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 1.19 2005/11/17 21:43:10 dillon 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; 115 116 kvm_t *kd; 117 118 struct kinfo_cputime cp_time, old_cp_time, diff_cp_time; 119 120 #define FORKSTAT 0x01 121 #define INTRSTAT 0x02 122 #define MEMSTAT 0x04 123 #define SUMSTAT 0x08 124 #define TIMESTAT 0x10 125 #define VMSTAT 0x20 126 #define ZMEMSTAT 0x40 127 128 static void cpustats(void); 129 static void dointr(void); 130 static void domem(void); 131 static void dosum(void); 132 static void dozmem(void); 133 static void dovmstat(u_int, int); 134 static void kread(int, void *, size_t); 135 static void usage(void); 136 static char **getdrivedata(char **); 137 static long getuptime(void); 138 static void needhdr(int); 139 static long pct(long, long); 140 141 #ifdef notyet 142 static void dotimes(void); /* Not implemented */ 143 static void doforkst(void); 144 #endif 145 static void printhdr(void); 146 static void devstats(void); 147 148 int 149 main(int argc, char **argv) 150 { 151 int c, todo; 152 u_int interval; 153 int reps; 154 char *memf, *nlistf; 155 char errbuf[_POSIX2_LINE_MAX]; 156 157 memf = nlistf = NULL; 158 interval = reps = todo = 0; 159 maxshowdevs = 2; 160 while ((c = getopt(argc, argv, "c:fiM:mN:n:p:stw:z")) != -1) { 161 switch (c) { 162 case 'c': 163 reps = atoi(optarg); 164 break; 165 case 'f': 166 #ifdef notyet 167 todo |= FORKSTAT; 168 #else 169 errx(EX_USAGE, "sorry, -f is not (re)implemented yet"); 170 #endif 171 break; 172 case 'i': 173 todo |= INTRSTAT; 174 break; 175 case 'M': 176 memf = optarg; 177 break; 178 case 'm': 179 todo |= MEMSTAT; 180 break; 181 case 'N': 182 nlistf = optarg; 183 break; 184 case 'n': 185 nflag = 1; 186 maxshowdevs = atoi(optarg); 187 if (maxshowdevs < 0) 188 errx(1, "number of devices %d is < 0", 189 maxshowdevs); 190 break; 191 case 'p': 192 if (buildmatch(optarg, &matches, &num_matches) != 0) 193 errx(1, "%s", devstat_errbuf); 194 break; 195 case 's': 196 todo |= SUMSTAT; 197 break; 198 case 't': 199 #ifdef notyet 200 todo |= TIMESTAT; 201 #else 202 errx(EX_USAGE, "sorry, -t is not (re)implemented yet"); 203 #endif 204 break; 205 case 'w': 206 interval = atoi(optarg); 207 break; 208 case 'z': 209 todo |= ZMEMSTAT; 210 break; 211 default: 212 usage(); 213 } 214 } 215 argc -= optind; 216 argv += optind; 217 218 if (todo == 0) 219 todo = VMSTAT; 220 221 /* 222 * Discard setgid privileges if not the running kernel so that bad 223 * guys can't print interesting stuff from kernel memory. 224 */ 225 if (nlistf != NULL || memf != NULL) 226 setgid(getgid()); 227 228 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 229 if (kd == 0) 230 errx(1, "kvm_openfiles: %s", errbuf); 231 232 if ((c = kvm_nlist(kd, namelist)) != 0) { 233 if (c > 0) { 234 warnx("undefined symbols:"); 235 for (c = 0; c < (int)__arysize(namelist); c++) 236 if (namelist[c].n_type == 0) 237 fprintf(stderr, " %s", 238 namelist[c].n_name); 239 fputc('\n', stderr); 240 } else 241 warnx("kvm_nlist: %s", kvm_geterr(kd)); 242 exit(1); 243 } 244 245 if (todo & VMSTAT) { 246 struct winsize winsize; 247 248 /* 249 * Make sure that the userland devstat version matches the 250 * kernel devstat version. If not, exit and print a 251 * message informing the user of his mistake. 252 */ 253 if (checkversion() < 0) 254 errx(1, "%s", devstat_errbuf); 255 256 257 argv = getdrivedata(argv); 258 winsize.ws_row = 0; 259 ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize); 260 if (winsize.ws_row > 0) 261 winlines = winsize.ws_row; 262 263 } 264 265 #define BACKWARD_COMPATIBILITY 266 #ifdef BACKWARD_COMPATIBILITY 267 if (*argv) { 268 interval = atoi(*argv); 269 if (*++argv) 270 reps = atoi(*argv); 271 } 272 #endif 273 274 if (interval) { 275 if (!reps) 276 reps = -1; 277 } else if (reps) 278 interval = 1; 279 280 #ifdef notyet 281 if (todo & FORKSTAT) 282 doforkst(); 283 #endif 284 if (todo & MEMSTAT) 285 domem(); 286 if (todo & ZMEMSTAT) 287 dozmem(); 288 if (todo & SUMSTAT) 289 dosum(); 290 #ifdef notyet 291 if (todo & TIMESTAT) 292 dotimes(); 293 #endif 294 if (todo & INTRSTAT) 295 dointr(); 296 if (todo & VMSTAT) 297 dovmstat(interval, reps); 298 exit(0); 299 } 300 301 static char ** 302 getdrivedata(char **argv) 303 { 304 if ((num_devices = getnumdevs()) < 0) 305 errx(1, "%s", devstat_errbuf); 306 307 cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 308 last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 309 bzero(cur.dinfo, sizeof(struct devinfo)); 310 bzero(last.dinfo, sizeof(struct devinfo)); 311 312 if (getdevs(&cur) == -1) 313 errx(1, "%s", devstat_errbuf); 314 315 num_devices = cur.dinfo->numdevs; 316 generation = cur.dinfo->generation; 317 318 specified_devices = (char **)malloc(sizeof(char *)); 319 for (num_devices_specified = 0; *argv; ++argv) { 320 if (isdigit(**argv)) 321 break; 322 num_devices_specified++; 323 specified_devices = (char **)realloc(specified_devices, 324 sizeof(char *) * 325 num_devices_specified); 326 specified_devices[num_devices_specified - 1] = *argv; 327 } 328 dev_select = NULL; 329 330 if (nflag == 0 && maxshowdevs < num_devices_specified) 331 maxshowdevs = num_devices_specified; 332 333 /* 334 * People are generally only interested in disk statistics when 335 * they're running vmstat. So, that's what we're going to give 336 * them if they don't specify anything by default. We'll also give 337 * them any other random devices in the system so that we get to 338 * maxshowdevs devices, if that many devices exist. If the user 339 * specifies devices on the command line, either through a pattern 340 * match or by naming them explicitly, we will give the user only 341 * those devices. 342 */ 343 if ((num_devices_specified == 0) && (num_matches == 0)) { 344 if (buildmatch("da", &matches, &num_matches) != 0) 345 errx(1, "%s", devstat_errbuf); 346 347 select_mode = DS_SELECT_ADD; 348 } else 349 select_mode = DS_SELECT_ONLY; 350 351 /* 352 * At this point, selectdevs will almost surely indicate that the 353 * device list has changed, so we don't look for return values of 0 354 * or 1. If we get back -1, though, there is an error. 355 */ 356 if (selectdevs(&dev_select, &num_selected, &num_selections, 357 &select_generation, generation, cur.dinfo->devices, 358 num_devices, matches, num_matches, specified_devices, 359 num_devices_specified, select_mode, 360 maxshowdevs, 0) == -1) 361 errx(1, "%s", devstat_errbuf); 362 363 return(argv); 364 } 365 366 static long 367 getuptime(void) 368 { 369 static time_t now, boottime; 370 time_t uptime; 371 372 if (boottime == 0) 373 kread(X_BOOTTIME, &boottime, sizeof(boottime)); 374 time(&now); 375 uptime = now - boottime; 376 if (uptime <= 0 || uptime > 60*60*24*365*10) 377 errx(1, "time makes no sense; namelist must be wrong"); 378 return(uptime); 379 } 380 381 int hdrcnt; 382 383 static void 384 dovmstat(u_int interval, int reps) 385 { 386 struct vmtotal total; 387 time_t uptime, halfuptime; 388 struct devinfo *tmp_dinfo; 389 int vmm_size = sizeof(vmm); 390 int vms_size = sizeof(vms); 391 int vmt_size = sizeof(total); 392 393 uptime = getuptime(); 394 halfuptime = uptime / 2; 395 signal(SIGCONT, needhdr); 396 397 for (hdrcnt = 1;;) { 398 if (!--hdrcnt) 399 printhdr(); 400 if (kinfo_get_sched_cputime(&cp_time)) 401 err(1, "kinfo_get_sched_cputime"); 402 403 tmp_dinfo = last.dinfo; 404 last.dinfo = cur.dinfo; 405 cur.dinfo = tmp_dinfo; 406 last.busy_time = cur.busy_time; 407 408 /* 409 * Here what we want to do is refresh our device stats. 410 * getdevs() returns 1 when the device list has changed. 411 * If the device list has changed, we want to go through 412 * the selection process again, in case a device that we 413 * were previously displaying has gone away. 414 */ 415 switch (getdevs(&cur)) { 416 case -1: 417 errx(1, "%s", devstat_errbuf); 418 break; 419 case 1: { 420 int retval; 421 422 num_devices = cur.dinfo->numdevs; 423 generation = cur.dinfo->generation; 424 425 retval = selectdevs(&dev_select, &num_selected, 426 &num_selections, &select_generation, 427 generation, cur.dinfo->devices, 428 num_devices, matches, num_matches, 429 specified_devices, 430 num_devices_specified, select_mode, 431 maxshowdevs, 0); 432 switch (retval) { 433 case -1: 434 errx(1, "%s", devstat_errbuf); 435 break; 436 case 1: 437 printhdr(); 438 break; 439 default: 440 break; 441 } 442 } 443 default: 444 break; 445 } 446 447 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) { 448 perror("sysctlbyname: vm.vmstats"); 449 exit(1); 450 } 451 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 452 perror("sysctlbyname: vm.vmmeter"); 453 exit(1); 454 } 455 if (sysctlbyname("vm.vmtotal", &total, &vmt_size, NULL, 0)) { 456 perror("sysctlbyname: vm.vmtotal"); 457 exit(1); 458 } 459 printf("%2d %1d %1d", 460 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw); 461 #define vmstat_pgtok(a) ((a) * vms.v_page_size >> 10) 462 #define rate(x) (((x) + halfuptime) / uptime) /* round */ 463 printf(" %7ld %6ld ", 464 (long)vmstat_pgtok(total.t_avm), (long)vmstat_pgtok(total.t_free)); 465 printf("%4lu ", 466 (u_long)rate(vmm.v_vm_faults - ovmm.v_vm_faults)); 467 printf("%3lu ", 468 (u_long)rate(vmm.v_reactivated - ovmm.v_reactivated)); 469 printf("%3lu ", 470 (u_long)rate(vmm.v_swapin + vmm.v_vnodein - 471 (ovmm.v_swapin + ovmm.v_vnodein))); 472 printf("%3lu ", 473 (u_long)rate(vmm.v_swapout + vmm.v_vnodeout - 474 (ovmm.v_swapout + ovmm.v_vnodeout))); 475 printf("%3lu ", 476 (u_long)rate(vmm.v_tfree - ovmm.v_tfree)); 477 printf("%3lu ", 478 (u_long)rate(vmm.v_pdpages - ovmm.v_pdpages)); 479 devstats(); 480 printf("%4lu %4lu %3lu ", 481 (u_long)rate(vmm.v_intr - ovmm.v_intr), 482 (u_long)rate(vmm.v_syscall - ovmm.v_syscall), 483 (u_long)rate(vmm.v_swtch - ovmm.v_swtch)); 484 cpustats(); 485 printf("\n"); 486 fflush(stdout); 487 if (reps >= 0 && --reps <= 0) 488 break; 489 ovmm = vmm; 490 uptime = interval; 491 /* 492 * We round upward to avoid losing low-frequency events 493 * (i.e., >= 1 per interval but < 1 per second). 494 */ 495 if (interval != 1) 496 halfuptime = (uptime + 1) / 2; 497 else 498 halfuptime = 0; 499 sleep(interval); 500 } 501 } 502 503 static void 504 printhdr(void) 505 { 506 int i, num_shown; 507 508 num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs; 509 printf(" procs memory page%*s", 19, ""); 510 if (num_shown > 1) 511 printf(" disks %*s", num_shown * 4 - 7, ""); 512 else if (num_shown == 1) 513 printf("disk"); 514 printf(" faults cpu\n"); 515 printf(" r b w avm fre flt re pi po fr sr "); 516 for (i = 0; i < num_devices; i++) 517 if ((dev_select[i].selected) 518 && (dev_select[i].selected <= maxshowdevs)) 519 printf("%c%c%d ", dev_select[i].device_name[0], 520 dev_select[i].device_name[1], 521 dev_select[i].unit_number); 522 printf(" in sy cs us sy id\n"); 523 hdrcnt = winlines - 2; 524 } 525 526 /* 527 * Force a header to be prepended to the next output. 528 */ 529 static void 530 needhdr(__unused int signo) 531 { 532 533 hdrcnt = 1; 534 } 535 536 static long 537 pct(long top, long bot) 538 { 539 long ans; 540 541 if (bot == 0) 542 return(0); 543 ans = (quad_t)top * 100 / bot; 544 return (ans); 545 } 546 547 #define PCT(top, bot) pct((long)(top), (long)(bot)) 548 549 static void 550 dosum(void) 551 { 552 struct nchstats *nch_tmp, nchstats; 553 int vms_size = sizeof(vms); 554 int vmm_size = sizeof(vmm); 555 int cpucnt; 556 u_long nchtotal; 557 size_t nch_size = sizeof(struct nchstats) * SMP_MAXCPU; 558 559 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) { 560 perror("sysctlbyname: vm.vmstats"); 561 exit(1); 562 } 563 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 564 perror("sysctlbyname: vm.vmstats"); 565 exit(1); 566 } 567 printf("%9u cpu context switches\n", vmm.v_swtch); 568 printf("%9u device interrupts\n", vmm.v_intr); 569 printf("%9u software interrupts\n", vmm.v_soft); 570 printf("%9u traps\n", vmm.v_trap); 571 printf("%9u system calls\n", vmm.v_syscall); 572 printf("%9u kernel threads created\n", vmm.v_kthreads); 573 printf("%9u fork() calls\n", vmm.v_forks); 574 printf("%9u vfork() calls\n", vmm.v_vforks); 575 printf("%9u rfork() calls\n", vmm.v_rforks); 576 printf("%9u exec() calls\n", vmm.v_exec); 577 printf("%9u swap pager pageins\n", vmm.v_swapin); 578 printf("%9u swap pager pages paged in\n", vmm.v_swappgsin); 579 printf("%9u swap pager pageouts\n", vmm.v_swapout); 580 printf("%9u swap pager pages paged out\n", vmm.v_swappgsout); 581 printf("%9u vnode pager pageins\n", vmm.v_vnodein); 582 printf("%9u vnode pager pages paged in\n", vmm.v_vnodepgsin); 583 printf("%9u vnode pager pageouts\n", vmm.v_vnodeout); 584 printf("%9u vnode pager pages paged out\n", vmm.v_vnodepgsout); 585 printf("%9u page daemon wakeups\n", vmm.v_pdwakeups); 586 printf("%9u pages examined by the page daemon\n", vmm.v_pdpages); 587 printf("%9u pages reactivated\n", vmm.v_reactivated); 588 printf("%9u copy-on-write faults\n", vmm.v_cow_faults); 589 printf("%9u copy-on-write optimized faults\n", vmm.v_cow_optim); 590 printf("%9u zero fill pages zeroed\n", vmm.v_zfod); 591 printf("%9u zero fill pages prezeroed\n", vmm.v_ozfod); 592 printf("%9u intransit blocking page faults\n", vmm.v_intrans); 593 printf("%9u total VM faults taken\n", vmm.v_vm_faults); 594 printf("%9u pages affected by kernel thread creation\n", vmm.v_kthreadpages); 595 printf("%9u pages affected by fork()\n", vmm.v_forkpages); 596 printf("%9u pages affected by vfork()\n", vmm.v_vforkpages); 597 printf("%9u pages affected by rfork()\n", vmm.v_rforkpages); 598 printf("%9u pages freed\n", vmm.v_tfree); 599 printf("%9u pages freed by daemon\n", vmm.v_dfree); 600 printf("%9u pages freed by exiting processes\n", vmm.v_pfree); 601 printf("%9u pages active\n", vms.v_active_count); 602 printf("%9u pages inactive\n", vms.v_inactive_count); 603 printf("%9u pages in VM cache\n", vms.v_cache_count); 604 printf("%9u pages wired down\n", vms.v_wire_count); 605 printf("%9u pages free\n", vms.v_free_count); 606 printf("%9u bytes per page\n", vms.v_page_size); 607 608 if ((nch_tmp = malloc(nch_size)) == NULL) { 609 perror("malloc"); 610 exit(1); 611 } else { 612 if (sysctlbyname("vfs.cache.nchstats", nch_tmp, &nch_size, NULL, 0)) { 613 perror("sysctlbyname vfs.cache.nchstats"); 614 free(nch_tmp); 615 exit(1); 616 } else { 617 if ((nch_tmp = realloc(nch_tmp, nch_size)) == NULL) { 618 perror("realloc"); 619 exit(1); 620 } 621 } 622 } 623 624 cpucnt = nch_size / sizeof(struct nchstats); 625 kvm_nch_cpuagg(nch_tmp, &nchstats, cpucnt); 626 627 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits + 628 nchstats.ncs_badhits + nchstats.ncs_falsehits + 629 nchstats.ncs_miss + nchstats.ncs_long; 630 printf("%9ld total name lookups\n", nchtotal); 631 printf( 632 "%9s cache hits (%ld%% pos + %ld%% neg) system %ld%% per-directory\n", 633 "", PCT(nchstats.ncs_goodhits, nchtotal), 634 PCT(nchstats.ncs_neghits, nchtotal), 635 PCT(nchstats.ncs_pass2, nchtotal)); 636 printf("%9s deletions %ld%%, falsehits %ld%%, toolong %ld%%\n", "", 637 PCT(nchstats.ncs_badhits, nchtotal), 638 PCT(nchstats.ncs_falsehits, nchtotal), 639 PCT(nchstats.ncs_long, nchtotal)); 640 free(nch_tmp); 641 } 642 643 #ifdef notyet 644 void 645 doforkst(void) 646 { 647 struct forkstat fks; 648 649 kread(X_FORKSTAT, &fks, sizeof(struct forkstat)); 650 printf("%d forks, %d pages, average %.2f\n", 651 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork); 652 printf("%d vforks, %d pages, average %.2f\n", 653 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork); 654 } 655 #endif 656 657 static void 658 devstats(void) 659 { 660 int dn; 661 long double transfers_per_second; 662 long double busy_seconds; 663 664 diff_cp_time.cp_user = cp_time.cp_user - old_cp_time.cp_user; 665 diff_cp_time.cp_nice = cp_time.cp_nice - old_cp_time.cp_nice; 666 diff_cp_time.cp_sys = cp_time.cp_sys - old_cp_time.cp_sys; 667 diff_cp_time.cp_intr = cp_time.cp_intr - old_cp_time.cp_intr; 668 diff_cp_time.cp_idle = cp_time.cp_idle - old_cp_time.cp_idle; 669 old_cp_time = cp_time; 670 671 busy_seconds = compute_etime(cur.busy_time, last.busy_time); 672 673 for (dn = 0; dn < num_devices; dn++) { 674 int di; 675 676 if ((dev_select[dn].selected == 0) 677 || (dev_select[dn].selected > maxshowdevs)) 678 continue; 679 680 di = dev_select[dn].position; 681 682 if (compute_stats(&cur.dinfo->devices[di], 683 &last.dinfo->devices[di], busy_seconds, 684 NULL, NULL, NULL, 685 NULL, &transfers_per_second, NULL, 686 NULL, NULL) != 0) 687 errx(1, "%s", devstat_errbuf); 688 689 printf("%3.0Lf ", transfers_per_second); 690 } 691 } 692 693 static void 694 cpustats(void) 695 { 696 uint64_t total; 697 double totusage; 698 699 total = diff_cp_time.cp_user + diff_cp_time.cp_nice + 700 diff_cp_time.cp_sys + diff_cp_time.cp_intr + diff_cp_time.cp_idle; 701 702 if (total) 703 totusage = 100.0 / total; 704 else 705 totusage = 0; 706 printf("%2.0f ", 707 (diff_cp_time.cp_user + diff_cp_time.cp_nice) * totusage); 708 printf("%2.0f ", 709 (diff_cp_time.cp_sys + diff_cp_time.cp_intr) * totusage); 710 printf("%2.0f", 711 diff_cp_time.cp_idle * totusage); 712 } 713 714 static void 715 dointr(void) 716 { 717 u_long *intrcnt, uptime; 718 u_int64_t inttotal; 719 size_t nintr, inamlen, i, size; 720 int nwidth; 721 char *intrstr; 722 char **intrname; 723 724 uptime = getuptime(); 725 if (sysctlbyname("hw.intrnames", NULL, &inamlen, NULL, 0) != 0) 726 errx(1, "sysctlbyname"); 727 intrstr = malloc(inamlen); 728 if (intrstr == NULL) 729 err(1, "malloc"); 730 sysctlbyname("hw.intrnames", intrstr, &inamlen, NULL, 0); 731 for (nintr = 0, i = 0; i < inamlen; ++i) { 732 if (intrstr[i] == 0) 733 nintr++; 734 } 735 intrname = malloc(nintr * sizeof(char *)); 736 for (i = 0; i < nintr; ++i) { 737 intrname[i] = intrstr; 738 intrstr += strlen(intrstr) + 1; 739 } 740 741 size = nintr * sizeof(*intrcnt); 742 intrcnt = malloc(size); 743 if (intrcnt == NULL) 744 err(1, "malloc"); 745 sysctlbyname("hw.intrcnt", intrcnt, &size, NULL, 0); 746 747 nwidth = 8; 748 for (i = 0; i < nintr; ++i) { 749 if (nwidth < (int)strlen(intrname[i])) 750 nwidth = (int)strlen(intrname[i]); 751 } 752 753 printf("interrupt total rate\n"); 754 inttotal = 0; 755 for (i = 0; i < nintr; ++i) { 756 if (intrcnt[i] || strncmp(intrname[i], "irq", 3) != 0) { 757 printf("%-*.*s %11lu %10lu\n", 758 nwidth, nwidth, intrname[i], 759 intrcnt[i], intrcnt[i] / uptime); 760 } 761 inttotal += intrcnt[i]; 762 } 763 printf("%-*.*s %11llu %10llu\n", 764 nwidth, nwidth, "Total", 765 inttotal, inttotal / (u_int64_t) uptime); 766 } 767 768 #define MAX_KMSTATS 200 769 770 static long 771 cpuagg(long *ary) 772 { 773 int i; 774 long ttl; 775 776 for (i = ttl = 0; i < SMP_MAXCPU; ++i) 777 ttl += ary[i]; 778 return(ttl); 779 } 780 781 static void 782 domem(void) 783 { 784 struct malloc_type *ks; 785 int i, j; 786 int first, nkms; 787 long totuse = 0, totfree = 0, totreq = 0; 788 struct malloc_type kmemstats[MAX_KMSTATS], *kmsp; 789 char buf[1024]; 790 791 kread(X_KMEMSTATISTICS, &kmsp, sizeof(kmsp)); 792 for (nkms = 0; nkms < MAX_KMSTATS && kmsp != NULL; nkms++) { 793 if (sizeof(kmemstats[0]) != kvm_read(kd, (u_long)kmsp, 794 &kmemstats[nkms], sizeof(kmemstats[0]))) 795 err(1, "kvm_read(%p)", (void *)kmsp); 796 if (sizeof(buf) != kvm_read(kd, 797 (u_long)kmemstats[nkms].ks_shortdesc, buf, sizeof(buf))) 798 err(1, "kvm_read(%p)", 799 kmemstats[nkms].ks_shortdesc); 800 buf[sizeof(buf) - 1] = '\0'; 801 kmemstats[nkms].ks_shortdesc = strdup(buf); 802 kmsp = kmemstats[nkms].ks_next; 803 } 804 if (kmsp != NULL) 805 warnx("truncated to the first %d memory types", nkms); 806 807 printf( 808 "\nMemory statistics by type Type Kern\n"); 809 printf( 810 " Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)\n"); 811 for (i = 0, ks = &kmemstats[0]; i < nkms; i++, ks++) { 812 if (ks->ks_calls == 0) 813 continue; 814 printf("%13s%6ld%6ldK%7ldK%7ldK%9lld%5u%6u", 815 ks->ks_shortdesc, 816 cpuagg(ks->ks_inuse), (cpuagg(ks->ks_memuse) + 1023) / 1024, 817 (ks->ks_maxused + 1023) / 1024, 818 (ks->ks_limit + 1023) / 1024, ks->ks_calls, 819 ks->ks_limblocks, ks->ks_mapblocks); 820 first = 1; 821 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) { 822 if ((ks->ks_size & j) == 0) 823 continue; 824 if (first) 825 printf(" "); 826 else 827 printf(","); 828 if(j<1024) 829 printf("%d",j); 830 else 831 printf("%dK",j>>10); 832 first = 0; 833 } 834 printf("\n"); 835 totuse += cpuagg(ks->ks_memuse); 836 totreq += ks->ks_calls; 837 } 838 printf("\nMemory Totals: In Use Free Requests\n"); 839 printf(" %7ldK %6ldK %8ld\n", 840 (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq); 841 } 842 843 static void 844 dozmem(void) 845 { 846 char *buf; 847 size_t bufsize; 848 849 buf = NULL; 850 bufsize = 1024; 851 for (;;) { 852 if ((buf = realloc(buf, bufsize)) == NULL) 853 err(1, "realloc()"); 854 if (sysctlbyname("vm.zone", buf, &bufsize, 0, NULL) == 0) 855 break; 856 if (errno != ENOMEM) 857 err(1, "sysctl()"); 858 bufsize *= 2; 859 } 860 buf[bufsize] = '\0'; /* play it safe */ 861 printf("%s\n\n", buf); 862 free(buf); 863 } 864 865 /* 866 * kread reads something from the kernel, given its nlist index. 867 */ 868 static void 869 kread(int nlx, void *addr, size_t size) 870 { 871 const char *sym; 872 873 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) { 874 sym = namelist[nlx].n_name; 875 if (*sym == '_') 876 ++sym; 877 errx(1, "symbol %s not defined", sym); 878 } 879 if (kvm_read(kd, namelist[nlx].n_value, addr, size) != (ssize_t)size) { 880 sym = namelist[nlx].n_name; 881 if (*sym == '_') 882 ++sym; 883 errx(1, "%s: %s", sym, kvm_geterr(kd)); 884 } 885 } 886 887 static void 888 usage(void) 889 { 890 fprintf(stderr, "%s%s", 891 "usage: vmstat [-imsz] [-c count] [-M core] [-N system] [-w wait]\n", 892 " [-n devs] [disks]\n"); 893 exit(1); 894 } 895