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 1.4 2003/07/30 05:19:54 hmp Exp $ 37 */ 38 39 #include <sys/param.h> 40 #include <sys/time.h> 41 #include <sys/proc.h> 42 #include <sys/dkstat.h> 43 #include <sys/uio.h> 44 #include <sys/namei.h> 45 #include <sys/malloc.h> 46 #include <sys/signal.h> 47 #include <sys/fcntl.h> 48 #include <sys/ioctl.h> 49 #include <sys/sysctl.h> 50 #include <sys/vmmeter.h> 51 52 #include <vm/vm_param.h> 53 54 #include <ctype.h> 55 #include <err.h> 56 #include <errno.h> 57 #include <kvm.h> 58 #include <limits.h> 59 #include <nlist.h> 60 #include <paths.h> 61 #include <stdio.h> 62 #include <stdlib.h> 63 #include <string.h> 64 #include <sysexits.h> 65 #include <time.h> 66 #include <unistd.h> 67 #include <devstat.h> 68 69 static struct nlist namelist[] = { 70 #define X_CPTIME 0 71 { "_cp_time" }, 72 #define X_BOOTTIME 1 73 { "_boottime" }, 74 #define X_HZ 2 75 { "_hz" }, 76 #define X_STATHZ 3 77 { "_stathz" }, 78 #define X_NCHSTATS 4 79 { "_nchstats" }, 80 #define X_INTRNAMES 5 81 { "_intrnames" }, 82 #define X_EINTRNAMES 6 83 { "_eintrnames" }, 84 #define X_INTRCNT 7 85 { "_intrcnt" }, 86 #define X_EINTRCNT 8 87 { "_eintrcnt" }, 88 #define X_KMEMSTATISTICS 9 89 { "_kmemstatistics" }, 90 #define X_KMEMBUCKETS 10 91 { "_bucket" }, 92 #define X_ZLIST 11 93 { "_zlist" }, 94 #ifdef notyet 95 #define X_DEFICIT 12 96 { "_deficit" }, 97 #define X_FORKSTAT 13 98 { "_forkstat" }, 99 #define X_REC 14 100 { "_rectime" }, 101 #define X_PGIN 15 102 { "_pgintime" }, 103 #define X_XSTATS 16 104 { "_xstats" }, 105 #define X_END 17 106 #else 107 #define X_END 12 108 #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 __P((void)); 146 static void devstats(); 147 148 int 149 main(argc, argv) 150 register int argc; 151 register char **argv; 152 { 153 register int c, todo; 154 u_int interval; 155 int reps; 156 char *memf, *nlistf; 157 char errbuf[_POSIX2_LINE_MAX]; 158 159 memf = nlistf = NULL; 160 interval = reps = todo = 0; 161 maxshowdevs = 2; 162 while ((c = getopt(argc, argv, "c:fiM:mN:n:p:stw:z")) != -1) { 163 switch (c) { 164 case 'c': 165 reps = atoi(optarg); 166 break; 167 case 'f': 168 #ifdef notyet 169 todo |= FORKSTAT; 170 #else 171 errx(EX_USAGE, "sorry, -f is not (re)implemented yet"); 172 #endif 173 break; 174 case 'i': 175 todo |= INTRSTAT; 176 break; 177 case 'M': 178 memf = optarg; 179 break; 180 case 'm': 181 todo |= MEMSTAT; 182 break; 183 case 'N': 184 nlistf = optarg; 185 break; 186 case 'n': 187 nflag = 1; 188 maxshowdevs = atoi(optarg); 189 if (maxshowdevs < 0) 190 errx(1, "number of devices %d is < 0", 191 maxshowdevs); 192 break; 193 case 'p': 194 if (buildmatch(optarg, &matches, &num_matches) != 0) 195 errx(1, "%s", devstat_errbuf); 196 break; 197 case 's': 198 todo |= SUMSTAT; 199 break; 200 case 't': 201 #ifdef notyet 202 todo |= TIMESTAT; 203 #else 204 errx(EX_USAGE, "sorry, -t is not (re)implemented yet"); 205 #endif 206 break; 207 case 'w': 208 interval = atoi(optarg); 209 break; 210 case 'z': 211 todo |= ZMEMSTAT; 212 break; 213 case '?': 214 default: 215 usage(); 216 } 217 } 218 argc -= optind; 219 argv += optind; 220 221 if (todo == 0) 222 todo = VMSTAT; 223 224 /* 225 * Discard setgid privileges if not the running kernel so that bad 226 * guys can't print interesting stuff from kernel memory. 227 */ 228 if (nlistf != NULL || memf != NULL) 229 setgid(getgid()); 230 231 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 232 if (kd == 0) 233 errx(1, "kvm_openfiles: %s", errbuf); 234 235 if ((c = kvm_nlist(kd, namelist)) != 0) { 236 if (c > 0) { 237 warnx("undefined symbols:"); 238 for (c = 0; 239 c < sizeof(namelist)/sizeof(namelist[0]); c++) 240 if (namelist[c].n_type == 0) 241 fprintf(stderr, " %s", 242 namelist[c].n_name); 243 (void)fputc('\n', stderr); 244 } else 245 warnx("kvm_nlist: %s", kvm_geterr(kd)); 246 exit(1); 247 } 248 249 if (todo & VMSTAT) { 250 char **getdrivedata(); 251 struct winsize winsize; 252 253 /* 254 * Make sure that the userland devstat version matches the 255 * kernel devstat version. If not, exit and print a 256 * message informing the user of his mistake. 257 */ 258 if (checkversion() < 0) 259 errx(1, "%s", devstat_errbuf); 260 261 262 argv = getdrivedata(argv); 263 winsize.ws_row = 0; 264 (void) ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize); 265 if (winsize.ws_row > 0) 266 winlines = winsize.ws_row; 267 268 } 269 270 #define BACKWARD_COMPATIBILITY 271 #ifdef BACKWARD_COMPATIBILITY 272 if (*argv) { 273 interval = atoi(*argv); 274 if (*++argv) 275 reps = atoi(*argv); 276 } 277 #endif 278 279 if (interval) { 280 if (!reps) 281 reps = -1; 282 } else if (reps) 283 interval = 1; 284 285 #ifdef notyet 286 if (todo & FORKSTAT) 287 doforkst(); 288 #endif 289 if (todo & MEMSTAT) 290 domem(); 291 if (todo & ZMEMSTAT) 292 dozmem(); 293 if (todo & SUMSTAT) 294 dosum(); 295 #ifdef notyet 296 if (todo & TIMESTAT) 297 dotimes(); 298 #endif 299 if (todo & INTRSTAT) 300 dointr(); 301 if (todo & VMSTAT) 302 dovmstat(interval, reps); 303 exit(0); 304 } 305 306 char ** 307 getdrivedata(argv) 308 char **argv; 309 { 310 if ((num_devices = getnumdevs()) < 0) 311 errx(1, "%s", devstat_errbuf); 312 313 cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 314 last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); 315 bzero(cur.dinfo, sizeof(struct devinfo)); 316 bzero(last.dinfo, sizeof(struct devinfo)); 317 318 if (getdevs(&cur) == -1) 319 errx(1, "%s", devstat_errbuf); 320 321 num_devices = cur.dinfo->numdevs; 322 generation = cur.dinfo->generation; 323 324 specified_devices = (char **)malloc(sizeof(char *)); 325 for (num_devices_specified = 0; *argv; ++argv) { 326 if (isdigit(**argv)) 327 break; 328 num_devices_specified++; 329 specified_devices = (char **)realloc(specified_devices, 330 sizeof(char *) * 331 num_devices_specified); 332 specified_devices[num_devices_specified - 1] = *argv; 333 } 334 dev_select = NULL; 335 336 if (nflag == 0 && maxshowdevs < num_devices_specified) 337 maxshowdevs = num_devices_specified; 338 339 /* 340 * People are generally only interested in disk statistics when 341 * they're running vmstat. So, that's what we're going to give 342 * them if they don't specify anything by default. We'll also give 343 * them any other random devices in the system so that we get to 344 * maxshowdevs devices, if that many devices exist. If the user 345 * specifies devices on the command line, either through a pattern 346 * match or by naming them explicitly, we will give the user only 347 * those devices. 348 */ 349 if ((num_devices_specified == 0) && (num_matches == 0)) { 350 if (buildmatch("da", &matches, &num_matches) != 0) 351 errx(1, "%s", devstat_errbuf); 352 353 select_mode = DS_SELECT_ADD; 354 } else 355 select_mode = DS_SELECT_ONLY; 356 357 /* 358 * At this point, selectdevs will almost surely indicate that the 359 * device list has changed, so we don't look for return values of 0 360 * or 1. If we get back -1, though, there is an error. 361 */ 362 if (selectdevs(&dev_select, &num_selected, &num_selections, 363 &select_generation, generation, cur.dinfo->devices, 364 num_devices, matches, num_matches, specified_devices, 365 num_devices_specified, select_mode, 366 maxshowdevs, 0) == -1) 367 errx(1, "%s", devstat_errbuf); 368 369 return(argv); 370 } 371 372 long 373 getuptime() 374 { 375 static time_t now, boottime; 376 time_t uptime; 377 378 if (boottime == 0) 379 kread(X_BOOTTIME, &boottime, sizeof(boottime)); 380 (void)time(&now); 381 uptime = now - boottime; 382 if (uptime <= 0 || uptime > 60*60*24*365*10) 383 errx(1, "time makes no sense; namelist must be wrong"); 384 return(uptime); 385 } 386 387 int hz, hdrcnt; 388 389 void 390 dovmstat(interval, reps) 391 u_int interval; 392 int reps; 393 { 394 struct vmtotal total; 395 time_t uptime, halfuptime; 396 struct devinfo *tmp_dinfo; 397 void needhdr(); 398 int mib[2]; 399 size_t size; 400 int vmm_size = sizeof(vmm); 401 int vms_size = sizeof(vms); 402 int vmt_size = sizeof(total); 403 404 uptime = getuptime(); 405 halfuptime = uptime / 2; 406 (void)signal(SIGCONT, needhdr); 407 408 if (namelist[X_STATHZ].n_type != 0 && namelist[X_STATHZ].n_value != 0) 409 kread(X_STATHZ, &hz, sizeof(hz)); 410 if (!hz) 411 kread(X_HZ, &hz, sizeof(hz)); 412 413 for (hdrcnt = 1;;) { 414 if (!--hdrcnt) 415 printhdr(); 416 kread(X_CPTIME, cur.cp_time, sizeof(cur.cp_time)); 417 418 tmp_dinfo = last.dinfo; 419 last.dinfo = cur.dinfo; 420 cur.dinfo = tmp_dinfo; 421 last.busy_time = cur.busy_time; 422 423 /* 424 * Here what we want to do is refresh our device stats. 425 * getdevs() returns 1 when the device list has changed. 426 * If the device list has changed, we want to go through 427 * the selection process again, in case a device that we 428 * were previously displaying has gone away. 429 */ 430 switch (getdevs(&cur)) { 431 case -1: 432 errx(1, "%s", devstat_errbuf); 433 break; 434 case 1: { 435 int retval; 436 437 num_devices = cur.dinfo->numdevs; 438 generation = cur.dinfo->generation; 439 440 retval = selectdevs(&dev_select, &num_selected, 441 &num_selections, &select_generation, 442 generation, cur.dinfo->devices, 443 num_devices, matches, num_matches, 444 specified_devices, 445 num_devices_specified, select_mode, 446 maxshowdevs, 0); 447 switch (retval) { 448 case -1: 449 errx(1, "%s", devstat_errbuf); 450 break; 451 case 1: 452 printhdr(); 453 break; 454 default: 455 break; 456 } 457 } 458 default: 459 break; 460 } 461 462 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) { 463 perror("sysctlbyname: vm.vmstats"); 464 exit(1); 465 } 466 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 467 perror("sysctlbyname: vm.vmstats"); 468 exit(1); 469 } 470 if (sysctlbyname("vm.vmtotal", &total, &vmt_size, NULL, 0)) { 471 perror("sysctlbyname: vm.vmtotal"); 472 exit(1); 473 } 474 (void)printf("%2d %1d %1d", 475 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw); 476 #define vmstat_pgtok(a) ((a) * vms.v_page_size >> 10) 477 #define rate(x) (((x) + halfuptime) / uptime) /* round */ 478 (void)printf(" %7ld %6ld ", 479 (long)vmstat_pgtok(total.t_avm), (long)vmstat_pgtok(total.t_free)); 480 (void)printf("%4lu ", 481 (u_long)rate(vmm.v_vm_faults - ovmm.v_vm_faults)); 482 (void)printf("%3lu ", 483 (u_long)rate(vmm.v_reactivated - ovmm.v_reactivated)); 484 (void)printf("%3lu ", 485 (u_long)rate(vmm.v_swapin + vmm.v_vnodein - 486 (ovmm.v_swapin + ovmm.v_vnodein))); 487 (void)printf("%3lu ", 488 (u_long)rate(vmm.v_swapout + vmm.v_vnodeout - 489 (ovmm.v_swapout + ovmm.v_vnodeout))); 490 (void)printf("%3lu ", 491 (u_long)rate(vmm.v_tfree - ovmm.v_tfree)); 492 (void)printf("%3lu ", 493 (u_long)rate(vmm.v_pdpages - ovmm.v_pdpages)); 494 devstats(); 495 (void)printf("%4lu %4lu %3lu ", 496 (u_long)rate(vmm.v_intr - ovmm.v_intr), 497 (u_long)rate(vmm.v_syscall - ovmm.v_syscall), 498 (u_long)rate(vmm.v_swtch - ovmm.v_swtch)); 499 cpustats(); 500 (void)printf("\n"); 501 (void)fflush(stdout); 502 if (reps >= 0 && --reps <= 0) 503 break; 504 ovmm = vmm; 505 uptime = interval; 506 /* 507 * We round upward to avoid losing low-frequency events 508 * (i.e., >= 1 per interval but < 1 per second). 509 */ 510 if (interval != 1) 511 halfuptime = (uptime + 1) / 2; 512 else 513 halfuptime = 0; 514 (void)sleep(interval); 515 } 516 } 517 518 void 519 printhdr() 520 { 521 int i, num_shown; 522 523 num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs; 524 (void)printf(" procs memory page%*s", 19, ""); 525 if (num_shown > 1) 526 (void)printf(" disks %*s", num_shown * 4 - 7, ""); 527 else if (num_shown == 1) 528 (void)printf("disk"); 529 (void)printf(" faults cpu\n"); 530 (void)printf(" r b w avm fre flt re pi po fr sr "); 531 for (i = 0; i < num_devices; i++) 532 if ((dev_select[i].selected) 533 && (dev_select[i].selected <= maxshowdevs)) 534 (void)printf("%c%c%d ", dev_select[i].device_name[0], 535 dev_select[i].device_name[1], 536 dev_select[i].unit_number); 537 (void)printf(" in sy cs us sy id\n"); 538 hdrcnt = winlines - 2; 539 } 540 541 /* 542 * Force a header to be prepended to the next output. 543 */ 544 void 545 needhdr() 546 { 547 548 hdrcnt = 1; 549 } 550 551 long 552 pct(top, bot) 553 long top, bot; 554 { 555 long ans; 556 557 if (bot == 0) 558 return(0); 559 ans = (quad_t)top * 100 / bot; 560 return (ans); 561 } 562 563 #define PCT(top, bot) pct((long)(top), (long)(bot)) 564 565 void 566 dosum() 567 { 568 struct nchstats nchstats; 569 long nchtotal; 570 int vms_size = sizeof(vms); 571 int vmm_size = sizeof(vmm); 572 573 if (sysctlbyname("vm.vmstats", &vms, &vms_size, NULL, 0)) { 574 perror("sysctlbyname: vm.vmstats"); 575 exit(1); 576 } 577 if (sysctlbyname("vm.vmmeter", &vmm, &vmm_size, NULL, 0)) { 578 perror("sysctlbyname: vm.vmstats"); 579 exit(1); 580 } 581 (void)printf("%9u cpu context switches\n", vmm.v_swtch); 582 (void)printf("%9u device interrupts\n", vmm.v_intr); 583 (void)printf("%9u software interrupts\n", vmm.v_soft); 584 (void)printf("%9u traps\n", vmm.v_trap); 585 (void)printf("%9u system calls\n", vmm.v_syscall); 586 (void)printf("%9u kernel threads created\n", vmm.v_kthreads); 587 (void)printf("%9u fork() calls\n", vmm.v_forks); 588 (void)printf("%9u vfork() calls\n", vmm.v_vforks); 589 (void)printf("%9u rfork() calls\n", vmm.v_rforks); 590 (void)printf("%9u swap pager pageins\n", vmm.v_swapin); 591 (void)printf("%9u swap pager pages paged in\n", vmm.v_swappgsin); 592 (void)printf("%9u swap pager pageouts\n", vmm.v_swapout); 593 (void)printf("%9u swap pager pages paged out\n", vmm.v_swappgsout); 594 (void)printf("%9u vnode pager pageins\n", vmm.v_vnodein); 595 (void)printf("%9u vnode pager pages paged in\n", vmm.v_vnodepgsin); 596 (void)printf("%9u vnode pager pageouts\n", vmm.v_vnodeout); 597 (void)printf("%9u vnode pager pages paged out\n", vmm.v_vnodepgsout); 598 (void)printf("%9u page daemon wakeups\n", vmm.v_pdwakeups); 599 (void)printf("%9u pages examined by the page daemon\n", vmm.v_pdpages); 600 (void)printf("%9u pages reactivated\n", vmm.v_reactivated); 601 (void)printf("%9u copy-on-write faults\n", vmm.v_cow_faults); 602 (void)printf("%9u copy-on-write optimized faults\n", vmm.v_cow_optim); 603 (void)printf("%9u zero fill pages zeroed\n", vmm.v_zfod); 604 (void)printf("%9u zero fill pages prezeroed\n", vmm.v_ozfod); 605 (void)printf("%9u intransit blocking page faults\n", vmm.v_intrans); 606 (void)printf("%9u total VM faults taken\n", vmm.v_vm_faults); 607 (void)printf("%9u pages affected by kernel thread creation\n", vmm.v_kthreadpages); 608 (void)printf("%9u pages affected by fork()\n", vmm.v_forkpages); 609 (void)printf("%9u pages affected by vfork()\n", vmm.v_vforkpages); 610 (void)printf("%9u pages affected by rfork()\n", vmm.v_rforkpages); 611 (void)printf("%9u pages freed\n", vmm.v_tfree); 612 (void)printf("%9u pages freed by daemon\n", vmm.v_dfree); 613 (void)printf("%9u pages freed by exiting processes\n", vmm.v_pfree); 614 (void)printf("%9u pages active\n", vms.v_active_count); 615 (void)printf("%9u pages inactive\n", vms.v_inactive_count); 616 (void)printf("%9u pages in VM cache\n", vms.v_cache_count); 617 (void)printf("%9u pages wired down\n", vms.v_wire_count); 618 (void)printf("%9u pages free\n", vms.v_free_count); 619 (void)printf("%9u bytes per page\n", vms.v_page_size); 620 kread(X_NCHSTATS, &nchstats, sizeof(nchstats)); 621 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits + 622 nchstats.ncs_badhits + nchstats.ncs_falsehits + 623 nchstats.ncs_miss + nchstats.ncs_long; 624 (void)printf("%9ld total name lookups\n", nchtotal); 625 (void)printf( 626 "%9s cache hits (%ld%% pos + %ld%% neg) system %ld%% per-directory\n", 627 "", PCT(nchstats.ncs_goodhits, nchtotal), 628 PCT(nchstats.ncs_neghits, nchtotal), 629 PCT(nchstats.ncs_pass2, nchtotal)); 630 (void)printf("%9s deletions %ld%%, falsehits %ld%%, toolong %ld%%\n", "", 631 PCT(nchstats.ncs_badhits, nchtotal), 632 PCT(nchstats.ncs_falsehits, nchtotal), 633 PCT(nchstats.ncs_long, nchtotal)); 634 } 635 636 #ifdef notyet 637 void 638 doforkst() 639 { 640 struct forkstat fks; 641 642 kread(X_FORKSTAT, &fks, sizeof(struct forkstat)); 643 (void)printf("%d forks, %d pages, average %.2f\n", 644 fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork); 645 (void)printf("%d vforks, %d pages, average %.2f\n", 646 fks.cntvfork, fks.sizvfork, (double)fks.sizvfork / fks.cntvfork); 647 } 648 #endif 649 650 static void 651 devstats() 652 { 653 register int dn, state; 654 long double transfers_per_second; 655 long double busy_seconds; 656 long tmp; 657 658 for (state = 0; state < CPUSTATES; ++state) { 659 tmp = cur.cp_time[state]; 660 cur.cp_time[state] -= last.cp_time[state]; 661 last.cp_time[state] = tmp; 662 } 663 664 busy_seconds = compute_etime(cur.busy_time, last.busy_time); 665 666 for (dn = 0; dn < num_devices; dn++) { 667 int di; 668 669 if ((dev_select[dn].selected == 0) 670 || (dev_select[dn].selected > maxshowdevs)) 671 continue; 672 673 di = dev_select[dn].position; 674 675 if (compute_stats(&cur.dinfo->devices[di], 676 &last.dinfo->devices[di], busy_seconds, 677 NULL, NULL, NULL, 678 NULL, &transfers_per_second, NULL, 679 NULL, NULL) != 0) 680 errx(1, "%s", devstat_errbuf); 681 682 printf("%3.0Lf ", transfers_per_second); 683 } 684 } 685 686 void 687 cpustats() 688 { 689 register int state; 690 double pct, total; 691 692 total = 0; 693 for (state = 0; state < CPUSTATES; ++state) 694 total += cur.cp_time[state]; 695 if (total) 696 pct = 100 / total; 697 else 698 pct = 0; 699 (void)printf("%2.0f ", (cur.cp_time[CP_USER] + 700 cur.cp_time[CP_NICE]) * pct); 701 (void)printf("%2.0f ", (cur.cp_time[CP_SYS] + 702 cur.cp_time[CP_INTR]) * pct); 703 (void)printf("%2.0f", cur.cp_time[CP_IDLE] * pct); 704 } 705 706 void 707 dointr() 708 { 709 register u_long *intrcnt, uptime; 710 register u_int64_t inttotal; 711 register int nintr, inamlen; 712 register char *intrname; 713 714 uptime = getuptime(); 715 nintr = namelist[X_EINTRCNT].n_value - namelist[X_INTRCNT].n_value; 716 inamlen = 717 namelist[X_EINTRNAMES].n_value - namelist[X_INTRNAMES].n_value; 718 intrcnt = malloc((size_t)nintr); 719 intrname = malloc((size_t)inamlen); 720 if (intrcnt == NULL || intrname == NULL) 721 errx(1, "malloc"); 722 kread(X_INTRCNT, intrcnt, (size_t)nintr); 723 kread(X_INTRNAMES, intrname, (size_t)inamlen); 724 (void)printf("interrupt total rate\n"); 725 inttotal = 0; 726 nintr /= sizeof(long); 727 while (--nintr >= 0) { 728 if (*intrcnt) 729 (void)printf("%-12s %20lu %10lu\n", intrname, 730 *intrcnt, *intrcnt / uptime); 731 intrname += strlen(intrname) + 1; 732 inttotal += *intrcnt++; 733 } 734 (void)printf("Total %20llu %10llu\n", inttotal, 735 inttotal / (u_int64_t) uptime); 736 } 737 738 #define MAX_KMSTATS 200 739 740 void 741 domem() 742 { 743 register struct kmembuckets *kp; 744 register struct malloc_type *ks; 745 register int i, j; 746 int len, size, first, nkms; 747 long totuse = 0, totfree = 0, totreq = 0; 748 const char *name; 749 struct malloc_type kmemstats[MAX_KMSTATS], *kmsp; 750 char buf[1024]; 751 struct kmembuckets buckets[MINBUCKET + 16]; 752 753 kread(X_KMEMBUCKETS, buckets, sizeof(buckets)); 754 kread(X_KMEMSTATISTICS, &kmsp, sizeof(kmsp)); 755 for (nkms = 0; nkms < MAX_KMSTATS && kmsp != NULL; nkms++) { 756 if (sizeof(kmemstats[0]) != kvm_read(kd, (u_long)kmsp, 757 &kmemstats[nkms], sizeof(kmemstats[0]))) 758 err(1, "kvm_read(%p)", (void *)kmsp); 759 if (sizeof(buf) != kvm_read(kd, 760 (u_long)kmemstats[nkms].ks_shortdesc, buf, sizeof(buf))) 761 err(1, "kvm_read(%p)", 762 (void *)kmemstats[nkms].ks_shortdesc); 763 buf[sizeof(buf) - 1] = '\0'; 764 kmemstats[nkms].ks_shortdesc = strdup(buf); 765 kmsp = kmemstats[nkms].ks_next; 766 } 767 if (kmsp != NULL) 768 warnx("truncated to the first %d memory types", nkms); 769 (void)printf("Memory statistics by bucket size\n"); 770 (void)printf( 771 "Size In Use Free Requests HighWater Couldfree\n"); 772 for (i = MINBUCKET, kp = &buckets[i]; i < MINBUCKET + 16; i++, kp++) { 773 if (kp->kb_calls == 0) 774 continue; 775 size = 1 << i; 776 if(size < 1024) 777 (void)printf("%4d",size); 778 else 779 (void)printf("%3dK",size>>10); 780 (void)printf(" %8ld %6ld %10lld %7ld %10ld\n", 781 kp->kb_total - kp->kb_totalfree, 782 kp->kb_totalfree, kp->kb_calls, 783 kp->kb_highwat, kp->kb_couldfree); 784 totfree += size * kp->kb_totalfree; 785 } 786 787 (void)printf("\nMemory usage type by bucket size\n"); 788 (void)printf("Size Type(s)\n"); 789 kp = &buckets[MINBUCKET]; 790 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1, kp++) { 791 if (kp->kb_calls == 0) 792 continue; 793 first = 1; 794 len = 8; 795 for (i = 0, ks = &kmemstats[0]; i < nkms; i++, ks++) { 796 if (ks->ks_calls == 0) 797 continue; 798 if ((ks->ks_size & j) == 0) 799 continue; 800 name = ks->ks_shortdesc; 801 len += 2 + strlen(name); 802 if (first && j < 1024) 803 printf("%4d %s", j, name); 804 else if (first) 805 printf("%3dK %s", j>>10, name); 806 else 807 printf(","); 808 if (len >= 79) { 809 printf("\n\t "); 810 len = 10 + strlen(name); 811 } 812 if (!first) 813 printf(" %s", name); 814 first = 0; 815 } 816 printf("\n"); 817 } 818 819 (void)printf( 820 "\nMemory statistics by type Type Kern\n"); 821 (void)printf( 822 " Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)\n"); 823 for (i = 0, ks = &kmemstats[0]; i < nkms; i++, ks++) { 824 if (ks->ks_calls == 0) 825 continue; 826 (void)printf("%13s%6ld%6ldK%7ldK%6ldK%9lld%5u%6u", 827 ks->ks_shortdesc, 828 ks->ks_inuse, (ks->ks_memuse + 1023) / 1024, 829 (ks->ks_maxused + 1023) / 1024, 830 (ks->ks_limit + 1023) / 1024, ks->ks_calls, 831 ks->ks_limblocks, ks->ks_mapblocks); 832 first = 1; 833 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) { 834 if ((ks->ks_size & j) == 0) 835 continue; 836 if (first) 837 printf(" "); 838 else 839 printf(","); 840 if(j<1024) 841 printf("%d",j); 842 else 843 printf("%dK",j>>10); 844 first = 0; 845 } 846 printf("\n"); 847 totuse += ks->ks_memuse; 848 totreq += ks->ks_calls; 849 } 850 (void)printf("\nMemory Totals: In Use Free Requests\n"); 851 (void)printf(" %7ldK %6ldK %8ld\n", 852 (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq); 853 } 854 855 void 856 dozmem() 857 { 858 char *buf; 859 size_t bufsize; 860 861 buf = NULL; 862 bufsize = 1024; 863 for (;;) { 864 if ((buf = realloc(buf, bufsize)) == NULL) 865 err(1, "realloc()"); 866 if (sysctlbyname("vm.zone", buf, &bufsize, 0, NULL) == 0) 867 break; 868 if (errno != ENOMEM) 869 err(1, "sysctl()"); 870 bufsize *= 2; 871 } 872 buf[bufsize] = '\0'; /* play it safe */ 873 (void)printf("%s\n\n", buf); 874 free(buf); 875 } 876 877 /* 878 * kread reads something from the kernel, given its nlist index. 879 */ 880 void 881 kread(nlx, addr, size) 882 int nlx; 883 void *addr; 884 size_t size; 885 { 886 char *sym; 887 888 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) { 889 sym = namelist[nlx].n_name; 890 if (*sym == '_') 891 ++sym; 892 errx(1, "symbol %s not defined", sym); 893 } 894 if (kvm_read(kd, namelist[nlx].n_value, addr, size) != size) { 895 sym = namelist[nlx].n_name; 896 if (*sym == '_') 897 ++sym; 898 errx(1, "%s: %s", sym, kvm_geterr(kd)); 899 } 900 } 901 902 void 903 usage() 904 { 905 (void)fprintf(stderr, "%s%s", 906 "usage: vmstat [-imsz] [-c count] [-M core] [-N system] [-w wait]\n", 907 " [-n devs] [disks]\n"); 908 exit(1); 909 } 910