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 1.9 2003/11/21 22:46:15 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/dkstat.h> 45 #include <sys/uio.h> 46 #include <sys/namei.h> 47 #include <sys/malloc.h> 48 #include <sys/signal.h> 49 #include <sys/fcntl.h> 50 #include <sys/ioctl.h> 51 #include <sys/sysctl.h> 52 #include <sys/vmmeter.h> 53 54 #include <vm/vm_param.h> 55 56 #include <ctype.h> 57 #include <err.h> 58 #include <errno.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_CPTIME 0 73 { "_cp_time" }, 74 #define X_BOOTTIME 1 75 { "_boottime" }, 76 #define X_HZ 2 77 { "_hz" }, 78 #define X_STATHZ 3 79 { "_stathz" }, 80 #define X_NCHSTATS 4 81 { "_nchstats" }, 82 #define X_INTRNAMES 5 83 { "_intrnames" }, 84 #define X_EINTRNAMES 6 85 { "_eintrnames" }, 86 #define X_INTRCNT 7 87 { "_intrcnt" }, 88 #define X_EINTRCNT 8 89 { "_eintrcnt" }, 90 #define X_KMEMSTATISTICS 9 91 { "_kmemstatistics" }, 92 #define X_ZLIST 10 93 { "_zlist" }, 94 #ifdef notyet 95 #define X_DEFICIT 11 96 { "_deficit" }, 97 #define X_FORKSTAT 12 98 { "_forkstat" }, 99 #define X_REC 13 100 { "_rectime" }, 101 #define X_PGIN 14 102 { "_pgintime" }, 103 #define X_XSTATS 15 104 { "_xstats" }, 105 #define X_END 16 106 #else 107 #define X_END 11 108 #endif 109 { "" }, 110 }; 111 112 struct statinfo cur, last; 113 int num_devices, maxshowdevs; 114 long generation; 115 struct device_selection *dev_select; 116 int num_selected; 117 struct devstat_match *matches; 118 int num_matches = 0; 119 int num_devices_specified, num_selections; 120 long select_generation; 121 char **specified_devices; 122 devstat_select_mode select_mode; 123 124 struct vmmeter vmm, ovmm; 125 struct vmstats vms, ovms; 126 127 int winlines = 20; 128 int nflag = 0; 129 130 kvm_t *kd; 131 132 #define FORKSTAT 0x01 133 #define INTRSTAT 0x02 134 #define MEMSTAT 0x04 135 #define SUMSTAT 0x08 136 #define TIMESTAT 0x10 137 #define VMSTAT 0x20 138 #define ZMEMSTAT 0x40 139 140 void cpustats(), dointr(), domem(), dosum(), dozmem(); 141 void dovmstat(), kread(), usage(); 142 #ifdef notyet 143 void dotimes(), doforkst(); 144 #endif 145 void printhdr(void); 146 static void devstats(); 147 148 int 149 main(register int argc, register char **argv) 150 { 151 register 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 case '?': 212 default: 213 usage(); 214 } 215 } 216 argc -= optind; 217 argv += optind; 218 219 if (todo == 0) 220 todo = VMSTAT; 221 222 /* 223 * Discard setgid privileges if not the running kernel so that bad 224 * guys can't print interesting stuff from kernel memory. 225 */ 226 if (nlistf != NULL || memf != NULL) 227 setgid(getgid()); 228 229 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 230 if (kd == 0) 231 errx(1, "kvm_openfiles: %s", errbuf); 232 233 if ((c = kvm_nlist(kd, namelist)) != 0) { 234 if (c > 0) { 235 warnx("undefined symbols:"); 236 for (c = 0; 237 c < sizeof(namelist)/sizeof(namelist[0]); c++) 238 if (namelist[c].n_type == 0) 239 fprintf(stderr, " %s", 240 namelist[c].n_name); 241 (void)fputc('\n', stderr); 242 } else 243 warnx("kvm_nlist: %s", kvm_geterr(kd)); 244 exit(1); 245 } 246 247 if (todo & VMSTAT) { 248 char **getdrivedata(); 249 struct winsize winsize; 250 251 /* 252 * Make sure that the userland devstat version matches the 253 * kernel devstat version. If not, exit and print a 254 * message informing the user of his mistake. 255 */ 256 if (checkversion() < 0) 257 errx(1, "%s", devstat_errbuf); 258 259 260 argv = getdrivedata(argv); 261 winsize.ws_row = 0; 262 (void) ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize); 263 if (winsize.ws_row > 0) 264 winlines = winsize.ws_row; 265 266 } 267 268 #define BACKWARD_COMPATIBILITY 269 #ifdef BACKWARD_COMPATIBILITY 270 if (*argv) { 271 interval = atoi(*argv); 272 if (*++argv) 273 reps = atoi(*argv); 274 } 275 #endif 276 277 if (interval) { 278 if (!reps) 279 reps = -1; 280 } else if (reps) 281 interval = 1; 282 283 #ifdef notyet 284 if (todo & FORKSTAT) 285 doforkst(); 286 #endif 287 if (todo & MEMSTAT) 288 domem(); 289 if (todo & ZMEMSTAT) 290 dozmem(); 291 if (todo & SUMSTAT) 292 dosum(); 293 #ifdef notyet 294 if (todo & TIMESTAT) 295 dotimes(); 296 #endif 297 if (todo & INTRSTAT) 298 dointr(); 299 if (todo & VMSTAT) 300 dovmstat(interval, reps); 301 exit(0); 302 } 303 304 char ** 305 getdrivedata(char **argv) 306 { 307 if ((num_devices = getnumdevs()) < 0) 308 errx(1, "%s", devstat_errbuf); 309 310 cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 311 last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 312 bzero(cur.dinfo, sizeof(struct devinfo)); 313 bzero(last.dinfo, sizeof(struct devinfo)); 314 315 if (getdevs(&cur) == -1) 316 errx(1, "%s", devstat_errbuf); 317 318 num_devices = cur.dinfo->numdevs; 319 generation = cur.dinfo->generation; 320 321 specified_devices = (char **)malloc(sizeof(char *)); 322 for (num_devices_specified = 0; *argv; ++argv) { 323 if (isdigit(**argv)) 324 break; 325 num_devices_specified++; 326 specified_devices = (char **)realloc(specified_devices, 327 sizeof(char *) * 328 num_devices_specified); 329 specified_devices[num_devices_specified - 1] = *argv; 330 } 331 dev_select = NULL; 332 333 if (nflag == 0 && maxshowdevs < num_devices_specified) 334 maxshowdevs = num_devices_specified; 335 336 /* 337 * People are generally only interested in disk statistics when 338 * they're running vmstat. So, that's what we're going to give 339 * them if they don't specify anything by default. We'll also give 340 * them any other random devices in the system so that we get to 341 * maxshowdevs devices, if that many devices exist. If the user 342 * specifies devices on the command line, either through a pattern 343 * match or by naming them explicitly, we will give the user only 344 * those devices. 345 */ 346 if ((num_devices_specified == 0) && (num_matches == 0)) { 347 if (buildmatch("da", &matches, &num_matches) != 0) 348 errx(1, "%s", devstat_errbuf); 349 350 select_mode = DS_SELECT_ADD; 351 } else 352 select_mode = DS_SELECT_ONLY; 353 354 /* 355 * At this point, selectdevs will almost surely indicate that the 356 * device list has changed, so we don't look for return values of 0 357 * or 1. If we get back -1, though, there is an error. 358 */ 359 if (selectdevs(&dev_select, &num_selected, &num_selections, 360 &select_generation, generation, cur.dinfo->devices, 361 num_devices, matches, num_matches, specified_devices, 362 num_devices_specified, select_mode, 363 maxshowdevs, 0) == -1) 364 errx(1, "%s", devstat_errbuf); 365 366 return(argv); 367 } 368 369 long 370 getuptime(void) 371 { 372 static time_t now, boottime; 373 time_t uptime; 374 375 if (boottime == 0) 376 kread(X_BOOTTIME, &boottime, sizeof(boottime)); 377 (void)time(&now); 378 uptime = now - boottime; 379 if (uptime <= 0 || uptime > 60*60*24*365*10) 380 errx(1, "time makes no sense; namelist must be wrong"); 381 return(uptime); 382 } 383 384 int hz, hdrcnt; 385 386 void 387 dovmstat(u_int interval, int reps) 388 { 389 struct vmtotal total; 390 time_t uptime, halfuptime; 391 struct devinfo *tmp_dinfo; 392 void needhdr(); 393 int mib[2]; 394 size_t size; 395 int vmm_size = sizeof(vmm); 396 int vms_size = sizeof(vms); 397 int vmt_size = sizeof(total); 398 399 uptime = getuptime(); 400 halfuptime = uptime / 2; 401 (void)signal(SIGCONT, needhdr); 402 403 if (namelist[X_STATHZ].n_type != 0 && namelist[X_STATHZ].n_value != 0) 404 kread(X_STATHZ, &hz, sizeof(hz)); 405 if (!hz) 406 kread(X_HZ, &hz, sizeof(hz)); 407 408 for (hdrcnt = 1;;) { 409 if (!--hdrcnt) 410 printhdr(); 411 kread(X_CPTIME, cur.cp_time, sizeof(cur.cp_time)); 412 413 tmp_dinfo = last.dinfo; 414 last.dinfo = cur.dinfo; 415 cur.dinfo = tmp_dinfo; 416 last.busy_time = cur.busy_time; 417 418 /* 419 * Here what we want to do is refresh our device stats. 420 * getdevs() returns 1 when the device list has changed. 421 * If the device list has changed, we want to go through 422 * the selection process again, in case a device that we 423 * were previously displaying has gone away. 424 */ 425 switch (getdevs(&cur)) { 426 case -1: 427 errx(1, "%s", devstat_errbuf); 428 break; 429 case 1: { 430 int retval; 431 432 num_devices = cur.dinfo->numdevs; 433 generation = cur.dinfo->generation; 434 435 retval = selectdevs(&dev_select, &num_selected, 436 &num_selections, &select_generation, 437 generation, cur.dinfo->devices, 438 num_devices, matches, num_matches, 439 specified_devices, 440 num_devices_specified, select_mode, 441 maxshowdevs, 0); 442 switch (retval) { 443 case -1: 444 errx(1, "%s", devstat_errbuf); 445 break; 446 case 1: 447 printhdr(); 448 break; 449 default: 450 break; 451 } 452 } 453 default: 454 break; 455 } 456 457 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) { 458 perror("sysctlbyname: vm.vmstats"); 459 exit(1); 460 } 461 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 462 perror("sysctlbyname: vm.vmmeter"); 463 exit(1); 464 } 465 if (sysctlbyname("vm.vmtotal", &total, &vmt_size, NULL, 0)) { 466 perror("sysctlbyname: vm.vmtotal"); 467 exit(1); 468 } 469 (void)printf("%2d %1d %1d", 470 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw); 471 #define vmstat_pgtok(a) ((a) * vms.v_page_size >> 10) 472 #define rate(x) (((x) + halfuptime) / uptime) /* round */ 473 (void)printf(" %7ld %6ld ", 474 (long)vmstat_pgtok(total.t_avm), (long)vmstat_pgtok(total.t_free)); 475 (void)printf("%4lu ", 476 (u_long)rate(vmm.v_vm_faults - ovmm.v_vm_faults)); 477 (void)printf("%3lu ", 478 (u_long)rate(vmm.v_reactivated - ovmm.v_reactivated)); 479 (void)printf("%3lu ", 480 (u_long)rate(vmm.v_swapin + vmm.v_vnodein - 481 (ovmm.v_swapin + ovmm.v_vnodein))); 482 (void)printf("%3lu ", 483 (u_long)rate(vmm.v_swapout + vmm.v_vnodeout - 484 (ovmm.v_swapout + ovmm.v_vnodeout))); 485 (void)printf("%3lu ", 486 (u_long)rate(vmm.v_tfree - ovmm.v_tfree)); 487 (void)printf("%3lu ", 488 (u_long)rate(vmm.v_pdpages - ovmm.v_pdpages)); 489 devstats(); 490 (void)printf("%4lu %4lu %3lu ", 491 (u_long)rate(vmm.v_intr - ovmm.v_intr), 492 (u_long)rate(vmm.v_syscall - ovmm.v_syscall), 493 (u_long)rate(vmm.v_swtch - ovmm.v_swtch)); 494 cpustats(); 495 (void)printf("\n"); 496 (void)fflush(stdout); 497 if (reps >= 0 && --reps <= 0) 498 break; 499 ovmm = vmm; 500 uptime = interval; 501 /* 502 * We round upward to avoid losing low-frequency events 503 * (i.e., >= 1 per interval but < 1 per second). 504 */ 505 if (interval != 1) 506 halfuptime = (uptime + 1) / 2; 507 else 508 halfuptime = 0; 509 (void)sleep(interval); 510 } 511 } 512 513 void 514 printhdr(void) 515 { 516 int i, num_shown; 517 518 num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs; 519 (void)printf(" procs memory page%*s", 19, ""); 520 if (num_shown > 1) 521 (void)printf(" disks %*s", num_shown * 4 - 7, ""); 522 else if (num_shown == 1) 523 (void)printf("disk"); 524 (void)printf(" faults cpu\n"); 525 (void)printf(" r b w avm fre flt re pi po fr sr "); 526 for (i = 0; i < num_devices; i++) 527 if ((dev_select[i].selected) 528 && (dev_select[i].selected <= maxshowdevs)) 529 (void)printf("%c%c%d ", dev_select[i].device_name[0], 530 dev_select[i].device_name[1], 531 dev_select[i].unit_number); 532 (void)printf(" in sy cs us sy id\n"); 533 hdrcnt = winlines - 2; 534 } 535 536 /* 537 * Force a header to be prepended to the next output. 538 */ 539 void 540 needhdr(void) 541 { 542 543 hdrcnt = 1; 544 } 545 546 long 547 pct(long top, long bot) 548 { 549 long ans; 550 551 if (bot == 0) 552 return(0); 553 ans = (quad_t)top * 100 / bot; 554 return (ans); 555 } 556 557 #define PCT(top, bot) pct((long)(top), (long)(bot)) 558 559 void 560 dosum(void) 561 { 562 struct nchstats nchstats; 563 long nchtotal; 564 int vms_size = sizeof(vms); 565 int vmm_size = sizeof(vmm); 566 567 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) { 568 perror("sysctlbyname: vm.vmstats"); 569 exit(1); 570 } 571 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 572 perror("sysctlbyname: vm.vmstats"); 573 exit(1); 574 } 575 (void)printf("%9u cpu context switches\n", vmm.v_swtch); 576 (void)printf("%9u device interrupts\n", vmm.v_intr); 577 (void)printf("%9u software interrupts\n", vmm.v_soft); 578 (void)printf("%9u traps\n", vmm.v_trap); 579 (void)printf("%9u system calls\n", vmm.v_syscall); 580 (void)printf("%9u kernel threads created\n", vmm.v_kthreads); 581 (void)printf("%9u fork() calls\n", vmm.v_forks); 582 (void)printf("%9u vfork() calls\n", vmm.v_vforks); 583 (void)printf("%9u rfork() calls\n", vmm.v_rforks); 584 (void)printf("%9u swap pager pageins\n", vmm.v_swapin); 585 (void)printf("%9u swap pager pages paged in\n", vmm.v_swappgsin); 586 (void)printf("%9u swap pager pageouts\n", vmm.v_swapout); 587 (void)printf("%9u swap pager pages paged out\n", vmm.v_swappgsout); 588 (void)printf("%9u vnode pager pageins\n", vmm.v_vnodein); 589 (void)printf("%9u vnode pager pages paged in\n", vmm.v_vnodepgsin); 590 (void)printf("%9u vnode pager pageouts\n", vmm.v_vnodeout); 591 (void)printf("%9u vnode pager pages paged out\n", vmm.v_vnodepgsout); 592 (void)printf("%9u page daemon wakeups\n", vmm.v_pdwakeups); 593 (void)printf("%9u pages examined by the page daemon\n", vmm.v_pdpages); 594 (void)printf("%9u pages reactivated\n", vmm.v_reactivated); 595 (void)printf("%9u copy-on-write faults\n", vmm.v_cow_faults); 596 (void)printf("%9u copy-on-write optimized faults\n", vmm.v_cow_optim); 597 (void)printf("%9u zero fill pages zeroed\n", vmm.v_zfod); 598 (void)printf("%9u zero fill pages prezeroed\n", vmm.v_ozfod); 599 (void)printf("%9u intransit blocking page faults\n", vmm.v_intrans); 600 (void)printf("%9u total VM faults taken\n", vmm.v_vm_faults); 601 (void)printf("%9u pages affected by kernel thread creation\n", vmm.v_kthreadpages); 602 (void)printf("%9u pages affected by fork()\n", vmm.v_forkpages); 603 (void)printf("%9u pages affected by vfork()\n", vmm.v_vforkpages); 604 (void)printf("%9u pages affected by rfork()\n", vmm.v_rforkpages); 605 (void)printf("%9u pages freed\n", vmm.v_tfree); 606 (void)printf("%9u pages freed by daemon\n", vmm.v_dfree); 607 (void)printf("%9u pages freed by exiting processes\n", vmm.v_pfree); 608 (void)printf("%9u pages active\n", vms.v_active_count); 609 (void)printf("%9u pages inactive\n", vms.v_inactive_count); 610 (void)printf("%9u pages in VM cache\n", vms.v_cache_count); 611 (void)printf("%9u pages wired down\n", vms.v_wire_count); 612 (void)printf("%9u pages free\n", vms.v_free_count); 613 (void)printf("%9u bytes per page\n", vms.v_page_size); 614 kread(X_NCHSTATS, &nchstats, sizeof(nchstats)); 615 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits + 616 nchstats.ncs_badhits + nchstats.ncs_falsehits + 617 nchstats.ncs_miss + nchstats.ncs_long; 618 (void)printf("%9ld total name lookups\n", nchtotal); 619 (void)printf( 620 "%9s cache hits (%ld%% pos + %ld%% neg) system %ld%% per-directory\n", 621 "", PCT(nchstats.ncs_goodhits, nchtotal), 622 PCT(nchstats.ncs_neghits, nchtotal), 623 PCT(nchstats.ncs_pass2, nchtotal)); 624 (void)printf("%9s deletions %ld%%, falsehits %ld%%, toolong %ld%%\n", "", 625 PCT(nchstats.ncs_badhits, nchtotal), 626 PCT(nchstats.ncs_falsehits, nchtotal), 627 PCT(nchstats.ncs_long, nchtotal)); 628 } 629 630 #ifdef notyet 631 void 632 doforkst(void) 633 { 634 struct forkstat fks; 635 636 kread(X_FORKSTAT, &fks, sizeof(struct forkstat)); 637 (void)printf("%d forks, %d pages, average %.2f\n", 638 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork); 639 (void)printf("%d vforks, %d pages, average %.2f\n", 640 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork); 641 } 642 #endif 643 644 static void 645 devstats(void) 646 { 647 register int dn, state; 648 long double transfers_per_second; 649 long double busy_seconds; 650 long tmp; 651 652 for (state = 0; state < CPUSTATES; ++state) { 653 tmp = cur.cp_time[state]; 654 cur.cp_time[state] -= last.cp_time[state]; 655 last.cp_time[state] = tmp; 656 } 657 658 busy_seconds = compute_etime(cur.busy_time, last.busy_time); 659 660 for (dn = 0; dn < num_devices; dn++) { 661 int di; 662 663 if ((dev_select[dn].selected == 0) 664 || (dev_select[dn].selected > maxshowdevs)) 665 continue; 666 667 di = dev_select[dn].position; 668 669 if (compute_stats(&cur.dinfo->devices[di], 670 &last.dinfo->devices[di], busy_seconds, 671 NULL, NULL, NULL, 672 NULL, &transfers_per_second, NULL, 673 NULL, NULL) != 0) 674 errx(1, "%s", devstat_errbuf); 675 676 printf("%3.0Lf ", transfers_per_second); 677 } 678 } 679 680 void 681 cpustats(void) 682 { 683 register int state; 684 double pct, total; 685 686 total = 0; 687 for (state = 0; state < CPUSTATES; ++state) 688 total += cur.cp_time[state]; 689 if (total) 690 pct = 100 / total; 691 else 692 pct = 0; 693 (void)printf("%2.0f ", (cur.cp_time[CP_USER] + 694 cur.cp_time[CP_NICE]) * pct); 695 (void)printf("%2.0f ", (cur.cp_time[CP_SYS] + 696 cur.cp_time[CP_INTR]) * pct); 697 (void)printf("%2.0f", cur.cp_time[CP_IDLE] * pct); 698 } 699 700 void 701 dointr(void) 702 { 703 register u_long *intrcnt, uptime; 704 register u_int64_t inttotal; 705 register int nintr, inamlen; 706 register char *intrname; 707 708 uptime = getuptime(); 709 nintr = namelist[X_EINTRCNT].n_value - namelist[X_INTRCNT].n_value; 710 inamlen = 711 namelist[X_EINTRNAMES].n_value - namelist[X_INTRNAMES].n_value; 712 intrcnt = malloc((size_t)nintr); 713 intrname = malloc((size_t)inamlen); 714 if (intrcnt == NULL || intrname == NULL) 715 errx(1, "malloc"); 716 kread(X_INTRCNT, intrcnt, (size_t)nintr); 717 kread(X_INTRNAMES, intrname, (size_t)inamlen); 718 (void)printf("interrupt total rate\n"); 719 inttotal = 0; 720 nintr /= sizeof(long); 721 while (--nintr >= 0) { 722 if (*intrcnt) 723 (void)printf("%-12s %20lu %10lu\n", intrname, 724 *intrcnt, *intrcnt / uptime); 725 intrname += strlen(intrname) + 1; 726 inttotal += *intrcnt++; 727 } 728 (void)printf("Total %20llu %10llu\n", inttotal, 729 inttotal / (u_int64_t) uptime); 730 } 731 732 #define MAX_KMSTATS 200 733 734 static 735 long 736 cpuagg(long *ary) 737 { 738 int i; 739 long ttl; 740 741 for (i = ttl = 0; i < SMP_MAXCPU; ++i) 742 ttl += ary[i]; 743 return(ttl); 744 } 745 746 void 747 domem(void) 748 { 749 register struct malloc_type *ks; 750 register int i, j; 751 int len, size, first, nkms; 752 long totuse = 0, totfree = 0, totreq = 0; 753 const char *name; 754 struct malloc_type kmemstats[MAX_KMSTATS], *kmsp; 755 char buf[1024]; 756 757 kread(X_KMEMSTATISTICS, &kmsp, sizeof(kmsp)); 758 for (nkms = 0; nkms < MAX_KMSTATS && kmsp != NULL; nkms++) { 759 if (sizeof(kmemstats[0]) != kvm_read(kd, (u_long)kmsp, 760 &kmemstats[nkms], sizeof(kmemstats[0]))) 761 err(1, "kvm_read(%p)", (void *)kmsp); 762 if (sizeof(buf) != kvm_read(kd, 763 (u_long)kmemstats[nkms].ks_shortdesc, buf, sizeof(buf))) 764 err(1, "kvm_read(%p)", 765 (void *)kmemstats[nkms].ks_shortdesc); 766 buf[sizeof(buf) - 1] = '\0'; 767 kmemstats[nkms].ks_shortdesc = strdup(buf); 768 kmsp = kmemstats[nkms].ks_next; 769 } 770 if (kmsp != NULL) 771 warnx("truncated to the first %d memory types", nkms); 772 773 (void)printf( 774 "\nMemory statistics by type Type Kern\n"); 775 (void)printf( 776 " Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)\n"); 777 for (i = 0, ks = &kmemstats[0]; i < nkms; i++, ks++) { 778 if (ks->ks_calls == 0) 779 continue; 780 (void)printf("%13s%6ld%6ldK%7ldK%6ldK%9lld%5u%6u", 781 ks->ks_shortdesc, 782 cpuagg(ks->ks_inuse), (cpuagg(ks->ks_memuse) + 1023) / 1024, 783 (ks->ks_maxused + 1023) / 1024, 784 (ks->ks_limit + 1023) / 1024, ks->ks_calls, 785 ks->ks_limblocks, ks->ks_mapblocks); 786 first = 1; 787 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) { 788 if ((ks->ks_size & j) == 0) 789 continue; 790 if (first) 791 printf(" "); 792 else 793 printf(","); 794 if(j<1024) 795 printf("%d",j); 796 else 797 printf("%dK",j>>10); 798 first = 0; 799 } 800 printf("\n"); 801 totuse += cpuagg(ks->ks_memuse); 802 totreq += ks->ks_calls; 803 } 804 (void)printf("\nMemory Totals: In Use Free Requests\n"); 805 (void)printf(" %7ldK %6ldK %8ld\n", 806 (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq); 807 } 808 809 void 810 dozmem(void) 811 { 812 char *buf; 813 size_t bufsize; 814 815 buf = NULL; 816 bufsize = 1024; 817 for (;;) { 818 if ((buf = realloc(buf, bufsize)) == NULL) 819 err(1, "realloc()"); 820 if (sysctlbyname("vm.zone", buf, &bufsize, 0, NULL) == 0) 821 break; 822 if (errno != ENOMEM) 823 err(1, "sysctl()"); 824 bufsize *= 2; 825 } 826 buf[bufsize] = '\0'; /* play it safe */ 827 (void)printf("%s\n\n", buf); 828 free(buf); 829 } 830 831 /* 832 * kread reads something from the kernel, given its nlist index. 833 */ 834 void 835 kread(int nlx, void *addr, size_t size) 836 { 837 char *sym; 838 839 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) { 840 sym = namelist[nlx].n_name; 841 if (*sym == '_') 842 ++sym; 843 errx(1, "symbol %s not defined", sym); 844 } 845 if (kvm_read(kd, namelist[nlx].n_value, addr, size) != size) { 846 sym = namelist[nlx].n_name; 847 if (*sym == '_') 848 ++sym; 849 errx(1, "%s: %s", sym, kvm_geterr(kd)); 850 } 851 } 852 853 void 854 usage(void) 855 { 856 (void)fprintf(stderr, "%s%s", 857 "usage: vmstat [-imsz] [-c count] [-M core] [-N system] [-w wait]\n", 858 " [-n devs] [disks]\n"); 859 exit(1); 860 } 861