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 34 #ifndef lint 35 static const char copyright[] = 36 "@(#) Copyright (c) 1980, 1986, 1991, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "@(#)vmstat.c 8.1 (Berkeley) 6/6/93"; 43 #endif 44 static const char rcsid[] = 45 "$FreeBSD$"; 46 #endif /* not lint */ 47 48 #include <sys/param.h> 49 #include <sys/time.h> 50 #include <sys/proc.h> 51 #include <sys/dkstat.h> 52 #include <sys/uio.h> 53 #include <sys/namei.h> 54 #include <sys/malloc.h> 55 #include <sys/signal.h> 56 #include <sys/fcntl.h> 57 #include <sys/ioctl.h> 58 #include <sys/sysctl.h> 59 #include <sys/vmmeter.h> 60 61 #include <vm/vm_param.h> 62 63 #include <ctype.h> 64 #include <err.h> 65 #include <errno.h> 66 #include <kvm.h> 67 #include <limits.h> 68 #include <nlist.h> 69 #include <paths.h> 70 #include <stdio.h> 71 #include <stdlib.h> 72 #include <string.h> 73 #include <sysexits.h> 74 #include <time.h> 75 #include <unistd.h> 76 #include <devstat.h> 77 78 struct nlist namelist[] = { 79 #define X_CPTIME 0 80 { "_cp_time" }, 81 #define X_SUM 1 82 { "_cnt" }, 83 #define X_BOOTTIME 2 84 { "_boottime" }, 85 #define X_HZ 3 86 { "_hz" }, 87 #define X_STATHZ 4 88 { "_stathz" }, 89 #define X_NCHSTATS 5 90 { "_nchstats" }, 91 #define X_INTRNAMES 6 92 { "_intrnames" }, 93 #define X_EINTRNAMES 7 94 { "_eintrnames" }, 95 #define X_INTRCNT 8 96 { "_intrcnt" }, 97 #define X_EINTRCNT 9 98 { "_eintrcnt" }, 99 #define X_KMEMSTATISTICS 10 100 { "_kmemstatistics" }, 101 #define X_KMEMBUCKETS 11 102 { "_bucket" }, 103 #define X_ZLIST 12 104 { "_zlist" }, 105 #ifdef notyet 106 #define X_DEFICIT 13 107 { "_deficit" }, 108 #define X_FORKSTAT 14 109 { "_forkstat" }, 110 #define X_REC 15 111 { "_rectime" }, 112 #define X_PGIN 16 113 { "_pgintime" }, 114 #define X_XSTATS 17 115 { "_xstats" }, 116 #define X_END 18 117 #else 118 #define X_END 13 119 #endif 120 { "" }, 121 }; 122 123 struct statinfo cur, last; 124 int num_devices, maxshowdevs; 125 long generation; 126 struct device_selection *dev_select; 127 int num_selected; 128 struct devstat_match *matches; 129 int num_matches = 0; 130 int num_devices_specified, num_selections; 131 long select_generation; 132 char **specified_devices; 133 devstat_select_mode select_mode; 134 135 struct vmmeter sum, osum; 136 137 int winlines = 20; 138 int nflag = 0; 139 140 kvm_t *kd; 141 142 #define FORKSTAT 0x01 143 #define INTRSTAT 0x02 144 #define MEMSTAT 0x04 145 #define SUMSTAT 0x08 146 #define TIMESTAT 0x10 147 #define VMSTAT 0x20 148 #define ZMEMSTAT 0x40 149 150 void cpustats(), dointr(), domem(), dosum(), dozmem(); 151 void dovmstat(), kread(), usage(); 152 #ifdef notyet 153 void dotimes(), doforkst(); 154 #endif 155 void printhdr __P((void)); 156 static void devstats(); 157 158 int 159 main(argc, argv) 160 register int argc; 161 register char **argv; 162 { 163 register int c, todo; 164 u_int interval; 165 int reps; 166 char *memf, *nlistf; 167 char errbuf[_POSIX2_LINE_MAX]; 168 169 memf = nlistf = NULL; 170 interval = reps = todo = 0; 171 maxshowdevs = 2; 172 while ((c = getopt(argc, argv, "c:fiM:mN:n:p:stw:z")) != -1) { 173 switch (c) { 174 case 'c': 175 reps = atoi(optarg); 176 break; 177 case 'f': 178 #ifdef notyet 179 todo |= FORKSTAT; 180 #else 181 errx(EX_USAGE, "sorry, -f is not (re)implemented yet"); 182 #endif 183 break; 184 case 'i': 185 todo |= INTRSTAT; 186 break; 187 case 'M': 188 memf = optarg; 189 break; 190 case 'm': 191 todo |= MEMSTAT; 192 break; 193 case 'N': 194 nlistf = optarg; 195 break; 196 case 'n': 197 nflag = 1; 198 maxshowdevs = atoi(optarg); 199 if (maxshowdevs < 0) 200 errx(1, "number of devices %d is < 0", 201 maxshowdevs); 202 break; 203 case 'p': 204 if (buildmatch(optarg, &matches, &num_matches) != 0) 205 errx(1, "%s", devstat_errbuf); 206 break; 207 case 's': 208 todo |= SUMSTAT; 209 break; 210 case 't': 211 #ifdef notyet 212 todo |= TIMESTAT; 213 #else 214 errx(EX_USAGE, "sorry, -t is not (re)implemented yet"); 215 #endif 216 break; 217 case 'w': 218 interval = atoi(optarg); 219 break; 220 case 'z': 221 todo |= ZMEMSTAT; 222 break; 223 case '?': 224 default: 225 usage(); 226 } 227 } 228 argc -= optind; 229 argv += optind; 230 231 if (todo == 0) 232 todo = VMSTAT; 233 234 /* 235 * Discard setgid privileges if not the running kernel so that bad 236 * guys can't print interesting stuff from kernel memory. 237 */ 238 if (nlistf != NULL || memf != NULL) 239 setgid(getgid()); 240 241 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 242 if (kd == 0) 243 errx(1, "kvm_openfiles: %s", errbuf); 244 setgid(getgid()); 245 246 if ((c = kvm_nlist(kd, namelist)) != 0) { 247 if (c > 0) { 248 warnx("undefined symbols:"); 249 for (c = 0; 250 c < sizeof(namelist)/sizeof(namelist[0]); c++) 251 if (namelist[c].n_type == 0) 252 (void)fprintf(stderr, " %s", 253 namelist[c].n_name); 254 (void)fputc('\n', stderr); 255 } else 256 warnx("kvm_nlist: %s", kvm_geterr(kd)); 257 exit(1); 258 } 259 260 if (todo & VMSTAT) { 261 char **getdrivedata(); 262 struct winsize winsize; 263 264 /* 265 * Make sure that the userland devstat version matches the 266 * kernel devstat version. If not, exit and print a 267 * message informing the user of his mistake. 268 */ 269 if (checkversion() < 0) 270 errx(1, "%s", devstat_errbuf); 271 272 273 argv = getdrivedata(argv); 274 winsize.ws_row = 0; 275 (void) ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize); 276 if (winsize.ws_row > 0) 277 winlines = winsize.ws_row; 278 279 } 280 281 #define BACKWARD_COMPATIBILITY 282 #ifdef BACKWARD_COMPATIBILITY 283 if (*argv) { 284 interval = atoi(*argv); 285 if (*++argv) 286 reps = atoi(*argv); 287 } 288 #endif 289 290 if (interval) { 291 if (!reps) 292 reps = -1; 293 } else if (reps) 294 interval = 1; 295 296 #ifdef notyet 297 if (todo & FORKSTAT) 298 doforkst(); 299 #endif 300 if (todo & MEMSTAT) 301 domem(); 302 if (todo & ZMEMSTAT) 303 dozmem(); 304 if (todo & SUMSTAT) 305 dosum(); 306 #ifdef notyet 307 if (todo & TIMESTAT) 308 dotimes(); 309 #endif 310 if (todo & INTRSTAT) 311 dointr(); 312 if (todo & VMSTAT) 313 dovmstat(interval, reps); 314 exit(0); 315 } 316 317 char ** 318 getdrivedata(argv) 319 char **argv; 320 { 321 if ((num_devices = getnumdevs()) < 0) 322 errx(1, "%s", devstat_errbuf); 323 324 cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 325 last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 326 bzero(cur.dinfo, sizeof(struct devinfo)); 327 bzero(last.dinfo, sizeof(struct devinfo)); 328 329 if (getdevs(&cur) == -1) 330 errx(1, "%s", devstat_errbuf); 331 332 num_devices = cur.dinfo->numdevs; 333 generation = cur.dinfo->generation; 334 335 specified_devices = (char **)malloc(sizeof(char *)); 336 for (num_devices_specified = 0; *argv; ++argv) { 337 if (isdigit(**argv)) 338 break; 339 num_devices_specified++; 340 specified_devices = (char **)realloc(specified_devices, 341 sizeof(char *) * 342 num_devices_specified); 343 specified_devices[num_devices_specified - 1] = *argv; 344 } 345 dev_select = NULL; 346 347 if (nflag == 0 && maxshowdevs < num_devices_specified) 348 maxshowdevs = num_devices_specified; 349 350 /* 351 * People are generally only interested in disk statistics when 352 * they're running vmstat. So, that's what we're going to give 353 * them if they don't specify anything by default. We'll also give 354 * them any other random devices in the system so that we get to 355 * maxshowdevs devices, if that many devices exist. If the user 356 * specifies devices on the command line, either through a pattern 357 * match or by naming them explicitly, we will give the user only 358 * those devices. 359 */ 360 if ((num_devices_specified == 0) && (num_matches == 0)) { 361 if (buildmatch("da", &matches, &num_matches) != 0) 362 errx(1, "%s", devstat_errbuf); 363 364 select_mode = DS_SELECT_ADD; 365 } else 366 select_mode = DS_SELECT_ONLY; 367 368 /* 369 * At this point, selectdevs will almost surely indicate that the 370 * device list has changed, so we don't look for return values of 0 371 * or 1. If we get back -1, though, there is an error. 372 */ 373 if (selectdevs(&dev_select, &num_selected, &num_selections, 374 &select_generation, generation, cur.dinfo->devices, 375 num_devices, matches, num_matches, specified_devices, 376 num_devices_specified, select_mode, 377 maxshowdevs, 0) == -1) 378 errx(1, "%s", devstat_errbuf); 379 380 return(argv); 381 } 382 383 long 384 getuptime() 385 { 386 static time_t now, boottime; 387 time_t uptime; 388 389 if (boottime == 0) 390 kread(X_BOOTTIME, &boottime, sizeof(boottime)); 391 (void)time(&now); 392 uptime = now - boottime; 393 if (uptime <= 0 || uptime > 60*60*24*365*10) 394 errx(1, "time makes no sense; namelist must be wrong"); 395 return(uptime); 396 } 397 398 int hz, hdrcnt; 399 400 void 401 dovmstat(interval, reps) 402 u_int interval; 403 int reps; 404 { 405 struct vmtotal total; 406 time_t uptime, halfuptime; 407 struct devinfo *tmp_dinfo; 408 void needhdr(); 409 int mib[2]; 410 size_t size; 411 412 uptime = getuptime(); 413 halfuptime = uptime / 2; 414 (void)signal(SIGCONT, needhdr); 415 416 if (namelist[X_STATHZ].n_type != 0 && namelist[X_STATHZ].n_value != 0) 417 kread(X_STATHZ, &hz, sizeof(hz)); 418 if (!hz) 419 kread(X_HZ, &hz, sizeof(hz)); 420 421 for (hdrcnt = 1;;) { 422 if (!--hdrcnt) 423 printhdr(); 424 kread(X_CPTIME, cur.cp_time, sizeof(cur.cp_time)); 425 426 tmp_dinfo = last.dinfo; 427 last.dinfo = cur.dinfo; 428 cur.dinfo = tmp_dinfo; 429 last.busy_time = cur.busy_time; 430 431 /* 432 * Here what we want to do is refresh our device stats. 433 * getdevs() returns 1 when the device list has changed. 434 * If the device list has changed, we want to go through 435 * the selection process again, in case a device that we 436 * were previously displaying has gone away. 437 */ 438 switch (getdevs(&cur)) { 439 case -1: 440 errx(1, "%s", devstat_errbuf); 441 break; 442 case 1: { 443 int retval; 444 445 num_devices = cur.dinfo->numdevs; 446 generation = cur.dinfo->generation; 447 448 retval = selectdevs(&dev_select, &num_selected, 449 &num_selections, &select_generation, 450 generation, cur.dinfo->devices, 451 num_devices, matches, num_matches, 452 specified_devices, 453 num_devices_specified, select_mode, 454 maxshowdevs, 0); 455 switch (retval) { 456 case -1: 457 errx(1, "%s", devstat_errbuf); 458 break; 459 case 1: 460 printhdr(); 461 break; 462 default: 463 break; 464 } 465 } 466 default: 467 break; 468 } 469 470 kread(X_SUM, &sum, sizeof(sum)); 471 size = sizeof(total); 472 mib[0] = CTL_VM; 473 mib[1] = VM_METER; 474 if (sysctl(mib, 2, &total, &size, NULL, 0) < 0) { 475 (void)printf("Can't get kerninfo: %s\n", 476 strerror(errno)); 477 bzero(&total, sizeof(total)); 478 } 479 (void)printf("%2d %1d %1d", 480 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw); 481 #define vmstat_pgtok(a) ((a) * sum.v_page_size >> 10) 482 #define rate(x) (((x) + halfuptime) / uptime) /* round */ 483 (void)printf(" %7ld %6ld ", (long)vmstat_pgtok(total.t_avm), 484 (long)vmstat_pgtok(total.t_free)); 485 (void)printf("%4lu ", 486 (u_long)rate(sum.v_vm_faults - osum.v_vm_faults)); 487 (void)printf("%3lu ", 488 (u_long)rate(sum.v_reactivated - osum.v_reactivated)); 489 (void)printf("%3lu ", 490 (u_long)rate(sum.v_swapin + sum.v_vnodein - 491 (osum.v_swapin + osum.v_vnodein))); 492 (void)printf("%3lu ", 493 (u_long)rate(sum.v_swapout + sum.v_vnodeout - 494 (osum.v_swapout + osum.v_vnodeout))); 495 (void)printf("%3lu ", 496 (u_long)rate(sum.v_tfree - osum.v_tfree)); 497 (void)printf("%3lu ", 498 (u_long)rate(sum.v_pdpages - osum.v_pdpages)); 499 devstats(); 500 (void)printf("%4lu %4lu %3lu ", 501 (u_long)rate(sum.v_intr - osum.v_intr), 502 (u_long)rate(sum.v_syscall - osum.v_syscall), 503 (u_long)rate(sum.v_swtch - osum.v_swtch)); 504 cpustats(); 505 (void)printf("\n"); 506 (void)fflush(stdout); 507 if (reps >= 0 && --reps <= 0) 508 break; 509 osum = sum; 510 uptime = interval; 511 /* 512 * We round upward to avoid losing low-frequency events 513 * (i.e., >= 1 per interval but < 1 per second). 514 */ 515 if (interval != 1) 516 halfuptime = (uptime + 1) / 2; 517 else 518 halfuptime = 0; 519 (void)sleep(interval); 520 } 521 } 522 523 void 524 printhdr() 525 { 526 int i, num_shown; 527 528 num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs; 529 (void)printf(" procs memory page%*s", 19, ""); 530 if (num_shown > 1) 531 (void)printf(" disks %*s", num_shown * 4 - 7, ""); 532 else if (num_shown == 1) 533 (void)printf("disk"); 534 (void)printf(" faults cpu\n"); 535 (void)printf(" r b w avm fre flt re pi po fr sr "); 536 for (i = 0; i < num_devices; i++) 537 if ((dev_select[i].selected) 538 && (dev_select[i].selected <= maxshowdevs)) 539 (void)printf("%c%c%d ", dev_select[i].device_name[0], 540 dev_select[i].device_name[1], 541 dev_select[i].unit_number); 542 (void)printf(" in sy cs us sy id\n"); 543 hdrcnt = winlines - 2; 544 } 545 546 /* 547 * Force a header to be prepended to the next output. 548 */ 549 void 550 needhdr() 551 { 552 553 hdrcnt = 1; 554 } 555 556 #ifdef notyet 557 void 558 dotimes() 559 { 560 u_int pgintime, rectime; 561 562 kread(X_REC, &rectime, sizeof(rectime)); 563 kread(X_PGIN, &pgintime, sizeof(pgintime)); 564 kread(X_SUM, &sum, sizeof(sum)); 565 (void)printf("%u reclaims, %u total time (usec)\n", 566 sum.v_pgrec, rectime); 567 (void)printf("average: %u usec / reclaim\n", rectime / sum.v_pgrec); 568 (void)printf("\n"); 569 (void)printf("%u page ins, %u total time (msec)\n", 570 sum.v_pgin, pgintime / 10); 571 (void)printf("average: %8.1f msec / page in\n", 572 pgintime / (sum.v_pgin * 10.0)); 573 } 574 #endif 575 576 long 577 pct(top, bot) 578 long top, bot; 579 { 580 long ans; 581 582 if (bot == 0) 583 return(0); 584 ans = (quad_t)top * 100 / bot; 585 return (ans); 586 } 587 588 #define PCT(top, bot) pct((long)(top), (long)(bot)) 589 590 void 591 dosum() 592 { 593 struct nchstats nchstats; 594 long nchtotal; 595 596 kread(X_SUM, &sum, sizeof(sum)); 597 (void)printf("%9u cpu context switches\n", sum.v_swtch); 598 (void)printf("%9u device interrupts\n", sum.v_intr); 599 (void)printf("%9u software interrupts\n", sum.v_soft); 600 (void)printf("%9u traps\n", sum.v_trap); 601 (void)printf("%9u system calls\n", sum.v_syscall); 602 (void)printf("%9u kernel threads created\n", sum.v_kthreads); 603 (void)printf("%9u fork() calls\n", sum.v_forks); 604 (void)printf("%9u vfork() calls\n", sum.v_vforks); 605 (void)printf("%9u rfork() calls\n", sum.v_rforks); 606 (void)printf("%9u swap pager pageins\n", sum.v_swapin); 607 (void)printf("%9u swap pager pages paged in\n", sum.v_swappgsin); 608 (void)printf("%9u swap pager pageouts\n", sum.v_swapout); 609 (void)printf("%9u swap pager pages paged out\n", sum.v_swappgsout); 610 (void)printf("%9u vnode pager pageins\n", sum.v_vnodein); 611 (void)printf("%9u vnode pager pages paged in\n", sum.v_vnodepgsin); 612 (void)printf("%9u vnode pager pageouts\n", sum.v_vnodeout); 613 (void)printf("%9u vnode pager pages paged out\n", sum.v_vnodepgsout); 614 (void)printf("%9u page daemon wakeups\n", sum.v_pdwakeups); 615 (void)printf("%9u pages examined by the page daemon\n", sum.v_pdpages); 616 (void)printf("%9u pages reactivated\n", sum.v_reactivated); 617 (void)printf("%9u copy-on-write faults\n", sum.v_cow_faults); 618 (void)printf("%9u copy-on-write optimized faults\n", sum.v_cow_optim); 619 (void)printf("%9u zero fill pages zeroed\n", sum.v_zfod); 620 (void)printf("%9u zero fill pages prezeroed\n", sum.v_ozfod); 621 (void)printf("%9u intransit blocking page faults\n", sum.v_intrans); 622 (void)printf("%9u total VM faults taken\n", sum.v_vm_faults); 623 (void)printf("%9u pages affected by kernel thread creation\n", sum.v_kthreadpages); 624 (void)printf("%9u pages affected by fork()\n", sum.v_forkpages); 625 (void)printf("%9u pages affected by vfork()\n", sum.v_vforkpages); 626 (void)printf("%9u pages affected by rfork()\n", sum.v_rforkpages); 627 (void)printf("%9u pages freed\n", sum.v_tfree); 628 (void)printf("%9u pages freed by daemon\n", sum.v_dfree); 629 (void)printf("%9u pages freed by exiting processes\n", sum.v_pfree); 630 (void)printf("%9u pages active\n", sum.v_active_count); 631 (void)printf("%9u pages inactive\n", sum.v_inactive_count); 632 (void)printf("%9u pages in VM cache\n", sum.v_cache_count); 633 (void)printf("%9u pages wired down\n", sum.v_wire_count); 634 (void)printf("%9u pages free\n", sum.v_free_count); 635 (void)printf("%9u bytes per page\n", sum.v_page_size); 636 kread(X_NCHSTATS, &nchstats, sizeof(nchstats)); 637 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits + 638 nchstats.ncs_badhits + nchstats.ncs_falsehits + 639 nchstats.ncs_miss + nchstats.ncs_long; 640 (void)printf("%9ld total name lookups\n", nchtotal); 641 (void)printf( 642 "%9s cache hits (%ld%% pos + %ld%% neg) system %ld%% per-directory\n", 643 "", PCT(nchstats.ncs_goodhits, nchtotal), 644 PCT(nchstats.ncs_neghits, nchtotal), 645 PCT(nchstats.ncs_pass2, nchtotal)); 646 (void)printf("%9s deletions %ld%%, falsehits %ld%%, toolong %ld%%\n", "", 647 PCT(nchstats.ncs_badhits, nchtotal), 648 PCT(nchstats.ncs_falsehits, nchtotal), 649 PCT(nchstats.ncs_long, nchtotal)); 650 } 651 652 #ifdef notyet 653 void 654 doforkst() 655 { 656 struct forkstat fks; 657 658 kread(X_FORKSTAT, &fks, sizeof(struct forkstat)); 659 (void)printf("%d forks, %d pages, average %.2f\n", 660 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork); 661 (void)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() 668 { 669 register int dn, state; 670 long double transfers_per_second; 671 long double busy_seconds; 672 long tmp; 673 674 for (state = 0; state < CPUSTATES; ++state) { 675 tmp = cur.cp_time[state]; 676 cur.cp_time[state] -= last.cp_time[state]; 677 last.cp_time[state] = tmp; 678 } 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 (devstat_compute_statistics(&cur.dinfo->devices[di], 692 &last.dinfo->devices[di], busy_seconds, 693 DSM_TRANSFERS_PER_SECOND, &transfers_per_second, 694 DSM_NONE) != 0) 695 errx(1, "%s", devstat_errbuf); 696 697 (void)printf("%3.0Lf ", transfers_per_second); 698 } 699 } 700 701 void 702 cpustats() 703 { 704 register int state; 705 double pct, total; 706 707 total = 0; 708 for (state = 0; state < CPUSTATES; ++state) 709 total += cur.cp_time[state]; 710 if (total) 711 pct = 100 / total; 712 else 713 pct = 0; 714 (void)printf("%2.0f ", (cur.cp_time[CP_USER] + 715 cur.cp_time[CP_NICE]) * pct); 716 (void)printf("%2.0f ", (cur.cp_time[CP_SYS] + 717 cur.cp_time[CP_INTR]) * pct); 718 (void)printf("%2.0f", cur.cp_time[CP_IDLE] * pct); 719 } 720 721 void 722 dointr() 723 { 724 register u_long *intrcnt, uptime; 725 register u_int64_t inttotal; 726 register int nintr, inamlen; 727 register char *intrname; 728 729 uptime = getuptime(); 730 nintr = namelist[X_EINTRCNT].n_value - namelist[X_INTRCNT].n_value; 731 inamlen = 732 namelist[X_EINTRNAMES].n_value - namelist[X_INTRNAMES].n_value; 733 intrcnt = malloc((size_t)nintr); 734 intrname = malloc((size_t)inamlen); 735 if (intrcnt == NULL || intrname == NULL) 736 errx(1, "malloc"); 737 kread(X_INTRCNT, intrcnt, (size_t)nintr); 738 kread(X_INTRNAMES, intrname, (size_t)inamlen); 739 (void)printf("interrupt total rate\n"); 740 inttotal = 0; 741 nintr /= sizeof(long); 742 while (--nintr >= 0) { 743 if (*intrcnt) 744 (void)printf("%-12s %20lu %10lu\n", intrname, 745 *intrcnt, *intrcnt / uptime); 746 intrname += strlen(intrname) + 1; 747 inttotal += *intrcnt++; 748 } 749 (void)printf("Total %20llu %10llu\n", inttotal, 750 inttotal / (u_int64_t) uptime); 751 } 752 753 #define MAX_KMSTATS 200 754 755 void 756 domem() 757 { 758 register struct kmembuckets *kp; 759 register struct malloc_type *ks; 760 register int i, j; 761 int len, size, first, nkms; 762 long totuse = 0, totfree = 0, totreq = 0; 763 const char *name; 764 struct malloc_type kmemstats[MAX_KMSTATS], *kmsp; 765 char buf[1024]; 766 struct kmembuckets buckets[MINBUCKET + 16]; 767 768 kread(X_KMEMBUCKETS, buckets, sizeof(buckets)); 769 kread(X_KMEMSTATISTICS, &kmsp, sizeof(kmsp)); 770 for (nkms = 0; nkms < MAX_KMSTATS && kmsp != NULL; nkms++) { 771 if (sizeof(kmemstats[0]) != kvm_read(kd, (u_long)kmsp, 772 &kmemstats[nkms], sizeof(kmemstats[0]))) 773 err(1, "kvm_read(%p)", (void *)kmsp); 774 if (sizeof(buf) != kvm_read(kd, 775 (u_long)kmemstats[nkms].ks_shortdesc, buf, sizeof(buf))) 776 err(1, "kvm_read(%p)", 777 (void *)kmemstats[nkms].ks_shortdesc); 778 buf[sizeof(buf) - 1] = '\0'; 779 kmemstats[nkms].ks_shortdesc = strdup(buf); 780 kmsp = kmemstats[nkms].ks_next; 781 } 782 if (kmsp != NULL) 783 warnx("truncated to the first %d memory types", nkms); 784 (void)printf("Memory statistics by bucket size\n"); 785 (void)printf( 786 "Size In Use Free Requests HighWater Couldfree\n"); 787 for (i = MINBUCKET, kp = &buckets[i]; i < MINBUCKET + 16; i++, kp++) { 788 if (kp->kb_calls == 0) 789 continue; 790 size = 1 << i; 791 if(size < 1024) 792 (void)printf("%4d",size); 793 else 794 (void)printf("%3dK",size>>10); 795 (void)printf(" %8ld %6ld %10lld %7ld %10ld\n", 796 kp->kb_total - kp->kb_totalfree, 797 kp->kb_totalfree, kp->kb_calls, 798 kp->kb_highwat, kp->kb_couldfree); 799 totfree += size * kp->kb_totalfree; 800 } 801 802 (void)printf("\nMemory usage type by bucket size\n"); 803 (void)printf("Size Type(s)\n"); 804 kp = &buckets[MINBUCKET]; 805 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1, kp++) { 806 if (kp->kb_calls == 0) 807 continue; 808 first = 1; 809 len = 8; 810 for (i = 0, ks = &kmemstats[0]; i < nkms; i++, ks++) { 811 if (ks->ks_calls == 0) 812 continue; 813 if ((ks->ks_size & j) == 0) 814 continue; 815 name = ks->ks_shortdesc; 816 len += 2 + strlen(name); 817 if (first && j < 1024) 818 (void)printf("%4d %s", j, name); 819 else if (first) 820 (void)printf("%3dK %s", j>>10, name); 821 else 822 (void)printf(","); 823 if (len >= 79) { 824 (void)printf("\n\t "); 825 len = 10 + strlen(name); 826 } 827 if (!first) 828 (void)printf(" %s", name); 829 first = 0; 830 } 831 (void)printf("\n"); 832 } 833 834 (void)printf( 835 "\nMemory statistics by type Type Kern\n"); 836 (void)printf( 837 " Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)\n"); 838 for (i = 0, ks = &kmemstats[0]; i < nkms; i++, ks++) { 839 if (ks->ks_calls == 0) 840 continue; 841 (void)printf("%13s%6ld%6ldK%7ldK%6ldK%9lld%5u%6u", 842 ks->ks_shortdesc, 843 ks->ks_inuse, (ks->ks_memuse + 1023) / 1024, 844 (ks->ks_maxused + 1023) / 1024, 845 (ks->ks_limit + 1023) / 1024, ks->ks_calls, 846 ks->ks_limblocks, ks->ks_mapblocks); 847 first = 1; 848 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) { 849 if ((ks->ks_size & j) == 0) 850 continue; 851 if (first) 852 (void)printf(" "); 853 else 854 (void)printf(","); 855 if(j<1024) 856 (void)printf("%d",j); 857 else 858 (void)printf("%dK",j>>10); 859 first = 0; 860 } 861 (void)printf("\n"); 862 totuse += ks->ks_memuse; 863 totreq += ks->ks_calls; 864 } 865 (void)printf("\nMemory Totals: In Use Free Requests\n"); 866 (void)printf(" %7ldK %6ldK %8ld\n", 867 (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq); 868 } 869 870 void 871 dozmem() 872 { 873 char *buf; 874 size_t bufsize; 875 876 buf = NULL; 877 bufsize = 1024; 878 for (;;) { 879 if ((buf = realloc(buf, bufsize)) == NULL) 880 err(1, "realloc()"); 881 if (sysctlbyname("vm.zone", buf, &bufsize, 0, NULL) == 0) 882 break; 883 if (errno != ENOMEM) 884 err(1, "sysctl()"); 885 bufsize *= 2; 886 } 887 buf[bufsize] = '\0'; /* play it safe */ 888 (void)printf("%s\n\n", buf); 889 free(buf); 890 } 891 892 /* 893 * kread reads something from the kernel, given its nlist index. 894 */ 895 void 896 kread(nlx, addr, size) 897 int nlx; 898 void *addr; 899 size_t size; 900 { 901 char *sym; 902 903 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) { 904 sym = namelist[nlx].n_name; 905 if (*sym == '_') 906 ++sym; 907 errx(1, "symbol %s not defined", sym); 908 } 909 if (kvm_read(kd, namelist[nlx].n_value, addr, size) != size) { 910 sym = namelist[nlx].n_name; 911 if (*sym == '_') 912 ++sym; 913 errx(1, "%s: %s", sym, kvm_geterr(kd)); 914 } 915 } 916 917 void 918 usage() 919 { 920 (void)fprintf(stderr, "%s%s", 921 "usage: vmstat [-imsz] [-c count] [-M core] [-N system] [-w wait]\n", 922 " [-n devs] [disks]\n"); 923 exit(1); 924 } 925