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 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef lint 31 static const char copyright[] = 32 "@(#) Copyright (c) 1980, 1986, 1991, 1993\n\ 33 The Regents of the University of California. All rights reserved.\n"; 34 #endif /* not lint */ 35 36 #if 0 37 #ifndef lint 38 static char sccsid[] = "@(#)vmstat.c 8.1 (Berkeley) 6/6/93"; 39 #endif /* not lint */ 40 #endif 41 42 #include <sys/cdefs.h> 43 __FBSDID("$FreeBSD$"); 44 45 #include <sys/param.h> 46 #include <sys/proc.h> 47 #include <sys/uio.h> 48 #include <sys/namei.h> 49 #include <sys/malloc.h> 50 #include <sys/signal.h> 51 #include <sys/fcntl.h> 52 #include <sys/ioctl.h> 53 #include <sys/resource.h> 54 #include <sys/sysctl.h> 55 #include <sys/time.h> 56 #include <sys/vmmeter.h> 57 #include <sys/pcpu.h> 58 59 #include <vm/vm_param.h> 60 61 #include <ctype.h> 62 #include <devstat.h> 63 #include <err.h> 64 #include <errno.h> 65 #include <inttypes.h> 66 #include <kvm.h> 67 #include <limits.h> 68 #include <memstat.h> 69 #include <nlist.h> 70 #include <paths.h> 71 #include <stdio.h> 72 #include <stdlib.h> 73 #include <string.h> 74 #include <sysexits.h> 75 #include <time.h> 76 #include <unistd.h> 77 #include <libutil.h> 78 79 static char da[] = "da"; 80 81 static struct nlist namelist[] = { 82 #define X_SUM 0 83 { "_vm_cnt" }, 84 #define X_HZ 1 85 { "_hz" }, 86 #define X_STATHZ 2 87 { "_stathz" }, 88 #define X_NCHSTATS 3 89 { "_nchstats" }, 90 #define X_INTRNAMES 4 91 { "_intrnames" }, 92 #define X_SINTRNAMES 5 93 { "_sintrnames" }, 94 #define X_INTRCNT 6 95 { "_intrcnt" }, 96 #define X_SINTRCNT 7 97 { "_sintrcnt" }, 98 #ifdef notyet 99 #define X_DEFICIT XXX 100 { "_deficit" }, 101 #define X_REC XXX 102 { "_rectime" }, 103 #define X_PGIN XXX 104 { "_pgintime" }, 105 #define X_XSTATS XXX 106 { "_xstats" }, 107 #define X_END XXX 108 #else 109 #define X_END 8 110 #endif 111 { "" }, 112 }; 113 114 static struct statinfo cur, last; 115 static int num_devices, maxshowdevs; 116 static long generation; 117 static struct device_selection *dev_select; 118 static int num_selected; 119 static struct devstat_match *matches; 120 static int num_matches = 0; 121 static int num_devices_specified, num_selections; 122 static long select_generation; 123 static char **specified_devices; 124 static devstat_select_mode select_mode; 125 126 static struct vmmeter sum, osum; 127 128 #define VMSTAT_DEFAULT_LINES 20 /* Default number of `winlines'. */ 129 volatile sig_atomic_t wresized; /* Tty resized, when non-zero. */ 130 static int winlines = VMSTAT_DEFAULT_LINES; /* Current number of tty rows. */ 131 132 static int aflag; 133 static int nflag; 134 static int Pflag; 135 static int hflag; 136 137 static kvm_t *kd; 138 139 #define FORKSTAT 0x01 140 #define INTRSTAT 0x02 141 #define MEMSTAT 0x04 142 #define SUMSTAT 0x08 143 #define TIMESTAT 0x10 144 #define VMSTAT 0x20 145 #define ZMEMSTAT 0x40 146 147 static void cpustats(void); 148 static void pcpustats(int, u_long, int); 149 static void devstats(void); 150 static void doforkst(void); 151 static void dointr(void); 152 static void dosum(void); 153 static void dovmstat(unsigned int, int); 154 static void domemstat_malloc(void); 155 static void domemstat_zone(void); 156 static void kread(int, void *, size_t); 157 static void kreado(int, void *, size_t, size_t); 158 static char *kgetstr(const char *); 159 static void needhdr(int); 160 static void needresize(int); 161 static void doresize(void); 162 static void printhdr(int, u_long); 163 static void usage(void); 164 165 static long pct(long, long); 166 static long getuptime(void); 167 168 static char **getdrivedata(char **); 169 170 int 171 main(int argc, char *argv[]) 172 { 173 int c, todo; 174 unsigned int interval; 175 float f; 176 int reps; 177 char *memf, *nlistf; 178 char errbuf[_POSIX2_LINE_MAX]; 179 180 memf = nlistf = NULL; 181 interval = reps = todo = 0; 182 maxshowdevs = 2; 183 hflag = isatty(1); 184 while ((c = getopt(argc, argv, "ac:fhHiM:mN:n:Pp:stw:z")) != -1) { 185 switch (c) { 186 case 'a': 187 aflag++; 188 break; 189 case 'c': 190 reps = atoi(optarg); 191 break; 192 case 'P': 193 Pflag++; 194 break; 195 case 'f': 196 todo |= FORKSTAT; 197 break; 198 case 'h': 199 hflag = 1; 200 break; 201 case 'H': 202 hflag = 0; 203 break; 204 case 'i': 205 todo |= INTRSTAT; 206 break; 207 case 'M': 208 memf = optarg; 209 break; 210 case 'm': 211 todo |= MEMSTAT; 212 break; 213 case 'N': 214 nlistf = optarg; 215 break; 216 case 'n': 217 nflag = 1; 218 maxshowdevs = atoi(optarg); 219 if (maxshowdevs < 0) 220 errx(1, "number of devices %d is < 0", 221 maxshowdevs); 222 break; 223 case 'p': 224 if (devstat_buildmatch(optarg, &matches, &num_matches) != 0) 225 errx(1, "%s", devstat_errbuf); 226 break; 227 case 's': 228 todo |= SUMSTAT; 229 break; 230 case 't': 231 #ifdef notyet 232 todo |= TIMESTAT; 233 #else 234 errx(EX_USAGE, "sorry, -t is not (re)implemented yet"); 235 #endif 236 break; 237 case 'w': 238 /* Convert to milliseconds. */ 239 f = atof(optarg); 240 interval = f * 1000; 241 break; 242 case 'z': 243 todo |= ZMEMSTAT; 244 break; 245 case '?': 246 default: 247 usage(); 248 } 249 } 250 argc -= optind; 251 argv += optind; 252 253 if (todo == 0) 254 todo = VMSTAT; 255 256 if (memf != NULL) { 257 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 258 if (kd == NULL) 259 errx(1, "kvm_openfiles: %s", errbuf); 260 } 261 262 retry_nlist: 263 if (kd != NULL && (c = kvm_nlist(kd, namelist)) != 0) { 264 if (c > 0) { 265 /* 266 * 'cnt' was renamed to 'vm_cnt'. If 'vm_cnt' is not 267 * found try looking up older 'cnt' symbol. 268 * */ 269 if (namelist[X_SUM].n_type == 0 && 270 strcmp(namelist[X_SUM].n_name, "_vm_cnt") == 0) { 271 namelist[X_SUM].n_name = "_cnt"; 272 goto retry_nlist; 273 } 274 warnx("undefined symbols:"); 275 for (c = 0; 276 c < (int)(sizeof(namelist)/sizeof(namelist[0])); 277 c++) 278 if (namelist[c].n_type == 0) 279 (void)fprintf(stderr, " %s", 280 namelist[c].n_name); 281 (void)fputc('\n', stderr); 282 } else 283 warnx("kvm_nlist: %s", kvm_geterr(kd)); 284 exit(1); 285 } 286 if (kd && Pflag) 287 errx(1, "Cannot use -P with crash dumps"); 288 289 if (todo & VMSTAT) { 290 /* 291 * Make sure that the userland devstat version matches the 292 * kernel devstat version. If not, exit and print a 293 * message informing the user of his mistake. 294 */ 295 if (devstat_checkversion(NULL) < 0) 296 errx(1, "%s", devstat_errbuf); 297 298 299 argv = getdrivedata(argv); 300 } 301 302 if (*argv) { 303 f = atof(*argv); 304 interval = f * 1000; 305 if (*++argv) 306 reps = atoi(*argv); 307 } 308 309 if (interval) { 310 if (!reps) 311 reps = -1; 312 } else if (reps) 313 interval = 1 * 1000; 314 315 if (todo & FORKSTAT) 316 doforkst(); 317 if (todo & MEMSTAT) 318 domemstat_malloc(); 319 if (todo & ZMEMSTAT) 320 domemstat_zone(); 321 if (todo & SUMSTAT) 322 dosum(); 323 #ifdef notyet 324 if (todo & TIMESTAT) 325 dotimes(); 326 #endif 327 if (todo & INTRSTAT) 328 dointr(); 329 if (todo & VMSTAT) 330 dovmstat(interval, reps); 331 exit(0); 332 } 333 334 static int 335 mysysctl(const char *name, void *oldp, size_t *oldlenp, 336 void *newp, size_t newlen) 337 { 338 int error; 339 340 error = sysctlbyname(name, oldp, oldlenp, newp, newlen); 341 if (error != 0 && errno != ENOMEM) 342 err(1, "sysctl(%s)", name); 343 return (error); 344 } 345 346 static char ** 347 getdrivedata(char **argv) 348 { 349 if ((num_devices = devstat_getnumdevs(NULL)) < 0) 350 errx(1, "%s", devstat_errbuf); 351 352 cur.dinfo = (struct devinfo *)calloc(1, sizeof(struct devinfo)); 353 last.dinfo = (struct devinfo *)calloc(1, sizeof(struct devinfo)); 354 355 if (devstat_getdevs(NULL, &cur) == -1) 356 errx(1, "%s", devstat_errbuf); 357 358 num_devices = cur.dinfo->numdevs; 359 generation = cur.dinfo->generation; 360 361 specified_devices = (char **)malloc(sizeof(char *)); 362 for (num_devices_specified = 0; *argv; ++argv) { 363 if (isdigit(**argv)) 364 break; 365 num_devices_specified++; 366 specified_devices = (char **)realloc(specified_devices, 367 sizeof(char *) * 368 num_devices_specified); 369 specified_devices[num_devices_specified - 1] = *argv; 370 } 371 dev_select = NULL; 372 373 if (nflag == 0 && maxshowdevs < num_devices_specified) 374 maxshowdevs = num_devices_specified; 375 376 /* 377 * People are generally only interested in disk statistics when 378 * they're running vmstat. So, that's what we're going to give 379 * them if they don't specify anything by default. We'll also give 380 * them any other random devices in the system so that we get to 381 * maxshowdevs devices, if that many devices exist. If the user 382 * specifies devices on the command line, either through a pattern 383 * match or by naming them explicitly, we will give the user only 384 * those devices. 385 */ 386 if ((num_devices_specified == 0) && (num_matches == 0)) { 387 if (devstat_buildmatch(da, &matches, &num_matches) != 0) 388 errx(1, "%s", devstat_errbuf); 389 390 select_mode = DS_SELECT_ADD; 391 } else 392 select_mode = DS_SELECT_ONLY; 393 394 /* 395 * At this point, selectdevs will almost surely indicate that the 396 * device list has changed, so we don't look for return values of 0 397 * or 1. If we get back -1, though, there is an error. 398 */ 399 if (devstat_selectdevs(&dev_select, &num_selected, &num_selections, 400 &select_generation, generation, cur.dinfo->devices, 401 num_devices, matches, num_matches, specified_devices, 402 num_devices_specified, select_mode, 403 maxshowdevs, 0) == -1) 404 errx(1, "%s", devstat_errbuf); 405 406 return(argv); 407 } 408 409 static long 410 getuptime(void) 411 { 412 struct timespec sp; 413 414 (void)clock_gettime(CLOCK_MONOTONIC, &sp); 415 416 return(sp.tv_sec); 417 } 418 419 static void 420 fill_pcpu(struct pcpu ***pcpup, int* maxcpup) 421 { 422 struct pcpu **pcpu; 423 424 int maxcpu, i; 425 426 *pcpup = NULL; 427 428 if (kd == NULL) 429 return; 430 431 maxcpu = kvm_getmaxcpu(kd); 432 if (maxcpu < 0) 433 errx(1, "kvm_getmaxcpu: %s", kvm_geterr(kd)); 434 435 pcpu = calloc(maxcpu, sizeof(struct pcpu *)); 436 if (pcpu == NULL) 437 err(1, "calloc"); 438 439 for (i = 0; i < maxcpu; i++) { 440 pcpu[i] = kvm_getpcpu(kd, i); 441 if (pcpu[i] == (struct pcpu *)-1) 442 errx(1, "kvm_getpcpu: %s", kvm_geterr(kd)); 443 } 444 445 *maxcpup = maxcpu; 446 *pcpup = pcpu; 447 } 448 449 static void 450 free_pcpu(struct pcpu **pcpu, int maxcpu) 451 { 452 int i; 453 454 for (i = 0; i < maxcpu; i++) 455 free(pcpu[i]); 456 free(pcpu); 457 } 458 459 static void 460 fill_vmmeter(struct vmmeter *vmmp) 461 { 462 struct pcpu **pcpu; 463 int maxcpu, i; 464 465 if (kd != NULL) { 466 kread(X_SUM, vmmp, sizeof(*vmmp)); 467 fill_pcpu(&pcpu, &maxcpu); 468 for (i = 0; i < maxcpu; i++) { 469 if (pcpu[i] == NULL) 470 continue; 471 #define ADD_FROM_PCPU(i, name) \ 472 vmmp->name += pcpu[i]->pc_cnt.name 473 ADD_FROM_PCPU(i, v_swtch); 474 ADD_FROM_PCPU(i, v_trap); 475 ADD_FROM_PCPU(i, v_syscall); 476 ADD_FROM_PCPU(i, v_intr); 477 ADD_FROM_PCPU(i, v_soft); 478 ADD_FROM_PCPU(i, v_vm_faults); 479 ADD_FROM_PCPU(i, v_io_faults); 480 ADD_FROM_PCPU(i, v_cow_faults); 481 ADD_FROM_PCPU(i, v_cow_optim); 482 ADD_FROM_PCPU(i, v_zfod); 483 ADD_FROM_PCPU(i, v_ozfod); 484 ADD_FROM_PCPU(i, v_swapin); 485 ADD_FROM_PCPU(i, v_swapout); 486 ADD_FROM_PCPU(i, v_swappgsin); 487 ADD_FROM_PCPU(i, v_swappgsout); 488 ADD_FROM_PCPU(i, v_vnodein); 489 ADD_FROM_PCPU(i, v_vnodeout); 490 ADD_FROM_PCPU(i, v_vnodepgsin); 491 ADD_FROM_PCPU(i, v_vnodepgsout); 492 ADD_FROM_PCPU(i, v_intrans); 493 ADD_FROM_PCPU(i, v_tfree); 494 ADD_FROM_PCPU(i, v_forks); 495 ADD_FROM_PCPU(i, v_vforks); 496 ADD_FROM_PCPU(i, v_rforks); 497 ADD_FROM_PCPU(i, v_kthreads); 498 ADD_FROM_PCPU(i, v_forkpages); 499 ADD_FROM_PCPU(i, v_vforkpages); 500 ADD_FROM_PCPU(i, v_rforkpages); 501 ADD_FROM_PCPU(i, v_kthreadpages); 502 #undef ADD_FROM_PCPU 503 } 504 free_pcpu(pcpu, maxcpu); 505 } else { 506 size_t size = sizeof(unsigned int); 507 #define GET_VM_STATS(cat, name) \ 508 mysysctl("vm.stats." #cat "." #name, &vmmp->name, &size, NULL, 0) 509 /* sys */ 510 GET_VM_STATS(sys, v_swtch); 511 GET_VM_STATS(sys, v_trap); 512 GET_VM_STATS(sys, v_syscall); 513 GET_VM_STATS(sys, v_intr); 514 GET_VM_STATS(sys, v_soft); 515 516 /* vm */ 517 GET_VM_STATS(vm, v_vm_faults); 518 GET_VM_STATS(vm, v_io_faults); 519 GET_VM_STATS(vm, v_cow_faults); 520 GET_VM_STATS(vm, v_cow_optim); 521 GET_VM_STATS(vm, v_zfod); 522 GET_VM_STATS(vm, v_ozfod); 523 GET_VM_STATS(vm, v_swapin); 524 GET_VM_STATS(vm, v_swapout); 525 GET_VM_STATS(vm, v_swappgsin); 526 GET_VM_STATS(vm, v_swappgsout); 527 GET_VM_STATS(vm, v_vnodein); 528 GET_VM_STATS(vm, v_vnodeout); 529 GET_VM_STATS(vm, v_vnodepgsin); 530 GET_VM_STATS(vm, v_vnodepgsout); 531 GET_VM_STATS(vm, v_intrans); 532 GET_VM_STATS(vm, v_reactivated); 533 GET_VM_STATS(vm, v_pdwakeups); 534 GET_VM_STATS(vm, v_pdpages); 535 GET_VM_STATS(vm, v_tcached); 536 GET_VM_STATS(vm, v_dfree); 537 GET_VM_STATS(vm, v_pfree); 538 GET_VM_STATS(vm, v_tfree); 539 GET_VM_STATS(vm, v_page_size); 540 GET_VM_STATS(vm, v_page_count); 541 GET_VM_STATS(vm, v_free_reserved); 542 GET_VM_STATS(vm, v_free_target); 543 GET_VM_STATS(vm, v_free_min); 544 GET_VM_STATS(vm, v_free_count); 545 GET_VM_STATS(vm, v_wire_count); 546 GET_VM_STATS(vm, v_active_count); 547 GET_VM_STATS(vm, v_inactive_target); 548 GET_VM_STATS(vm, v_inactive_count); 549 GET_VM_STATS(vm, v_cache_count); 550 GET_VM_STATS(vm, v_cache_min); 551 GET_VM_STATS(vm, v_cache_max); 552 GET_VM_STATS(vm, v_pageout_free_min); 553 GET_VM_STATS(vm, v_interrupt_free_min); 554 /*GET_VM_STATS(vm, v_free_severe);*/ 555 GET_VM_STATS(vm, v_forks); 556 GET_VM_STATS(vm, v_vforks); 557 GET_VM_STATS(vm, v_rforks); 558 GET_VM_STATS(vm, v_kthreads); 559 GET_VM_STATS(vm, v_forkpages); 560 GET_VM_STATS(vm, v_vforkpages); 561 GET_VM_STATS(vm, v_rforkpages); 562 GET_VM_STATS(vm, v_kthreadpages); 563 #undef GET_VM_STATS 564 } 565 } 566 567 static void 568 fill_vmtotal(struct vmtotal *vmtp) 569 { 570 if (kd != NULL) { 571 /* XXX fill vmtp */ 572 errx(1, "not implemented"); 573 } else { 574 size_t size = sizeof(*vmtp); 575 mysysctl("vm.vmtotal", vmtp, &size, NULL, 0); 576 if (size != sizeof(*vmtp)) 577 errx(1, "vm.total size mismatch"); 578 } 579 } 580 581 /* Determine how many cpu columns, and what index they are in kern.cp_times */ 582 static int 583 getcpuinfo(u_long *maskp, int *maxidp) 584 { 585 int maxcpu; 586 int maxid; 587 int ncpus; 588 int i, j; 589 int empty; 590 size_t size; 591 long *times; 592 u_long mask; 593 594 if (kd != NULL) 595 errx(1, "not implemented"); 596 mask = 0; 597 ncpus = 0; 598 size = sizeof(maxcpu); 599 mysysctl("kern.smp.maxcpus", &maxcpu, &size, NULL, 0); 600 if (size != sizeof(maxcpu)) 601 errx(1, "sysctl kern.smp.maxcpus"); 602 size = sizeof(long) * maxcpu * CPUSTATES; 603 times = malloc(size); 604 if (times == NULL) 605 err(1, "malloc %zd bytes", size); 606 mysysctl("kern.cp_times", times, &size, NULL, 0); 607 maxid = (size / CPUSTATES / sizeof(long)) - 1; 608 for (i = 0; i <= maxid; i++) { 609 empty = 1; 610 for (j = 0; empty && j < CPUSTATES; j++) { 611 if (times[i * CPUSTATES + j] != 0) 612 empty = 0; 613 } 614 if (!empty) { 615 mask |= (1ul << i); 616 ncpus++; 617 } 618 } 619 if (maskp) 620 *maskp = mask; 621 if (maxidp) 622 *maxidp = maxid; 623 return (ncpus); 624 } 625 626 627 static void 628 prthuman(u_int64_t val, int size) 629 { 630 char buf[10]; 631 int flags; 632 633 if (size < 5 || size > 9) 634 errx(1, "doofus"); 635 flags = HN_B | HN_NOSPACE | HN_DECIMAL; 636 humanize_number(buf, size, val, "", HN_AUTOSCALE, flags); 637 printf("%*s", size, buf); 638 } 639 640 static int hz, hdrcnt; 641 642 static long *cur_cp_times; 643 static long *last_cp_times; 644 static size_t size_cp_times; 645 646 static void 647 dovmstat(unsigned int interval, int reps) 648 { 649 struct vmtotal total; 650 time_t uptime, halfuptime; 651 struct devinfo *tmp_dinfo; 652 size_t size; 653 int ncpus, maxid; 654 u_long cpumask; 655 int rate_adj; 656 657 uptime = getuptime(); 658 halfuptime = uptime / 2; 659 rate_adj = 1; 660 ncpus = 1; 661 maxid = 0; 662 663 /* 664 * If the user stops the program (control-Z) and then resumes it, 665 * print out the header again. 666 */ 667 (void)signal(SIGCONT, needhdr); 668 669 /* 670 * If our standard output is a tty, then install a SIGWINCH handler 671 * and set wresized so that our first iteration through the main 672 * vmstat loop will peek at the terminal's current rows to find out 673 * how many lines can fit in a screenful of output. 674 */ 675 if (isatty(fileno(stdout)) != 0) { 676 wresized = 1; 677 (void)signal(SIGWINCH, needresize); 678 } else { 679 wresized = 0; 680 winlines = VMSTAT_DEFAULT_LINES; 681 } 682 683 if (kd != NULL) { 684 if (namelist[X_STATHZ].n_type != 0 && 685 namelist[X_STATHZ].n_value != 0) 686 kread(X_STATHZ, &hz, sizeof(hz)); 687 if (!hz) 688 kread(X_HZ, &hz, sizeof(hz)); 689 } else { 690 struct clockinfo clockrate; 691 692 size = sizeof(clockrate); 693 mysysctl("kern.clockrate", &clockrate, &size, NULL, 0); 694 if (size != sizeof(clockrate)) 695 errx(1, "clockrate size mismatch"); 696 hz = clockrate.hz; 697 } 698 699 if (Pflag) { 700 ncpus = getcpuinfo(&cpumask, &maxid); 701 size_cp_times = sizeof(long) * (maxid + 1) * CPUSTATES; 702 cur_cp_times = calloc(1, size_cp_times); 703 last_cp_times = calloc(1, size_cp_times); 704 } 705 for (hdrcnt = 1;;) { 706 if (!--hdrcnt) 707 printhdr(maxid, cpumask); 708 if (kd != NULL) { 709 if (kvm_getcptime(kd, cur.cp_time) < 0) 710 errx(1, "kvm_getcptime: %s", kvm_geterr(kd)); 711 } else { 712 size = sizeof(cur.cp_time); 713 mysysctl("kern.cp_time", &cur.cp_time, &size, NULL, 0); 714 if (size != sizeof(cur.cp_time)) 715 errx(1, "cp_time size mismatch"); 716 } 717 if (Pflag) { 718 size = size_cp_times; 719 mysysctl("kern.cp_times", cur_cp_times, &size, NULL, 0); 720 if (size != size_cp_times) 721 errx(1, "cp_times mismatch"); 722 } 723 724 tmp_dinfo = last.dinfo; 725 last.dinfo = cur.dinfo; 726 cur.dinfo = tmp_dinfo; 727 last.snap_time = cur.snap_time; 728 729 /* 730 * Here what we want to do is refresh our device stats. 731 * getdevs() returns 1 when the device list has changed. 732 * If the device list has changed, we want to go through 733 * the selection process again, in case a device that we 734 * were previously displaying has gone away. 735 */ 736 switch (devstat_getdevs(NULL, &cur)) { 737 case -1: 738 errx(1, "%s", devstat_errbuf); 739 break; 740 case 1: { 741 int retval; 742 743 num_devices = cur.dinfo->numdevs; 744 generation = cur.dinfo->generation; 745 746 retval = devstat_selectdevs(&dev_select, &num_selected, 747 &num_selections, &select_generation, 748 generation, cur.dinfo->devices, 749 num_devices, matches, num_matches, 750 specified_devices, 751 num_devices_specified, select_mode, 752 maxshowdevs, 0); 753 switch (retval) { 754 case -1: 755 errx(1, "%s", devstat_errbuf); 756 break; 757 case 1: 758 printhdr(maxid, cpumask); 759 break; 760 default: 761 break; 762 } 763 } 764 default: 765 break; 766 } 767 768 fill_vmmeter(&sum); 769 fill_vmtotal(&total); 770 (void)printf("%2d %1d %1d", 771 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw); 772 #define vmstat_pgtok(a) ((a) * (sum.v_page_size >> 10)) 773 #define rate(x) (((x) * rate_adj + halfuptime) / uptime) /* round */ 774 if (hflag) { 775 printf(" "); 776 prthuman(total.t_avm * (u_int64_t)sum.v_page_size, 7); 777 printf(" "); 778 prthuman(total.t_free * (u_int64_t)sum.v_page_size, 6); 779 printf(" "); 780 } else { 781 printf(" %7d ", vmstat_pgtok(total.t_avm)); 782 printf(" %6d ", vmstat_pgtok(total.t_free)); 783 } 784 (void)printf("%5lu ", 785 (unsigned long)rate(sum.v_vm_faults - osum.v_vm_faults)); 786 (void)printf("%3lu ", 787 (unsigned long)rate(sum.v_reactivated - osum.v_reactivated)); 788 (void)printf("%3lu ", 789 (unsigned long)rate(sum.v_swapin + sum.v_vnodein - 790 (osum.v_swapin + osum.v_vnodein))); 791 (void)printf("%3lu ", 792 (unsigned long)rate(sum.v_swapout + sum.v_vnodeout - 793 (osum.v_swapout + osum.v_vnodeout))); 794 (void)printf("%5lu ", 795 (unsigned long)rate(sum.v_tfree - osum.v_tfree)); 796 (void)printf("%3lu ", 797 (unsigned long)rate(sum.v_pdpages - osum.v_pdpages)); 798 devstats(); 799 (void)printf("%4lu %4lu %4lu", 800 (unsigned long)rate(sum.v_intr - osum.v_intr), 801 (unsigned long)rate(sum.v_syscall - osum.v_syscall), 802 (unsigned long)rate(sum.v_swtch - osum.v_swtch)); 803 if (Pflag) 804 pcpustats(ncpus, cpumask, maxid); 805 else 806 cpustats(); 807 (void)printf("\n"); 808 (void)fflush(stdout); 809 if (reps >= 0 && --reps <= 0) 810 break; 811 osum = sum; 812 uptime = interval; 813 rate_adj = 1000; 814 /* 815 * We round upward to avoid losing low-frequency events 816 * (i.e., >= 1 per interval but < 1 per millisecond). 817 */ 818 if (interval != 1) 819 halfuptime = (uptime + 1) / 2; 820 else 821 halfuptime = 0; 822 (void)usleep(interval * 1000); 823 } 824 } 825 826 static void 827 printhdr(int maxid, u_long cpumask) 828 { 829 int i, num_shown; 830 831 num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs; 832 (void)printf(" procs memory page%*s", 19, ""); 833 if (num_shown > 1) 834 (void)printf(" disks %*s", num_shown * 4 - 7, ""); 835 else if (num_shown == 1) 836 (void)printf("disk"); 837 (void)printf(" faults "); 838 if (Pflag) { 839 for (i = 0; i <= maxid; i++) { 840 if (cpumask & (1ul << i)) 841 printf("cpu%-2d ", i); 842 } 843 printf("\n"); 844 } else 845 printf("cpu\n"); 846 (void)printf(" r b w avm fre flt re pi po fr sr "); 847 for (i = 0; i < num_devices; i++) 848 if ((dev_select[i].selected) 849 && (dev_select[i].selected <= maxshowdevs)) 850 (void)printf("%c%c%d ", dev_select[i].device_name[0], 851 dev_select[i].device_name[1], 852 dev_select[i].unit_number); 853 (void)printf(" in sy cs"); 854 if (Pflag) { 855 for (i = 0; i <= maxid; i++) { 856 if (cpumask & (1ul << i)) 857 printf(" us sy id"); 858 } 859 printf("\n"); 860 } else 861 printf(" us sy id\n"); 862 if (wresized != 0) 863 doresize(); 864 hdrcnt = winlines; 865 } 866 867 /* 868 * Force a header to be prepended to the next output. 869 */ 870 static void 871 needhdr(int dummy __unused) 872 { 873 874 hdrcnt = 1; 875 } 876 877 /* 878 * When the terminal is resized, force an update of the maximum number of rows 879 * printed between each header repetition. Then force a new header to be 880 * prepended to the next output. 881 */ 882 void 883 needresize(int signo) 884 { 885 886 wresized = 1; 887 hdrcnt = 1; 888 } 889 890 /* 891 * Update the global `winlines' count of terminal rows. 892 */ 893 void 894 doresize(void) 895 { 896 int status; 897 struct winsize w; 898 899 for (;;) { 900 status = ioctl(fileno(stdout), TIOCGWINSZ, &w); 901 if (status == -1 && errno == EINTR) 902 continue; 903 else if (status == -1) 904 err(1, "ioctl"); 905 if (w.ws_row > 3) 906 winlines = w.ws_row - 3; 907 else 908 winlines = VMSTAT_DEFAULT_LINES; 909 break; 910 } 911 912 /* 913 * Inhibit doresize() calls until we are rescheduled by SIGWINCH. 914 */ 915 wresized = 0; 916 } 917 918 #ifdef notyet 919 static void 920 dotimes(void) 921 { 922 unsigned int pgintime, rectime; 923 924 kread(X_REC, &rectime, sizeof(rectime)); 925 kread(X_PGIN, &pgintime, sizeof(pgintime)); 926 kread(X_SUM, &sum, sizeof(sum)); 927 (void)printf("%u reclaims, %u total time (usec)\n", 928 sum.v_pgrec, rectime); 929 (void)printf("average: %u usec / reclaim\n", rectime / sum.v_pgrec); 930 (void)printf("\n"); 931 (void)printf("%u page ins, %u total time (msec)\n", 932 sum.v_pgin, pgintime / 10); 933 (void)printf("average: %8.1f msec / page in\n", 934 pgintime / (sum.v_pgin * 10.0)); 935 } 936 #endif 937 938 static long 939 pct(long top, long bot) 940 { 941 long ans; 942 943 if (bot == 0) 944 return(0); 945 ans = (quad_t)top * 100 / bot; 946 return (ans); 947 } 948 949 #define PCT(top, bot) pct((long)(top), (long)(bot)) 950 951 static void 952 dosum(void) 953 { 954 struct nchstats lnchstats; 955 long nchtotal; 956 957 fill_vmmeter(&sum); 958 (void)printf("%9u cpu context switches\n", sum.v_swtch); 959 (void)printf("%9u device interrupts\n", sum.v_intr); 960 (void)printf("%9u software interrupts\n", sum.v_soft); 961 (void)printf("%9u traps\n", sum.v_trap); 962 (void)printf("%9u system calls\n", sum.v_syscall); 963 (void)printf("%9u kernel threads created\n", sum.v_kthreads); 964 (void)printf("%9u fork() calls\n", sum.v_forks); 965 (void)printf("%9u vfork() calls\n", sum.v_vforks); 966 (void)printf("%9u rfork() calls\n", sum.v_rforks); 967 (void)printf("%9u swap pager pageins\n", sum.v_swapin); 968 (void)printf("%9u swap pager pages paged in\n", sum.v_swappgsin); 969 (void)printf("%9u swap pager pageouts\n", sum.v_swapout); 970 (void)printf("%9u swap pager pages paged out\n", sum.v_swappgsout); 971 (void)printf("%9u vnode pager pageins\n", sum.v_vnodein); 972 (void)printf("%9u vnode pager pages paged in\n", sum.v_vnodepgsin); 973 (void)printf("%9u vnode pager pageouts\n", sum.v_vnodeout); 974 (void)printf("%9u vnode pager pages paged out\n", sum.v_vnodepgsout); 975 (void)printf("%9u page daemon wakeups\n", sum.v_pdwakeups); 976 (void)printf("%9u pages examined by the page daemon\n", sum.v_pdpages); 977 (void)printf("%9u pages reactivated\n", sum.v_reactivated); 978 (void)printf("%9u copy-on-write faults\n", sum.v_cow_faults); 979 (void)printf("%9u copy-on-write optimized faults\n", sum.v_cow_optim); 980 (void)printf("%9u zero fill pages zeroed\n", sum.v_zfod); 981 (void)printf("%9u zero fill pages prezeroed\n", sum.v_ozfod); 982 (void)printf("%9u intransit blocking page faults\n", sum.v_intrans); 983 (void)printf("%9u total VM faults taken\n", sum.v_vm_faults); 984 (void)printf("%9u page faults requiring I/O\n", sum.v_io_faults); 985 (void)printf("%9u pages affected by kernel thread creation\n", sum.v_kthreadpages); 986 (void)printf("%9u pages affected by fork()\n", sum.v_forkpages); 987 (void)printf("%9u pages affected by vfork()\n", sum.v_vforkpages); 988 (void)printf("%9u pages affected by rfork()\n", sum.v_rforkpages); 989 (void)printf("%9u pages cached\n", sum.v_tcached); 990 (void)printf("%9u pages freed\n", sum.v_tfree); 991 (void)printf("%9u pages freed by daemon\n", sum.v_dfree); 992 (void)printf("%9u pages freed by exiting processes\n", sum.v_pfree); 993 (void)printf("%9u pages active\n", sum.v_active_count); 994 (void)printf("%9u pages inactive\n", sum.v_inactive_count); 995 (void)printf("%9u pages in VM cache\n", sum.v_cache_count); 996 (void)printf("%9u pages wired down\n", sum.v_wire_count); 997 (void)printf("%9u pages free\n", sum.v_free_count); 998 (void)printf("%9u bytes per page\n", sum.v_page_size); 999 if (kd != NULL) { 1000 kread(X_NCHSTATS, &lnchstats, sizeof(lnchstats)); 1001 } else { 1002 size_t size = sizeof(lnchstats); 1003 mysysctl("vfs.cache.nchstats", &lnchstats, &size, NULL, 0); 1004 if (size != sizeof(lnchstats)) 1005 errx(1, "vfs.cache.nchstats size mismatch"); 1006 } 1007 nchtotal = lnchstats.ncs_goodhits + lnchstats.ncs_neghits + 1008 lnchstats.ncs_badhits + lnchstats.ncs_falsehits + 1009 lnchstats.ncs_miss + lnchstats.ncs_long; 1010 (void)printf("%9ld total name lookups\n", nchtotal); 1011 (void)printf( 1012 "%9s cache hits (%ld%% pos + %ld%% neg) system %ld%% per-directory\n", 1013 "", PCT(lnchstats.ncs_goodhits, nchtotal), 1014 PCT(lnchstats.ncs_neghits, nchtotal), 1015 PCT(lnchstats.ncs_pass2, nchtotal)); 1016 (void)printf("%9s deletions %ld%%, falsehits %ld%%, toolong %ld%%\n", "", 1017 PCT(lnchstats.ncs_badhits, nchtotal), 1018 PCT(lnchstats.ncs_falsehits, nchtotal), 1019 PCT(lnchstats.ncs_long, nchtotal)); 1020 } 1021 1022 static void 1023 doforkst(void) 1024 { 1025 fill_vmmeter(&sum); 1026 (void)printf("%u forks, %u pages, average %.2f\n", 1027 sum.v_forks, sum.v_forkpages, 1028 sum.v_forks == 0 ? 0.0 : 1029 (double)sum.v_forkpages / sum.v_forks); 1030 (void)printf("%u vforks, %u pages, average %.2f\n", 1031 sum.v_vforks, sum.v_vforkpages, 1032 sum.v_vforks == 0 ? 0.0 : 1033 (double)sum.v_vforkpages / sum.v_vforks); 1034 (void)printf("%u rforks, %u pages, average %.2f\n", 1035 sum.v_rforks, sum.v_rforkpages, 1036 sum.v_rforks == 0 ? 0.0 : 1037 (double)sum.v_rforkpages / sum.v_rforks); 1038 } 1039 1040 static void 1041 devstats(void) 1042 { 1043 int dn, state; 1044 long double transfers_per_second; 1045 long double busy_seconds; 1046 long tmp; 1047 1048 for (state = 0; state < CPUSTATES; ++state) { 1049 tmp = cur.cp_time[state]; 1050 cur.cp_time[state] -= last.cp_time[state]; 1051 last.cp_time[state] = tmp; 1052 } 1053 1054 busy_seconds = cur.snap_time - last.snap_time; 1055 1056 for (dn = 0; dn < num_devices; dn++) { 1057 int di; 1058 1059 if ((dev_select[dn].selected == 0) 1060 || (dev_select[dn].selected > maxshowdevs)) 1061 continue; 1062 1063 di = dev_select[dn].position; 1064 1065 if (devstat_compute_statistics(&cur.dinfo->devices[di], 1066 &last.dinfo->devices[di], busy_seconds, 1067 DSM_TRANSFERS_PER_SECOND, &transfers_per_second, 1068 DSM_NONE) != 0) 1069 errx(1, "%s", devstat_errbuf); 1070 1071 (void)printf("%3.0Lf ", transfers_per_second); 1072 } 1073 } 1074 1075 static void 1076 percent(double pct, int *over) 1077 { 1078 char buf[10]; 1079 int l; 1080 1081 l = snprintf(buf, sizeof(buf), "%.0f", pct); 1082 if (l == 1 && *over) { 1083 printf("%s", buf); 1084 (*over)--; 1085 } else 1086 printf("%2s", buf); 1087 if (l > 2) 1088 (*over)++; 1089 } 1090 1091 static void 1092 cpustats(void) 1093 { 1094 int state, over; 1095 double lpct, total; 1096 1097 total = 0; 1098 for (state = 0; state < CPUSTATES; ++state) 1099 total += cur.cp_time[state]; 1100 if (total) 1101 lpct = 100.0 / total; 1102 else 1103 lpct = 0.0; 1104 over = 0; 1105 printf(" "); 1106 percent((cur.cp_time[CP_USER] + cur.cp_time[CP_NICE]) * lpct, &over); 1107 printf(" "); 1108 percent((cur.cp_time[CP_SYS] + cur.cp_time[CP_INTR]) * lpct, &over); 1109 printf(" "); 1110 percent(cur.cp_time[CP_IDLE] * lpct, &over); 1111 } 1112 1113 static void 1114 pcpustats(int ncpus, u_long cpumask, int maxid) 1115 { 1116 int state, i; 1117 double lpct, total; 1118 long tmp; 1119 int over; 1120 1121 /* devstats does this for cp_time */ 1122 for (i = 0; i <= maxid; i++) { 1123 if ((cpumask & (1ul << i)) == 0) 1124 continue; 1125 for (state = 0; state < CPUSTATES; ++state) { 1126 tmp = cur_cp_times[i * CPUSTATES + state]; 1127 cur_cp_times[i * CPUSTATES + state] -= last_cp_times[i * CPUSTATES + state]; 1128 last_cp_times[i * CPUSTATES + state] = tmp; 1129 } 1130 } 1131 1132 over = 0; 1133 for (i = 0; i <= maxid; i++) { 1134 if ((cpumask & (1ul << i)) == 0) 1135 continue; 1136 total = 0; 1137 for (state = 0; state < CPUSTATES; ++state) 1138 total += cur_cp_times[i * CPUSTATES + state]; 1139 if (total) 1140 lpct = 100.0 / total; 1141 else 1142 lpct = 0.0; 1143 printf(" "); 1144 percent((cur_cp_times[i * CPUSTATES + CP_USER] + 1145 cur_cp_times[i * CPUSTATES + CP_NICE]) * lpct, &over); 1146 printf(" "); 1147 percent((cur_cp_times[i * CPUSTATES + CP_SYS] + 1148 cur_cp_times[i * CPUSTATES + CP_INTR]) * lpct, &over); 1149 printf(" "); 1150 percent(cur_cp_times[i * CPUSTATES + CP_IDLE] * lpct, &over); 1151 } 1152 } 1153 1154 static void 1155 dointr(void) 1156 { 1157 unsigned long *intrcnt, uptime; 1158 uint64_t inttotal; 1159 size_t clen, inamlen, intrcntlen, istrnamlen; 1160 unsigned int i, nintr; 1161 char *intrname, *tintrname; 1162 1163 uptime = getuptime(); 1164 if (kd != NULL) { 1165 kread(X_SINTRCNT, &intrcntlen, sizeof(intrcntlen)); 1166 kread(X_SINTRNAMES, &inamlen, sizeof(inamlen)); 1167 if ((intrcnt = malloc(intrcntlen)) == NULL || 1168 (intrname = malloc(inamlen)) == NULL) 1169 err(1, "malloc()"); 1170 kread(X_INTRCNT, intrcnt, intrcntlen); 1171 kread(X_INTRNAMES, intrname, inamlen); 1172 } else { 1173 for (intrcnt = NULL, intrcntlen = 1024; ; intrcntlen *= 2) { 1174 if ((intrcnt = reallocf(intrcnt, intrcntlen)) == NULL) 1175 err(1, "reallocf()"); 1176 if (mysysctl("hw.intrcnt", 1177 intrcnt, &intrcntlen, NULL, 0) == 0) 1178 break; 1179 } 1180 for (intrname = NULL, inamlen = 1024; ; inamlen *= 2) { 1181 if ((intrname = reallocf(intrname, inamlen)) == NULL) 1182 err(1, "reallocf()"); 1183 if (mysysctl("hw.intrnames", 1184 intrname, &inamlen, NULL, 0) == 0) 1185 break; 1186 } 1187 } 1188 nintr = intrcntlen / sizeof(unsigned long); 1189 tintrname = intrname; 1190 istrnamlen = strlen("interrupt"); 1191 for (i = 0; i < nintr; i++) { 1192 clen = strlen(tintrname); 1193 if (clen > istrnamlen) 1194 istrnamlen = clen; 1195 tintrname += clen + 1; 1196 } 1197 (void)printf("%-*s %20s %10s\n", (int)istrnamlen, "interrupt", "total", 1198 "rate"); 1199 inttotal = 0; 1200 for (i = 0; i < nintr; i++) { 1201 if (intrname[0] != '\0' && (*intrcnt != 0 || aflag)) 1202 (void)printf("%-*s %20lu %10lu\n", (int)istrnamlen, 1203 intrname, *intrcnt, *intrcnt / uptime); 1204 intrname += strlen(intrname) + 1; 1205 inttotal += *intrcnt++; 1206 } 1207 (void)printf("%-*s %20" PRIu64 " %10" PRIu64 "\n", (int)istrnamlen, 1208 "Total", inttotal, inttotal / uptime); 1209 } 1210 1211 static void 1212 domemstat_malloc(void) 1213 { 1214 struct memory_type_list *mtlp; 1215 struct memory_type *mtp; 1216 int error, first, i; 1217 1218 mtlp = memstat_mtl_alloc(); 1219 if (mtlp == NULL) { 1220 warn("memstat_mtl_alloc"); 1221 return; 1222 } 1223 if (kd == NULL) { 1224 if (memstat_sysctl_malloc(mtlp, 0) < 0) { 1225 warnx("memstat_sysctl_malloc: %s", 1226 memstat_strerror(memstat_mtl_geterror(mtlp))); 1227 return; 1228 } 1229 } else { 1230 if (memstat_kvm_malloc(mtlp, kd) < 0) { 1231 error = memstat_mtl_geterror(mtlp); 1232 if (error == MEMSTAT_ERROR_KVM) 1233 warnx("memstat_kvm_malloc: %s", 1234 kvm_geterr(kd)); 1235 else 1236 warnx("memstat_kvm_malloc: %s", 1237 memstat_strerror(error)); 1238 } 1239 } 1240 printf("%13s %5s %6s %7s %8s Size(s)\n", "Type", "InUse", "MemUse", 1241 "HighUse", "Requests"); 1242 for (mtp = memstat_mtl_first(mtlp); mtp != NULL; 1243 mtp = memstat_mtl_next(mtp)) { 1244 if (memstat_get_numallocs(mtp) == 0 && 1245 memstat_get_count(mtp) == 0) 1246 continue; 1247 printf("%13s %5" PRIu64 " %5" PRIu64 "K %7s %8" PRIu64 " ", 1248 memstat_get_name(mtp), memstat_get_count(mtp), 1249 (memstat_get_bytes(mtp) + 1023) / 1024, "-", 1250 memstat_get_numallocs(mtp)); 1251 first = 1; 1252 for (i = 0; i < 32; i++) { 1253 if (memstat_get_sizemask(mtp) & (1 << i)) { 1254 if (!first) 1255 printf(","); 1256 printf("%d", 1 << (i + 4)); 1257 first = 0; 1258 } 1259 } 1260 printf("\n"); 1261 } 1262 memstat_mtl_free(mtlp); 1263 } 1264 1265 static void 1266 domemstat_zone(void) 1267 { 1268 struct memory_type_list *mtlp; 1269 struct memory_type *mtp; 1270 char name[MEMTYPE_MAXNAME + 1]; 1271 int error; 1272 1273 mtlp = memstat_mtl_alloc(); 1274 if (mtlp == NULL) { 1275 warn("memstat_mtl_alloc"); 1276 return; 1277 } 1278 if (kd == NULL) { 1279 if (memstat_sysctl_uma(mtlp, 0) < 0) { 1280 warnx("memstat_sysctl_uma: %s", 1281 memstat_strerror(memstat_mtl_geterror(mtlp))); 1282 return; 1283 } 1284 } else { 1285 if (memstat_kvm_uma(mtlp, kd) < 0) { 1286 error = memstat_mtl_geterror(mtlp); 1287 if (error == MEMSTAT_ERROR_KVM) 1288 warnx("memstat_kvm_uma: %s", 1289 kvm_geterr(kd)); 1290 else 1291 warnx("memstat_kvm_uma: %s", 1292 memstat_strerror(error)); 1293 } 1294 } 1295 printf("%-20s %6s %6s %8s %8s %8s %4s %4s\n\n", "ITEM", "SIZE", 1296 "LIMIT", "USED", "FREE", "REQ", "FAIL", "SLEEP"); 1297 for (mtp = memstat_mtl_first(mtlp); mtp != NULL; 1298 mtp = memstat_mtl_next(mtp)) { 1299 strlcpy(name, memstat_get_name(mtp), MEMTYPE_MAXNAME); 1300 strcat(name, ":"); 1301 printf("%-20s %6" PRIu64 ", %6" PRIu64 ",%8" PRIu64 ",%8" PRIu64 1302 ",%8" PRIu64 ",%4" PRIu64 ",%4" PRIu64 "\n", name, 1303 memstat_get_size(mtp), memstat_get_countlimit(mtp), 1304 memstat_get_count(mtp), memstat_get_free(mtp), 1305 memstat_get_numallocs(mtp), memstat_get_failures(mtp), 1306 memstat_get_sleeps(mtp)); 1307 } 1308 memstat_mtl_free(mtlp); 1309 printf("\n"); 1310 } 1311 1312 /* 1313 * kread reads something from the kernel, given its nlist index. 1314 */ 1315 static void 1316 kreado(int nlx, void *addr, size_t size, size_t offset) 1317 { 1318 const char *sym; 1319 1320 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) { 1321 sym = namelist[nlx].n_name; 1322 if (*sym == '_') 1323 ++sym; 1324 errx(1, "symbol %s not defined", sym); 1325 } 1326 if ((size_t)kvm_read(kd, namelist[nlx].n_value + offset, addr, 1327 size) != size) { 1328 sym = namelist[nlx].n_name; 1329 if (*sym == '_') 1330 ++sym; 1331 errx(1, "%s: %s", sym, kvm_geterr(kd)); 1332 } 1333 } 1334 1335 static void 1336 kread(int nlx, void *addr, size_t size) 1337 { 1338 kreado(nlx, addr, size, 0); 1339 } 1340 1341 static char * 1342 kgetstr(const char *strp) 1343 { 1344 int n = 0, size = 1; 1345 char *ret = NULL; 1346 1347 do { 1348 if (size == n + 1) { 1349 ret = realloc(ret, size); 1350 if (ret == NULL) 1351 err(1, "%s: realloc", __func__); 1352 size *= 2; 1353 } 1354 if (kvm_read(kd, (u_long)strp + n, &ret[n], 1) != 1) 1355 errx(1, "%s: %s", __func__, kvm_geterr(kd)); 1356 } while (ret[n++] != '\0'); 1357 return (ret); 1358 } 1359 1360 static void 1361 usage(void) 1362 { 1363 (void)fprintf(stderr, "%s%s", 1364 "usage: vmstat [-afHhimPsz] [-M core [-N system]] [-c count] [-n devs]\n", 1365 " [-p type,if,pass] [-w wait] [disks] [wait [count]]\n"); 1366 exit(1); 1367 } 1368