Annotation of src/usr.bin/vmstat/vmstat.c, Revision 1.156
1.11 deraadt 1: /* $NetBSD: vmstat.c,v 1.29.4.1 1996/06/05 00:21:05 cgd Exp $ */
1.156 ! mpi 2: /* $OpenBSD: vmstat.c,v 1.155 2022/12/04 23:50:50 cheloha Exp $ */
1.1 deraadt 3:
4: /*
5: * Copyright (c) 1980, 1986, 1991, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
1.77 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
1.48 art 32:
1.1 deraadt 33: #include <sys/time.h>
1.152 deraadt 34: #include <sys/signal.h>
1.1 deraadt 35: #include <sys/proc.h>
36: #include <sys/namei.h>
37: #include <sys/malloc.h>
38: #include <sys/ioctl.h>
39: #include <sys/sysctl.h>
40: #include <sys/device.h>
1.48 art 41: #include <sys/pool.h>
1.133 miod 42: #include <sys/sched.h>
1.128 mpi 43: #include <sys/vmmeter.h>
44:
1.144 guenther 45: #include <ctype.h>
1.21 millert 46: #include <err.h>
1.1 deraadt 47: #include <errno.h>
1.144 guenther 48: #include <fcntl.h>
49: #include <kvm.h>
50: #include <limits.h>
51: #include <nlist.h>
52: #include <paths.h>
1.1 deraadt 53: #include <signal.h>
54: #include <stdio.h>
55: #include <stdlib.h>
56: #include <string.h>
1.144 guenther 57: #include <time.h>
58: #include <unistd.h>
59:
1.6 tholo 60: #include "dkstats.h"
1.29 art 61:
1.1 deraadt 62: struct nlist namelist[] = {
1.70 deraadt 63: #define X_UVMEXP 0 /* sysctl */
1.29 art 64: { "_uvmexp" },
1.124 guenther 65: #define X_TIME_UPTIME 1
66: { "_time_uptime" },
1.70 deraadt 67: #define X_NCHSTATS 2 /* sysctl */
1.1 deraadt 68: { "_nchstats" },
1.70 deraadt 69: #define X_KMEMSTAT 3 /* sysctl */
70: { "_kmemstats" },
71: #define X_KMEMBUCKETS 4 /* sysctl */
72: { "_bucket" },
73: #define X_FORKSTAT 5 /* sysctl */
74: { "_forkstat" },
1.154 visa 75: #define X_POOLHEAD 6 /* sysctl */
1.70 deraadt 76: { "_pool_head" },
1.154 visa 77: #define X_NAPTIME 7
1.124 guenther 78: { "_naptime" },
1.154 visa 79: { NULL },
1.1 deraadt 80: };
81:
1.6 tholo 82: /* Objects defined in dkstats.c */
1.73 tdeval 83: extern struct _disk cur, last;
1.10 deraadt 84: extern char **dr_name;
85: extern int *dk_select, dk_ndrive;
1.1 deraadt 86:
1.29 art 87: struct uvmexp uvmexp, ouvmexp;
1.6 tholo 88: int ndrives;
1.1 deraadt 89:
90: int winlines = 20;
91:
92: kvm_t *kd;
93:
94: #define FORKSTAT 0x01
95: #define INTRSTAT 0x02
96: #define MEMSTAT 0x04
97: #define SUMSTAT 0x08
98: #define TIMESTAT 0x10
99: #define VMSTAT 0x20
100:
1.66 millert 101: void cpustats(void);
1.101 otto 102: time_t getuptime(void);
1.66 millert 103: void dkstats(void);
104: void dointr(void);
105: void domem(void);
106: void dopool(void);
107: void dosum(void);
108: void dovmstat(u_int, int);
109: void kread(int, void *, size_t);
110: void usage(void);
111: void dotimes(void);
112: void doforkst(void);
1.101 otto 113: void needhdr(int);
1.112 naddy 114: int pct(int64_t, int64_t);
1.66 millert 115: void printhdr(void);
1.1 deraadt 116:
1.66 millert 117: char **choosedrives(char **);
1.10 deraadt 118:
119: /* Namelist and memory file names. */
120: char *nlistf, *memf;
1.6 tholo 121:
1.50 art 122: extern char *__progname;
123:
1.65 art 124: int verbose = 0;
1.87 aaron 125: int zflag = 0;
1.65 art 126:
1.21 millert 127: int
1.72 deraadt 128: main(int argc, char *argv[])
1.1 deraadt 129: {
1.102 deraadt 130: char errbuf[_POSIX2_LINE_MAX];
1.126 chl 131: int c, todo = 0, reps = 0;
1.149 deraadt 132: struct winsize winsize;
1.102 deraadt 133: const char *errstr;
134: u_int interval = 0;
1.1 deraadt 135:
1.87 aaron 136: while ((c = getopt(argc, argv, "c:fiM:mN:stw:vz")) != -1) {
1.1 deraadt 137: switch (c) {
138: case 'c':
1.137 tedu 139: reps = strtonum(optarg, 0, INT_MAX, &errstr);
140: if (errstr)
141: errx(1, "-c %s: %s", optarg, errstr);
1.1 deraadt 142: break;
143: case 'f':
144: todo |= FORKSTAT;
145: break;
146: case 'i':
147: todo |= INTRSTAT;
148: break;
149: case 'M':
150: memf = optarg;
151: break;
152: case 'm':
153: todo |= MEMSTAT;
154: break;
155: case 'N':
156: nlistf = optarg;
157: break;
158: case 's':
159: todo |= SUMSTAT;
160: break;
161: case 't':
162: todo |= TIMESTAT;
163: break;
164: case 'w':
1.102 deraadt 165: interval = (u_int)strtonum(optarg, 0, 1000, &errstr);
166: if (errstr)
1.104 pedro 167: errx(1, "-w %s: %s", optarg, errstr);
1.1 deraadt 168: break;
1.65 art 169: case 'v':
170: verbose = 1;
171: break;
1.87 aaron 172: case 'z':
173: zflag = 1;
174: break;
1.1 deraadt 175: default:
176: usage();
177: }
178: }
179: argc -= optind;
180: argv += optind;
181:
182: if (todo == 0)
183: todo = VMSTAT;
184:
1.56 angelos 185: if (nlistf != NULL || memf != NULL) {
186: kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
187: if (kd == 0)
188: errx(1, "kvm_openfiles: %s", errbuf);
189:
190: if ((c = kvm_nlist(kd, namelist)) != 0) {
191: if (c > 0) {
192: (void)fprintf(stderr,
193: "%s: undefined symbols:", __progname);
194: for (c = 0;
195: c < sizeof(namelist)/sizeof(namelist[0]);
196: c++)
197: if (namelist[c].n_type == 0)
198: fprintf(stderr, " %s",
199: namelist[c].n_name);
200: (void)fputc('\n', stderr);
201: exit(1);
202: } else
203: errx(1, "kvm_nlist: %s", kvm_geterr(kd));
204: }
1.115 lum 205: }
1.1 deraadt 206:
207: if (todo & VMSTAT) {
1.6 tholo 208: dkinit(0); /* Initialize disk stats, no disks selected. */
209: argv = choosedrives(argv); /* Select disks. */
1.149 deraadt 210: }
1.1 deraadt 211:
1.149 deraadt 212: if (unveil("/", "") == -1)
1.151 beck 213: err(1, "unveil /");
1.149 deraadt 214: if (unveil(NULL, NULL) == -1)
215: err(1, "unveil");
216:
217: winsize.ws_row = 0;
218: if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &winsize) == 0) {
219: if (winsize.ws_row > 0)
220: winlines = winsize.ws_row;
1.1 deraadt 221: }
1.25 deraadt 222:
1.1 deraadt 223: #define BACKWARD_COMPATIBILITY
224: #ifdef BACKWARD_COMPATIBILITY
225: if (*argv) {
1.102 deraadt 226: interval = (u_int)strtonum(*argv, 0, 1000, &errstr);
227: if (errstr)
1.137 tedu 228: errx(1, "interval %s: %s", *argv, errstr);
1.103 deraadt 229:
1.137 tedu 230: if (*++argv) {
231: reps = strtonum(*argv, 0, INT_MAX, &errstr);
232: if (errstr)
233: errx(1, "reps %s: %s", *argv, errstr);
234: }
1.1 deraadt 235: }
236: #endif
237:
238: if (interval) {
239: if (!reps)
240: reps = -1;
241: } else if (reps)
242: interval = 1;
243:
244: if (todo & FORKSTAT)
245: doforkst();
1.48 art 246: if (todo & MEMSTAT) {
1.1 deraadt 247: domem();
1.48 art 248: dopool();
249: }
1.1 deraadt 250: if (todo & SUMSTAT)
251: dosum();
252: if (todo & TIMESTAT)
253: dotimes();
254: if (todo & INTRSTAT)
255: dointr();
256: if (todo & VMSTAT)
257: dovmstat(interval, reps);
258: exit(0);
259: }
260:
261: char **
1.72 deraadt 262: choosedrives(char **argv)
1.1 deraadt 263: {
1.62 mpech 264: int i;
1.1 deraadt 265:
266: /*
267: * Choose drives to be displayed. Priority goes to (in order) drives
268: * supplied as arguments, default drives. If everything isn't filled
269: * in and there are drives not taken care of, display the first few
270: * that fit.
271: */
272: #define BACKWARD_COMPATIBILITY
273: for (ndrives = 0; *argv; ++argv) {
274: #ifdef BACKWARD_COMPATIBILITY
1.127 deraadt 275: if (isdigit((unsigned char)**argv))
1.1 deraadt 276: break;
277: #endif
278: for (i = 0; i < dk_ndrive; i++) {
279: if (strcmp(dr_name[i], *argv))
280: continue;
1.6 tholo 281: dk_select[i] = 1;
1.1 deraadt 282: ++ndrives;
283: break;
284: }
1.137 tedu 285: if (i == dk_ndrive)
286: errx(1, "invalid interval or drive name: %s", *argv);
1.1 deraadt 287: }
1.64 deraadt 288: for (i = 0; i < dk_ndrive && ndrives < 2; i++) {
1.6 tholo 289: if (dk_select[i])
1.1 deraadt 290: continue;
1.6 tholo 291: dk_select[i] = 1;
1.1 deraadt 292: ++ndrives;
293: }
294: return(argv);
295: }
296:
1.19 deraadt 297: time_t
1.72 deraadt 298: getuptime(void)
1.1 deraadt 299: {
1.124 guenther 300: struct timespec uptime;
301: time_t time_uptime, naptime;
1.1 deraadt 302:
1.124 guenther 303: if (nlistf == NULL && memf == NULL) {
304: if (clock_gettime(CLOCK_UPTIME, &uptime) == -1)
305: err(1, "clock_gettime");
306: return (uptime.tv_sec);
1.50 art 307: }
308:
1.124 guenther 309: kread(X_NAPTIME, &naptime, sizeof(naptime));
310: kread(X_TIME_UPTIME, &time_uptime, sizeof(time_uptime));
311: return (time_uptime - naptime);
1.1 deraadt 312: }
313:
1.105 cloder 314: int hz;
315: volatile sig_atomic_t hdrcnt;
1.1 deraadt 316:
317: void
1.72 deraadt 318: dovmstat(u_int interval, int reps)
1.1 deraadt 319: {
320: time_t uptime, halfuptime;
1.50 art 321: struct clockinfo clkinfo;
1.102 deraadt 322: struct vmtotal total;
1.1 deraadt 323: size_t size;
1.102 deraadt 324: int mib[2];
1.1 deraadt 325:
326: uptime = getuptime();
327: halfuptime = uptime / 2;
328: (void)signal(SIGCONT, needhdr);
329:
1.50 art 330: mib[0] = CTL_KERN;
331: mib[1] = KERN_CLOCKRATE;
332: size = sizeof(clkinfo);
1.146 deraadt 333: if (sysctl(mib, 2, &clkinfo, &size, NULL, 0) == -1) {
1.56 angelos 334: warn("could not read kern.clockrate");
1.50 art 335: return;
336: }
337: hz = clkinfo.stathz;
1.1 deraadt 338:
339: for (hdrcnt = 1;;) {
1.6 tholo 340: /* Read new disk statistics */
341: dkreadstats();
1.73 tdeval 342: if (!--hdrcnt || last.dk_ndrive != cur.dk_ndrive)
343: printhdr();
1.56 angelos 344: if (nlistf == NULL && memf == NULL) {
345: size = sizeof(struct uvmexp);
1.52 angelos 346: mib[0] = CTL_VM;
347: mib[1] = VM_UVMEXP;
1.146 deraadt 348: if (sysctl(mib, 2, &uvmexp, &size, NULL, 0) == -1) {
1.56 angelos 349: warn("could not get vm.uvmexp");
1.139 mmcc 350: memset(&uvmexp, 0, sizeof(struct uvmexp));
1.52 angelos 351: }
1.56 angelos 352: } else {
353: kread(X_UVMEXP, &uvmexp, sizeof(struct uvmexp));
1.52 angelos 354: }
1.1 deraadt 355: size = sizeof(total);
356: mib[0] = CTL_VM;
357: mib[1] = VM_METER;
1.146 deraadt 358: if (sysctl(mib, 2, &total, &size, NULL, 0) == -1) {
1.56 angelos 359: warn("could not read vm.vmmeter");
1.139 mmcc 360: memset(&total, 0, sizeof(total));
1.1 deraadt 361: }
1.142 mpi 362: (void)printf("%2u %3u", total.t_rq - 1, total.t_sl);
1.123 guenther 363: #define rate(x) ((unsigned)((((unsigned)x) + halfuptime) / uptime)) /* round */
1.102 deraadt 364: #define pgtok(a) ((a) * ((unsigned int)uvmexp.pagesize >> 10))
1.142 mpi 365: (void)printf("%5uM %6uM ",
366: pgtok(uvmexp.active + uvmexp.swpginuse) / 1024,
367: pgtok(uvmexp.free) / 1024);
1.106 sobrado 368: (void)printf("%4u ", rate(uvmexp.faults - ouvmexp.faults));
1.29 art 369: (void)printf("%3u ", rate(uvmexp.pdreact - ouvmexp.pdreact));
370: (void)printf("%3u ", rate(uvmexp.pageins - ouvmexp.pageins));
371: (void)printf("%3u %3u ",
372: rate(uvmexp.pdpageouts - ouvmexp.pdpageouts), 0);
373: (void)printf("%3u ", rate(uvmexp.pdscans - ouvmexp.pdscans));
374: dkstats();
1.64 deraadt 375: (void)printf("%4u %5u %4u ",
1.29 art 376: rate(uvmexp.intrs - ouvmexp.intrs),
377: rate(uvmexp.syscalls - ouvmexp.syscalls),
378: rate(uvmexp.swtch - ouvmexp.swtch));
1.1 deraadt 379: cpustats();
380: (void)printf("\n");
381: (void)fflush(stdout);
382: if (reps >= 0 && --reps <= 0)
383: break;
1.29 art 384: ouvmexp = uvmexp;
1.1 deraadt 385: uptime = interval;
386: /*
387: * We round upward to avoid losing low-frequency events
388: * (i.e., >= 1 per interval but < 1 per second).
389: */
1.14 deraadt 390: halfuptime = uptime == 1 ? 0 : (uptime + 1) / 2;
1.1 deraadt 391: (void)sleep(interval);
392: }
393: }
394:
1.21 millert 395: void
1.72 deraadt 396: printhdr(void)
1.1 deraadt 397: {
1.62 mpech 398: int i;
1.114 tedu 399: static int printedhdr;
400:
401: if (printedhdr && !isatty(STDOUT_FILENO))
402: return;
1.1 deraadt 403:
1.108 sobrado 404: (void)printf(" procs memory page%*s", 20, "");
1.6 tholo 405: if (ndrives > 0)
1.106 sobrado 406: (void)printf("%s %*straps cpu\n",
1.6 tholo 407: ((ndrives > 1) ? "disks" : "disk"),
1.106 sobrado 408: ((ndrives > 1) ? ndrives * 4 - 5 : 0), "");
1.1 deraadt 409: else
1.106 sobrado 410: (void)printf("%*s traps cpu\n",
1.6 tholo 411: ndrives * 3, "");
412:
1.142 mpi 413: (void)printf(" r s avm fre flt re pi po fr sr ");
1.1 deraadt 414: for (i = 0; i < dk_ndrive; i++)
1.6 tholo 415: if (dk_select[i])
1.67 ho 416: (void)printf("%c%c%c ", dr_name[i][0],
1.64 deraadt 417: dr_name[i][1],
1.1 deraadt 418: dr_name[i][strlen(dr_name[i]) - 1]);
1.79 tedu 419: (void)printf(" int sys cs us sy id\n");
1.1 deraadt 420: hdrcnt = winlines - 2;
1.114 tedu 421: printedhdr = 1;
1.1 deraadt 422: }
423:
424: /*
425: * Force a header to be prepended to the next output.
426: */
427: void
1.141 guenther 428: needhdr(__unused int signo)
1.1 deraadt 429: {
430:
431: hdrcnt = 1;
432: }
433:
434: void
1.72 deraadt 435: dotimes(void)
1.1 deraadt 436: {
437: u_int pgintime, rectime;
1.102 deraadt 438: size_t size;
1.52 angelos 439: int mib[2];
1.1 deraadt 440:
1.56 angelos 441: /* XXX Why are these set to 0 ? This doesn't look right. */
1.12 tholo 442: pgintime = 0;
443: rectime = 0;
1.56 angelos 444:
445: if (nlistf == NULL && memf == NULL) {
446: size = sizeof(struct uvmexp);
1.52 angelos 447: mib[0] = CTL_VM;
448: mib[1] = VM_UVMEXP;
1.146 deraadt 449: if (sysctl(mib, 2, &uvmexp, &size, NULL, 0) == -1) {
1.56 angelos 450: warn("could not read vm.uvmexp");
1.139 mmcc 451: memset(&uvmexp, 0, sizeof(struct uvmexp));
1.52 angelos 452: }
1.56 angelos 453: } else {
454: kread(X_UVMEXP, &uvmexp, sizeof(struct uvmexp));
1.52 angelos 455: }
456:
1.29 art 457: (void)printf("%u reactivates, %u total time (usec)\n",
458: uvmexp.pdreact, rectime);
1.89 miod 459: if (uvmexp.pdreact != 0)
460: (void)printf("average: %u usec / reclaim\n",
461: rectime / uvmexp.pdreact);
1.29 art 462: (void)printf("\n");
463: (void)printf("%u page ins, %u total time (msec)\n",
464: uvmexp.pageins, pgintime / 10);
1.89 miod 465: if (uvmexp.pageins != 0)
466: (void)printf("average: %8.1f msec / page in\n",
1.103 deraadt 467: pgintime / (uvmexp.pageins * 10.0));
1.1 deraadt 468: }
469:
1.21 millert 470: int
1.112 naddy 471: pct(int64_t top, int64_t bot)
1.1 deraadt 472: {
1.102 deraadt 473: int ans;
1.1 deraadt 474:
475: if (bot == 0)
476: return(0);
1.112 naddy 477: ans = top * 100 / bot;
1.1 deraadt 478: return (ans);
479: }
480:
481: void
1.72 deraadt 482: dosum(void)
1.1 deraadt 483: {
484: struct nchstats nchstats;
1.154 visa 485: int mib[2];
1.112 naddy 486: long long nchtotal;
1.52 angelos 487: size_t size;
1.1 deraadt 488:
1.56 angelos 489: if (nlistf == NULL && memf == NULL) {
490: size = sizeof(struct uvmexp);
1.52 angelos 491: mib[0] = CTL_VM;
492: mib[1] = VM_UVMEXP;
1.146 deraadt 493: if (sysctl(mib, 2, &uvmexp, &size, NULL, 0) == -1) {
1.56 angelos 494: warn("could not read vm.uvmexp");
1.139 mmcc 495: memset(&uvmexp, 0, sizeof(struct uvmexp));
1.52 angelos 496: }
1.56 angelos 497: } else {
498: kread(X_UVMEXP, &uvmexp, sizeof(struct uvmexp));
1.52 angelos 499: }
500:
1.32 art 501: /* vm_page constants */
1.35 hugh 502: (void)printf("%11u bytes per page\n", uvmexp.pagesize);
1.32 art 503:
504: /* vm_page counters */
1.35 hugh 505: (void)printf("%11u pages managed\n", uvmexp.npages);
506: (void)printf("%11u pages free\n", uvmexp.free);
507: (void)printf("%11u pages active\n", uvmexp.active);
508: (void)printf("%11u pages inactive\n", uvmexp.inactive);
509: (void)printf("%11u pages being paged out\n", uvmexp.paging);
510: (void)printf("%11u pages wired\n", uvmexp.wired);
1.71 art 511: (void)printf("%11u pages zeroed\n", uvmexp.zeropages);
1.35 hugh 512: (void)printf("%11u pages reserved for pagedaemon\n",
1.48 art 513: uvmexp.reserve_pagedaemon);
1.35 hugh 514: (void)printf("%11u pages reserved for kernel\n",
1.48 art 515: uvmexp.reserve_kernel);
1.156 ! mpi 516: (void)printf("%11u pages in per-cpu caches\n",
! 517: uvmexp.percpucaches);
1.32 art 518:
1.156 ! mpi 519: /* per-cpu cache */
! 520: (void)printf("%11u per-cpu cache hits\n", uvmexp.pcphit);
! 521: (void)printf("%11u per-cpu cache misses\n", uvmexp.pcpmiss);
1.32 art 522: /* swap */
1.35 hugh 523: (void)printf("%11u swap pages\n", uvmexp.swpages);
524: (void)printf("%11u swap pages in use\n", uvmexp.swpginuse);
1.32 art 525:
526: /* stat counters */
1.35 hugh 527: (void)printf("%11u page faults\n", uvmexp.faults);
528: (void)printf("%11u traps\n", uvmexp.traps);
529: (void)printf("%11u interrupts\n", uvmexp.intrs);
530: (void)printf("%11u cpu context switches\n", uvmexp.swtch);
1.95 mickey 531: (void)printf("%11u fpu context switches\n", uvmexp.fpswtch);
1.35 hugh 532: (void)printf("%11u software interrupts\n", uvmexp.softs);
533: (void)printf("%11u syscalls\n", uvmexp.syscalls);
534: (void)printf("%11u pagein operations\n", uvmexp.pageins);
535: (void)printf("%11u forks\n", uvmexp.forks);
536: (void)printf("%11u forks where vmspace is shared\n",
1.48 art 537: uvmexp.forks_sharevm);
1.97 pedro 538: (void)printf("%11u kernel map entries\n", uvmexp.kmapent);
1.132 kettenis 539: (void)printf("%11u zeroed page hits\n", uvmexp.pga_zerohit);
540: (void)printf("%11u zeroed page misses\n", uvmexp.pga_zeromiss);
1.32 art 541:
542: /* daemon counters */
1.64 deraadt 543: (void)printf("%11u number of times the pagedaemon woke up\n",
1.48 art 544: uvmexp.pdwoke);
1.35 hugh 545: (void)printf("%11u revolutions of the clock hand\n", uvmexp.pdrevs);
546: (void)printf("%11u pages freed by pagedaemon\n", uvmexp.pdfreed);
547: (void)printf("%11u pages scanned by pagedaemon\n", uvmexp.pdscans);
548: (void)printf("%11u pages reactivated by pagedaemon\n", uvmexp.pdreact);
549: (void)printf("%11u busy pages found by pagedaemon\n", uvmexp.pdbusy);
1.29 art 550:
1.56 angelos 551: if (nlistf == NULL && memf == NULL) {
1.52 angelos 552: size = sizeof(nchstats);
553: mib[0] = CTL_KERN;
554: mib[1] = KERN_NCHSTATS;
1.146 deraadt 555: if (sysctl(mib, 2, &nchstats, &size, NULL, 0) == -1) {
1.56 angelos 556: warn("could not read kern.nchstats");
1.139 mmcc 557: memset(&nchstats, 0, sizeof(nchstats));
1.52 angelos 558: }
1.56 angelos 559: } else {
560: kread(X_NCHSTATS, &nchstats, sizeof(nchstats));
1.52 angelos 561: }
562:
1.1 deraadt 563: nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits +
564: nchstats.ncs_badhits + nchstats.ncs_falsehits +
565: nchstats.ncs_miss + nchstats.ncs_long;
1.112 naddy 566: (void)printf("%11lld total name lookups\n", nchtotal);
1.52 angelos 567: (void)printf("%11s cache hits (%d%% pos + %d%% neg) system %d%% "
568: "per-directory\n",
1.112 naddy 569: "", pct(nchstats.ncs_goodhits, nchtotal),
570: pct(nchstats.ncs_neghits, nchtotal),
571: pct(nchstats.ncs_pass2, nchtotal));
1.35 hugh 572: (void)printf("%11s deletions %d%%, falsehits %d%%, toolong %d%%\n", "",
1.112 naddy 573: pct(nchstats.ncs_badhits, nchtotal),
574: pct(nchstats.ncs_falsehits, nchtotal),
575: pct(nchstats.ncs_long, nchtotal));
1.1 deraadt 576: }
577:
578: void
1.72 deraadt 579: doforkst(void)
1.1 deraadt 580: {
581: struct forkstat fks;
1.52 angelos 582: size_t size;
583: int mib[2];
584:
1.56 angelos 585: if (nlistf == NULL && memf == NULL) {
1.52 angelos 586: size = sizeof(struct forkstat);
587: mib[0] = CTL_KERN;
588: mib[1] = KERN_FORKSTAT;
1.146 deraadt 589: if (sysctl(mib, 2, &fks, &size, NULL, 0) == -1) {
1.56 angelos 590: warn("could not read kern.forkstat");
1.139 mmcc 591: memset(&fks, 0, sizeof(struct forkstat));
1.52 angelos 592: }
1.56 angelos 593: } else {
594: kread(X_FORKSTAT, &fks, sizeof(struct forkstat));
1.52 angelos 595: }
1.1 deraadt 596:
1.140 tedu 597: (void)printf("%u forks, %llu pages, average %.2f\n",
1.1 deraadt 598: fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork);
1.140 tedu 599: (void)printf("%u vforks, %llu pages, average %.2f\n",
1.72 deraadt 600: fks.cntvfork, fks.sizvfork,
601: (double)fks.sizvfork / (fks.cntvfork ? fks.cntvfork : 1));
1.140 tedu 602: (void)printf("%u __tforks, %llu pages, average %.2f\n",
1.119 deraadt 603: fks.cnttfork, fks.siztfork,
604: (double)fks.siztfork / (fks.cnttfork ? fks.cnttfork : 1));
1.140 tedu 605: (void)printf("%u kthread creations, %llu pages, average %.2f\n",
1.72 deraadt 606: fks.cntkthread, fks.sizkthread,
607: (double)fks.sizkthread / (fks.cntkthread ? fks.cntkthread : 1));
1.1 deraadt 608: }
609:
610: void
1.72 deraadt 611: dkstats(void)
1.1 deraadt 612: {
1.62 mpech 613: int dn, state;
1.1 deraadt 614: double etime;
615:
1.6 tholo 616: /* Calculate disk stat deltas. */
617: dkswap();
1.1 deraadt 618: etime = 0;
619: for (state = 0; state < CPUSTATES; ++state) {
1.6 tholo 620: etime += cur.cp_time[state];
1.1 deraadt 621: }
622: if (etime == 0)
623: etime = 1;
624: etime /= hz;
625: for (dn = 0; dn < dk_ndrive; ++dn) {
1.6 tholo 626: if (!dk_select[dn])
1.1 deraadt 627: continue;
1.82 tedu 628: (void)printf("%3.0f ",
629: (cur.dk_rxfer[dn] + cur.dk_rxfer[dn]) / etime);
1.1 deraadt 630: }
631: }
632:
633: void
1.72 deraadt 634: cpustats(void)
1.1 deraadt 635: {
1.102 deraadt 636: double percent, total;
1.62 mpech 637: int state;
1.1 deraadt 638:
639: total = 0;
640: for (state = 0; state < CPUSTATES; ++state)
1.6 tholo 641: total += cur.cp_time[state];
1.1 deraadt 642: if (total)
1.101 otto 643: percent = 100 / total;
1.1 deraadt 644: else
1.101 otto 645: percent = 0;
646: (void)printf("%2.0f ", (cur.cp_time[CP_USER] + cur.cp_time[CP_NICE]) * percent);
1.147 claudio 647: (void)printf("%2.0f ", (cur.cp_time[CP_SYS] + cur.cp_time[CP_SPIN] + cur.cp_time[CP_INTR]) * percent);
1.101 otto 648: (void)printf("%2.0f", cur.cp_time[CP_IDLE] * percent);
1.1 deraadt 649: }
650:
651: void
1.72 deraadt 652: dointr(void)
1.74 art 653: {
1.102 deraadt 654: int nintr, mib[4], i;
655: char intrname[128];
656: u_int64_t inttotal;
1.74 art 657: time_t uptime;
658: size_t siz;
659:
1.93 miod 660: if (nlistf != NULL || memf != NULL) {
661: errx(1,
662: "interrupt statistics are only available on live kernels");
663: }
664:
1.74 art 665: uptime = getuptime();
666:
667: mib[0] = CTL_KERN;
668: mib[1] = KERN_INTRCNT;
669: mib[2] = KERN_INTRCNT_NUM;
670: siz = sizeof(nintr);
1.146 deraadt 671: if (sysctl(mib, 3, &nintr, &siz, NULL, 0) == -1) {
1.74 art 672: warnx("could not read kern.intrcnt.nintrcnt");
673: return;
674: }
675:
1.91 deraadt 676: (void)printf("%-16s %20s %8s\n", "interrupt", "total", "rate");
1.87 aaron 677:
1.74 art 678: inttotal = 0;
679: for (i = 0; i < nintr; i++) {
1.87 aaron 680: char name[128];
1.141 guenther 681: uint64_t cnt;
1.87 aaron 682: int vector;
1.74 art 683:
684: mib[0] = CTL_KERN;
685: mib[1] = KERN_INTRCNT;
686: mib[2] = KERN_INTRCNT_NAME;
687: mib[3] = i;
1.87 aaron 688: siz = sizeof(name);
1.146 deraadt 689: if (sysctl(mib, 4, name, &siz, NULL, 0) == -1) {
1.74 art 690: warnx("could not read kern.intrcnt.name.%d", i);
1.87 aaron 691: return;
692: }
693:
694: mib[0] = CTL_KERN;
695: mib[1] = KERN_INTRCNT;
696: mib[2] = KERN_INTRCNT_VECTOR;
697: mib[3] = i;
698: siz = sizeof(vector);
1.146 deraadt 699: if (sysctl(mib, 4, &vector, &siz, NULL, 0) == -1) {
1.87 aaron 700: strlcpy(intrname, name, sizeof(intrname));
701: } else {
702: snprintf(intrname, sizeof(intrname), "irq%d/%s",
703: vector, name);
1.74 art 704: }
705:
706: mib[0] = CTL_KERN;
707: mib[1] = KERN_INTRCNT;
708: mib[2] = KERN_INTRCNT_CNT;
709: mib[3] = i;
710: siz = sizeof(cnt);
1.146 deraadt 711: if (sysctl(mib, 4, &cnt, &siz, NULL, 0) == -1) {
1.75 grange 712: warnx("could not read kern.intrcnt.cnt.%d", i);
1.90 deraadt 713: return;
1.74 art 714: }
1.90 deraadt 715:
1.87 aaron 716: if (cnt || zflag)
1.91 deraadt 717: (void)printf("%-16.16s %20llu %8llu\n", intrname,
1.90 deraadt 718: cnt, cnt / uptime);
1.74 art 719: inttotal += cnt;
720: }
721:
1.91 deraadt 722: (void)printf("%-16s %20llu %8llu\n", "Total", inttotal,
1.90 deraadt 723: inttotal / uptime);
1.1 deraadt 724: }
725:
726: /*
727: * These names are defined in <sys/malloc.h>.
728: */
1.101 otto 729: const char *kmemnames[] = INITKMEMNAMES;
1.1 deraadt 730:
731: void
1.72 deraadt 732: domem(void)
1.1 deraadt 733: {
1.102 deraadt 734: struct kmembuckets buckets[MINBUCKET + 16], *kp;
735: struct kmemstats kmemstats[M_LAST], *ks;
736: int i, j, len, size, first, mib[4];
1.50 art 737: u_long totuse = 0, totfree = 0;
1.102 deraadt 738: char buf[BUFSIZ], *bufp, *ap;
1.141 guenther 739: unsigned long long totreq = 0;
1.101 otto 740: const char *name;
1.50 art 741: size_t siz;
742:
743: if (memf == NULL && nlistf == NULL) {
1.53 deraadt 744: mib[0] = CTL_KERN;
1.50 art 745: mib[1] = KERN_MALLOCSTATS;
746: mib[2] = KERN_MALLOC_BUCKETS;
747: siz = sizeof(buf);
1.146 deraadt 748: if (sysctl(mib, 3, buf, &siz, NULL, 0) == -1) {
1.56 angelos 749: warnx("could not read kern.malloc.buckets");
1.50 art 750: return;
751: }
752:
753: bufp = buf;
754: mib[2] = KERN_MALLOC_BUCKET;
755: siz = sizeof(struct kmembuckets);
756: i = 0;
757: while ((ap = strsep(&bufp, ",")) != NULL) {
1.138 deraadt 758: const char *errstr;
759:
760: mib[3] = strtonum(ap, 0, INT_MAX, &errstr);
761: if (errstr) {
762: warnx("kernel lied about %d being a number", mib[3]);
763: return;
764: }
1.50 art 765:
766: if (sysctl(mib, 4, &buckets[MINBUCKET + i], &siz,
1.146 deraadt 767: NULL, 0) == -1) {
1.56 angelos 768: warn("could not read kern.malloc.bucket.%d", mib[3]);
1.50 art 769: return;
770: }
771: i++;
772: }
773: } else {
1.53 deraadt 774: kread(X_KMEMBUCKETS, buckets, sizeof(buckets));
1.50 art 775: }
1.1 deraadt 776:
1.18 kstailey 777: for (first = 1, i = MINBUCKET, kp = &buckets[i]; i < MINBUCKET + 16;
778: i++, kp++) {
1.65 art 779: if (kp->kb_calls == 0 && !verbose)
1.1 deraadt 780: continue;
1.18 kstailey 781: if (first) {
782: (void)printf("Memory statistics by bucket size\n");
783: (void)printf(
1.50 art 784: " Size In Use Free Requests HighWater Couldfree\n");
1.18 kstailey 785: first = 0;
786: }
1.1 deraadt 787: size = 1 << i;
1.60 art 788: (void)printf("%8d %8llu %6llu %18llu %7llu %10llu\n", size,
1.148 deraadt 789: (unsigned long long)(kp->kb_total - kp->kb_totalfree),
790: (unsigned long long)kp->kb_totalfree,
791: (unsigned long long)kp->kb_calls,
792: (unsigned long long)kp->kb_highwat,
793: (unsigned long long)kp->kb_couldfree);
1.1 deraadt 794: totfree += size * kp->kb_totalfree;
1.18 kstailey 795: }
796:
797: /*
798: * If kmem statistics are not being gathered by the kernel,
799: * first will still be 1.
800: */
801: if (first) {
802: printf(
803: "Kmem statistics are not being gathered by the kernel.\n");
804: return;
1.1 deraadt 805: }
806:
1.52 angelos 807: if (memf == NULL && nlistf == NULL) {
1.139 mmcc 808: memset(kmemstats, 0, sizeof(kmemstats));
1.52 angelos 809: for (i = 0; i < M_LAST; i++) {
1.53 deraadt 810: mib[0] = CTL_KERN;
1.52 angelos 811: mib[1] = KERN_MALLOCSTATS;
812: mib[2] = KERN_MALLOC_KMEMSTATS;
813: mib[3] = i;
814: siz = sizeof(struct kmemstats);
815:
1.103 deraadt 816: /*
1.52 angelos 817: * Skip errors -- these are presumed to be unallocated
818: * entries.
819: */
1.146 deraadt 820: if (sysctl(mib, 4, &kmemstats[i], &siz, NULL, 0) == -1)
1.52 angelos 821: continue;
822: }
823: } else {
824: kread(X_KMEMSTAT, kmemstats, sizeof(kmemstats));
825: }
826:
1.1 deraadt 827: (void)printf("\nMemory usage type by bucket size\n");
828: (void)printf(" Size Type(s)\n");
829: kp = &buckets[MINBUCKET];
830: for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1, kp++) {
831: if (kp->kb_calls == 0)
832: continue;
833: first = 1;
834: len = 8;
835: for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) {
836: if (ks->ks_calls == 0)
837: continue;
838: if ((ks->ks_size & j) == 0)
839: continue;
840: name = kmemnames[i] ? kmemnames[i] : "undefined";
841: len += 2 + strlen(name);
842: if (first)
843: printf("%8d %s", j, name);
844: else
845: printf(",");
846: if (len >= 80) {
847: printf("\n\t ");
848: len = 10 + strlen(name);
849: }
850: if (!first)
851: printf(" %s", name);
852: first = 0;
853: }
854: printf("\n");
855: }
856:
857: (void)printf(
1.26 deraadt 858: "\nMemory statistics by type Type Kern\n");
1.1 deraadt 859: (void)printf(
1.150 guenther 860: " Type InUse MemUse HighUse Limit Requests Limit Size(s)\n");
1.1 deraadt 861: for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) {
862: if (ks->ks_calls == 0)
863: continue;
1.150 guenther 864: (void)printf("%14s%6ld%6ldK%7ldK%6ldK%9ld%5u",
1.1 deraadt 865: kmemnames[i] ? kmemnames[i] : "undefined",
866: ks->ks_inuse, (ks->ks_memuse + 1023) / 1024,
867: (ks->ks_maxused + 1023) / 1024,
868: (ks->ks_limit + 1023) / 1024, ks->ks_calls,
1.150 guenther 869: ks->ks_limblocks);
1.1 deraadt 870: first = 1;
871: for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) {
872: if ((ks->ks_size & j) == 0)
873: continue;
874: if (first)
875: printf(" %d", j);
876: else
877: printf(",%d", j);
878: first = 0;
879: }
880: printf("\n");
881: totuse += ks->ks_memuse;
882: totreq += ks->ks_calls;
883: }
884: (void)printf("\nMemory Totals: In Use Free Requests\n");
1.141 guenther 885: (void)printf(" %7luK %6luK %8llu\n",
1.1 deraadt 886: (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq);
887: }
888:
1.54 art 889: static void
1.129 dlg 890: print_pool(struct kinfo_pool *pp, char *name)
1.54 art 891: {
892: static int first = 1;
1.102 deraadt 893: char maxp[32];
1.54 art 894: int ovflw;
895:
896: if (first) {
897: (void)printf("Memory resource pool statistics\n");
898: (void)printf(
899: "%-11s%5s%9s%5s%9s%6s%6s%6s%6s%6s%6s%5s\n",
900: "Name",
901: "Size",
902: "Requests",
903: "Fail",
1.110 otto 904: "InUse",
1.54 art 905: "Pgreq",
906: "Pgrel",
907: "Npage",
908: "Hiwat",
909: "Minpg",
910: "Maxpg",
911: "Idle");
912: first = 0;
913: }
1.65 art 914:
915: /* Skip unused pools unless verbose output. */
916: if (pp->pr_nget == 0 && !verbose)
917: return;
918:
1.54 art 919: if (pp->pr_maxpages == UINT_MAX)
1.69 deraadt 920: snprintf(maxp, sizeof maxp, "inf");
1.54 art 921: else
1.69 deraadt 922: snprintf(maxp, sizeof maxp, "%u", pp->pr_maxpages);
1.54 art 923: /*
924: * Print single word. `ovflow' is number of characters didn't fit
925: * on the last word. `fmt' is a format string to print this word.
926: * It must contain asterisk for field width. `width' is a width
927: * occupied by this word. `fixed' is a number of constant chars in
928: * `fmt'. `val' is a value to be printed using format string `fmt'.
929: */
930: #define PRWORD(ovflw, fmt, width, fixed, val) do { \
931: (ovflw) += printf((fmt), \
932: (width) - (fixed) - (ovflw) > 0 ? \
933: (width) - (fixed) - (ovflw) : 0, \
934: (val)) - (width); \
935: if ((ovflw) < 0) \
936: (ovflw) = 0; \
937: } while (/* CONSTCOND */0)
938:
939: ovflw = 0;
940: PRWORD(ovflw, "%-*s", 11, 0, name);
941: PRWORD(ovflw, " %*u", 5, 1, pp->pr_size);
942: PRWORD(ovflw, " %*lu", 9, 1, pp->pr_nget);
943: PRWORD(ovflw, " %*lu", 5, 1, pp->pr_nfail);
1.110 otto 944: PRWORD(ovflw, " %*lu", 9, 1, pp->pr_nget - pp->pr_nput);
1.54 art 945: PRWORD(ovflw, " %*lu", 6, 1, pp->pr_npagealloc);
946: PRWORD(ovflw, " %*lu", 6, 1, pp->pr_npagefree);
947: PRWORD(ovflw, " %*d", 6, 1, pp->pr_npages);
948: PRWORD(ovflw, " %*d", 6, 1, pp->pr_hiwat);
949: PRWORD(ovflw, " %*d", 6, 1, pp->pr_minpages);
950: PRWORD(ovflw, " %*s", 6, 1, maxp);
1.103 deraadt 951: PRWORD(ovflw, " %*lu\n", 5, 1, pp->pr_nidle);
1.54 art 952: }
953:
1.55 art 954: static void dopool_kvm(void);
955: static void dopool_sysctl(void);
956:
1.48 art 957: void
958: dopool(void)
959: {
1.55 art 960: if (nlistf == NULL && memf == NULL)
961: dopool_sysctl();
962: else
963: dopool_kvm();
964: }
965:
966: void
967: dopool_sysctl(void)
968: {
1.117 chl 969: int mib[4], npools, i;
1.63 art 970: long total = 0, inuse = 0;
1.129 dlg 971: struct kinfo_pool pool;
1.55 art 972: size_t size;
973:
974: mib[0] = CTL_KERN;
975: mib[1] = KERN_POOL;
976: mib[2] = KERN_POOL_NPOOLS;
977: size = sizeof(npools);
1.146 deraadt 978: if (sysctl(mib, 3, &npools, &size, NULL, 0) == -1) {
1.92 pedro 979: warn("can't figure out number of pools in kernel");
1.55 art 980: return;
981: }
982:
983: for (i = 1; npools; i++) {
984: char name[32];
985:
986: mib[0] = CTL_KERN;
987: mib[1] = KERN_POOL;
988: mib[2] = KERN_POOL_POOL;
989: mib[3] = i;
1.129 dlg 990: size = sizeof(pool);
1.146 deraadt 991: if (sysctl(mib, 4, &pool, &size, NULL, 0) == -1) {
1.55 art 992: if (errno == ENOENT)
993: continue;
1.92 pedro 994: warn("error getting pool");
1.55 art 995: return;
996: }
997: npools--;
998: mib[2] = KERN_POOL_NAME;
999: size = sizeof(name);
1.146 deraadt 1000: if (sysctl(mib, 4, &name, &size, NULL, 0) == -1) {
1.92 pedro 1001: warn("error getting pool name");
1.55 art 1002: return;
1003: }
1004: print_pool(&pool, name);
1.63 art 1005:
1006: inuse += (pool.pr_nget - pool.pr_nput) * pool.pr_size;
1.129 dlg 1007: total += pool.pr_npages * pool.pr_pgsize;
1.55 art 1008: }
1.63 art 1009:
1010: inuse /= 1024;
1011: total /= 1024;
1012: printf("\nIn use %ldK, total allocated %ldK; utilization %.1f%%\n",
1013: inuse, total, (double)(100 * inuse) / total);
1.55 art 1014: }
1015:
1016: void
1017: dopool_kvm(void)
1018: {
1.120 tedu 1019: SIMPLEQ_HEAD(,pool) pool_head;
1.48 art 1020: struct pool pool, *pp = &pool;
1.129 dlg 1021: struct kinfo_pool pi;
1.102 deraadt 1022: long total = 0, inuse = 0;
1023: u_long addr;
1.48 art 1024:
1025: kread(X_POOLHEAD, &pool_head, sizeof(pool_head));
1.120 tedu 1026: addr = (u_long)SIMPLEQ_FIRST(&pool_head);
1.48 art 1027:
1.55 art 1028: while (addr != 0) {
1.54 art 1029: char name[32];
1.56 angelos 1030:
1.48 art 1031: if (kvm_read(kd, addr, (void *)pp, sizeof *pp) != sizeof *pp) {
1032: (void)fprintf(stderr,
1033: "vmstat: pool chain trashed: %s\n",
1034: kvm_geterr(kd));
1035: exit(1);
1036: }
1.102 deraadt 1037: if (kvm_read(kd, (u_long)pp->pr_wchan, name, sizeof name) < 0) {
1.48 art 1038: (void)fprintf(stderr,
1039: "vmstat: pool name trashed: %s\n",
1040: kvm_geterr(kd));
1041: exit(1);
1042: }
1043: name[31] = '\0';
1044:
1.129 dlg 1045: memset(&pi, 0, sizeof(pi));
1046: pi.pr_size = pp->pr_size;
1.135 tedu 1047: pi.pr_pgsize = pp->pr_pgsize;
1.129 dlg 1048: pi.pr_itemsperpage = pp->pr_itemsperpage;
1.130 dlg 1049: pi.pr_npages = pp->pr_npages;
1.129 dlg 1050: pi.pr_minpages = pp->pr_minpages;
1051: pi.pr_maxpages = pp->pr_maxpages;
1052: pi.pr_hardlimit = pp->pr_hardlimit;
1053: pi.pr_nout = pp->pr_nout;
1054: pi.pr_nitems = pp->pr_nitems;
1055: pi.pr_nget = pp->pr_nget;
1056: pi.pr_nput = pp->pr_nput;
1057: pi.pr_nfail = pp->pr_nfail;
1058: pi.pr_npagealloc = pp->pr_npagealloc;
1059: pi.pr_npagefree = pp->pr_npagefree;
1060: pi.pr_hiwat = pp->pr_hiwat;
1061: pi.pr_nidle = pp->pr_nidle;
1062:
1063: print_pool(&pi, name);
1.48 art 1064:
1.129 dlg 1065: inuse += (pi.pr_nget - pi.pr_nput) * pi.pr_size;
1066: total += pi.pr_npages * pi.pr_pgsize;
1.56 angelos 1067:
1.120 tedu 1068: addr = (u_long)SIMPLEQ_NEXT(pp, pr_poollist);
1.48 art 1069: }
1070:
1071: inuse /= 1024;
1072: total /= 1024;
1073: printf("\nIn use %ldK, total allocated %ldK; utilization %.1f%%\n",
1074: inuse, total, (double)(100 * inuse) / total);
1075: }
1076:
1.1 deraadt 1077: /*
1078: * kread reads something from the kernel, given its nlist index.
1079: */
1080: void
1.72 deraadt 1081: kread(int nlx, void *addr, size_t size)
1.1 deraadt 1082: {
1083: char *sym;
1084:
1085: if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) {
1086: sym = namelist[nlx].n_name;
1087: if (*sym == '_')
1088: ++sym;
1.50 art 1089: errx(1, "symbol %s not defined", sym);
1.1 deraadt 1090: }
1091: if (kvm_read(kd, namelist[nlx].n_value, addr, size) != size) {
1092: sym = namelist[nlx].n_name;
1093: if (*sym == '_')
1094: ++sym;
1.50 art 1095: errx(1, "%s: %s", sym, kvm_geterr(kd));
1.1 deraadt 1096: }
1097: }
1098:
1099: void
1.72 deraadt 1100: usage(void)
1.1 deraadt 1101: {
1.88 jmc 1102: (void)fprintf(stderr, "usage: %s [-fimstvz] [-c count] [-M core] "
1.109 sobrado 1103: "[-N system] [-w wait] [disk ...]\n", __progname);
1.1 deraadt 1104: exit(1);
1105: }
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