| 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 | } |