Annotation of src/usr.bin/vmstat/vmstat.c, Revision 1.141
1.11 deraadt 1: /* $NetBSD: vmstat.c,v 1.29.4.1 1996/06/05 00:21:05 cgd Exp $ */
1.141 ! guenther 2: /* $OpenBSD: vmstat.c,v 1.140 2016/07/27 14:44:59 tedu 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:
1.136 deraadt 33: #include <sys/param.h> /* MAXCOMLEN */
1.1 deraadt 34: #include <sys/time.h>
35: #include <sys/proc.h>
36: #include <sys/namei.h>
37: #include <sys/malloc.h>
38: #include <sys/fcntl.h>
39: #include <sys/ioctl.h>
40: #include <sys/sysctl.h>
41: #include <sys/device.h>
1.48 art 42: #include <sys/pool.h>
1.133 miod 43: #include <sys/sched.h>
1.128 mpi 44: #include <sys/vmmeter.h>
45:
1.1 deraadt 46: #include <time.h>
47: #include <nlist.h>
48: #include <kvm.h>
1.21 millert 49: #include <err.h>
1.1 deraadt 50: #include <errno.h>
51: #include <unistd.h>
52: #include <signal.h>
53: #include <stdio.h>
54: #include <ctype.h>
55: #include <stdlib.h>
56: #include <string.h>
57: #include <paths.h>
58: #include <limits.h>
1.6 tholo 59: #include "dkstats.h"
1.29 art 60:
1.1 deraadt 61: struct nlist namelist[] = {
1.70 deraadt 62: #define X_UVMEXP 0 /* sysctl */
1.29 art 63: { "_uvmexp" },
1.124 guenther 64: #define X_TIME_UPTIME 1
65: { "_time_uptime" },
1.70 deraadt 66: #define X_NCHSTATS 2 /* sysctl */
1.1 deraadt 67: { "_nchstats" },
1.70 deraadt 68: #define X_KMEMSTAT 3 /* sysctl */
69: { "_kmemstats" },
70: #define X_KMEMBUCKETS 4 /* sysctl */
71: { "_bucket" },
72: #define X_FORKSTAT 5 /* sysctl */
73: { "_forkstat" },
74: #define X_NSELCOLL 6 /* sysctl */
75: { "_nselcoll" },
76: #define X_POOLHEAD 7 /* sysctl */
77: { "_pool_head" },
1.124 guenther 78: #define X_NAPTIME 8
79: { "_naptime" },
1.1 deraadt 80: { "" },
81: };
82:
1.6 tholo 83: /* Objects defined in dkstats.c */
1.73 tdeval 84: extern struct _disk cur, last;
1.10 deraadt 85: extern char **dr_name;
86: extern int *dk_select, dk_ndrive;
1.1 deraadt 87:
1.29 art 88: struct uvmexp uvmexp, ouvmexp;
1.6 tholo 89: int ndrives;
1.1 deraadt 90:
91: int winlines = 20;
92:
93: kvm_t *kd;
94:
95: #define FORKSTAT 0x01
96: #define INTRSTAT 0x02
97: #define MEMSTAT 0x04
98: #define SUMSTAT 0x08
99: #define TIMESTAT 0x10
100: #define VMSTAT 0x20
101:
1.66 millert 102: void cpustats(void);
1.101 otto 103: time_t getuptime(void);
1.66 millert 104: void dkstats(void);
105: void dointr(void);
106: void domem(void);
107: void dopool(void);
108: void dosum(void);
109: void dovmstat(u_int, int);
110: void kread(int, void *, size_t);
111: void usage(void);
112: void dotimes(void);
113: void doforkst(void);
1.101 otto 114: void needhdr(int);
1.112 naddy 115: int pct(int64_t, int64_t);
1.66 millert 116: void printhdr(void);
1.1 deraadt 117:
1.66 millert 118: char **choosedrives(char **);
1.10 deraadt 119:
120: /* Namelist and memory file names. */
121: char *nlistf, *memf;
1.6 tholo 122:
1.50 art 123: extern char *__progname;
124:
1.65 art 125: int verbose = 0;
1.87 aaron 126: int zflag = 0;
1.65 art 127:
1.21 millert 128: int
1.72 deraadt 129: main(int argc, char *argv[])
1.1 deraadt 130: {
1.102 deraadt 131: char errbuf[_POSIX2_LINE_MAX];
1.126 chl 132: int c, todo = 0, reps = 0;
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: case '?':
176: default:
177: usage();
178: }
179: }
180: argc -= optind;
181: argv += optind;
182:
183: if (todo == 0)
184: todo = VMSTAT;
185:
1.56 angelos 186: if (nlistf != NULL || memf != NULL) {
187:
188: kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
189: if (kd == 0)
190: errx(1, "kvm_openfiles: %s", errbuf);
191:
192: if ((c = kvm_nlist(kd, namelist)) != 0) {
193:
194: if (c > 0) {
195: (void)fprintf(stderr,
196: "%s: undefined symbols:", __progname);
197: for (c = 0;
198: c < sizeof(namelist)/sizeof(namelist[0]);
199: c++)
200: if (namelist[c].n_type == 0)
201: fprintf(stderr, " %s",
202: namelist[c].n_name);
203: (void)fputc('\n', stderr);
204: exit(1);
205: } else
206: errx(1, "kvm_nlist: %s", kvm_geterr(kd));
207: }
1.115 lum 208: }
1.1 deraadt 209:
210: if (todo & VMSTAT) {
211: struct winsize winsize;
212:
1.6 tholo 213: dkinit(0); /* Initialize disk stats, no disks selected. */
214: argv = choosedrives(argv); /* Select disks. */
1.1 deraadt 215: winsize.ws_row = 0;
1.102 deraadt 216: (void) ioctl(STDOUT_FILENO, TIOCGWINSZ, &winsize);
1.1 deraadt 217: if (winsize.ws_row > 0)
218: winlines = winsize.ws_row;
219:
220: }
1.25 deraadt 221:
1.1 deraadt 222: #define BACKWARD_COMPATIBILITY
223: #ifdef BACKWARD_COMPATIBILITY
224: if (*argv) {
1.102 deraadt 225: interval = (u_int)strtonum(*argv, 0, 1000, &errstr);
226: if (errstr)
1.137 tedu 227: errx(1, "interval %s: %s", *argv, errstr);
1.103 deraadt 228:
1.137 tedu 229: if (*++argv) {
230: reps = strtonum(*argv, 0, INT_MAX, &errstr);
231: if (errstr)
232: errx(1, "reps %s: %s", *argv, errstr);
233: }
1.1 deraadt 234: }
235: #endif
236:
237: if (interval) {
238: if (!reps)
239: reps = -1;
240: } else if (reps)
241: interval = 1;
242:
243: if (todo & FORKSTAT)
244: doforkst();
1.48 art 245: if (todo & MEMSTAT) {
1.1 deraadt 246: domem();
1.48 art 247: dopool();
248: }
1.1 deraadt 249: if (todo & SUMSTAT)
250: dosum();
251: if (todo & TIMESTAT)
252: dotimes();
253: if (todo & INTRSTAT)
254: dointr();
255: if (todo & VMSTAT)
256: dovmstat(interval, reps);
257: exit(0);
258: }
259:
260: char **
1.72 deraadt 261: choosedrives(char **argv)
1.1 deraadt 262: {
1.62 mpech 263: int i;
1.1 deraadt 264:
265: /*
266: * Choose drives to be displayed. Priority goes to (in order) drives
267: * supplied as arguments, default drives. If everything isn't filled
268: * in and there are drives not taken care of, display the first few
269: * that fit.
270: */
271: #define BACKWARD_COMPATIBILITY
272: for (ndrives = 0; *argv; ++argv) {
273: #ifdef BACKWARD_COMPATIBILITY
1.127 deraadt 274: if (isdigit((unsigned char)**argv))
1.1 deraadt 275: break;
276: #endif
277: for (i = 0; i < dk_ndrive; i++) {
278: if (strcmp(dr_name[i], *argv))
279: continue;
1.6 tholo 280: dk_select[i] = 1;
1.1 deraadt 281: ++ndrives;
282: break;
283: }
1.137 tedu 284: if (i == dk_ndrive)
285: errx(1, "invalid interval or drive name: %s", *argv);
1.1 deraadt 286: }
1.64 deraadt 287: for (i = 0; i < dk_ndrive && ndrives < 2; i++) {
1.6 tholo 288: if (dk_select[i])
1.1 deraadt 289: continue;
1.6 tholo 290: dk_select[i] = 1;
1.1 deraadt 291: ++ndrives;
292: }
293: return(argv);
294: }
295:
1.19 deraadt 296: time_t
1.72 deraadt 297: getuptime(void)
1.1 deraadt 298: {
1.124 guenther 299: struct timespec uptime;
300: time_t time_uptime, naptime;
1.1 deraadt 301:
1.124 guenther 302: if (nlistf == NULL && memf == NULL) {
303: if (clock_gettime(CLOCK_UPTIME, &uptime) == -1)
304: err(1, "clock_gettime");
305: return (uptime.tv_sec);
1.50 art 306: }
307:
1.124 guenther 308: kread(X_NAPTIME, &naptime, sizeof(naptime));
309: kread(X_TIME_UPTIME, &time_uptime, sizeof(time_uptime));
310: return (time_uptime - naptime);
1.1 deraadt 311: }
312:
1.105 cloder 313: int hz;
314: volatile sig_atomic_t hdrcnt;
1.1 deraadt 315:
316: void
1.72 deraadt 317: dovmstat(u_int interval, int reps)
1.1 deraadt 318: {
319: time_t uptime, halfuptime;
1.50 art 320: struct clockinfo clkinfo;
1.102 deraadt 321: struct vmtotal total;
1.1 deraadt 322: size_t size;
1.102 deraadt 323: int mib[2];
1.1 deraadt 324:
325: uptime = getuptime();
326: halfuptime = uptime / 2;
327: (void)signal(SIGCONT, needhdr);
328:
1.50 art 329: mib[0] = CTL_KERN;
330: mib[1] = KERN_CLOCKRATE;
331: size = sizeof(clkinfo);
332: if (sysctl(mib, 2, &clkinfo, &size, NULL, 0) < 0) {
1.56 angelos 333: warn("could not read kern.clockrate");
1.50 art 334: return;
335: }
336: hz = clkinfo.stathz;
1.1 deraadt 337:
338: for (hdrcnt = 1;;) {
1.6 tholo 339: /* Read new disk statistics */
340: dkreadstats();
1.73 tdeval 341: if (!--hdrcnt || last.dk_ndrive != cur.dk_ndrive)
342: printhdr();
1.56 angelos 343: if (nlistf == NULL && memf == NULL) {
344: size = sizeof(struct uvmexp);
1.52 angelos 345: mib[0] = CTL_VM;
346: mib[1] = VM_UVMEXP;
347: if (sysctl(mib, 2, &uvmexp, &size, NULL, 0) < 0) {
1.56 angelos 348: warn("could not get vm.uvmexp");
1.139 mmcc 349: memset(&uvmexp, 0, sizeof(struct uvmexp));
1.52 angelos 350: }
1.56 angelos 351: } else {
352: kread(X_UVMEXP, &uvmexp, sizeof(struct uvmexp));
1.52 angelos 353: }
1.1 deraadt 354: size = sizeof(total);
355: mib[0] = CTL_VM;
356: mib[1] = VM_METER;
357: if (sysctl(mib, 2, &total, &size, NULL, 0) < 0) {
1.56 angelos 358: warn("could not read vm.vmmeter");
1.139 mmcc 359: memset(&total, 0, sizeof(total));
1.1 deraadt 360: }
1.114 tedu 361: (void)printf(" %u %u %u ",
1.1 deraadt 362: total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw);
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))
1.114 tedu 365: (void)printf("%6u %7u ",
1.128 mpi 366: pgtok(uvmexp.active + uvmexp.swpginuse),
367: pgtok(uvmexp.free));
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:
1.106 sobrado 413: (void)printf(" r b w 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;
449: if (sysctl(mib, 2, &uvmexp, &size, NULL, 0) < 0) {
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;
1.102 deraadt 485: int mib[2], nselcoll;
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;
493: if (sysctl(mib, 2, &uvmexp, &size, NULL, 0) < 0) {
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);
1.32 art 516:
517: /* swap */
1.35 hugh 518: (void)printf("%11u swap pages\n", uvmexp.swpages);
519: (void)printf("%11u swap pages in use\n", uvmexp.swpginuse);
520: (void)printf("%11u total anon's in system\n", uvmexp.nanon);
521: (void)printf("%11u free anon's\n", uvmexp.nfreeanon);
1.32 art 522:
523: /* stat counters */
1.35 hugh 524: (void)printf("%11u page faults\n", uvmexp.faults);
525: (void)printf("%11u traps\n", uvmexp.traps);
526: (void)printf("%11u interrupts\n", uvmexp.intrs);
527: (void)printf("%11u cpu context switches\n", uvmexp.swtch);
1.95 mickey 528: (void)printf("%11u fpu context switches\n", uvmexp.fpswtch);
1.35 hugh 529: (void)printf("%11u software interrupts\n", uvmexp.softs);
530: (void)printf("%11u syscalls\n", uvmexp.syscalls);
531: (void)printf("%11u pagein operations\n", uvmexp.pageins);
532: (void)printf("%11u forks\n", uvmexp.forks);
533: (void)printf("%11u forks where vmspace is shared\n",
1.48 art 534: uvmexp.forks_sharevm);
1.97 pedro 535: (void)printf("%11u kernel map entries\n", uvmexp.kmapent);
1.132 kettenis 536: (void)printf("%11u zeroed page hits\n", uvmexp.pga_zerohit);
537: (void)printf("%11u zeroed page misses\n", uvmexp.pga_zeromiss);
1.32 art 538:
539: /* daemon counters */
1.64 deraadt 540: (void)printf("%11u number of times the pagedaemon woke up\n",
1.48 art 541: uvmexp.pdwoke);
1.35 hugh 542: (void)printf("%11u revolutions of the clock hand\n", uvmexp.pdrevs);
543: (void)printf("%11u pages freed by pagedaemon\n", uvmexp.pdfreed);
544: (void)printf("%11u pages scanned by pagedaemon\n", uvmexp.pdscans);
545: (void)printf("%11u pages reactivated by pagedaemon\n", uvmexp.pdreact);
546: (void)printf("%11u busy pages found by pagedaemon\n", uvmexp.pdbusy);
1.29 art 547:
1.56 angelos 548: if (nlistf == NULL && memf == NULL) {
1.52 angelos 549: size = sizeof(nchstats);
550: mib[0] = CTL_KERN;
551: mib[1] = KERN_NCHSTATS;
552: if (sysctl(mib, 2, &nchstats, &size, NULL, 0) < 0) {
1.56 angelos 553: warn("could not read kern.nchstats");
1.139 mmcc 554: memset(&nchstats, 0, sizeof(nchstats));
1.52 angelos 555: }
1.56 angelos 556: } else {
557: kread(X_NCHSTATS, &nchstats, sizeof(nchstats));
1.52 angelos 558: }
559:
1.1 deraadt 560: nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits +
561: nchstats.ncs_badhits + nchstats.ncs_falsehits +
562: nchstats.ncs_miss + nchstats.ncs_long;
1.112 naddy 563: (void)printf("%11lld total name lookups\n", nchtotal);
1.52 angelos 564: (void)printf("%11s cache hits (%d%% pos + %d%% neg) system %d%% "
565: "per-directory\n",
1.112 naddy 566: "", pct(nchstats.ncs_goodhits, nchtotal),
567: pct(nchstats.ncs_neghits, nchtotal),
568: pct(nchstats.ncs_pass2, nchtotal));
1.35 hugh 569: (void)printf("%11s deletions %d%%, falsehits %d%%, toolong %d%%\n", "",
1.112 naddy 570: pct(nchstats.ncs_badhits, nchtotal),
571: pct(nchstats.ncs_falsehits, nchtotal),
572: pct(nchstats.ncs_long, nchtotal));
1.52 angelos 573:
1.56 angelos 574: if (nlistf == NULL && memf == NULL) {
1.52 angelos 575: size = sizeof(nselcoll);
576: mib[0] = CTL_KERN;
577: mib[1] = KERN_NSELCOLL;
578: if (sysctl(mib, 2, &nselcoll, &size, NULL, 0) < 0) {
1.56 angelos 579: warn("could not read kern.nselcoll");
1.52 angelos 580: nselcoll = 0;
581: }
1.56 angelos 582: } else {
583: kread(X_NSELCOLL, &nselcoll, sizeof(nselcoll));
1.52 angelos 584: }
1.50 art 585: (void)printf("%11d select collisions\n", nselcoll);
1.1 deraadt 586: }
587:
588: void
1.72 deraadt 589: doforkst(void)
1.1 deraadt 590: {
591: struct forkstat fks;
1.52 angelos 592: size_t size;
593: int mib[2];
594:
1.56 angelos 595: if (nlistf == NULL && memf == NULL) {
1.52 angelos 596: size = sizeof(struct forkstat);
597: mib[0] = CTL_KERN;
598: mib[1] = KERN_FORKSTAT;
599: if (sysctl(mib, 2, &fks, &size, NULL, 0) < 0) {
1.56 angelos 600: warn("could not read kern.forkstat");
1.139 mmcc 601: memset(&fks, 0, sizeof(struct forkstat));
1.52 angelos 602: }
1.56 angelos 603: } else {
604: kread(X_FORKSTAT, &fks, sizeof(struct forkstat));
1.52 angelos 605: }
1.1 deraadt 606:
1.140 tedu 607: (void)printf("%u forks, %llu pages, average %.2f\n",
1.1 deraadt 608: fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork);
1.140 tedu 609: (void)printf("%u vforks, %llu pages, average %.2f\n",
1.72 deraadt 610: fks.cntvfork, fks.sizvfork,
611: (double)fks.sizvfork / (fks.cntvfork ? fks.cntvfork : 1));
1.140 tedu 612: (void)printf("%u __tforks, %llu pages, average %.2f\n",
1.119 deraadt 613: fks.cnttfork, fks.siztfork,
614: (double)fks.siztfork / (fks.cnttfork ? fks.cnttfork : 1));
1.140 tedu 615: (void)printf("%u kthread creations, %llu pages, average %.2f\n",
1.72 deraadt 616: fks.cntkthread, fks.sizkthread,
617: (double)fks.sizkthread / (fks.cntkthread ? fks.cntkthread : 1));
1.1 deraadt 618: }
619:
620: void
1.72 deraadt 621: dkstats(void)
1.1 deraadt 622: {
1.62 mpech 623: int dn, state;
1.1 deraadt 624: double etime;
625:
1.6 tholo 626: /* Calculate disk stat deltas. */
627: dkswap();
1.1 deraadt 628: etime = 0;
629: for (state = 0; state < CPUSTATES; ++state) {
1.6 tholo 630: etime += cur.cp_time[state];
1.1 deraadt 631: }
632: if (etime == 0)
633: etime = 1;
634: etime /= hz;
635: for (dn = 0; dn < dk_ndrive; ++dn) {
1.6 tholo 636: if (!dk_select[dn])
1.1 deraadt 637: continue;
1.82 tedu 638: (void)printf("%3.0f ",
639: (cur.dk_rxfer[dn] + cur.dk_rxfer[dn]) / etime);
1.1 deraadt 640: }
641: }
642:
643: void
1.72 deraadt 644: cpustats(void)
1.1 deraadt 645: {
1.102 deraadt 646: double percent, total;
1.62 mpech 647: int state;
1.1 deraadt 648:
649: total = 0;
650: for (state = 0; state < CPUSTATES; ++state)
1.6 tholo 651: total += cur.cp_time[state];
1.1 deraadt 652: if (total)
1.101 otto 653: percent = 100 / total;
1.1 deraadt 654: else
1.101 otto 655: percent = 0;
656: (void)printf("%2.0f ", (cur.cp_time[CP_USER] + cur.cp_time[CP_NICE]) * percent);
657: (void)printf("%2.0f ", (cur.cp_time[CP_SYS] + cur.cp_time[CP_INTR]) * percent);
658: (void)printf("%2.0f", cur.cp_time[CP_IDLE] * percent);
1.1 deraadt 659: }
660:
661: void
1.72 deraadt 662: dointr(void)
1.74 art 663: {
1.102 deraadt 664: int nintr, mib[4], i;
665: char intrname[128];
666: u_int64_t inttotal;
1.74 art 667: time_t uptime;
668: size_t siz;
669:
1.93 miod 670: if (nlistf != NULL || memf != NULL) {
671: errx(1,
672: "interrupt statistics are only available on live kernels");
673: }
674:
1.74 art 675: uptime = getuptime();
676:
677: mib[0] = CTL_KERN;
678: mib[1] = KERN_INTRCNT;
679: mib[2] = KERN_INTRCNT_NUM;
680: siz = sizeof(nintr);
681: if (sysctl(mib, 3, &nintr, &siz, NULL, 0) < 0) {
682: warnx("could not read kern.intrcnt.nintrcnt");
683: return;
684: }
685:
1.91 deraadt 686: (void)printf("%-16s %20s %8s\n", "interrupt", "total", "rate");
1.87 aaron 687:
1.74 art 688: inttotal = 0;
689: for (i = 0; i < nintr; i++) {
1.87 aaron 690: char name[128];
1.141 ! guenther 691: uint64_t cnt;
1.87 aaron 692: int vector;
1.74 art 693:
694: mib[0] = CTL_KERN;
695: mib[1] = KERN_INTRCNT;
696: mib[2] = KERN_INTRCNT_NAME;
697: mib[3] = i;
1.87 aaron 698: siz = sizeof(name);
699: if (sysctl(mib, 4, name, &siz, NULL, 0) < 0) {
1.74 art 700: warnx("could not read kern.intrcnt.name.%d", i);
1.87 aaron 701: return;
702: }
703:
704: mib[0] = CTL_KERN;
705: mib[1] = KERN_INTRCNT;
706: mib[2] = KERN_INTRCNT_VECTOR;
707: mib[3] = i;
708: siz = sizeof(vector);
709: if (sysctl(mib, 4, &vector, &siz, NULL, 0) < 0) {
710: strlcpy(intrname, name, sizeof(intrname));
711: } else {
712: snprintf(intrname, sizeof(intrname), "irq%d/%s",
713: vector, name);
1.74 art 714: }
715:
716: mib[0] = CTL_KERN;
717: mib[1] = KERN_INTRCNT;
718: mib[2] = KERN_INTRCNT_CNT;
719: mib[3] = i;
720: siz = sizeof(cnt);
721: if (sysctl(mib, 4, &cnt, &siz, NULL, 0) < 0) {
1.75 grange 722: warnx("could not read kern.intrcnt.cnt.%d", i);
1.90 deraadt 723: return;
1.74 art 724: }
1.90 deraadt 725:
1.87 aaron 726: if (cnt || zflag)
1.91 deraadt 727: (void)printf("%-16.16s %20llu %8llu\n", intrname,
1.90 deraadt 728: cnt, cnt / uptime);
1.74 art 729: inttotal += cnt;
730: }
731:
1.91 deraadt 732: (void)printf("%-16s %20llu %8llu\n", "Total", inttotal,
1.90 deraadt 733: inttotal / uptime);
1.1 deraadt 734: }
735:
736: /*
737: * These names are defined in <sys/malloc.h>.
738: */
1.101 otto 739: const char *kmemnames[] = INITKMEMNAMES;
1.1 deraadt 740:
741: void
1.72 deraadt 742: domem(void)
1.1 deraadt 743: {
1.102 deraadt 744: struct kmembuckets buckets[MINBUCKET + 16], *kp;
745: struct kmemstats kmemstats[M_LAST], *ks;
746: int i, j, len, size, first, mib[4];
1.50 art 747: u_long totuse = 0, totfree = 0;
1.102 deraadt 748: char buf[BUFSIZ], *bufp, *ap;
1.141 ! guenther 749: unsigned long long totreq = 0;
1.101 otto 750: const char *name;
1.50 art 751: size_t siz;
752:
753: if (memf == NULL && nlistf == NULL) {
1.53 deraadt 754: mib[0] = CTL_KERN;
1.50 art 755: mib[1] = KERN_MALLOCSTATS;
756: mib[2] = KERN_MALLOC_BUCKETS;
757: siz = sizeof(buf);
758: if (sysctl(mib, 3, buf, &siz, NULL, 0) < 0) {
1.56 angelos 759: warnx("could not read kern.malloc.buckets");
1.50 art 760: return;
761: }
762:
763: bufp = buf;
764: mib[2] = KERN_MALLOC_BUCKET;
765: siz = sizeof(struct kmembuckets);
766: i = 0;
767: while ((ap = strsep(&bufp, ",")) != NULL) {
1.138 deraadt 768: const char *errstr;
769:
770: mib[3] = strtonum(ap, 0, INT_MAX, &errstr);
771: if (errstr) {
772: warnx("kernel lied about %d being a number", mib[3]);
773: return;
774: }
1.50 art 775:
776: if (sysctl(mib, 4, &buckets[MINBUCKET + i], &siz,
1.53 deraadt 777: NULL, 0) < 0) {
1.56 angelos 778: warn("could not read kern.malloc.bucket.%d", mib[3]);
1.50 art 779: return;
780: }
781: i++;
782: }
783: } else {
1.53 deraadt 784: kread(X_KMEMBUCKETS, buckets, sizeof(buckets));
1.50 art 785: }
1.1 deraadt 786:
1.18 kstailey 787: for (first = 1, i = MINBUCKET, kp = &buckets[i]; i < MINBUCKET + 16;
788: i++, kp++) {
1.65 art 789: if (kp->kb_calls == 0 && !verbose)
1.1 deraadt 790: continue;
1.18 kstailey 791: if (first) {
792: (void)printf("Memory statistics by bucket size\n");
793: (void)printf(
1.50 art 794: " Size In Use Free Requests HighWater Couldfree\n");
1.18 kstailey 795: first = 0;
796: }
1.1 deraadt 797: size = 1 << i;
1.60 art 798: (void)printf("%8d %8llu %6llu %18llu %7llu %10llu\n", size,
799: (unsigned long long)(kp->kb_total - kp->kb_totalfree),
800: (unsigned long long)kp->kb_totalfree,
801: (unsigned long long)kp->kb_calls,
802: (unsigned long long)kp->kb_highwat,
803: (unsigned long long)kp->kb_couldfree);
1.1 deraadt 804: totfree += size * kp->kb_totalfree;
1.18 kstailey 805: }
806:
807: /*
808: * If kmem statistics are not being gathered by the kernel,
809: * first will still be 1.
810: */
811: if (first) {
812: printf(
813: "Kmem statistics are not being gathered by the kernel.\n");
814: return;
1.1 deraadt 815: }
816:
1.52 angelos 817: if (memf == NULL && nlistf == NULL) {
1.139 mmcc 818: memset(kmemstats, 0, sizeof(kmemstats));
1.52 angelos 819: for (i = 0; i < M_LAST; i++) {
1.53 deraadt 820: mib[0] = CTL_KERN;
1.52 angelos 821: mib[1] = KERN_MALLOCSTATS;
822: mib[2] = KERN_MALLOC_KMEMSTATS;
823: mib[3] = i;
824: siz = sizeof(struct kmemstats);
825:
1.103 deraadt 826: /*
1.52 angelos 827: * Skip errors -- these are presumed to be unallocated
828: * entries.
829: */
830: if (sysctl(mib, 4, &kmemstats[i], &siz, NULL, 0) < 0)
831: continue;
832: }
833: } else {
834: kread(X_KMEMSTAT, kmemstats, sizeof(kmemstats));
835: }
836:
1.1 deraadt 837: (void)printf("\nMemory usage type by bucket size\n");
838: (void)printf(" Size Type(s)\n");
839: kp = &buckets[MINBUCKET];
840: for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1, kp++) {
841: if (kp->kb_calls == 0)
842: continue;
843: first = 1;
844: len = 8;
845: for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) {
846: if (ks->ks_calls == 0)
847: continue;
848: if ((ks->ks_size & j) == 0)
849: continue;
850: name = kmemnames[i] ? kmemnames[i] : "undefined";
851: len += 2 + strlen(name);
852: if (first)
853: printf("%8d %s", j, name);
854: else
855: printf(",");
856: if (len >= 80) {
857: printf("\n\t ");
858: len = 10 + strlen(name);
859: }
860: if (!first)
861: printf(" %s", name);
862: first = 0;
863: }
864: printf("\n");
865: }
866:
867: (void)printf(
1.26 deraadt 868: "\nMemory statistics by type Type Kern\n");
1.1 deraadt 869: (void)printf(
1.26 deraadt 870: " Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)\n");
1.1 deraadt 871: for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) {
872: if (ks->ks_calls == 0)
873: continue;
1.24 mickey 874: (void)printf("%14s%6ld%6ldK%7ldK%6ldK%9ld%5u%6u",
1.1 deraadt 875: kmemnames[i] ? kmemnames[i] : "undefined",
876: ks->ks_inuse, (ks->ks_memuse + 1023) / 1024,
877: (ks->ks_maxused + 1023) / 1024,
878: (ks->ks_limit + 1023) / 1024, ks->ks_calls,
879: ks->ks_limblocks, ks->ks_mapblocks);
880: first = 1;
881: for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) {
882: if ((ks->ks_size & j) == 0)
883: continue;
884: if (first)
885: printf(" %d", j);
886: else
887: printf(",%d", j);
888: first = 0;
889: }
890: printf("\n");
891: totuse += ks->ks_memuse;
892: totreq += ks->ks_calls;
893: }
894: (void)printf("\nMemory Totals: In Use Free Requests\n");
1.141 ! guenther 895: (void)printf(" %7luK %6luK %8llu\n",
1.1 deraadt 896: (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq);
897: }
898:
1.54 art 899: static void
1.129 dlg 900: print_pool(struct kinfo_pool *pp, char *name)
1.54 art 901: {
902: static int first = 1;
1.102 deraadt 903: char maxp[32];
1.54 art 904: int ovflw;
905:
906: if (first) {
907: (void)printf("Memory resource pool statistics\n");
908: (void)printf(
909: "%-11s%5s%9s%5s%9s%6s%6s%6s%6s%6s%6s%5s\n",
910: "Name",
911: "Size",
912: "Requests",
913: "Fail",
1.110 otto 914: "InUse",
1.54 art 915: "Pgreq",
916: "Pgrel",
917: "Npage",
918: "Hiwat",
919: "Minpg",
920: "Maxpg",
921: "Idle");
922: first = 0;
923: }
1.65 art 924:
925: /* Skip unused pools unless verbose output. */
926: if (pp->pr_nget == 0 && !verbose)
927: return;
928:
1.54 art 929: if (pp->pr_maxpages == UINT_MAX)
1.69 deraadt 930: snprintf(maxp, sizeof maxp, "inf");
1.54 art 931: else
1.69 deraadt 932: snprintf(maxp, sizeof maxp, "%u", pp->pr_maxpages);
1.54 art 933: /*
934: * Print single word. `ovflow' is number of characters didn't fit
935: * on the last word. `fmt' is a format string to print this word.
936: * It must contain asterisk for field width. `width' is a width
937: * occupied by this word. `fixed' is a number of constant chars in
938: * `fmt'. `val' is a value to be printed using format string `fmt'.
939: */
940: #define PRWORD(ovflw, fmt, width, fixed, val) do { \
941: (ovflw) += printf((fmt), \
942: (width) - (fixed) - (ovflw) > 0 ? \
943: (width) - (fixed) - (ovflw) : 0, \
944: (val)) - (width); \
945: if ((ovflw) < 0) \
946: (ovflw) = 0; \
947: } while (/* CONSTCOND */0)
948:
949: ovflw = 0;
950: PRWORD(ovflw, "%-*s", 11, 0, name);
951: PRWORD(ovflw, " %*u", 5, 1, pp->pr_size);
952: PRWORD(ovflw, " %*lu", 9, 1, pp->pr_nget);
953: PRWORD(ovflw, " %*lu", 5, 1, pp->pr_nfail);
1.110 otto 954: PRWORD(ovflw, " %*lu", 9, 1, pp->pr_nget - pp->pr_nput);
1.54 art 955: PRWORD(ovflw, " %*lu", 6, 1, pp->pr_npagealloc);
956: PRWORD(ovflw, " %*lu", 6, 1, pp->pr_npagefree);
957: PRWORD(ovflw, " %*d", 6, 1, pp->pr_npages);
958: PRWORD(ovflw, " %*d", 6, 1, pp->pr_hiwat);
959: PRWORD(ovflw, " %*d", 6, 1, pp->pr_minpages);
960: PRWORD(ovflw, " %*s", 6, 1, maxp);
1.103 deraadt 961: PRWORD(ovflw, " %*lu\n", 5, 1, pp->pr_nidle);
1.54 art 962: }
963:
1.55 art 964: static void dopool_kvm(void);
965: static void dopool_sysctl(void);
966:
1.48 art 967: void
968: dopool(void)
969: {
1.55 art 970: if (nlistf == NULL && memf == NULL)
971: dopool_sysctl();
972: else
973: dopool_kvm();
974: }
975:
976: void
977: dopool_sysctl(void)
978: {
1.117 chl 979: int mib[4], npools, i;
1.63 art 980: long total = 0, inuse = 0;
1.129 dlg 981: struct kinfo_pool pool;
1.55 art 982: size_t size;
983:
984: mib[0] = CTL_KERN;
985: mib[1] = KERN_POOL;
986: mib[2] = KERN_POOL_NPOOLS;
987: size = sizeof(npools);
988: if (sysctl(mib, 3, &npools, &size, NULL, 0) < 0) {
1.92 pedro 989: warn("can't figure out number of pools in kernel");
1.55 art 990: return;
991: }
992:
993: for (i = 1; npools; i++) {
994: char name[32];
995:
996: mib[0] = CTL_KERN;
997: mib[1] = KERN_POOL;
998: mib[2] = KERN_POOL_POOL;
999: mib[3] = i;
1.129 dlg 1000: size = sizeof(pool);
1.55 art 1001: if (sysctl(mib, 4, &pool, &size, NULL, 0) < 0) {
1002: if (errno == ENOENT)
1003: continue;
1.92 pedro 1004: warn("error getting pool");
1.55 art 1005: return;
1006: }
1007: npools--;
1008: mib[2] = KERN_POOL_NAME;
1009: size = sizeof(name);
1010: if (sysctl(mib, 4, &name, &size, NULL, 0) < 0) {
1.92 pedro 1011: warn("error getting pool name");
1.55 art 1012: return;
1013: }
1014: print_pool(&pool, name);
1.63 art 1015:
1016: inuse += (pool.pr_nget - pool.pr_nput) * pool.pr_size;
1.129 dlg 1017: total += pool.pr_npages * pool.pr_pgsize;
1.55 art 1018: }
1.63 art 1019:
1020: inuse /= 1024;
1021: total /= 1024;
1022: printf("\nIn use %ldK, total allocated %ldK; utilization %.1f%%\n",
1023: inuse, total, (double)(100 * inuse) / total);
1.55 art 1024: }
1025:
1026: void
1027: dopool_kvm(void)
1028: {
1.120 tedu 1029: SIMPLEQ_HEAD(,pool) pool_head;
1.48 art 1030: struct pool pool, *pp = &pool;
1.129 dlg 1031: struct kinfo_pool pi;
1.102 deraadt 1032: long total = 0, inuse = 0;
1033: u_long addr;
1.48 art 1034:
1035: kread(X_POOLHEAD, &pool_head, sizeof(pool_head));
1.120 tedu 1036: addr = (u_long)SIMPLEQ_FIRST(&pool_head);
1.48 art 1037:
1.55 art 1038: while (addr != 0) {
1.54 art 1039: char name[32];
1.56 angelos 1040:
1.48 art 1041: if (kvm_read(kd, addr, (void *)pp, sizeof *pp) != sizeof *pp) {
1042: (void)fprintf(stderr,
1043: "vmstat: pool chain trashed: %s\n",
1044: kvm_geterr(kd));
1045: exit(1);
1046: }
1.102 deraadt 1047: if (kvm_read(kd, (u_long)pp->pr_wchan, name, sizeof name) < 0) {
1.48 art 1048: (void)fprintf(stderr,
1049: "vmstat: pool name trashed: %s\n",
1050: kvm_geterr(kd));
1051: exit(1);
1052: }
1053: name[31] = '\0';
1054:
1.129 dlg 1055: memset(&pi, 0, sizeof(pi));
1056: pi.pr_size = pp->pr_size;
1.135 tedu 1057: pi.pr_pgsize = pp->pr_pgsize;
1.129 dlg 1058: pi.pr_itemsperpage = pp->pr_itemsperpage;
1.130 dlg 1059: pi.pr_npages = pp->pr_npages;
1.129 dlg 1060: pi.pr_minpages = pp->pr_minpages;
1061: pi.pr_maxpages = pp->pr_maxpages;
1062: pi.pr_hardlimit = pp->pr_hardlimit;
1063: pi.pr_nout = pp->pr_nout;
1064: pi.pr_nitems = pp->pr_nitems;
1065: pi.pr_nget = pp->pr_nget;
1066: pi.pr_nput = pp->pr_nput;
1067: pi.pr_nfail = pp->pr_nfail;
1068: pi.pr_npagealloc = pp->pr_npagealloc;
1069: pi.pr_npagefree = pp->pr_npagefree;
1070: pi.pr_hiwat = pp->pr_hiwat;
1071: pi.pr_nidle = pp->pr_nidle;
1072:
1073: print_pool(&pi, name);
1.48 art 1074:
1.129 dlg 1075: inuse += (pi.pr_nget - pi.pr_nput) * pi.pr_size;
1076: total += pi.pr_npages * pi.pr_pgsize;
1.56 angelos 1077:
1.120 tedu 1078: addr = (u_long)SIMPLEQ_NEXT(pp, pr_poollist);
1.48 art 1079: }
1080:
1081: inuse /= 1024;
1082: total /= 1024;
1083: printf("\nIn use %ldK, total allocated %ldK; utilization %.1f%%\n",
1084: inuse, total, (double)(100 * inuse) / total);
1085: }
1086:
1.1 deraadt 1087: /*
1088: * kread reads something from the kernel, given its nlist index.
1089: */
1090: void
1.72 deraadt 1091: kread(int nlx, void *addr, size_t size)
1.1 deraadt 1092: {
1093: char *sym;
1094:
1095: if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) {
1096: sym = namelist[nlx].n_name;
1097: if (*sym == '_')
1098: ++sym;
1.50 art 1099: errx(1, "symbol %s not defined", sym);
1.1 deraadt 1100: }
1101: if (kvm_read(kd, namelist[nlx].n_value, addr, size) != size) {
1102: sym = namelist[nlx].n_name;
1103: if (*sym == '_')
1104: ++sym;
1.50 art 1105: errx(1, "%s: %s", sym, kvm_geterr(kd));
1.1 deraadt 1106: }
1107: }
1108:
1109: void
1.72 deraadt 1110: usage(void)
1.1 deraadt 1111: {
1.88 jmc 1112: (void)fprintf(stderr, "usage: %s [-fimstvz] [-c count] [-M core] "
1.109 sobrado 1113: "[-N system] [-w wait] [disk ...]\n", __progname);
1.1 deraadt 1114: exit(1);
1115: }
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