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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#) Copyright (c) 1980, 1986, 1991, 1993 The Regents of the University of California. All rights reserved. 34 * @(#)vmstat.c 8.1 (Berkeley) 6/6/93 35 * $FreeBSD: src/usr.bin/vmstat/vmstat.c,v 1.38.2.4 2001/07/31 19:52:41 tmm Exp $ 36 * $DragonFly: src/usr.bin/vmstat/vmstat.c,v 1.16 2005/02/14 13:18:39 joerg Exp $ 37 */ 38 39 #define _KERNEL_STRUCTURES 40 41 #include <sys/param.h> 42 #include <sys/time.h> 43 #include <sys/user.h> 44 #include <sys/uio.h> 45 #include <sys/namei.h> 46 #include <sys/malloc.h> 47 #include <sys/signal.h> 48 #include <sys/fcntl.h> 49 #include <sys/ioctl.h> 50 #include <sys/sysctl.h> 51 #include <sys/vmmeter.h> 52 53 #include <vm/vm_param.h> 54 55 #include <ctype.h> 56 #include <err.h> 57 #include <errno.h> 58 #include <kinfo.h> 59 #include <kvm.h> 60 #include <limits.h> 61 #include <nlist.h> 62 #include <paths.h> 63 #include <stdio.h> 64 #include <stdlib.h> 65 #include <string.h> 66 #include <sysexits.h> 67 #include <time.h> 68 #include <unistd.h> 69 #include <devstat.h> 70 71 static struct nlist namelist[] = { 72 #define X_BOOTTIME 0 73 { "_boottime" }, 74 #define X_NCHSTATS 1 75 { "_nchstats" }, 76 #define X_INTRNAMES 2 77 { "_intrnames" }, 78 #define X_EINTRNAMES 3 79 { "_eintrnames" }, 80 #define X_INTRCNT 4 81 { "_intrcnt" }, 82 #define X_EINTRCNT 5 83 { "_eintrcnt" }, 84 #define X_KMEMSTATISTICS 6 85 { "_kmemstatistics" }, 86 #define X_ZLIST 7 87 { "_zlist" }, 88 #ifdef notyet 89 #define X_DEFICIT 8 90 { "_deficit" }, 91 #define X_FORKSTAT 9 92 { "_forkstat" }, 93 #define X_REC 10 94 { "_rectime" }, 95 #define X_PGIN 11 96 { "_pgintime" }, 97 #define X_XSTATS 12 98 { "_xstats" }, 99 #define X_END 13 100 #else 101 #define X_END 8 102 #endif 103 { "" }, 104 }; 105 106 struct statinfo cur, last; 107 int num_devices, maxshowdevs; 108 long generation; 109 struct device_selection *dev_select; 110 int num_selected; 111 struct devstat_match *matches; 112 int num_matches = 0; 113 int num_devices_specified, num_selections; 114 long select_generation; 115 char **specified_devices; 116 devstat_select_mode select_mode; 117 118 struct vmmeter vmm, ovmm; 119 struct vmstats vms, ovms; 120 121 int winlines = 20; 122 int nflag = 0; 123 124 kvm_t *kd; 125 126 struct kinfo_cputime cp_time, old_cp_time, diff_cp_time; 127 128 #define FORKSTAT 0x01 129 #define INTRSTAT 0x02 130 #define MEMSTAT 0x04 131 #define SUMSTAT 0x08 132 #define TIMESTAT 0x10 133 #define VMSTAT 0x20 134 #define ZMEMSTAT 0x40 135 136 static void cpustats(void); 137 static void dointr(void); 138 static void domem(void); 139 static void dosum(void); 140 static void dozmem(void); 141 static void dovmstat(u_int interval, int reps); 142 static void kread(int nlx, void *addr, size_t size); 143 static void usage(void); 144 static char **getdrivedata(char **argv); 145 static long getuptime(void); 146 static void needhdr(int signo); 147 static long pct(long top, long bot); 148 149 #ifdef notyet 150 static void dotimes(void); /* Not implemented */ 151 static void doforkst(void); 152 #endif 153 static void printhdr(void); 154 static void devstats(void); 155 156 int 157 main(int argc, char **argv) 158 { 159 int c, todo; 160 u_int interval; 161 int reps; 162 char *memf, *nlistf; 163 char errbuf[_POSIX2_LINE_MAX]; 164 165 memf = nlistf = NULL; 166 interval = reps = todo = 0; 167 maxshowdevs = 2; 168 while ((c = getopt(argc, argv, "c:fiM:mN:n:p:stw:z")) != -1) { 169 switch (c) { 170 case 'c': 171 reps = atoi(optarg); 172 break; 173 case 'f': 174 #ifdef notyet 175 todo |= FORKSTAT; 176 #else 177 errx(EX_USAGE, "sorry, -f is not (re)implemented yet"); 178 #endif 179 break; 180 case 'i': 181 todo |= INTRSTAT; 182 break; 183 case 'M': 184 memf = optarg; 185 break; 186 case 'm': 187 todo |= MEMSTAT; 188 break; 189 case 'N': 190 nlistf = optarg; 191 break; 192 case 'n': 193 nflag = 1; 194 maxshowdevs = atoi(optarg); 195 if (maxshowdevs < 0) 196 errx(1, "number of devices %d is < 0", 197 maxshowdevs); 198 break; 199 case 'p': 200 if (buildmatch(optarg, &matches, &num_matches) != 0) 201 errx(1, "%s", devstat_errbuf); 202 break; 203 case 's': 204 todo |= SUMSTAT; 205 break; 206 case 't': 207 #ifdef notyet 208 todo |= TIMESTAT; 209 #else 210 errx(EX_USAGE, "sorry, -t is not (re)implemented yet"); 211 #endif 212 break; 213 case 'w': 214 interval = atoi(optarg); 215 break; 216 case 'z': 217 todo |= ZMEMSTAT; 218 break; 219 case '?': 220 default: 221 usage(); 222 } 223 } 224 argc -= optind; 225 argv += optind; 226 227 if (todo == 0) 228 todo = VMSTAT; 229 230 /* 231 * Discard setgid privileges if not the running kernel so that bad 232 * guys can't print interesting stuff from kernel memory. 233 */ 234 if (nlistf != NULL || memf != NULL) 235 setgid(getgid()); 236 237 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 238 if (kd == 0) 239 errx(1, "kvm_openfiles: %s", errbuf); 240 241 if ((c = kvm_nlist(kd, namelist)) != 0) { 242 if (c > 0) { 243 warnx("undefined symbols:"); 244 for (c = 0; c < (int)__arysize(namelist); c++) 245 if (namelist[c].n_type == 0) 246 fprintf(stderr, " %s", 247 namelist[c].n_name); 248 fputc('\n', stderr); 249 } else 250 warnx("kvm_nlist: %s", kvm_geterr(kd)); 251 exit(1); 252 } 253 254 if (todo & VMSTAT) { 255 struct winsize winsize; 256 257 /* 258 * Make sure that the userland devstat version matches the 259 * kernel devstat version. If not, exit and print a 260 * message informing the user of his mistake. 261 */ 262 if (checkversion() < 0) 263 errx(1, "%s", devstat_errbuf); 264 265 266 argv = getdrivedata(argv); 267 winsize.ws_row = 0; 268 ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize); 269 if (winsize.ws_row > 0) 270 winlines = winsize.ws_row; 271 272 } 273 274 #define BACKWARD_COMPATIBILITY 275 #ifdef BACKWARD_COMPATIBILITY 276 if (*argv) { 277 interval = atoi(*argv); 278 if (*++argv) 279 reps = atoi(*argv); 280 } 281 #endif 282 283 if (interval) { 284 if (!reps) 285 reps = -1; 286 } else if (reps) 287 interval = 1; 288 289 #ifdef notyet 290 if (todo & FORKSTAT) 291 doforkst(); 292 #endif 293 if (todo & MEMSTAT) 294 domem(); 295 if (todo & ZMEMSTAT) 296 dozmem(); 297 if (todo & SUMSTAT) 298 dosum(); 299 #ifdef notyet 300 if (todo & TIMESTAT) 301 dotimes(); 302 #endif 303 if (todo & INTRSTAT) 304 dointr(); 305 if (todo & VMSTAT) 306 dovmstat(interval, reps); 307 exit(0); 308 } 309 310 static char ** 311 getdrivedata(char **argv) 312 { 313 if ((num_devices = getnumdevs()) < 0) 314 errx(1, "%s", devstat_errbuf); 315 316 cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 317 last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 318 bzero(cur.dinfo, sizeof(struct devinfo)); 319 bzero(last.dinfo, sizeof(struct devinfo)); 320 321 if (getdevs(&cur) == -1) 322 errx(1, "%s", devstat_errbuf); 323 324 num_devices = cur.dinfo->numdevs; 325 generation = cur.dinfo->generation; 326 327 specified_devices = (char **)malloc(sizeof(char *)); 328 for (num_devices_specified = 0; *argv; ++argv) { 329 if (isdigit(**argv)) 330 break; 331 num_devices_specified++; 332 specified_devices = (char **)realloc(specified_devices, 333 sizeof(char *) * 334 num_devices_specified); 335 specified_devices[num_devices_specified - 1] = *argv; 336 } 337 dev_select = NULL; 338 339 if (nflag == 0 && maxshowdevs < num_devices_specified) 340 maxshowdevs = num_devices_specified; 341 342 /* 343 * People are generally only interested in disk statistics when 344 * they're running vmstat. So, that's what we're going to give 345 * them if they don't specify anything by default. We'll also give 346 * them any other random devices in the system so that we get to 347 * maxshowdevs devices, if that many devices exist. If the user 348 * specifies devices on the command line, either through a pattern 349 * match or by naming them explicitly, we will give the user only 350 * those devices. 351 */ 352 if ((num_devices_specified == 0) && (num_matches == 0)) { 353 if (buildmatch("da", &matches, &num_matches) != 0) 354 errx(1, "%s", devstat_errbuf); 355 356 select_mode = DS_SELECT_ADD; 357 } else 358 select_mode = DS_SELECT_ONLY; 359 360 /* 361 * At this point, selectdevs will almost surely indicate that the 362 * device list has changed, so we don't look for return values of 0 363 * or 1. If we get back -1, though, there is an error. 364 */ 365 if (selectdevs(&dev_select, &num_selected, &num_selections, 366 &select_generation, generation, cur.dinfo->devices, 367 num_devices, matches, num_matches, specified_devices, 368 num_devices_specified, select_mode, 369 maxshowdevs, 0) == -1) 370 errx(1, "%s", devstat_errbuf); 371 372 return(argv); 373 } 374 375 static long 376 getuptime(void) 377 { 378 static time_t now, boottime; 379 time_t uptime; 380 381 if (boottime == 0) 382 kread(X_BOOTTIME, &boottime, sizeof(boottime)); 383 time(&now); 384 uptime = now - boottime; 385 if (uptime <= 0 || uptime > 60*60*24*365*10) 386 errx(1, "time makes no sense; namelist must be wrong"); 387 return(uptime); 388 } 389 390 int hdrcnt; 391 392 static void 393 dovmstat(u_int interval, int reps) 394 { 395 struct vmtotal total; 396 time_t uptime, halfuptime; 397 struct devinfo *tmp_dinfo; 398 int vmm_size = sizeof(vmm); 399 int vms_size = sizeof(vms); 400 int vmt_size = sizeof(total); 401 402 uptime = getuptime(); 403 halfuptime = uptime / 2; 404 signal(SIGCONT, needhdr); 405 406 for (hdrcnt = 1;;) { 407 if (!--hdrcnt) 408 printhdr(); 409 if (kinfo_get_sched_cputime(&cp_time)) 410 err(1, "kinfo_get_sched_cputime"); 411 412 tmp_dinfo = last.dinfo; 413 last.dinfo = cur.dinfo; 414 cur.dinfo = tmp_dinfo; 415 last.busy_time = cur.busy_time; 416 417 /* 418 * Here what we want to do is refresh our device stats. 419 * getdevs() returns 1 when the device list has changed. 420 * If the device list has changed, we want to go through 421 * the selection process again, in case a device that we 422 * were previously displaying has gone away. 423 */ 424 switch (getdevs(&cur)) { 425 case -1: 426 errx(1, "%s", devstat_errbuf); 427 break; 428 case 1: { 429 int retval; 430 431 num_devices = cur.dinfo->numdevs; 432 generation = cur.dinfo->generation; 433 434 retval = selectdevs(&dev_select, &num_selected, 435 &num_selections, &select_generation, 436 generation, cur.dinfo->devices, 437 num_devices, matches, num_matches, 438 specified_devices, 439 num_devices_specified, select_mode, 440 maxshowdevs, 0); 441 switch (retval) { 442 case -1: 443 errx(1, "%s", devstat_errbuf); 444 break; 445 case 1: 446 printhdr(); 447 break; 448 default: 449 break; 450 } 451 } 452 default: 453 break; 454 } 455 456 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) { 457 perror("sysctlbyname: vm.vmstats"); 458 exit(1); 459 } 460 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 461 perror("sysctlbyname: vm.vmmeter"); 462 exit(1); 463 } 464 if (sysctlbyname("vm.vmtotal", &total, &vmt_size, NULL, 0)) { 465 perror("sysctlbyname: vm.vmtotal"); 466 exit(1); 467 } 468 printf("%2d %1d %1d", 469 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw); 470 #define vmstat_pgtok(a) ((a) * vms.v_page_size >> 10) 471 #define rate(x) (((x) + halfuptime) / uptime) /* round */ 472 printf(" %7ld %6ld ", 473 (long)vmstat_pgtok(total.t_avm), (long)vmstat_pgtok(total.t_free)); 474 printf("%4lu ", 475 (u_long)rate(vmm.v_vm_faults - ovmm.v_vm_faults)); 476 printf("%3lu ", 477 (u_long)rate(vmm.v_reactivated - ovmm.v_reactivated)); 478 printf("%3lu ", 479 (u_long)rate(vmm.v_swapin + vmm.v_vnodein - 480 (ovmm.v_swapin + ovmm.v_vnodein))); 481 printf("%3lu ", 482 (u_long)rate(vmm.v_swapout + vmm.v_vnodeout - 483 (ovmm.v_swapout + ovmm.v_vnodeout))); 484 printf("%3lu ", 485 (u_long)rate(vmm.v_tfree - ovmm.v_tfree)); 486 printf("%3lu ", 487 (u_long)rate(vmm.v_pdpages - ovmm.v_pdpages)); 488 devstats(); 489 printf("%4lu %4lu %3lu ", 490 (u_long)rate(vmm.v_intr - ovmm.v_intr), 491 (u_long)rate(vmm.v_syscall - ovmm.v_syscall), 492 (u_long)rate(vmm.v_swtch - ovmm.v_swtch)); 493 cpustats(); 494 printf("\n"); 495 fflush(stdout); 496 if (reps >= 0 && --reps <= 0) 497 break; 498 ovmm = vmm; 499 uptime = interval; 500 /* 501 * We round upward to avoid losing low-frequency events 502 * (i.e., >= 1 per interval but < 1 per second). 503 */ 504 if (interval != 1) 505 halfuptime = (uptime + 1) / 2; 506 else 507 halfuptime = 0; 508 sleep(interval); 509 } 510 } 511 512 static void 513 printhdr(void) 514 { 515 int i, num_shown; 516 517 num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs; 518 printf(" procs memory page%*s", 19, ""); 519 if (num_shown > 1) 520 printf(" disks %*s", num_shown * 4 - 7, ""); 521 else if (num_shown == 1) 522 printf("disk"); 523 printf(" faults cpu\n"); 524 printf(" r b w avm fre flt re pi po fr sr "); 525 for (i = 0; i < num_devices; i++) 526 if ((dev_select[i].selected) 527 && (dev_select[i].selected <= maxshowdevs)) 528 printf("%c%c%d ", dev_select[i].device_name[0], 529 dev_select[i].device_name[1], 530 dev_select[i].unit_number); 531 printf(" in sy cs us sy id\n"); 532 hdrcnt = winlines - 2; 533 } 534 535 /* 536 * Force a header to be prepended to the next output. 537 */ 538 static void 539 needhdr(__unused int signo) 540 { 541 542 hdrcnt = 1; 543 } 544 545 static long 546 pct(long top, long bot) 547 { 548 long ans; 549 550 if (bot == 0) 551 return(0); 552 ans = (quad_t)top * 100 / bot; 553 return (ans); 554 } 555 556 #define PCT(top, bot) pct((long)(top), (long)(bot)) 557 558 static void 559 dosum(void) 560 { 561 struct nchstats *nch_tmp, nchstats; 562 int vms_size = sizeof(vms); 563 int vmm_size = sizeof(vmm); 564 int cpucnt; 565 u_long nchtotal; 566 size_t nch_size = sizeof(struct nchstats) * SMP_MAXCPU; 567 568 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) { 569 perror("sysctlbyname: vm.vmstats"); 570 exit(1); 571 } 572 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 573 perror("sysctlbyname: vm.vmstats"); 574 exit(1); 575 } 576 printf("%9u cpu context switches\n", vmm.v_swtch); 577 printf("%9u device interrupts\n", vmm.v_intr); 578 printf("%9u software interrupts\n", vmm.v_soft); 579 printf("%9u traps\n", vmm.v_trap); 580 printf("%9u system calls\n", vmm.v_syscall); 581 printf("%9u kernel threads created\n", vmm.v_kthreads); 582 printf("%9u fork() calls\n", vmm.v_forks); 583 printf("%9u vfork() calls\n", vmm.v_vforks); 584 printf("%9u rfork() calls\n", vmm.v_rforks); 585 printf("%9u exec() calls\n", vmm.v_exec); 586 printf("%9u swap pager pageins\n", vmm.v_swapin); 587 printf("%9u swap pager pages paged in\n", vmm.v_swappgsin); 588 printf("%9u swap pager pageouts\n", vmm.v_swapout); 589 printf("%9u swap pager pages paged out\n", vmm.v_swappgsout); 590 printf("%9u vnode pager pageins\n", vmm.v_vnodein); 591 printf("%9u vnode pager pages paged in\n", vmm.v_vnodepgsin); 592 printf("%9u vnode pager pageouts\n", vmm.v_vnodeout); 593 printf("%9u vnode pager pages paged out\n", vmm.v_vnodepgsout); 594 printf("%9u page daemon wakeups\n", vmm.v_pdwakeups); 595 printf("%9u pages examined by the page daemon\n", vmm.v_pdpages); 596 printf("%9u pages reactivated\n", vmm.v_reactivated); 597 printf("%9u copy-on-write faults\n", vmm.v_cow_faults); 598 printf("%9u copy-on-write optimized faults\n", vmm.v_cow_optim); 599 printf("%9u zero fill pages zeroed\n", vmm.v_zfod); 600 printf("%9u zero fill pages prezeroed\n", vmm.v_ozfod); 601 printf("%9u intransit blocking page faults\n", vmm.v_intrans); 602 printf("%9u total VM faults taken\n", vmm.v_vm_faults); 603 printf("%9u pages affected by kernel thread creation\n", vmm.v_kthreadpages); 604 printf("%9u pages affected by fork()\n", vmm.v_forkpages); 605 printf("%9u pages affected by vfork()\n", vmm.v_vforkpages); 606 printf("%9u pages affected by rfork()\n", vmm.v_rforkpages); 607 printf("%9u pages freed\n", vmm.v_tfree); 608 printf("%9u pages freed by daemon\n", vmm.v_dfree); 609 printf("%9u pages freed by exiting processes\n", vmm.v_pfree); 610 printf("%9u pages active\n", vms.v_active_count); 611 printf("%9u pages inactive\n", vms.v_inactive_count); 612 printf("%9u pages in VM cache\n", vms.v_cache_count); 613 printf("%9u pages wired down\n", vms.v_wire_count); 614 printf("%9u pages free\n", vms.v_free_count); 615 printf("%9u bytes per page\n", vms.v_page_size); 616 617 if ((nch_tmp = malloc(nch_size)) == NULL) { 618 perror("malloc"); 619 exit(1); 620 } else { 621 if (sysctlbyname("vfs.cache.nchstats", nch_tmp, &nch_size, NULL, 0)) { 622 perror("sysctlbyname vfs.cache.nchstats"); 623 free(nch_tmp); 624 exit(1); 625 } else { 626 if ((nch_tmp = realloc(nch_tmp, nch_size)) == NULL) { 627 perror("realloc"); 628 exit(1); 629 } 630 } 631 } 632 633 cpucnt = nch_size / sizeof(struct nchstats); 634 kvm_nch_cpuagg(nch_tmp, &nchstats, cpucnt); 635 636 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits + 637 nchstats.ncs_badhits + nchstats.ncs_falsehits + 638 nchstats.ncs_miss + nchstats.ncs_long; 639 printf("%9ld total name lookups\n", nchtotal); 640 printf( 641 "%9s cache hits (%ld%% pos + %ld%% neg) system %ld%% per-directory\n", 642 "", PCT(nchstats.ncs_goodhits, nchtotal), 643 PCT(nchstats.ncs_neghits, nchtotal), 644 PCT(nchstats.ncs_pass2, nchtotal)); 645 printf("%9s deletions %ld%%, falsehits %ld%%, toolong %ld%%\n", "", 646 PCT(nchstats.ncs_badhits, nchtotal), 647 PCT(nchstats.ncs_falsehits, nchtotal), 648 PCT(nchstats.ncs_long, nchtotal)); 649 free(nch_tmp); 650 } 651 652 #ifdef notyet 653 void 654 doforkst(void) 655 { 656 struct forkstat fks; 657 658 kread(X_FORKSTAT, &fks, sizeof(struct forkstat)); 659 printf("%d forks, %d pages, average %.2f\n", 660 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork); 661 printf("%d vforks, %d pages, average %.2f\n", 662 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork); 663 } 664 #endif 665 666 static void 667 devstats(void) 668 { 669 int dn; 670 long double transfers_per_second; 671 long double busy_seconds; 672 673 diff_cp_time.cp_user = cp_time.cp_user - old_cp_time.cp_user; 674 diff_cp_time.cp_nice = cp_time.cp_nice - old_cp_time.cp_nice; 675 diff_cp_time.cp_sys = cp_time.cp_sys - old_cp_time.cp_sys; 676 diff_cp_time.cp_intr = cp_time.cp_intr - old_cp_time.cp_intr; 677 diff_cp_time.cp_idle = cp_time.cp_idle - old_cp_time.cp_idle; 678 old_cp_time = cp_time; 679 680 busy_seconds = compute_etime(cur.busy_time, last.busy_time); 681 682 for (dn = 0; dn < num_devices; dn++) { 683 int di; 684 685 if ((dev_select[dn].selected == 0) 686 || (dev_select[dn].selected > maxshowdevs)) 687 continue; 688 689 di = dev_select[dn].position; 690 691 if (compute_stats(&cur.dinfo->devices[di], 692 &last.dinfo->devices[di], busy_seconds, 693 NULL, NULL, NULL, 694 NULL, &transfers_per_second, NULL, 695 NULL, NULL) != 0) 696 errx(1, "%s", devstat_errbuf); 697 698 printf("%3.0Lf ", transfers_per_second); 699 } 700 } 701 702 static void 703 cpustats(void) 704 { 705 uint64_t total; 706 double totusage; 707 708 total = diff_cp_time.cp_user + diff_cp_time.cp_nice + 709 diff_cp_time.cp_sys + diff_cp_time.cp_intr + diff_cp_time.cp_idle; 710 711 if (total) 712 totusage = 100.0 / total; 713 else 714 totusage = 0; 715 printf("%2.0f ", 716 (diff_cp_time.cp_user + diff_cp_time.cp_nice) * totusage); 717 printf("%2.0f ", 718 (diff_cp_time.cp_sys + diff_cp_time.cp_intr) * totusage); 719 printf("%2.0f", 720 diff_cp_time.cp_idle * totusage); 721 } 722 723 static void 724 dointr(void) 725 { 726 u_long *intrcnt, uptime; 727 u_int64_t inttotal; 728 int nintr, inamlen; 729 char *intrname; 730 731 uptime = getuptime(); 732 nintr = namelist[X_EINTRCNT].n_value - namelist[X_INTRCNT].n_value; 733 inamlen = 734 namelist[X_EINTRNAMES].n_value - namelist[X_INTRNAMES].n_value; 735 intrcnt = malloc((size_t)nintr); 736 intrname = malloc((size_t)inamlen); 737 if (intrcnt == NULL || intrname == NULL) 738 errx(1, "malloc"); 739 kread(X_INTRCNT, intrcnt, (size_t)nintr); 740 kread(X_INTRNAMES, intrname, (size_t)inamlen); 741 printf("interrupt total rate\n"); 742 inttotal = 0; 743 nintr /= sizeof(long); 744 while (--nintr >= 0) { 745 if (intrname[0] || *intrcnt) { 746 printf("%-12s %20lu %10lu\n", intrname, 747 *intrcnt, *intrcnt / uptime); 748 } 749 intrname += strlen(intrname) + 1; 750 inttotal += *intrcnt++; 751 } 752 printf("Total %20llu %10llu\n", inttotal, 753 inttotal / (u_int64_t) uptime); 754 } 755 756 #define MAX_KMSTATS 200 757 758 static 759 long 760 cpuagg(long *ary) 761 { 762 int i; 763 long ttl; 764 765 for (i = ttl = 0; i < SMP_MAXCPU; ++i) 766 ttl += ary[i]; 767 return(ttl); 768 } 769 770 static void 771 domem(void) 772 { 773 struct malloc_type *ks; 774 int i, j; 775 int first, nkms; 776 long totuse = 0, totfree = 0, totreq = 0; 777 struct malloc_type kmemstats[MAX_KMSTATS], *kmsp; 778 char buf[1024]; 779 780 kread(X_KMEMSTATISTICS, &kmsp, sizeof(kmsp)); 781 for (nkms = 0; nkms < MAX_KMSTATS && kmsp != NULL; nkms++) { 782 if (sizeof(kmemstats[0]) != kvm_read(kd, (u_long)kmsp, 783 &kmemstats[nkms], sizeof(kmemstats[0]))) 784 err(1, "kvm_read(%p)", (void *)kmsp); 785 if (sizeof(buf) != kvm_read(kd, 786 (u_long)kmemstats[nkms].ks_shortdesc, buf, sizeof(buf))) 787 err(1, "kvm_read(%p)", 788 kmemstats[nkms].ks_shortdesc); 789 buf[sizeof(buf) - 1] = '\0'; 790 kmemstats[nkms].ks_shortdesc = strdup(buf); 791 kmsp = kmemstats[nkms].ks_next; 792 } 793 if (kmsp != NULL) 794 warnx("truncated to the first %d memory types", nkms); 795 796 printf( 797 "\nMemory statistics by type Type Kern\n"); 798 printf( 799 " Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)\n"); 800 for (i = 0, ks = &kmemstats[0]; i < nkms; i++, ks++) { 801 if (ks->ks_calls == 0) 802 continue; 803 printf("%13s%6ld%6ldK%7ldK%7ldK%9lld%5u%6u", 804 ks->ks_shortdesc, 805 cpuagg(ks->ks_inuse), (cpuagg(ks->ks_memuse) + 1023) / 1024, 806 (ks->ks_maxused + 1023) / 1024, 807 (ks->ks_limit + 1023) / 1024, ks->ks_calls, 808 ks->ks_limblocks, ks->ks_mapblocks); 809 first = 1; 810 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) { 811 if ((ks->ks_size & j) == 0) 812 continue; 813 if (first) 814 printf(" "); 815 else 816 printf(","); 817 if(j<1024) 818 printf("%d",j); 819 else 820 printf("%dK",j>>10); 821 first = 0; 822 } 823 printf("\n"); 824 totuse += cpuagg(ks->ks_memuse); 825 totreq += ks->ks_calls; 826 } 827 printf("\nMemory Totals: In Use Free Requests\n"); 828 printf(" %7ldK %6ldK %8ld\n", 829 (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq); 830 } 831 832 static void 833 dozmem(void) 834 { 835 char *buf; 836 size_t bufsize; 837 838 buf = NULL; 839 bufsize = 1024; 840 for (;;) { 841 if ((buf = realloc(buf, bufsize)) == NULL) 842 err(1, "realloc()"); 843 if (sysctlbyname("vm.zone", buf, &bufsize, 0, NULL) == 0) 844 break; 845 if (errno != ENOMEM) 846 err(1, "sysctl()"); 847 bufsize *= 2; 848 } 849 buf[bufsize] = '\0'; /* play it safe */ 850 printf("%s\n\n", buf); 851 free(buf); 852 } 853 854 /* 855 * kread reads something from the kernel, given its nlist index. 856 */ 857 static void 858 kread(int nlx, void *addr, size_t size) 859 { 860 const char *sym; 861 862 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) { 863 sym = namelist[nlx].n_name; 864 if (*sym == '_') 865 ++sym; 866 errx(1, "symbol %s not defined", sym); 867 } 868 if (kvm_read(kd, namelist[nlx].n_value, addr, size) != (ssize_t)size) { 869 sym = namelist[nlx].n_name; 870 if (*sym == '_') 871 ++sym; 872 errx(1, "%s: %s", sym, kvm_geterr(kd)); 873 } 874 } 875 876 static void 877 usage(void) 878 { 879 fprintf(stderr, "%s%s", 880 "usage: vmstat [-imsz] [-c count] [-M core] [-N system] [-w wait]\n", 881 " [-n devs] [disks]\n"); 882 exit(1); 883 } 884