nchtotal); 715 printf( 716 "%9s cache hits (%ld%% pos + %ld%% neg)\n", 717 "", PCT(nchstats.ncs_goodhits, nchtotal), 718 PCT(nchstats.ncs_neghits, nchtotal)); 719 printf("%9s deletions %ld%%, falsehits %ld%%\n", "", 720 PCT(nchstats.ncs_badhits, nchtotal), 721 PCT(nchstats.ncs_falsehits, nchtotal)); 722 free(nch_tmp); 723 } 724 725 #ifdef notyet 726 void 727 doforkst(void) 728 { 729 struct forkstat fks; 730 731 kread(X_FORKSTAT, &fks, sizeof(struct forkstat)); 732 printf("%d forks, %d pages, average %.2f\n", 733 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork); 734 printf("%d vforks, %d pages, average %.2f\n", 735 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork); 736 } 737 #endif 738 739 static void 740 devstats(int dooutput) 741 { 742 int dn; 743 long double transfers_per_second; 744 long double busy_seconds; 745 746 diff_cp_time.cp_user = cp_time.cp_user - old_cp_time.cp_user; 747 diff_cp_time.cp_nice = cp_time.cp_nice - old_cp_time.cp_nice; 748 diff_cp_time.cp_sys = cp_time.cp_sys - old_cp_time.cp_sys; 749 diff_cp_time.cp_intr = cp_time.cp_intr - old_cp_time.cp_intr; 750 diff_cp_time.cp_idle = cp_time.cp_idle - old_cp_time.cp_idle; 751 old_cp_time = cp_time; 752 753 busy_seconds = compute_etime(cur.busy_time, last.busy_time); 754 755 for (dn = 0; dn < num_devices; dn++) { 756 int di; 757 758 if ((dev_select[dn].selected == 0) 759 || (dev_select[dn].selected > maxshowdevs)) 760 continue; 761 762 di = dev_select[dn].position; 763 764 if (compute_stats(&cur.dinfo->devices[di], 765 &last.dinfo->devices[di], busy_seconds, 766 NULL, NULL, NULL, 767 NULL, &transfers_per_second, NULL, 768 NULL, NULL) != 0) 769 errx(1, "%s", devstat_errbuf); 770 771 if (dooutput) 772 printf("%s ", formatnum(transfers_per_second, 4)); 773 } 774 } 775 776 static void 777 cpustats(void) 778 { 779 uint64_t total; 780 double totusage; 781 782 total = diff_cp_time.cp_user + diff_cp_time.cp_nice + 783 diff_cp_time.cp_sys + diff_cp_time.cp_intr + diff_cp_time.cp_idle; 784 785 if (total) 786 totusage = 100.0 / total; 787 else 788 totusage = 0; 789 printf("%2.0f ", 790 (diff_cp_time.cp_user + diff_cp_time.cp_nice) * totusage); 791 printf("%2.0f ", 792 (diff_cp_time.cp_sys + diff_cp_time.cp_intr) * totusage); 793 printf("%2.0f", 794 diff_cp_time.cp_idle * totusage); 795 } 796 797 static void 798 dointr(void) 799 { 800 u_long *intrcnt, uptime; 801 u_int64_t inttotal; 802 size_t nintr, inamlen, i, size; 803 int nwidth; 804 char *intrstr; 805 char **intrname; 806 807 uptime = getuptime(); 808 if (sysctlbyname("hw.intrnames", NULL, &inamlen, NULL, 0) != 0) 809 errx(1, "sysctlbyname"); 810 intrstr = malloc(inamlen); 811 if (intrstr == NULL) 812 err(1, "malloc"); 813 sysctlbyname("hw.intrnames", intrstr, &inamlen, NULL, 0); 814 for (nintr = 0, i = 0; i < inamlen; ++i) { 815 if (intrstr[i] == 0) 816 nintr++; 817 } 818 intrname = malloc(nintr * sizeof(char *)); 819 for (i = 0; i < nintr; ++i) { 820 intrname[i] = intrstr; 821 intrstr += strlen(intrstr) + 1; 822 } 823 824 size = nintr * sizeof(*intrcnt); 825 intrcnt = calloc(nintr, sizeof(*intrcnt)); 826 if (intrcnt == NULL) 827 err(1, "malloc"); 828 sysctlbyname("hw.intrcnt", intrcnt, &size, NULL, 0); 829 830 nwidth = 21; 831 for (i = 0; i < nintr; ++i) { 832 if (nwidth < (int)strlen(intrname[i])) 833 nwidth = (int)strlen(intrname[i]); 834 } 835 if (verbose) nwidth += 12; 836 837 printf("%-*.*s %11s %10s\n", 838 nwidth, nwidth, "interrupt", "total", "rate"); 839 inttotal = 0; 840 for (i = 0; i < nintr; ++i) { 841 int named; 842 char *infop, irqinfo[72]; 843 844 if ((named = strncmp(intrname[i], "irq", 3)) != 0 || 845 intrcnt[i] > 0) { 846 infop = intrname[i]; 847 if (verbose) { 848 ssize_t irq, cpu; 849 850 irq = i % MAX_INTS; 851 cpu = i / MAX_INTS; 852 if (named) { 853 snprintf(irqinfo, sizeof(irqinfo), 854 "irq%-3zd %3zd: %s", 855 irq, cpu, intrname[i]); 856 } else { 857 snprintf(irqinfo, sizeof(irqinfo), 858 "irq%-3zd %3zd: ", irq, cpu); 859 } 860 infop = irqinfo; 861 } 862 printf("%-*.*s %11lu %10lu\n", 863 nwidth, nwidth, infop, 864 intrcnt[i], intrcnt[i] / uptime); 865 } 866 inttotal += intrcnt[i]; 867 } 868 printf("%-*.*s %11llu %10llu\n", 869 nwidth, nwidth, "Total", 870 (long long)inttotal, (long long)(inttotal / uptime)); 871 } 872 873 #define MAX_KMSTATS 1024 874 875 enum ksuse { KSINUSE, KSMEMUSE }; 876 877 static long 878 cpuagg(struct malloc_type *ks, enum ksuse use) 879 { 880 int i; 881 long ttl; 882 883 ttl = 0; 884 885 switch(use) { 886 case KSINUSE: 887 for (i = 0; i < SMP_MAXCPU; ++i) 888 ttl += ks->ks_use[i].inuse; 889 break; 890 case KSMEMUSE: 891 for (i = 0; i < SMP_MAXCPU; ++i) 892 ttl += ks->ks_use[i].memuse; 893 break; 894 } 895 return(ttl); 896 } 897 898 static void 899 domem(void) 900 { 901 struct malloc_type *ks; 902 int i, j; 903 int first, nkms; 904 long totuse = 0, totfree = 0, totreq = 0; 905 struct malloc_type kmemstats[MAX_KMSTATS], *kmsp; 906 char buf[1024]; 907 908 kread(X_KMEMSTATISTICS, &kmsp, sizeof(kmsp)); 909 for (nkms = 0; nkms < MAX_KMSTATS && kmsp != NULL; nkms++) { 910 if (sizeof(kmemstats[0]) != kvm_read(kd, (u_long)kmsp, 911 &kmemstats[nkms], sizeof(kmemstats[0]))) 912 err(1, "kvm_read(%p)", (void *)kmsp); 913 if (sizeof(buf) != kvm_read(kd, 914 (u_long)kmemstats[nkms].ks_shortdesc, buf, sizeof(buf))) 915 err(1, "kvm_read(%p)", 916 kmemstats[nkms].ks_shortdesc); 917 buf[sizeof(buf) - 1] = '\0'; 918 kmemstats[nkms].ks_shortdesc = strdup(buf); 919 kmsp = kmemstats[nkms].ks_next; 920 } 921 if (kmsp != NULL) 922 warnx("truncated to the first %d memory types", nkms); 923 924 printf( 925 "\nMemory statistics by type Type Kern\n"); 926 printf( 927 " Type InUse MemUse HighUse Limit Requests Limit Limit\n"); 928 for (i = 0, ks = &kmemstats[0]; i < nkms; i++, ks++) { 929 long ks_inuse; 930 long ks_memuse; 931 932 if (ks->ks_calls == 0) 933 continue; 934 935 ks_inuse = cpuagg(ks, KSINUSE); 936 ks_memuse = cpuagg(ks, KSMEMUSE); 937 938 if (ks->ks_maxused > 99*ONEMB || 939 ks_inuse > 99*ONEMB || 940 ks_memuse > 99*ONEMB) { 941 printf("%19s%7ld%7ldM%7ldM%11zuM%10jd%5u%6u", 942 ks->ks_shortdesc, 943 ks_inuse, (ks_memuse + ONEMB - 1) / ONEMB, 944 (ks->ks_maxused + ONEMB - 1) / ONEMB, 945 (ks->ks_limit + ONEMB - 1) / ONEMB, 946 (intmax_t)ks->ks_calls, 947 ks->ks_limblocks, ks->ks_mapblocks); 948 } else { 949 printf("%19s%7ld%7ldK%7ldK%11zuM%10jd%5u%6u", 950 ks->ks_shortdesc, 951 ks_inuse, (ks_memuse + ONEKB - 1) / ONEKB, 952 (ks->ks_maxused + ONEKB - 1) / ONEKB, 953 (ks->ks_limit + ONEMB) / ONEMB, 954 (intmax_t)ks->ks_calls, 955 ks->ks_limblocks, ks->ks_mapblocks); 956 } 957 first = 1; 958 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) { 959 if ((ks->ks_size & j) == 0) 960 continue; 961 if (first) 962 printf(" "); 963 else 964 printf(","); 965 if(j<1024) 966 printf("%d",j); 967 else 968 printf("%dK",j>>10); 969 first = 0; 970 } 971 printf("\n"); 972 totuse += cpuagg(ks, KSMEMUSE); 973 totreq += ks->ks_calls; 974 } 975 printf("\nMemory Totals: In Use Free Requests\n"); 976 977 if (totuse > 99*ONEMB || totfree > 99*ONEMB) { 978 printf(" %7ldM %6ldM %8ld\n", 979 (totuse + ONEMB - 1) / ONEMB, 980 (totfree + ONEMB - 1) / ONEMB, totreq); 981 } else { 982 printf(" %7ldK %6ldK %8ld\n", 983 (totuse + ONEKB - 1) / ONEKB, 984 (totfree + ONEKB - 1) / ONEKB, totreq); 985 } 986 } 987 988 #define MAXSAVE 16 989 990 static void 991 dozmem(u_int interval, int reps) 992 { 993 struct zlist zlist; 994 struct vm_zone *kz; 995 struct vm_zone zone; 996 struct vm_zone copy; 997 struct vm_zone save[MAXSAVE]; 998 char name[64]; 999 size_t namesz; 1000 int i; 1001 int first = 1; 1002 1003 bzero(save, sizeof(save)); 1004 1005 again: 1006 kread(X_ZLIST, &zlist, sizeof(zlist)); 1007 kz = LIST_FIRST(&zlist); 1008 i = 0; 1009 1010 while (kz) { 1011 if (kvm_read(kd, (intptr_t)kz, &zone, sizeof(zone)) != 1012 (ssize_t)sizeof(zone)) { 1013 perror("kvm_read"); 1014 break; 1015 } 1016 copy = zone; 1017 zone.znalloc -= save[i].znalloc; 1018 save[i] = copy; 1019 namesz = sizeof(name); 1020 if (kvm_readstr(kd, (intptr_t)zone.zname, name, &namesz) == NULL) { 1021 perror("kvm_read"); 1022 break; 1023 } 1024 if (first && interval) { 1025 /* do nothing */ 1026 } else if (zone.zmax) { 1027 printf("%-10s %9ld/%9ld %5ldM used" 1028 " use=%-9lu %6.2f%%\n", 1029 name, 1030 (long)(zone.ztotal - zone.zfreecnt), 1031 (long)zone.zmax, 1032 (long)(zone.ztotal - zone.zfreecnt) * 1033 zone.zsize / (1024 * 1024), 1034 (unsigned long)zone.znalloc, 1035 (double)(zone.ztotal - zone.zfreecnt) * 1036 100.0 / (double)zone.zmax); 1037 } else { 1038 printf("%-10s %9ld %5ldM used" 1039 " use=%-9lu\n", 1040 name, 1041 (long)(zone.ztotal - zone.zfreecnt), 1042 (long)(zone.ztotal - zone.zfreecnt) * 1043 zone.zsize / (1024 * 1024), 1044 (unsigned long)zone.znalloc); 1045 } 1046 kz = LIST_NEXT(&zone, zlink); 1047 ++i; 1048 } 1049 if (reps) { 1050 first = 0; 1051 fflush(stdout); 1052 usleep(interval * 1000); 1053 --reps; 1054 printf("\n"); 1055 goto again; 1056 } 1057 } 1058 1059 /* 1060 * kread reads something from the kernel, given its nlist index. 1061 */ 1062 static void 1063 kread(int nlx, void *addr, size_t size) 1064 { 1065 const char *sym; 1066 1067 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) { 1068 sym = namelist[nlx].n_name; 1069 if (*sym == '_') 1070 ++sym; 1071 errx(1, "symbol %s not defined", sym); 1072 } 1073 if (kvm_read(kd, namelist[nlx].n_value, addr, size) != (ssize_t)size) { 1074 sym = namelist[nlx].n_name; 1075 if (*sym == '_') 1076 ++sym; 1077 errx(1, "%s: %s", sym, kvm_geterr(kd)); 1078 } 1079 } 1080 1081 static void 1082 usage(void) 1083 { 1084 fprintf(stderr, "%s%s", 1085 "usage: vmstat [-imsvz] [-c count] [-M core] [-N system] [-w wait]\n", 1086 " [-n devs] [disks]\n"); 1087 exit(1); 1088 } 1089