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 1.21 2007/06/03 11:49:30 y0netan1 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", 0, 0, 0, 0 }, 74 #define X_NCHSTATS 1 75 { "_nchstats", 0, 0, 0, 0 }, 76 #define X_KMEMSTATISTICS 2 77 { "_kmemstatistics", 0, 0, 0, 0 }, 78 #define X_ZLIST 3 79 { "_zlist", 0, 0, 0, 0 }, 80 #ifdef notyet 81 #define X_DEFICIT 4 82 { "_deficit", 0, 0, 0, 0 }, 83 #define X_FORKSTAT 5 84 { "_forkstat", 0, 0, 0, 0 }, 85 #define X_REC 6 86 { "_rectime", 0, 0, 0, 0 }, 87 #define X_PGIN 7 88 { "_pgintime", 0, 0, 0, 0 }, 89 #define X_XSTATS 8 90 { "_xstats", 0, 0, 0, 0 }, 91 #define X_END 9 92 #else 93 #define X_END 4 94 #endif 95 { "", 0, 0, 0, 0 }, 96 }; 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(void); 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 void devstats(void); 148 149 int 150 main(int argc, char **argv) 151 { 152 int c, todo; 153 u_int interval; 154 int reps; 155 char *memf, *nlistf; 156 char errbuf[_POSIX2_LINE_MAX]; 157 158 memf = nlistf = NULL; 159 interval = reps = todo = 0; 160 maxshowdevs = 2; 161 while ((c = getopt(argc, argv, "c:fiM:mN:n:p:stvw:z")) != -1) { 162 switch (c) { 163 case 'c': 164 reps = atoi(optarg); 165 break; 166 case 'f': 167 #ifdef notyet 168 todo |= FORKSTAT; 169 #else 170 errx(EX_USAGE, "sorry, -f is not (re)implemented yet"); 171 #endif 172 break; 173 case 'i': 174 todo |= INTRSTAT; 175 break; 176 case 'M': 177 memf = optarg; 178 break; 179 case 'm': 180 todo |= MEMSTAT; 181 break; 182 case 'N': 183 nlistf = optarg; 184 break; 185 case 'n': 186 nflag = 1; 187 maxshowdevs = atoi(optarg); 188 if (maxshowdevs < 0) 189 errx(1, "number of devices %d is < 0", 190 maxshowdevs); 191 break; 192 case 'p': 193 if (buildmatch(optarg, &matches, &num_matches) != 0) 194 errx(1, "%s", devstat_errbuf); 195 break; 196 case 's': 197 todo |= SUMSTAT; 198 break; 199 case 't': 200 #ifdef notyet 201 todo |= TIMESTAT; 202 #else 203 errx(EX_USAGE, "sorry, -t is not (re)implemented yet"); 204 #endif 205 break; 206 case 'v': 207 ++verbose; 208 break; 209 case 'w': 210 interval = atoi(optarg); 211 break; 212 case 'z': 213 todo |= ZMEMSTAT; 214 break; 215 default: 216 usage(); 217 } 218 } 219 argc -= optind; 220 argv += optind; 221 222 if (todo == 0) 223 todo = VMSTAT; 224 225 /* 226 * Discard setgid privileges if not the running kernel so that bad 227 * guys can't print interesting stuff from kernel memory. 228 */ 229 if (nlistf != NULL || memf != NULL) 230 setgid(getgid()); 231 232 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 233 if (kd == 0) 234 errx(1, "kvm_openfiles: %s", errbuf); 235 236 if ((c = kvm_nlist(kd, namelist)) != 0) { 237 if (c > 0) { 238 warnx("undefined symbols:"); 239 for (c = 0; c < (int)__arysize(namelist); c++) 240 if (namelist[c].n_type == 0) 241 fprintf(stderr, " %s", 242 namelist[c].n_name); 243 fputc('\n', stderr); 244 } else 245 warnx("kvm_nlist: %s", kvm_geterr(kd)); 246 exit(1); 247 } 248 249 if (todo & VMSTAT) { 250 struct winsize winsize; 251 252 /* 253 * Make sure that the userland devstat version matches the 254 * kernel devstat version. If not, exit and print a 255 * message informing the user of his mistake. 256 */ 257 if (checkversion() < 0) 258 errx(1, "%s", devstat_errbuf); 259 260 261 argv = getdrivedata(argv); 262 winsize.ws_row = 0; 263 ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize); 264 if (winsize.ws_row > 0) 265 winlines = winsize.ws_row; 266 267 } 268 269 #define BACKWARD_COMPATIBILITY 270 #ifdef BACKWARD_COMPATIBILITY 271 if (*argv) { 272 interval = atoi(*argv); 273 if (*++argv) 274 reps = atoi(*argv); 275 } 276 #endif 277 278 if (interval) { 279 if (!reps) 280 reps = -1; 281 } else if (reps) 282 interval = 1; 283 284 #ifdef notyet 285 if (todo & FORKSTAT) 286 doforkst(); 287 #endif 288 if (todo & MEMSTAT) 289 domem(); 290 if (todo & ZMEMSTAT) 291 dozmem(); 292 if (todo & SUMSTAT) 293 dosum(); 294 #ifdef notyet 295 if (todo & TIMESTAT) 296 dotimes(); 297 #endif 298 if (todo & INTRSTAT) 299 dointr(); 300 if (todo & VMSTAT) 301 dovmstat(interval, reps); 302 exit(0); 303 } 304 305 static char ** 306 getdrivedata(char **argv) 307 { 308 if ((num_devices = getnumdevs()) < 0) 309 errx(1, "%s", devstat_errbuf); 310 311 cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 312 last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 313 bzero(cur.dinfo, sizeof(struct devinfo)); 314 bzero(last.dinfo, sizeof(struct devinfo)); 315 316 if (getdevs(&cur) == -1) 317 errx(1, "%s", devstat_errbuf); 318 319 num_devices = cur.dinfo->numdevs; 320 generation = cur.dinfo->generation; 321 322 specified_devices = (char **)malloc(sizeof(char *)); 323 for (num_devices_specified = 0; *argv; ++argv) { 324 if (isdigit(**argv)) 325 break; 326 num_devices_specified++; 327 specified_devices = (char **)realloc(specified_devices, 328 sizeof(char *) * 329 num_devices_specified); 330 specified_devices[num_devices_specified - 1] = *argv; 331 } 332 dev_select = NULL; 333 334 if (nflag == 0 && maxshowdevs < num_devices_specified) 335 maxshowdevs = num_devices_specified; 336 337 /* 338 * People are generally only interested in disk statistics when 339 * they're running vmstat. So, that's what we're going to give 340 * them if they don't specify anything by default. We'll also give 341 * them any other random devices in the system so that we get to 342 * maxshowdevs devices, if that many devices exist. If the user 343 * specifies devices on the command line, either through a pattern 344 * match or by naming them explicitly, we will give the user only 345 * those devices. 346 */ 347 if ((num_devices_specified == 0) && (num_matches == 0)) { 348 if (buildmatch("da", &matches, &num_matches) != 0) 349 errx(1, "%s", devstat_errbuf); 350 351 select_mode = DS_SELECT_ADD; 352 } else 353 select_mode = DS_SELECT_ONLY; 354 355 /* 356 * At this point, selectdevs will almost surely indicate that the 357 * device list has changed, so we don't look for return values of 0 358 * or 1. If we get back -1, though, there is an error. 359 */ 360 if (selectdevs(&dev_select, &num_selected, &num_selections, 361 &select_generation, generation, cur.dinfo->devices, 362 num_devices, matches, num_matches, specified_devices, 363 num_devices_specified, select_mode, 364 maxshowdevs, 0) == -1) 365 errx(1, "%s", devstat_errbuf); 366 367 return(argv); 368 } 369 370 static long 371 getuptime(void) 372 { 373 static time_t now, boottime; 374 time_t uptime; 375 376 if (boottime == 0) 377 kread(X_BOOTTIME, &boottime, sizeof(boottime)); 378 time(&now); 379 uptime = now - boottime; 380 if (uptime <= 0 || uptime > 60*60*24*365*10) 381 errx(1, "time makes no sense; namelist must be wrong"); 382 return(uptime); 383 } 384 385 int hdrcnt; 386 387 static void 388 dovmstat(u_int interval, int reps) 389 { 390 struct vmtotal total; 391 time_t uptime, halfuptime; 392 struct devinfo *tmp_dinfo; 393 int vmm_size = sizeof(vmm); 394 int vms_size = sizeof(vms); 395 int vmt_size = sizeof(total); 396 397 uptime = getuptime(); 398 halfuptime = uptime / 2; 399 signal(SIGCONT, needhdr); 400 401 for (hdrcnt = 1;;) { 402 if (!--hdrcnt) 403 printhdr(); 404 if (kinfo_get_sched_cputime(&cp_time)) 405 err(1, "kinfo_get_sched_cputime"); 406 407 tmp_dinfo = last.dinfo; 408 last.dinfo = cur.dinfo; 409 cur.dinfo = tmp_dinfo; 410 last.busy_time = cur.busy_time; 411 412 /* 413 * Here what we want to do is refresh our device stats. 414 * getdevs() returns 1 when the device list has changed. 415 * If the device list has changed, we want to go through 416 * the selection process again, in case a device that we 417 * were previously displaying has gone away. 418 */ 419 switch (getdevs(&cur)) { 420 case -1: 421 errx(1, "%s", devstat_errbuf); 422 break; 423 case 1: { 424 int retval; 425 426 num_devices = cur.dinfo->numdevs; 427 generation = cur.dinfo->generation; 428 429 retval = selectdevs(&dev_select, &num_selected, 430 &num_selections, &select_generation, 431 generation, cur.dinfo->devices, 432 num_devices, matches, num_matches, 433 specified_devices, 434 num_devices_specified, select_mode, 435 maxshowdevs, 0); 436 switch (retval) { 437 case -1: 438 errx(1, "%s", devstat_errbuf); 439 break; 440 case 1: 441 printhdr(); 442 break; 443 default: 444 break; 445 } 446 } 447 default: 448 break; 449 } 450 451 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) { 452 perror("sysctlbyname: vm.vmstats"); 453 exit(1); 454 } 455 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 456 perror("sysctlbyname: vm.vmmeter"); 457 exit(1); 458 } 459 if (sysctlbyname("vm.vmtotal", &total, &vmt_size, NULL, 0)) { 460 perror("sysctlbyname: vm.vmtotal"); 461 exit(1); 462 } 463 printf("%2d %1d %1d", 464 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw); 465 #define vmstat_pgtok(a) ((a) * vms.v_page_size >> 10) 466 #define rate(x) (((x) + halfuptime) / uptime) /* round */ 467 printf(" %7ld %6ld ", 468 (long)vmstat_pgtok(total.t_avm), (long)vmstat_pgtok(total.t_free)); 469 printf("%4lu ", 470 (u_long)rate(vmm.v_vm_faults - ovmm.v_vm_faults)); 471 printf("%3lu ", 472 (u_long)rate(vmm.v_reactivated - ovmm.v_reactivated)); 473 printf("%3lu ", 474 (u_long)rate(vmm.v_swapin + vmm.v_vnodein - 475 (ovmm.v_swapin + ovmm.v_vnodein))); 476 printf("%3lu ", 477 (u_long)rate(vmm.v_swapout + vmm.v_vnodeout - 478 (ovmm.v_swapout + ovmm.v_vnodeout))); 479 printf("%3lu ", 480 (u_long)rate(vmm.v_tfree - ovmm.v_tfree)); 481 printf("%3lu ", 482 (u_long)rate(vmm.v_pdpages - ovmm.v_pdpages)); 483 devstats(); 484 printf("%4lu %4lu %3lu ", 485 (u_long)rate(vmm.v_intr - ovmm.v_intr), 486 (u_long)rate(vmm.v_syscall - ovmm.v_syscall), 487 (u_long)rate(vmm.v_swtch - ovmm.v_swtch)); 488 cpustats(); 489 printf("\n"); 490 fflush(stdout); 491 if (reps >= 0 && --reps <= 0) 492 break; 493 ovmm = vmm; 494 uptime = interval; 495 /* 496 * We round upward to avoid losing low-frequency events 497 * (i.e., >= 1 per interval but < 1 per second). 498 */ 499 if (interval != 1) 500 halfuptime = (uptime + 1) / 2; 501 else 502 halfuptime = 0; 503 sleep(interval); 504 } 505 } 506 507 static void 508 printhdr(void) 509 { 510 int i, num_shown; 511 512 num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs; 513 printf(" procs memory page%*s", 19, ""); 514 if (num_shown > 1) 515 printf(" disks %*s", num_shown * 4 - 7, ""); 516 else if (num_shown == 1) 517 printf("disk"); 518 printf(" faults cpu\n"); 519 printf(" r b w avm fre flt re pi po fr sr "); 520 for (i = 0; i < num_devices; i++) 521 if ((dev_select[i].selected) 522 && (dev_select[i].selected <= maxshowdevs)) 523 printf("%c%c%d ", dev_select[i].device_name[0], 524 dev_select[i].device_name[1], 525 dev_select[i].unit_number); 526 printf(" in sy cs us sy id\n"); 527 hdrcnt = winlines - 2; 528 } 529 530 /* 531 * Force a header to be prepended to the next output. 532 */ 533 static void 534 needhdr(__unused int signo) 535 { 536 537 hdrcnt = 1; 538 } 539 540 static long 541 pct(long top, long bot) 542 { 543 long ans; 544 545 if (bot == 0) 546 return(0); 547 ans = (quad_t)top * 100 / bot; 548 return (ans); 549 } 550 551 #define PCT(top, bot) pct((long)(top), (long)(bot)) 552 553 static void 554 dosum(void) 555 { 556 struct nchstats *nch_tmp, nchstats; 557 int vms_size = sizeof(vms); 558 int vmm_size = sizeof(vmm); 559 int cpucnt; 560 u_long nchtotal; 561 size_t nch_size = sizeof(struct nchstats) * SMP_MAXCPU; 562 563 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) { 564 perror("sysctlbyname: vm.vmstats"); 565 exit(1); 566 } 567 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 568 perror("sysctlbyname: vm.vmstats"); 569 exit(1); 570 } 571 printf("%9u cpu context switches\n", vmm.v_swtch); 572 printf("%9u device interrupts\n", vmm.v_intr); 573 printf("%9u software interrupts\n", vmm.v_soft); 574 printf("%9u traps\n", vmm.v_trap); 575 printf("%9u system calls\n", vmm.v_syscall); 576 printf("%9u kernel threads created\n", vmm.v_kthreads); 577 printf("%9u fork() calls\n", vmm.v_forks); 578 printf("%9u vfork() calls\n", vmm.v_vforks); 579 printf("%9u rfork() calls\n", vmm.v_rforks); 580 printf("%9u exec() calls\n", vmm.v_exec); 581 printf("%9u swap pager pageins\n", vmm.v_swapin); 582 printf("%9u swap pager pages paged in\n", vmm.v_swappgsin); 583 printf("%9u swap pager pageouts\n", vmm.v_swapout); 584 printf("%9u swap pager pages paged out\n", vmm.v_swappgsout); 585 printf("%9u vnode pager pageins\n", vmm.v_vnodein); 586 printf("%9u vnode pager pages paged in\n", vmm.v_vnodepgsin); 587 printf("%9u vnode pager pageouts\n", vmm.v_vnodeout); 588 printf("%9u vnode pager pages paged out\n", vmm.v_vnodepgsout); 589 printf("%9u page daemon wakeups\n", vmm.v_pdwakeups); 590 printf("%9u pages examined by the page daemon\n", vmm.v_pdpages); 591 printf("%9u pages reactivated\n", vmm.v_reactivated); 592 printf("%9u copy-on-write faults\n", vmm.v_cow_faults); 593 printf("%9u copy-on-write optimized faults\n", vmm.v_cow_optim); 594 printf("%9u zero fill pages zeroed\n", vmm.v_zfod); 595 printf("%9u zero fill pages prezeroed\n", vmm.v_ozfod); 596 printf("%9u intransit blocking page faults\n", vmm.v_intrans); 597 printf("%9u total VM faults taken\n", vmm.v_vm_faults); 598 printf("%9u pages affected by kernel thread creation\n", vmm.v_kthreadpages); 599 printf("%9u pages affected by fork()\n", vmm.v_forkpages); 600 printf("%9u pages affected by vfork()\n", vmm.v_vforkpages); 601 printf("%9u pages affected by rfork()\n", vmm.v_rforkpages); 602 printf("%9u pages freed\n", vmm.v_tfree); 603 printf("%9u pages freed by daemon\n", vmm.v_dfree); 604 printf("%9u pages freed by exiting processes\n", vmm.v_pfree); 605 printf("%9u pages active\n", vms.v_active_count); 606 printf("%9u pages inactive\n", vms.v_inactive_count); 607 printf("%9u pages in VM cache\n", vms.v_cache_count); 608 printf("%9u pages wired down\n", vms.v_wire_count); 609 printf("%9u pages free\n", vms.v_free_count); 610 printf("%9u bytes per page\n", vms.v_page_size); 611 612 if ((nch_tmp = malloc(nch_size)) == NULL) { 613 perror("malloc"); 614 exit(1); 615 } else { 616 if (sysctlbyname("vfs.cache.nchstats", nch_tmp, &nch_size, NULL, 0)) { 617 perror("sysctlbyname vfs.cache.nchstats"); 618 free(nch_tmp); 619 exit(1); 620 } else { 621 if ((nch_tmp = realloc(nch_tmp, nch_size)) == NULL) { 622 perror("realloc"); 623 exit(1); 624 } 625 } 626 } 627 628 cpucnt = nch_size / sizeof(struct nchstats); 629 kvm_nch_cpuagg(nch_tmp, &nchstats, cpucnt); 630 631 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits + 632 nchstats.ncs_badhits + nchstats.ncs_falsehits + 633 nchstats.ncs_miss + nchstats.ncs_long; 634 printf("%9ld total name lookups\n", nchtotal); 635 printf( 636 "%9s cache hits (%ld%% pos + %ld%% neg) system %ld%% per-directory\n", 637 "", PCT(nchstats.ncs_goodhits, nchtotal), 638 PCT(nchstats.ncs_neghits, nchtotal), 639 PCT(nchstats.ncs_pass2, nchtotal)); 640 printf("%9s deletions %ld%%, falsehits %ld%%, toolong %ld%%\n", "", 641 PCT(nchstats.ncs_badhits, nchtotal), 642 PCT(nchstats.ncs_falsehits, nchtotal), 643 PCT(nchstats.ncs_long, nchtotal)); 644 free(nch_tmp); 645 } 646 647 #ifdef notyet 648 void 649 doforkst(void) 650 { 651 struct forkstat fks; 652 653 kread(X_FORKSTAT, &fks, sizeof(struct forkstat)); 654 printf("%d forks, %d pages, average %.2f\n", 655 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork); 656 printf("%d vforks, %d pages, average %.2f\n", 657 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork); 658 } 659 #endif 660 661 static void 662 devstats(void) 663 { 664 int dn; 665 long double transfers_per_second; 666 long double busy_seconds; 667 668 diff_cp_time.cp_user = cp_time.cp_user - old_cp_time.cp_user; 669 diff_cp_time.cp_nice = cp_time.cp_nice - old_cp_time.cp_nice; 670 diff_cp_time.cp_sys = cp_time.cp_sys - old_cp_time.cp_sys; 671 diff_cp_time.cp_intr = cp_time.cp_intr - old_cp_time.cp_intr; 672 diff_cp_time.cp_idle = cp_time.cp_idle - old_cp_time.cp_idle; 673 old_cp_time = cp_time; 674 675 busy_seconds = compute_etime(cur.busy_time, last.busy_time); 676 677 for (dn = 0; dn < num_devices; dn++) { 678 int di; 679 680 if ((dev_select[dn].selected == 0) 681 || (dev_select[dn].selected > maxshowdevs)) 682 continue; 683 684 di = dev_select[dn].position; 685 686 if (compute_stats(&cur.dinfo->devices[di], 687 &last.dinfo->devices[di], busy_seconds, 688 NULL, NULL, NULL, 689 NULL, &transfers_per_second, NULL, 690 NULL, NULL) != 0) 691 errx(1, "%s", devstat_errbuf); 692 693 printf("%3.0Lf ", transfers_per_second); 694 } 695 } 696 697 static void 698 cpustats(void) 699 { 700 uint64_t total; 701 double totusage; 702 703 total = diff_cp_time.cp_user + diff_cp_time.cp_nice + 704 diff_cp_time.cp_sys + diff_cp_time.cp_intr + diff_cp_time.cp_idle; 705 706 if (total) 707 totusage = 100.0 / total; 708 else 709 totusage = 0; 710 printf("%2.0f ", 711 (diff_cp_time.cp_user + diff_cp_time.cp_nice) * totusage); 712 printf("%2.0f ", 713 (diff_cp_time.cp_sys + diff_cp_time.cp_intr) * totusage); 714 printf("%2.0f", 715 diff_cp_time.cp_idle * totusage); 716 } 717 718 static void 719 dointr(void) 720 { 721 u_long *intrcnt, uptime; 722 u_int64_t inttotal; 723 size_t nintr, inamlen, i, size; 724 int nwidth; 725 char *intrstr; 726 char **intrname; 727 728 uptime = getuptime(); 729 if (sysctlbyname("hw.intrnames", NULL, &inamlen, NULL, 0) != 0) 730 errx(1, "sysctlbyname"); 731 intrstr = malloc(inamlen); 732 if (intrstr == NULL) 733 err(1, "malloc"); 734 sysctlbyname("hw.intrnames", intrstr, &inamlen, NULL, 0); 735 for (nintr = 0, i = 0; i < inamlen; ++i) { 736 if (intrstr[i] == 0) 737 nintr++; 738 } 739 intrname = malloc(nintr * sizeof(char *)); 740 for (i = 0; i < nintr; ++i) { 741 intrname[i] = intrstr; 742 intrstr += strlen(intrstr) + 1; 743 } 744 745 size = nintr * sizeof(*intrcnt); 746 intrcnt = calloc(nintr, sizeof(*intrcnt)); 747 if (intrcnt == NULL) 748 err(1, "malloc"); 749 sysctlbyname("hw.intrcnt", intrcnt, &size, NULL, 0); 750 751 nwidth = 21; 752 for (i = 0; i < nintr; ++i) { 753 if (nwidth < (int)strlen(intrname[i])) 754 nwidth = (int)strlen(intrname[i]); 755 } 756 757 printf("interrupt total rate\n"); 758 inttotal = 0; 759 for (i = 0; i < nintr; ++i) { 760 int named; 761 char *infop, irqinfo[32]; 762 763 if ((named = strncmp(intrname[i], "irq", 3)) != 0 || 764 intrcnt[i] > 0) { 765 infop = intrname[i]; 766 if (verbose && named) { 767 snprintf(irqinfo, sizeof(irqinfo), 768 "irq%d: %s", i, intrname[i]); 769 infop = irqinfo; 770 } 771 printf("%-*.*s %11lu %10lu\n", 772 nwidth, nwidth, infop, 773 intrcnt[i], intrcnt[i] / uptime); 774 } 775 inttotal += intrcnt[i]; 776 } 777 printf("%-*.*s %11llu %10llu\n", 778 nwidth, nwidth, "Total", 779 inttotal, inttotal / (u_int64_t) uptime); 780 } 781 782 #define MAX_KMSTATS 200 783 784 static long 785 cpuagg(long *ary) 786 { 787 int i; 788 long ttl; 789 790 for (i = ttl = 0; i < SMP_MAXCPU; ++i) 791 ttl += ary[i]; 792 return(ttl); 793 } 794 795 static void 796 domem(void) 797 { 798 struct malloc_type *ks; 799 int i, j; 800 int first, nkms; 801 long totuse = 0, totfree = 0, totreq = 0; 802 struct malloc_type kmemstats[MAX_KMSTATS], *kmsp; 803 char buf[1024]; 804 805 kread(X_KMEMSTATISTICS, &kmsp, sizeof(kmsp)); 806 for (nkms = 0; nkms < MAX_KMSTATS && kmsp != NULL; nkms++) { 807 if (sizeof(kmemstats[0]) != kvm_read(kd, (u_long)kmsp, 808 &kmemstats[nkms], sizeof(kmemstats[0]))) 809 err(1, "kvm_read(%p)", (void *)kmsp); 810 if (sizeof(buf) != kvm_read(kd, 811 (u_long)kmemstats[nkms].ks_shortdesc, buf, sizeof(buf))) 812 err(1, "kvm_read(%p)", 813 kmemstats[nkms].ks_shortdesc); 814 buf[sizeof(buf) - 1] = '\0'; 815 kmemstats[nkms].ks_shortdesc = strdup(buf); 816 kmsp = kmemstats[nkms].ks_next; 817 } 818 if (kmsp != NULL) 819 warnx("truncated to the first %d memory types", nkms); 820 821 printf( 822 "\nMemory statistics by type Type Kern\n"); 823 printf( 824 " Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)\n"); 825 for (i = 0, ks = &kmemstats[0]; i < nkms; i++, ks++) { 826 if (ks->ks_calls == 0) 827 continue; 828 printf("%13s%6ld%6ldK%7ldK%7ldK%9lld%5u%6u", 829 ks->ks_shortdesc, 830 cpuagg(ks->ks_inuse), (cpuagg(ks->ks_memuse) + 1023) / 1024, 831 (ks->ks_maxused + 1023) / 1024, 832 (ks->ks_limit + 1023) / 1024, ks->ks_calls, 833 ks->ks_limblocks, ks->ks_mapblocks); 834 first = 1; 835 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) { 836 if ((ks->ks_size & j) == 0) 837 continue; 838 if (first) 839 printf(" "); 840 else 841 printf(","); 842 if(j<1024) 843 printf("%d",j); 844 else 845 printf("%dK",j>>10); 846 first = 0; 847 } 848 printf("\n"); 849 totuse += cpuagg(ks->ks_memuse); 850 totreq += ks->ks_calls; 851 } 852 printf("\nMemory Totals: In Use Free Requests\n"); 853 printf(" %7ldK %6ldK %8ld\n", 854 (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq); 855 } 856 857 static void 858 dozmem(void) 859 { 860 char *buf; 861 size_t bufsize; 862 863 buf = NULL; 864 bufsize = 1024; 865 for (;;) { 866 if ((buf = realloc(buf, bufsize)) == NULL) 867 err(1, "realloc()"); 868 if (sysctlbyname("vm.zone", buf, &bufsize, 0, NULL) == 0) 869 break; 870 if (errno != ENOMEM) 871 err(1, "sysctl()"); 872 bufsize *= 2; 873 } 874 buf[bufsize] = '\0'; /* play it safe */ 875 printf("%s\n\n", buf); 876 free(buf); 877 } 878 879 /* 880 * kread reads something from the kernel, given its nlist index. 881 */ 882 static void 883 kread(int nlx, void *addr, size_t size) 884 { 885 const char *sym; 886 887 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) { 888 sym = namelist[nlx].n_name; 889 if (*sym == '_') 890 ++sym; 891 errx(1, "symbol %s not defined", sym); 892 } 893 if (kvm_read(kd, namelist[nlx].n_value, addr, size) != (ssize_t)size) { 894 sym = namelist[nlx].n_name; 895 if (*sym == '_') 896 ++sym; 897 errx(1, "%s: %s", sym, kvm_geterr(kd)); 898 } 899 } 900 901 static void 902 usage(void) 903 { 904 fprintf(stderr, "%s%s", 905 "usage: vmstat [-imsvz] [-c count] [-M core] [-N system] [-w wait]\n", 906 " [-n devs] [disks]\n"); 907 exit(1); 908 } 909