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 #define BACKWARD_COMPATIBILITY 303 #ifdef BACKWARD_COMPATIBILITY 304 if (*argv) { 305 f = atof(*argv); 306 interval = f * 1000; 307 if (*++argv) 308 reps = atoi(*argv); 309 } 310 #endif 311 312 if (interval) { 313 if (!reps) 314 reps = -1; 315 } else if (reps) 316 interval = 1 * 1000; 317 318 if (todo & FORKSTAT) 319 doforkst(); 320 if (todo & MEMSTAT) 321 domemstat_malloc(); 322 if (todo & ZMEMSTAT) 323 domemstat_zone(); 324 if (todo & SUMSTAT) 325 dosum(); 326 #ifdef notyet 327 if (todo & TIMESTAT) 328 dotimes(); 329 #endif 330 if (todo & INTRSTAT) 331 dointr(); 332 if (todo & VMSTAT) 333 dovmstat(interval, reps); 334 exit(0); 335 } 336 337 static int 338 mysysctl(const char *name, void *oldp, size_t *oldlenp, 339 void *newp, size_t newlen) 340 { 341 int error; 342 343 error = sysctlbyname(name, oldp, oldlenp, newp, newlen); 344 if (error != 0 && errno != ENOMEM) 345 err(1, "sysctl(%s)", name); 346 return (error); 347 } 348 349 static char ** 350 getdrivedata(char **argv) 351 { 352 if ((num_devices = devstat_getnumdevs(NULL)) < 0) 353 errx(1, "%s", devstat_errbuf); 354 355 cur.dinfo = (struct devinfo *)calloc(1, sizeof(struct devinfo)); 356 last.dinfo = (struct devinfo *)calloc(1, sizeof(struct devinfo)); 357 358 if (devstat_getdevs(NULL, &cur) == -1) 359 errx(1, "%s", devstat_errbuf); 360 361 num_devices = cur.dinfo->numdevs; 362 generation = cur.dinfo->generation; 363 364 specified_devices = (char **)malloc(sizeof(char *)); 365 for (num_devices_specified = 0; *argv; ++argv) { 366 if (isdigit(**argv)) 367 break; 368 num_devices_specified++; 369 specified_devices = (char **)realloc(specified_devices, 370 sizeof(char *) * 371 num_devices_specified); 372 specified_devices[num_devices_specified - 1] = *argv; 373 } 374 dev_select = NULL; 375 376 if (nflag == 0 && maxshowdevs < num_devices_specified) 377 maxshowdevs = num_devices_specified; 378 379 /* 380 * People are generally only interested in disk statistics when 381 * they're running vmstat. So, that's what we're going to give 382 * them if they don't specify anything by default. We'll also give 383 * them any other random devices in the system so that we get to 384 * maxshowdevs devices, if that many devices exist. If the user 385 * specifies devices on the command line, either through a pattern 386 * match or by naming them explicitly, we will give the user only 387 * those devices. 388 */ 389 if ((num_devices_specified == 0) && (num_matches == 0)) { 390 if (devstat_buildmatch(da, &matches, &num_matches) != 0) 391 errx(1, "%s", devstat_errbuf); 392 393 select_mode = DS_SELECT_ADD; 394 } else 395 select_mode = DS_SELECT_ONLY; 396 397 /* 398 * At this point, selectdevs will almost surely indicate that the 399 * device list has changed, so we don't look for return values of 0 400 * or 1. If we get back -1, though, there is an error. 401 */ 402 if (devstat_selectdevs(&dev_select, &num_selected, &num_selections, 403 &select_generation, generation, cur.dinfo->devices, 404 num_devices, matches, num_matches, specified_devices, 405 num_devices_specified, select_mode, 406 maxshowdevs, 0) == -1) 407 errx(1, "%s", devstat_errbuf); 408 409 return(argv); 410 } 411 412 static long 413 getuptime(void) 414 { 415 struct timespec sp; 416 417 (void)clock_gettime(CLOCK_MONOTONIC, &sp); 418 419 return(sp.tv_sec); 420 } 421 422 static void 423 fill_pcpu(struct pcpu ***pcpup, int* maxcpup) 424 { 425 struct pcpu **pcpu; 426 427 int maxcpu, i; 428 429 *pcpup = NULL; 430 431 if (kd == NULL) 432 return; 433 434 maxcpu = kvm_getmaxcpu(kd); 435 if (maxcpu < 0) 436 errx(1, "kvm_getmaxcpu: %s", kvm_geterr(kd)); 437 438 pcpu = calloc(maxcpu, sizeof(struct pcpu *)); 439 if (pcpu == NULL) 440 err(1, "calloc"); 441 442 for (i = 0; i < maxcpu; i++) { 443 pcpu[i] = kvm_getpcpu(kd, i); 444 if (pcpu[i] == (struct pcpu *)-1) 445 errx(1, "kvm_getpcpu: %s", kvm_geterr(kd)); 446 } 447 448 *maxcpup = maxcpu; 449 *pcpup = pcpu; 450 } 451 452 static void 453 free_pcpu(struct pcpu **pcpu, int maxcpu) 454 { 455 int i; 456 457 for (i = 0; i < maxcpu; i++) 458 free(pcpu[i]); 459 free(pcpu); 460 } 461 462 static void 463 fill_vmmeter(struct vmmeter *vmmp) 464 { 465 struct pcpu **pcpu; 466 int maxcpu, i; 467 468 if (kd != NULL) { 469 kread(X_SUM, vmmp, sizeof(*vmmp)); 470 fill_pcpu(&pcpu, &maxcpu); 471 for (i = 0; i < maxcpu; i++) { 472 if (pcpu[i] == NULL) 473 continue; 474 #define ADD_FROM_PCPU(i, name) \ 475 vmmp->name += pcpu[i]->pc_cnt.name 476 ADD_FROM_PCPU(i, v_swtch); 477 ADD_FROM_PCPU(i, v_trap); 478 ADD_FROM_PCPU(i, v_syscall); 479 ADD_FROM_PCPU(i, v_intr); 480 ADD_FROM_PCPU(i, v_soft); 481 ADD_FROM_PCPU(i, v_vm_faults); 482 ADD_FROM_PCPU(i, v_io_faults); 483 ADD_FROM_PCPU(i, v_cow_faults); 484 ADD_FROM_PCPU(i, v_cow_optim); 485 ADD_FROM_PCPU(i, v_zfod); 486 ADD_FROM_PCPU(i, v_ozfod); 487 ADD_FROM_PCPU(i, v_swapin); 488 ADD_FROM_PCPU(i, v_swapout); 489 ADD_FROM_PCPU(i, v_swappgsin); 490 ADD_FROM_PCPU(i, v_swappgsout); 491 ADD_FROM_PCPU(i, v_vnodein); 492 ADD_FROM_PCPU(i, v_vnodeout); 493 ADD_FROM_PCPU(i, v_vnodepgsin); 494 ADD_FROM_PCPU(i, v_vnodepgsout); 495 ADD_FROM_PCPU(i, v_intrans); 496 ADD_FROM_PCPU(i, v_tfree); 497 ADD_FROM_PCPU(i, v_forks); 498 ADD_FROM_PCPU(i, v_vforks); 499 ADD_FROM_PCPU(i, v_rforks); 500 ADD_FROM_PCPU(i, v_kthreads); 501 ADD_FROM_PCPU(i, v_forkpages); 502 ADD_FROM_PCPU(i, v_vforkpages); 503 ADD_FROM_PCPU(i, v_rforkpages); 504 ADD_FROM_PCPU(i, v_kthreadpages); 505 #undef ADD_FROM_PCPU 506 } 507 free_pcpu(pcpu, maxcpu); 508 } else { 509 size_t size = sizeof(unsigned int); 510 #define GET_VM_STATS(cat, name) \ 511 mysysctl("vm.stats." #cat "." #name, &vmmp->name, &size, NULL, 0) 512 /* sys */ 513 GET_VM_STATS(sys, v_swtch); 514 GET_VM_STATS(sys, v_trap); 515 GET_VM_STATS(sys, v_syscall); 516 GET_VM_STATS(sys, v_intr); 517 GET_VM_STATS(sys, v_soft); 518 519 /* vm */ 520 GET_VM_STATS(vm, v_vm_faults); 521 GET_VM_STATS(vm, v_io_faults); 522 GET_VM_STATS(vm, v_cow_faults); 523 GET_VM_STATS(vm, v_cow_optim); 524 GET_VM_STATS(vm, v_zfod); 525 GET_VM_STATS(vm, v_ozfod); 526 GET_VM_STATS(vm, v_swapin); 527 GET_VM_STATS(vm, v_swapout); 528 GET_VM_STATS(vm, v_swappgsin); 529 GET_VM_STATS(vm, v_swappgsout); 530 GET_VM_STATS(vm, v_vnodein); 531 GET_VM_STATS(vm, v_vnodeout); 532 GET_VM_STATS(vm, v_vnodepgsin); 533 GET_VM_STATS(vm, v_vnodepgsout); 534 GET_VM_STATS(vm, v_intrans); 535 GET_VM_STATS(vm, v_reactivated); 536 GET_VM_STATS(vm, v_pdwakeups); 537 GET_VM_STATS(vm, v_pdpages); 538 GET_VM_STATS(vm, v_tcached); 539 GET_VM_STATS(vm, v_dfree); 540 GET_VM_STATS(vm, v_pfree); 541 GET_VM_STATS(vm, v_tfree); 542 GET_VM_STATS(vm, v_page_size); 543 GET_VM_STATS(vm, v_page_count); 544 GET_VM_STATS(vm, v_free_reserved); 545 GET_VM_STATS(vm, v_free_target); 546 GET_VM_STATS(vm, v_free_min); 547 GET_VM_STATS(vm, v_free_count); 548 GET_VM_STATS(vm, v_wire_count); 549 GET_VM_STATS(vm, v_active_count); 550 GET_VM_STATS(vm, v_inactive_target); 551 GET_VM_STATS(vm, v_inactive_count); 552 GET_VM_STATS(vm, v_cache_count); 553 GET_VM_STATS(vm, v_cache_min); 554 GET_VM_STATS(vm, v_cache_max); 555 GET_VM_STATS(vm, v_pageout_free_min); 556 GET_VM_STATS(vm, v_interrupt_free_min); 557 /*GET_VM_STATS(vm, v_free_severe);*/ 558 GET_VM_STATS(vm, v_forks); 559 GET_VM_STATS(vm, v_vforks); 560 GET_VM_STATS(vm, v_rforks); 561 GET_VM_STATS(vm, v_kthreads); 562 GET_VM_STATS(vm, v_forkpages); 563 GET_VM_STATS(vm, v_vforkpages); 564 GET_VM_STATS(vm, v_rforkpages); 565 GET_VM_STATS(vm, v_kthreadpages); 566 #undef GET_VM_STATS 567 } 568 } 569 570 static void 571 fill_vmtotal(struct vmtotal *vmtp) 572 { 573 if (kd != NULL) { 574 /* XXX fill vmtp */ 575 errx(1, "not implemented"); 576 } else { 577 size_t size = sizeof(*vmtp); 578 mysysctl("vm.vmtotal", vmtp, &size, NULL, 0); 579 if (size != sizeof(*vmtp)) 580 errx(1, "vm.total size mismatch"); 581 } 582 } 583 584 /* Determine how many cpu columns, and what index they are in kern.cp_times */ 585 static int 586 getcpuinfo(u_long *maskp, int *maxidp) 587 { 588 int maxcpu; 589 int maxid; 590 int ncpus; 591 int i, j; 592 int empty; 593 size_t size; 594 long *times; 595 u_long mask; 596 597 if (kd != NULL) 598 errx(1, "not implemented"); 599 mask = 0; 600 ncpus = 0; 601 size = sizeof(maxcpu); 602 mysysctl("kern.smp.maxcpus", &maxcpu, &size, NULL, 0); 603 if (size != sizeof(maxcpu)) 604 errx(1, "sysctl kern.smp.maxcpus"); 605 size = sizeof(long) * maxcpu * CPUSTATES; 606 times = malloc(size); 607 if (times == NULL) 608 err(1, "malloc %zd bytes", size); 609 mysysctl("kern.cp_times", times, &size, NULL, 0); 610 maxid = (size / CPUSTATES / sizeof(long)) - 1; 611 for (i = 0; i <= maxid; i++) { 612 empty = 1; 613 for (j = 0; empty && j < CPUSTATES; j++) { 614 if (times[i * CPUSTATES + j] != 0) 615 empty = 0; 616 } 617 if (!empty) { 618 mask |= (1ul << i); 619 ncpus++; 620 } 621 } 622 if (maskp) 623 *maskp = mask; 624 if (maxidp) 625 *maxidp = maxid; 626 return (ncpus); 627 } 628 629 630 static void 631 prthuman(u_int64_t val, int size) 632 { 633 char buf[10]; 634 int flags; 635 636 if (size < 5 || size > 9) 637 errx(1, "doofus"); 638 flags = HN_B | HN_NOSPACE | HN_DECIMAL; 639 humanize_number(buf, size, val, "", HN_AUTOSCALE, flags); 640 printf("%*s", size, buf); 641 } 642 643 static int hz, hdrcnt; 644 645 static long *cur_cp_times; 646 static long *last_cp_times; 647 static size_t size_cp_times; 648 649 static void 650 dovmstat(unsigned int interval, int reps) 651 { 652 struct vmtotal total; 653 time_t uptime, halfuptime; 654 struct devinfo *tmp_dinfo; 655 size_t size; 656 int ncpus, maxid; 657 u_long cpumask; 658 int rate_adj; 659 660 uptime = getuptime(); 661 halfuptime = uptime / 2; 662 rate_adj = 1; 663 664 /* 665 * If the user stops the program (control-Z) and then resumes it, 666 * print out the header again. 667 */ 668 (void)signal(SIGCONT, needhdr); 669 670 /* 671 * If our standard output is a tty, then install a SIGWINCH handler 672 * and set wresized so that our first iteration through the main 673 * vmstat loop will peek at the terminal's current rows to find out 674 * how many lines can fit in a screenful of output. 675 */ 676 if (isatty(fileno(stdout)) != 0) { 677 wresized = 1; 678 (void)signal(SIGWINCH, needresize); 679 } else { 680 wresized = 0; 681 winlines = VMSTAT_DEFAULT_LINES; 682 } 683 684 if (kd != NULL) { 685 if (namelist[X_STATHZ].n_type != 0 && 686 namelist[X_STATHZ].n_value != 0) 687 kread(X_STATHZ, &hz, sizeof(hz)); 688 if (!hz) 689 kread(X_HZ, &hz, sizeof(hz)); 690 } else { 691 struct clockinfo clockrate; 692 693 size = sizeof(clockrate); 694 mysysctl("kern.clockrate", &clockrate, &size, NULL, 0); 695 if (size != sizeof(clockrate)) 696 errx(1, "clockrate size mismatch"); 697 hz = clockrate.hz; 698 } 699 700 if (Pflag) { 701 ncpus = getcpuinfo(&cpumask, &maxid); 702 size_cp_times = sizeof(long) * (maxid + 1) * CPUSTATES; 703 cur_cp_times = calloc(1, size_cp_times); 704 last_cp_times = calloc(1, size_cp_times); 705 } 706 for (hdrcnt = 1;;) { 707 if (!--hdrcnt) 708 printhdr(ncpus, cpumask); 709 if (kd != NULL) { 710 if (kvm_getcptime(kd, cur.cp_time) < 0) 711 errx(1, "kvm_getcptime: %s", kvm_geterr(kd)); 712 } else { 713 size = sizeof(cur.cp_time); 714 mysysctl("kern.cp_time", &cur.cp_time, &size, NULL, 0); 715 if (size != sizeof(cur.cp_time)) 716 errx(1, "cp_time size mismatch"); 717 } 718 if (Pflag) { 719 size = size_cp_times; 720 mysysctl("kern.cp_times", cur_cp_times, &size, NULL, 0); 721 if (size != size_cp_times) 722 errx(1, "cp_times mismatch"); 723 } 724 725 tmp_dinfo = last.dinfo; 726 last.dinfo = cur.dinfo; 727 cur.dinfo = tmp_dinfo; 728 last.snap_time = cur.snap_time; 729 730 /* 731 * Here what we want to do is refresh our device stats. 732 * getdevs() returns 1 when the device list has changed. 733 * If the device list has changed, we want to go through 734 * the selection process again, in case a device that we 735 * were previously displaying has gone away. 736 */ 737 switch (devstat_getdevs(NULL, &cur)) { 738 case -1: 739 errx(1, "%s", devstat_errbuf); 740 break; 741 case 1: { 742 int retval; 743 744 num_devices = cur.dinfo->numdevs; 745 generation = cur.dinfo->generation; 746 747 retval = devstat_selectdevs(&dev_select, &num_selected, 748 &num_selections, &select_generation, 749 generation, cur.dinfo->devices, 750 num_devices, matches, num_matches, 751 specified_devices, 752 num_devices_specified, select_mode, 753 maxshowdevs, 0); 754 switch (retval) { 755 case -1: 756 errx(1, "%s", devstat_errbuf); 757 break; 758 case 1: 759 printhdr(ncpus, cpumask); 760 break; 761 default: 762 break; 763 } 764 } 765 default: 766 break; 767 } 768 769 fill_vmmeter(&sum); 770 fill_vmtotal(&total); 771 (void)printf("%2d %1d %1d", 772 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw); 773 #define vmstat_pgtok(a) ((a) * (sum.v_page_size >> 10)) 774 #define rate(x) (((x) * rate_adj + halfuptime) / uptime) /* round */ 775 if (hflag) { 776 printf(" "); 777 prthuman(total.t_avm * (u_int64_t)sum.v_page_size, 7); 778 printf(" "); 779 prthuman(total.t_free * (u_int64_t)sum.v_page_size, 6); 780 printf(" "); 781 } else { 782 printf(" %7d ", vmstat_pgtok(total.t_avm)); 783 printf(" %6d ", vmstat_pgtok(total.t_free)); 784 } 785 (void)printf("%5lu ", 786 (unsigned long)rate(sum.v_vm_faults - osum.v_vm_faults)); 787 (void)printf("%3lu ", 788 (unsigned long)rate(sum.v_reactivated - osum.v_reactivated)); 789 (void)printf("%3lu ", 790 (unsigned long)rate(sum.v_swapin + sum.v_vnodein - 791 (osum.v_swapin + osum.v_vnodein))); 792 (void)printf("%3lu ", 793 (unsigned long)rate(sum.v_swapout + sum.v_vnodeout - 794 (osum.v_swapout + osum.v_vnodeout))); 795 (void)printf("%5lu ", 796 (unsigned long)rate(sum.v_tfree - osum.v_tfree)); 797 (void)printf("%3lu ", 798 (unsigned long)rate(sum.v_pdpages - osum.v_pdpages)); 799 devstats(); 800 (void)printf("%4lu %4lu %4lu", 801 (unsigned long)rate(sum.v_intr - osum.v_intr), 802 (unsigned long)rate(sum.v_syscall - osum.v_syscall), 803 (unsigned long)rate(sum.v_swtch - osum.v_swtch)); 804 if (Pflag) 805 pcpustats(ncpus, cpumask, maxid); 806 else 807 cpustats(); 808 (void)printf("\n"); 809 (void)fflush(stdout); 810 if (reps >= 0 && --reps <= 0) 811 break; 812 osum = sum; 813 uptime = interval; 814 rate_adj = 1000; 815 /* 816 * We round upward to avoid losing low-frequency events 817 * (i.e., >= 1 per interval but < 1 per millisecond). 818 */ 819 if (interval != 1) 820 halfuptime = (uptime + 1) / 2; 821 else 822 halfuptime = 0; 823 (void)usleep(interval * 1000); 824 } 825 } 826 827 static void 828 printhdr(int ncpus, u_long cpumask) 829 { 830 int i, num_shown; 831 832 num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs; 833 (void)printf(" procs memory page%*s", 19, ""); 834 if (num_shown > 1) 835 (void)printf(" disks %*s", num_shown * 4 - 7, ""); 836 else if (num_shown == 1) 837 (void)printf("disk"); 838 (void)printf(" faults "); 839 if (Pflag) { 840 for (i = 0; i < ncpus; i++) { 841 if (cpumask & (1ul << i)) 842 printf("cpu%-2d ", i); 843 } 844 printf("\n"); 845 } else 846 printf("cpu\n"); 847 (void)printf(" r b w avm fre flt re pi po fr sr "); 848 for (i = 0; i < num_devices; i++) 849 if ((dev_select[i].selected) 850 && (dev_select[i].selected <= maxshowdevs)) 851 (void)printf("%c%c%d ", dev_select[i].device_name[0], 852 dev_select[i].device_name[1], 853 dev_select[i].unit_number); 854 (void)printf(" in sy cs"); 855 if (Pflag) { 856 for (i = 0; i < ncpus; i++) 857 printf(" us sy id"); 858 printf("\n"); 859 } else 860 printf(" us sy id\n"); 861 if (wresized != 0) 862 doresize(); 863 hdrcnt = winlines; 864 } 865 866 /* 867 * Force a header to be prepended to the next output. 868 */ 869 static void 870 needhdr(int dummy __unused) 871 { 872 873 hdrcnt = 1; 874 } 875 876 /* 877 * When the terminal is resized, force an update of the maximum number of rows 878 * printed between each header repetition. Then force a new header to be 879 * prepended to the next output. 880 */ 881 void 882 needresize(int signo) 883 { 884 885 wresized = 1; 886 hdrcnt = 1; 887 } 888 889 /* 890 * Update the global `winlines' count of terminal rows. 891 */ 892 void 893 doresize(void) 894 { 895 int status; 896 struct winsize w; 897 898 for (;;) { 899 status = ioctl(fileno(stdout), TIOCGWINSZ, &w); 900 if (status == -1 && errno == EINTR) 901 continue; 902 else if (status == -1) 903 err(1, "ioctl"); 904 if (w.ws_row > 3) 905 winlines = w.ws_row - 3; 906 else 907 winlines = VMSTAT_DEFAULT_LINES; 908 break; 909 } 910 911 /* 912 * Inhibit doresize() calls until we are rescheduled by SIGWINCH. 913 */ 914 wresized = 0; 915 } 916 917 #ifdef notyet 918 static void 919 dotimes(void) 920 { 921 unsigned int pgintime, rectime; 922 923 kread(X_REC, &rectime, sizeof(rectime)); 924 kread(X_PGIN, &pgintime, sizeof(pgintime)); 925 kread(X_SUM, &sum, sizeof(sum)); 926 (void)printf("%u reclaims, %u total time (usec)\n", 927 sum.v_pgrec, rectime); 928 (void)printf("average: %u usec / reclaim\n", rectime / sum.v_pgrec); 929 (void)printf("\n"); 930 (void)printf("%u page ins, %u total time (msec)\n", 931 sum.v_pgin, pgintime / 10); 932 (void)printf("average: %8.1f msec / page in\n", 933 pgintime / (sum.v_pgin * 10.0)); 934 } 935 #endif 936 937 static long 938 pct(long top, long bot) 939 { 940 long ans; 941 942 if (bot == 0) 943 return(0); 944 ans = (quad_t)top * 100 / bot; 945 return (ans); 946 } 947 948 #define PCT(top, bot) pct((long)(top), (long)(bot)) 949 950 static void 951 dosum(void) 952 { 953 struct nchstats lnchstats; 954 long nchtotal; 955 956 fill_vmmeter(&sum); 957 (void)printf("%9u cpu context switches\n", sum.v_swtch); 958 (void)printf("%9u device interrupts\n", sum.v_intr); 959 (void)printf("%9u software interrupts\n", sum.v_soft); 960 (void)printf("%9u traps\n", sum.v_trap); 961 (void)printf("%9u system calls\n", sum.v_syscall); 962 (void)printf("%9u kernel threads created\n", sum.v_kthreads); 963 (void)printf("%9u fork() calls\n", sum.v_forks); 964 (void)printf("%9u vfork() calls\n", sum.v_vforks); 965 (void)printf("%9u rfork() calls\n", sum.v_rforks); 966 (void)printf("%9u swap pager pageins\n", sum.v_swapin); 967 (void)printf("%9u swap pager pages paged in\n", sum.v_swappgsin); 968 (void)printf("%9u swap pager pageouts\n", sum.v_swapout); 969 (void)printf("%9u swap pager pages paged out\n", sum.v_swappgsout); 970 (void)printf("%9u vnode pager pageins\n", sum.v_vnodein); 971 (void)printf("%9u vnode pager pages paged in\n", sum.v_vnodepgsin); 972 (void)printf("%9u vnode pager pageouts\n", sum.v_vnodeout); 973 (void)printf("%9u vnode pager pages paged out\n", sum.v_vnodepgsout); 974 (void)printf("%9u page daemon wakeups\n", sum.v_pdwakeups); 975 (void)printf("%9u pages examined by the page daemon\n", sum.v_pdpages); 976 (void)printf("%9u pages reactivated\n", sum.v_reactivated); 977 (void)printf("%9u copy-on-write faults\n", sum.v_cow_faults); 978 (void)printf("%9u copy-on-write optimized faults\n", sum.v_cow_optim); 979 (void)printf("%9u zero fill pages zeroed\n", sum.v_zfod); 980 (void)printf("%9u zero fill pages prezeroed\n", sum.v_ozfod); 981 (void)printf("%9u intransit blocking page faults\n", sum.v_intrans); 982 (void)printf("%9u total VM faults taken\n", sum.v_vm_faults); 983 (void)printf("%9u page faults requiring I/O\n", sum.v_io_faults); 984 (void)printf("%9u pages affected by kernel thread creation\n", sum.v_kthreadpages); 985 (void)printf("%9u pages affected by fork()\n", sum.v_forkpages); 986 (void)printf("%9u pages affected by vfork()\n", sum.v_vforkpages); 987 (void)printf("%9u pages affected by rfork()\n", sum.v_rforkpages); 988 (void)printf("%9u pages cached\n", sum.v_tcached); 989 (void)printf("%9u pages freed\n", sum.v_tfree); 990 (void)printf("%9u pages freed by daemon\n", sum.v_dfree); 991 (void)printf("%9u pages freed by exiting processes\n", sum.v_pfree); 992 (void)printf("%9u pages active\n", sum.v_active_count); 993 (void)printf("%9u pages inactive\n", sum.v_inactive_count); 994 (void)printf("%9u pages in VM cache\n", sum.v_cache_count); 995 (void)printf("%9u pages wired down\n", sum.v_wire_count); 996 (void)printf("%9u pages free\n", sum.v_free_count); 997 (void)printf("%9u bytes per page\n", sum.v_page_size); 998 if (kd != NULL) { 999 kread(X_NCHSTATS, &lnchstats, sizeof(lnchstats)); 1000 } else { 1001 size_t size = sizeof(lnchstats); 1002 mysysctl("vfs.cache.nchstats", &lnchstats, &size, NULL, 0); 1003 if (size != sizeof(lnchstats)) 1004 errx(1, "vfs.cache.nchstats size mismatch"); 1005 } 1006 nchtotal = lnchstats.ncs_goodhits + lnchstats.ncs_neghits + 1007 lnchstats.ncs_badhits + lnchstats.ncs_falsehits + 1008 lnchstats.ncs_miss + lnchstats.ncs_long; 1009 (void)printf("%9ld total name lookups\n", nchtotal); 1010 (void)printf( 1011 "%9s cache hits (%ld%% pos + %ld%% neg) system %ld%% per-directory\n", 1012 "", PCT(lnchstats.ncs_goodhits, nchtotal), 1013 PCT(lnchstats.ncs_neghits, nchtotal), 1014 PCT(lnchstats.ncs_pass2, nchtotal)); 1015 (void)printf("%9s deletions %ld%%, falsehits %ld%%, toolong %ld%%\n", "", 1016 PCT(lnchstats.ncs_badhits, nchtotal), 1017 PCT(lnchstats.ncs_falsehits, nchtotal), 1018 PCT(lnchstats.ncs_long, nchtotal)); 1019 } 1020 1021 static void 1022 doforkst(void) 1023 { 1024 fill_vmmeter(&sum); 1025 (void)printf("%u forks, %u pages, average %.2f\n", 1026 sum.v_forks, sum.v_forkpages, 1027 sum.v_forks == 0 ? 0.0 : 1028 (double)sum.v_forkpages / sum.v_forks); 1029 (void)printf("%u vforks, %u pages, average %.2f\n", 1030 sum.v_vforks, sum.v_vforkpages, 1031 sum.v_vforks == 0 ? 0.0 : 1032 (double)sum.v_vforkpages / sum.v_vforks); 1033 (void)printf("%u rforks, %u pages, average %.2f\n", 1034 sum.v_rforks, sum.v_rforkpages, 1035 sum.v_rforks == 0 ? 0.0 : 1036 (double)sum.v_rforkpages / sum.v_rforks); 1037 } 1038 1039 static void 1040 devstats(void) 1041 { 1042 int dn, state; 1043 long double transfers_per_second; 1044 long double busy_seconds; 1045 long tmp; 1046 1047 for (state = 0; state < CPUSTATES; ++state) { 1048 tmp = cur.cp_time[state]; 1049 cur.cp_time[state] -= last.cp_time[state]; 1050 last.cp_time[state] = tmp; 1051 } 1052 1053 busy_seconds = cur.snap_time - last.snap_time; 1054 1055 for (dn = 0; dn < num_devices; dn++) { 1056 int di; 1057 1058 if ((dev_select[dn].selected == 0) 1059 || (dev_select[dn].selected > maxshowdevs)) 1060 continue; 1061 1062 di = dev_select[dn].position; 1063 1064 if (devstat_compute_statistics(&cur.dinfo->devices[di], 1065 &last.dinfo->devices[di], busy_seconds, 1066 DSM_TRANSFERS_PER_SECOND, &transfers_per_second, 1067 DSM_NONE) != 0) 1068 errx(1, "%s", devstat_errbuf); 1069 1070 (void)printf("%3.0Lf ", transfers_per_second); 1071 } 1072 } 1073 1074 static void 1075 percent(double pct, int *over) 1076 { 1077 char buf[10]; 1078 int l; 1079 1080 l = snprintf(buf, sizeof(buf), "%.0f", pct); 1081 if (l == 1 && *over) { 1082 printf("%s", buf); 1083 (*over)--; 1084 } else 1085 printf("%2s", buf); 1086 if (l > 2) 1087 (*over)++; 1088 } 1089 1090 static void 1091 cpustats(void) 1092 { 1093 int state, over; 1094 double lpct, total; 1095 1096 total = 0; 1097 for (state = 0; state < CPUSTATES; ++state) 1098 total += cur.cp_time[state]; 1099 if (total) 1100 lpct = 100.0 / total; 1101 else 1102 lpct = 0.0; 1103 over = 0; 1104 printf(" "); 1105 percent((cur.cp_time[CP_USER] + cur.cp_time[CP_NICE]) * lpct, &over); 1106 printf(" "); 1107 percent((cur.cp_time[CP_SYS] + cur.cp_time[CP_INTR]) * lpct, &over); 1108 printf(" "); 1109 percent(cur.cp_time[CP_IDLE] * lpct, &over); 1110 } 1111 1112 static void 1113 pcpustats(int ncpus, u_long cpumask, int maxid) 1114 { 1115 int state, i; 1116 double lpct, total; 1117 long tmp; 1118 int over; 1119 1120 /* devstats does this for cp_time */ 1121 for (i = 0; i <= maxid; i++) { 1122 if ((cpumask & (1ul << i)) == 0) 1123 continue; 1124 for (state = 0; state < CPUSTATES; ++state) { 1125 tmp = cur_cp_times[i * CPUSTATES + state]; 1126 cur_cp_times[i * CPUSTATES + state] -= last_cp_times[i * CPUSTATES + state]; 1127 last_cp_times[i * CPUSTATES + state] = tmp; 1128 } 1129 } 1130 1131 over = 0; 1132 for (i = 0; i <= maxid; i++) { 1133 if ((cpumask & (1ul << i)) == 0) 1134 continue; 1135 total = 0; 1136 for (state = 0; state < CPUSTATES; ++state) 1137 total += cur_cp_times[i * CPUSTATES + state]; 1138 if (total) 1139 lpct = 100.0 / total; 1140 else 1141 lpct = 0.0; 1142 printf(" "); 1143 percent((cur_cp_times[i * CPUSTATES + CP_USER] + 1144 cur_cp_times[i * CPUSTATES + CP_NICE]) * lpct, &over); 1145 printf(" "); 1146 percent((cur_cp_times[i * CPUSTATES + CP_SYS] + 1147 cur_cp_times[i * CPUSTATES + CP_INTR]) * lpct, &over); 1148 printf(" "); 1149 percent(cur_cp_times[i * CPUSTATES + CP_IDLE] * lpct, &over); 1150 } 1151 } 1152 1153 static void 1154 dointr(void) 1155 { 1156 unsigned long *intrcnt, uptime; 1157 uint64_t inttotal; 1158 size_t clen, inamlen, intrcntlen, istrnamlen; 1159 unsigned int i, nintr; 1160 char *intrname, *tintrname; 1161 1162 uptime = getuptime(); 1163 if (kd != NULL) { 1164 kread(X_SINTRCNT, &intrcntlen, sizeof(intrcntlen)); 1165 kread(X_SINTRNAMES, &inamlen, sizeof(inamlen)); 1166 if ((intrcnt = malloc(intrcntlen)) == NULL || 1167 (intrname = malloc(inamlen)) == NULL) 1168 err(1, "malloc()"); 1169 kread(X_INTRCNT, intrcnt, intrcntlen); 1170 kread(X_INTRNAMES, intrname, inamlen); 1171 } else { 1172 for (intrcnt = NULL, intrcntlen = 1024; ; intrcntlen *= 2) { 1173 if ((intrcnt = reallocf(intrcnt, intrcntlen)) == NULL) 1174 err(1, "reallocf()"); 1175 if (mysysctl("hw.intrcnt", 1176 intrcnt, &intrcntlen, NULL, 0) == 0) 1177 break; 1178 } 1179 for (intrname = NULL, inamlen = 1024; ; inamlen *= 2) { 1180 if ((intrname = reallocf(intrname, inamlen)) == NULL) 1181 err(1, "reallocf()"); 1182 if (mysysctl("hw.intrnames", 1183 intrname, &inamlen, NULL, 0) == 0) 1184 break; 1185 } 1186 } 1187 nintr = intrcntlen / sizeof(unsigned long); 1188 tintrname = intrname; 1189 istrnamlen = strlen("interrupt"); 1190 for (i = 0; i < nintr; i++) { 1191 clen = strlen(tintrname); 1192 if (clen > istrnamlen) 1193 istrnamlen = clen; 1194 tintrname += clen + 1; 1195 } 1196 (void)printf("%-*s %20s %10s\n", (int)istrnamlen, "interrupt", "total", 1197 "rate"); 1198 inttotal = 0; 1199 for (i = 0; i < nintr; i++) { 1200 if (intrname[0] != '\0' && (*intrcnt != 0 || aflag)) 1201 (void)printf("%-*s %20lu %10lu\n", (int)istrnamlen, 1202 intrname, *intrcnt, *intrcnt / uptime); 1203 intrname += strlen(intrname) + 1; 1204 inttotal += *intrcnt++; 1205 } 1206 (void)printf("%-*s %20" PRIu64 " %10" PRIu64 "\n", (int)istrnamlen, 1207 "Total", inttotal, inttotal / uptime); 1208 } 1209 1210 static void 1211 domemstat_malloc(void) 1212 { 1213 struct memory_type_list *mtlp; 1214 struct memory_type *mtp; 1215 int error, first, i; 1216 1217 mtlp = memstat_mtl_alloc(); 1218 if (mtlp == NULL) { 1219 warn("memstat_mtl_alloc"); 1220 return; 1221 } 1222 if (kd == NULL) { 1223 if (memstat_sysctl_malloc(mtlp, 0) < 0) { 1224 warnx("memstat_sysctl_malloc: %s", 1225 memstat_strerror(memstat_mtl_geterror(mtlp))); 1226 return; 1227 } 1228 } else { 1229 if (memstat_kvm_malloc(mtlp, kd) < 0) { 1230 error = memstat_mtl_geterror(mtlp); 1231 if (error == MEMSTAT_ERROR_KVM) 1232 warnx("memstat_kvm_malloc: %s", 1233 kvm_geterr(kd)); 1234 else 1235 warnx("memstat_kvm_malloc: %s", 1236 memstat_strerror(error)); 1237 } 1238 } 1239 printf("%13s %5s %6s %7s %8s Size(s)\n", "Type", "InUse", "MemUse", 1240 "HighUse", "Requests"); 1241 for (mtp = memstat_mtl_first(mtlp); mtp != NULL; 1242 mtp = memstat_mtl_next(mtp)) { 1243 if (memstat_get_numallocs(mtp) == 0 && 1244 memstat_get_count(mtp) == 0) 1245 continue; 1246 printf("%13s %5" PRIu64 " %5" PRIu64 "K %7s %8" PRIu64 " ", 1247 memstat_get_name(mtp), memstat_get_count(mtp), 1248 (memstat_get_bytes(mtp) + 1023) / 1024, "-", 1249 memstat_get_numallocs(mtp)); 1250 first = 1; 1251 for (i = 0; i < 32; i++) { 1252 if (memstat_get_sizemask(mtp) & (1 << i)) { 1253 if (!first) 1254 printf(","); 1255 printf("%d", 1 << (i + 4)); 1256 first = 0; 1257 } 1258 } 1259 printf("\n"); 1260 } 1261 memstat_mtl_free(mtlp); 1262 } 1263 1264 static void 1265 domemstat_zone(void) 1266 { 1267 struct memory_type_list *mtlp; 1268 struct memory_type *mtp; 1269 char name[MEMTYPE_MAXNAME + 1]; 1270 int error; 1271 1272 mtlp = memstat_mtl_alloc(); 1273 if (mtlp == NULL) { 1274 warn("memstat_mtl_alloc"); 1275 return; 1276 } 1277 if (kd == NULL) { 1278 if (memstat_sysctl_uma(mtlp, 0) < 0) { 1279 warnx("memstat_sysctl_uma: %s", 1280 memstat_strerror(memstat_mtl_geterror(mtlp))); 1281 return; 1282 } 1283 } else { 1284 if (memstat_kvm_uma(mtlp, kd) < 0) { 1285 error = memstat_mtl_geterror(mtlp); 1286 if (error == MEMSTAT_ERROR_KVM) 1287 warnx("memstat_kvm_uma: %s", 1288 kvm_geterr(kd)); 1289 else 1290 warnx("memstat_kvm_uma: %s", 1291 memstat_strerror(error)); 1292 } 1293 } 1294 printf("%-20s %6s %6s %8s %8s %8s %4s %4s\n\n", "ITEM", "SIZE", 1295 "LIMIT", "USED", "FREE", "REQ", "FAIL", "SLEEP"); 1296 for (mtp = memstat_mtl_first(mtlp); mtp != NULL; 1297 mtp = memstat_mtl_next(mtp)) { 1298 strlcpy(name, memstat_get_name(mtp), MEMTYPE_MAXNAME); 1299 strcat(name, ":"); 1300 printf("%-20s %6" PRIu64 ", %6" PRIu64 ",%8" PRIu64 ",%8" PRIu64 1301 ",%8" PRIu64 ",%4" PRIu64 ",%4" PRIu64 "\n", name, 1302 memstat_get_size(mtp), memstat_get_countlimit(mtp), 1303 memstat_get_count(mtp), memstat_get_free(mtp), 1304 memstat_get_numallocs(mtp), memstat_get_failures(mtp), 1305 memstat_get_sleeps(mtp)); 1306 } 1307 memstat_mtl_free(mtlp); 1308 printf("\n"); 1309 } 1310 1311 /* 1312 * kread reads something from the kernel, given its nlist index. 1313 */ 1314 static void 1315 kreado(int nlx, void *addr, size_t size, size_t offset) 1316 { 1317 const char *sym; 1318 1319 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) { 1320 sym = namelist[nlx].n_name; 1321 if (*sym == '_') 1322 ++sym; 1323 errx(1, "symbol %s not defined", sym); 1324 } 1325 if ((size_t)kvm_read(kd, namelist[nlx].n_value + offset, addr, 1326 size) != size) { 1327 sym = namelist[nlx].n_name; 1328 if (*sym == '_') 1329 ++sym; 1330 errx(1, "%s: %s", sym, kvm_geterr(kd)); 1331 } 1332 } 1333 1334 static void 1335 kread(int nlx, void *addr, size_t size) 1336 { 1337 kreado(nlx, addr, size, 0); 1338 } 1339 1340 static char * 1341 kgetstr(const char *strp) 1342 { 1343 int n = 0, size = 1; 1344 char *ret = NULL; 1345 1346 do { 1347 if (size == n + 1) { 1348 ret = realloc(ret, size); 1349 if (ret == NULL) 1350 err(1, "%s: realloc", __func__); 1351 size *= 2; 1352 } 1353 if (kvm_read(kd, (u_long)strp + n, &ret[n], 1) != 1) 1354 errx(1, "%s: %s", __func__, kvm_geterr(kd)); 1355 } while (ret[n++] != '\0'); 1356 return (ret); 1357 } 1358 1359 static void 1360 usage(void) 1361 { 1362 (void)fprintf(stderr, "%s%s", 1363 "usage: vmstat [-afHhimPsz] [-c count] [-M core [-N system]] [-w wait]\n", 1364 " [-n devs] [-p type,if,pass] [disks]\n"); 1365 exit(1); 1366 } 1367