Annotation of src/usr.bin/vmstat/vmstat.c, Revision 1.115
1.11 deraadt 1: /* $NetBSD: vmstat.c,v 1.29.4.1 1996/06/05 00:21:05 cgd Exp $ */
1.115 ! lum 2: /* $OpenBSD: vmstat.c,v 1.114 2009/11/22 22:22:14 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:
1.1 deraadt 33: #include <sys/param.h>
34: #include <sys/time.h>
35: #include <sys/proc.h>
36: #include <sys/user.h>
37: #include <sys/dkstat.h>
38: #include <sys/buf.h>
39: #include <sys/namei.h>
40: #include <sys/malloc.h>
41: #include <sys/fcntl.h>
42: #include <sys/ioctl.h>
43: #include <sys/sysctl.h>
44: #include <sys/device.h>
1.48 art 45: #include <sys/pool.h>
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"
1.1 deraadt 60:
1.56 angelos 61: #include <uvm/uvm_object.h>
1.29 art 62: #include <uvm/uvm_extern.h>
63:
1.1 deraadt 64: struct nlist namelist[] = {
1.70 deraadt 65: #define X_UVMEXP 0 /* sysctl */
1.29 art 66: { "_uvmexp" },
1.70 deraadt 67: #define X_BOOTTIME 1 /* sysctl */
1.1 deraadt 68: { "_boottime" },
1.70 deraadt 69: #define X_NCHSTATS 2 /* sysctl */
1.1 deraadt 70: { "_nchstats" },
1.70 deraadt 71: #define X_KMEMSTAT 3 /* sysctl */
72: { "_kmemstats" },
73: #define X_KMEMBUCKETS 4 /* sysctl */
74: { "_bucket" },
75: #define X_FORKSTAT 5 /* sysctl */
76: { "_forkstat" },
77: #define X_NSELCOLL 6 /* sysctl */
78: { "_nselcoll" },
79: #define X_POOLHEAD 7 /* sysctl */
80: { "_pool_head" },
1.107 deraadt 81: #define X_KMPAGESFREE 8 /* sysctl */
1.98 mickey 82: { "_uvm_km_pages_free" },
1.1 deraadt 83: { "" },
84: };
85:
1.6 tholo 86: /* Objects defined in dkstats.c */
1.73 tdeval 87: extern struct _disk cur, last;
1.10 deraadt 88: extern char **dr_name;
89: extern int *dk_select, dk_ndrive;
1.1 deraadt 90:
1.29 art 91: struct uvmexp uvmexp, ouvmexp;
1.6 tholo 92: int ndrives;
1.1 deraadt 93:
94: int winlines = 20;
95:
96: kvm_t *kd;
97:
98: #define FORKSTAT 0x01
99: #define INTRSTAT 0x02
100: #define MEMSTAT 0x04
101: #define SUMSTAT 0x08
102: #define TIMESTAT 0x10
103: #define VMSTAT 0x20
104:
1.66 millert 105: void cpustats(void);
1.101 otto 106: time_t getuptime(void);
1.66 millert 107: void dkstats(void);
108: void dointr(void);
109: void domem(void);
110: void dopool(void);
111: void dosum(void);
112: void dovmstat(u_int, int);
113: void kread(int, void *, size_t);
114: void usage(void);
115: void dotimes(void);
116: void doforkst(void);
1.101 otto 117: void needhdr(int);
1.112 naddy 118: int pct(int64_t, int64_t);
1.66 millert 119: void printhdr(void);
1.1 deraadt 120:
1.66 millert 121: char **choosedrives(char **);
1.10 deraadt 122:
123: /* Namelist and memory file names. */
124: char *nlistf, *memf;
1.6 tholo 125:
1.50 art 126: extern char *__progname;
127:
1.65 art 128: int verbose = 0;
1.87 aaron 129: int zflag = 0;
1.65 art 130:
1.84 deraadt 131: int ncpu;
132:
1.21 millert 133: int
1.72 deraadt 134: main(int argc, char *argv[])
1.1 deraadt 135: {
1.102 deraadt 136: char errbuf[_POSIX2_LINE_MAX];
137: int c, todo = 0, reps = 0, mib[2];
138: const char *errstr;
139: u_int interval = 0;
1.84 deraadt 140: size_t size;
1.1 deraadt 141:
1.87 aaron 142: while ((c = getopt(argc, argv, "c:fiM:mN:stw:vz")) != -1) {
1.1 deraadt 143: switch (c) {
144: case 'c':
145: reps = atoi(optarg);
146: break;
147: case 'f':
148: todo |= FORKSTAT;
149: break;
150: case 'i':
151: todo |= INTRSTAT;
152: break;
153: case 'M':
154: memf = optarg;
155: break;
156: case 'm':
157: todo |= MEMSTAT;
158: break;
159: case 'N':
160: nlistf = optarg;
161: break;
162: case 's':
163: todo |= SUMSTAT;
164: break;
165: case 't':
166: todo |= TIMESTAT;
167: break;
168: case 'w':
1.102 deraadt 169: interval = (u_int)strtonum(optarg, 0, 1000, &errstr);
170: if (errstr)
1.104 pedro 171: errx(1, "-w %s: %s", optarg, errstr);
1.1 deraadt 172: break;
1.65 art 173: case 'v':
174: verbose = 1;
175: break;
1.87 aaron 176: case 'z':
177: zflag = 1;
178: break;
1.1 deraadt 179: case '?':
180: default:
181: usage();
182: }
183: }
184: argc -= optind;
185: argv += optind;
186:
187: if (todo == 0)
188: todo = VMSTAT;
189:
1.56 angelos 190: if (nlistf != NULL || memf != NULL) {
191:
192: kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
193: if (kd == 0)
194: errx(1, "kvm_openfiles: %s", errbuf);
195:
196: if ((c = kvm_nlist(kd, namelist)) != 0) {
197:
198: if (c > 0) {
199: (void)fprintf(stderr,
200: "%s: undefined symbols:", __progname);
201: for (c = 0;
202: c < sizeof(namelist)/sizeof(namelist[0]);
203: c++)
204: if (namelist[c].n_type == 0)
205: fprintf(stderr, " %s",
206: namelist[c].n_name);
207: (void)fputc('\n', stderr);
208: exit(1);
209: } else
210: errx(1, "kvm_nlist: %s", kvm_geterr(kd));
211: }
1.115 ! lum 212: }
1.1 deraadt 213:
1.84 deraadt 214: mib[0] = CTL_HW;
215: mib[1] = HW_NCPU;
216: size = sizeof(ncpu);
217: (void) sysctl(mib, 2, &ncpu, &size, NULL, 0);
218:
1.1 deraadt 219: if (todo & VMSTAT) {
220: struct winsize winsize;
221:
1.6 tholo 222: dkinit(0); /* Initialize disk stats, no disks selected. */
223: argv = choosedrives(argv); /* Select disks. */
1.1 deraadt 224: winsize.ws_row = 0;
1.102 deraadt 225: (void) ioctl(STDOUT_FILENO, TIOCGWINSZ, &winsize);
1.1 deraadt 226: if (winsize.ws_row > 0)
227: winlines = winsize.ws_row;
228:
229: }
1.25 deraadt 230:
1.1 deraadt 231: #define BACKWARD_COMPATIBILITY
232: #ifdef BACKWARD_COMPATIBILITY
233: if (*argv) {
1.102 deraadt 234: interval = (u_int)strtonum(*argv, 0, 1000, &errstr);
235: if (errstr)
1.104 pedro 236: errx(1, "%s: %s", *argv, errstr);
1.103 deraadt 237:
1.1 deraadt 238: if (*++argv)
239: reps = atoi(*argv);
240: }
241: #endif
242:
243: if (interval) {
244: if (!reps)
245: reps = -1;
246: } else if (reps)
247: interval = 1;
248:
249: if (todo & FORKSTAT)
250: doforkst();
1.48 art 251: if (todo & MEMSTAT) {
1.1 deraadt 252: domem();
1.48 art 253: dopool();
254: }
1.1 deraadt 255: if (todo & SUMSTAT)
256: dosum();
257: if (todo & TIMESTAT)
258: dotimes();
259: if (todo & INTRSTAT)
260: dointr();
261: if (todo & VMSTAT)
262: dovmstat(interval, reps);
263: exit(0);
264: }
265:
266: char **
1.72 deraadt 267: choosedrives(char **argv)
1.1 deraadt 268: {
1.62 mpech 269: int i;
1.1 deraadt 270:
271: /*
272: * Choose drives to be displayed. Priority goes to (in order) drives
273: * supplied as arguments, default drives. If everything isn't filled
274: * in and there are drives not taken care of, display the first few
275: * that fit.
276: */
277: #define BACKWARD_COMPATIBILITY
278: for (ndrives = 0; *argv; ++argv) {
279: #ifdef BACKWARD_COMPATIBILITY
280: if (isdigit(**argv))
281: break;
282: #endif
283: for (i = 0; i < dk_ndrive; i++) {
284: if (strcmp(dr_name[i], *argv))
285: continue;
1.6 tholo 286: dk_select[i] = 1;
1.1 deraadt 287: ++ndrives;
288: break;
289: }
290: }
1.64 deraadt 291: for (i = 0; i < dk_ndrive && ndrives < 2; i++) {
1.6 tholo 292: if (dk_select[i])
1.1 deraadt 293: continue;
1.6 tholo 294: dk_select[i] = 1;
1.1 deraadt 295: ++ndrives;
296: }
297: return(argv);
298: }
299:
1.19 deraadt 300: time_t
1.72 deraadt 301: getuptime(void)
1.1 deraadt 302: {
1.102 deraadt 303: static struct timeval boottime;
1.11 deraadt 304: static time_t now;
1.1 deraadt 305: time_t uptime;
1.102 deraadt 306: size_t size;
1.50 art 307: int mib[2];
1.1 deraadt 308:
1.50 art 309: if (boottime.tv_sec == 0) {
1.56 angelos 310: if (nlistf == NULL && memf == NULL) {
1.50 art 311: size = sizeof(boottime);
312: mib[0] = CTL_KERN;
313: mib[1] = KERN_BOOTTIME;
314: if (sysctl(mib, 2, &boottime, &size, NULL, 0) < 0) {
1.56 angelos 315: warn("could not get kern.boottime");
1.50 art 316: bzero(&boottime, sizeof(boottime));
317: }
1.56 angelos 318: } else {
319: kread(X_BOOTTIME, &boottime, sizeof(boottime));
1.50 art 320: }
321: }
1.1 deraadt 322: (void)time(&now);
1.11 deraadt 323: uptime = now - boottime.tv_sec;
1.50 art 324: if (uptime <= 0 || uptime > 60*60*24*365*10)
325: errx(1, "time makes no sense; namelist must be wrong");
326:
1.1 deraadt 327: return(uptime);
328: }
329:
1.105 cloder 330: int hz;
331: volatile sig_atomic_t hdrcnt;
1.1 deraadt 332:
333: void
1.72 deraadt 334: dovmstat(u_int interval, int reps)
1.1 deraadt 335: {
336: time_t uptime, halfuptime;
1.50 art 337: struct clockinfo clkinfo;
1.102 deraadt 338: struct vmtotal total;
1.1 deraadt 339: size_t size;
1.102 deraadt 340: int mib[2];
1.1 deraadt 341:
342: uptime = getuptime();
343: halfuptime = uptime / 2;
344: (void)signal(SIGCONT, needhdr);
345:
1.50 art 346: mib[0] = CTL_KERN;
347: mib[1] = KERN_CLOCKRATE;
348: size = sizeof(clkinfo);
349: if (sysctl(mib, 2, &clkinfo, &size, NULL, 0) < 0) {
1.56 angelos 350: warn("could not read kern.clockrate");
1.50 art 351: return;
352: }
353: hz = clkinfo.stathz;
1.1 deraadt 354:
355: for (hdrcnt = 1;;) {
1.6 tholo 356: /* Read new disk statistics */
357: dkreadstats();
1.73 tdeval 358: if (!--hdrcnt || last.dk_ndrive != cur.dk_ndrive)
359: printhdr();
1.56 angelos 360: if (nlistf == NULL && memf == NULL) {
361: size = sizeof(struct uvmexp);
1.52 angelos 362: mib[0] = CTL_VM;
363: mib[1] = VM_UVMEXP;
364: if (sysctl(mib, 2, &uvmexp, &size, NULL, 0) < 0) {
1.56 angelos 365: warn("could not get vm.uvmexp");
366: bzero(&uvmexp, sizeof(struct uvmexp));
1.52 angelos 367: }
1.56 angelos 368: } else {
369: kread(X_UVMEXP, &uvmexp, sizeof(struct uvmexp));
1.52 angelos 370: }
1.1 deraadt 371: size = sizeof(total);
372: mib[0] = CTL_VM;
373: mib[1] = VM_METER;
374: if (sysctl(mib, 2, &total, &size, NULL, 0) < 0) {
1.56 angelos 375: warn("could not read vm.vmmeter");
1.1 deraadt 376: bzero(&total, sizeof(total));
377: }
1.114 tedu 378: (void)printf(" %u %u %u ",
1.1 deraadt 379: total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw);
1.111 deraadt 380: #define rate(x) ((((unsigned)x) + halfuptime) / uptime) /* round */
1.102 deraadt 381: #define pgtok(a) ((a) * ((unsigned int)uvmexp.pagesize >> 10))
1.114 tedu 382: (void)printf("%6u %7u ",
1.1 deraadt 383: pgtok(total.t_avm), pgtok(total.t_free));
1.106 sobrado 384: (void)printf("%4u ", rate(uvmexp.faults - ouvmexp.faults));
1.29 art 385: (void)printf("%3u ", rate(uvmexp.pdreact - ouvmexp.pdreact));
386: (void)printf("%3u ", rate(uvmexp.pageins - ouvmexp.pageins));
387: (void)printf("%3u %3u ",
388: rate(uvmexp.pdpageouts - ouvmexp.pdpageouts), 0);
389: (void)printf("%3u ", rate(uvmexp.pdscans - ouvmexp.pdscans));
390: dkstats();
1.64 deraadt 391: (void)printf("%4u %5u %4u ",
1.29 art 392: rate(uvmexp.intrs - ouvmexp.intrs),
393: rate(uvmexp.syscalls - ouvmexp.syscalls),
394: rate(uvmexp.swtch - ouvmexp.swtch));
1.1 deraadt 395: cpustats();
396: (void)printf("\n");
397: (void)fflush(stdout);
398: if (reps >= 0 && --reps <= 0)
399: break;
1.29 art 400: ouvmexp = uvmexp;
1.1 deraadt 401: uptime = interval;
402: /*
403: * We round upward to avoid losing low-frequency events
404: * (i.e., >= 1 per interval but < 1 per second).
405: */
1.14 deraadt 406: halfuptime = uptime == 1 ? 0 : (uptime + 1) / 2;
1.1 deraadt 407: (void)sleep(interval);
408: }
409: }
410:
1.21 millert 411: void
1.72 deraadt 412: printhdr(void)
1.1 deraadt 413: {
1.62 mpech 414: int i;
1.114 tedu 415: static int printedhdr;
416:
417: if (printedhdr && !isatty(STDOUT_FILENO))
418: return;
1.1 deraadt 419:
1.108 sobrado 420: (void)printf(" procs memory page%*s", 20, "");
1.6 tholo 421: if (ndrives > 0)
1.106 sobrado 422: (void)printf("%s %*straps cpu\n",
1.6 tholo 423: ((ndrives > 1) ? "disks" : "disk"),
1.106 sobrado 424: ((ndrives > 1) ? ndrives * 4 - 5 : 0), "");
1.1 deraadt 425: else
1.106 sobrado 426: (void)printf("%*s traps cpu\n",
1.6 tholo 427: ndrives * 3, "");
428:
1.106 sobrado 429: (void)printf(" r b w avm fre flt re pi po fr sr ");
1.1 deraadt 430: for (i = 0; i < dk_ndrive; i++)
1.6 tholo 431: if (dk_select[i])
1.67 ho 432: (void)printf("%c%c%c ", dr_name[i][0],
1.64 deraadt 433: dr_name[i][1],
1.1 deraadt 434: dr_name[i][strlen(dr_name[i]) - 1]);
1.79 tedu 435: (void)printf(" int sys cs us sy id\n");
1.1 deraadt 436: hdrcnt = winlines - 2;
1.114 tedu 437: printedhdr = 1;
1.1 deraadt 438: }
439:
440: /*
441: * Force a header to be prepended to the next output.
442: */
1.90 deraadt 443: /* ARGSUSED */
1.1 deraadt 444: void
1.78 deraadt 445: needhdr(int signo)
1.1 deraadt 446: {
447:
448: hdrcnt = 1;
449: }
450:
451: void
1.72 deraadt 452: dotimes(void)
1.1 deraadt 453: {
454: u_int pgintime, rectime;
1.102 deraadt 455: size_t size;
1.52 angelos 456: int mib[2];
1.1 deraadt 457:
1.56 angelos 458: /* XXX Why are these set to 0 ? This doesn't look right. */
1.12 tholo 459: pgintime = 0;
460: rectime = 0;
1.56 angelos 461:
462: if (nlistf == NULL && memf == NULL) {
463: size = sizeof(struct uvmexp);
1.52 angelos 464: mib[0] = CTL_VM;
465: mib[1] = VM_UVMEXP;
466: if (sysctl(mib, 2, &uvmexp, &size, NULL, 0) < 0) {
1.56 angelos 467: warn("could not read vm.uvmexp");
468: bzero(&uvmexp, sizeof(struct uvmexp));
1.52 angelos 469: }
1.56 angelos 470: } else {
471: kread(X_UVMEXP, &uvmexp, sizeof(struct uvmexp));
1.52 angelos 472: }
473:
1.29 art 474: (void)printf("%u reactivates, %u total time (usec)\n",
475: uvmexp.pdreact, rectime);
1.89 miod 476: if (uvmexp.pdreact != 0)
477: (void)printf("average: %u usec / reclaim\n",
478: rectime / uvmexp.pdreact);
1.29 art 479: (void)printf("\n");
480: (void)printf("%u page ins, %u total time (msec)\n",
481: uvmexp.pageins, pgintime / 10);
1.89 miod 482: if (uvmexp.pageins != 0)
483: (void)printf("average: %8.1f msec / page in\n",
1.103 deraadt 484: pgintime / (uvmexp.pageins * 10.0));
1.1 deraadt 485: }
486:
1.21 millert 487: int
1.112 naddy 488: pct(int64_t top, int64_t bot)
1.1 deraadt 489: {
1.102 deraadt 490: int ans;
1.1 deraadt 491:
492: if (bot == 0)
493: return(0);
1.112 naddy 494: ans = top * 100 / bot;
1.1 deraadt 495: return (ans);
496: }
497:
498: void
1.72 deraadt 499: dosum(void)
1.1 deraadt 500: {
501: struct nchstats nchstats;
1.102 deraadt 502: int mib[2], nselcoll;
1.112 naddy 503: long long nchtotal;
1.52 angelos 504: size_t size;
1.1 deraadt 505:
1.56 angelos 506: if (nlistf == NULL && memf == NULL) {
507: size = sizeof(struct uvmexp);
1.52 angelos 508: mib[0] = CTL_VM;
509: mib[1] = VM_UVMEXP;
510: if (sysctl(mib, 2, &uvmexp, &size, NULL, 0) < 0) {
1.56 angelos 511: warn("could not read vm.uvmexp");
512: bzero(&uvmexp, sizeof(struct uvmexp));
1.52 angelos 513: }
1.56 angelos 514: } else {
515: kread(X_UVMEXP, &uvmexp, sizeof(struct uvmexp));
1.52 angelos 516: }
517:
1.32 art 518: /* vm_page constants */
1.35 hugh 519: (void)printf("%11u bytes per page\n", uvmexp.pagesize);
1.32 art 520:
521: /* vm_page counters */
1.35 hugh 522: (void)printf("%11u pages managed\n", uvmexp.npages);
523: (void)printf("%11u pages free\n", uvmexp.free);
524: (void)printf("%11u pages active\n", uvmexp.active);
525: (void)printf("%11u pages inactive\n", uvmexp.inactive);
526: (void)printf("%11u pages being paged out\n", uvmexp.paging);
527: (void)printf("%11u pages wired\n", uvmexp.wired);
1.71 art 528: (void)printf("%11u pages zeroed\n", uvmexp.zeropages);
1.35 hugh 529: (void)printf("%11u pages reserved for pagedaemon\n",
1.48 art 530: uvmexp.reserve_pagedaemon);
1.35 hugh 531: (void)printf("%11u pages reserved for kernel\n",
1.48 art 532: uvmexp.reserve_kernel);
1.32 art 533:
534: /* swap */
1.35 hugh 535: (void)printf("%11u swap pages\n", uvmexp.swpages);
536: (void)printf("%11u swap pages in use\n", uvmexp.swpginuse);
537: (void)printf("%11u total anon's in system\n", uvmexp.nanon);
538: (void)printf("%11u free anon's\n", uvmexp.nfreeanon);
1.32 art 539:
540: /* stat counters */
1.35 hugh 541: (void)printf("%11u page faults\n", uvmexp.faults);
542: (void)printf("%11u traps\n", uvmexp.traps);
543: (void)printf("%11u interrupts\n", uvmexp.intrs);
544: (void)printf("%11u cpu context switches\n", uvmexp.swtch);
1.95 mickey 545: (void)printf("%11u fpu context switches\n", uvmexp.fpswtch);
1.35 hugh 546: (void)printf("%11u software interrupts\n", uvmexp.softs);
547: (void)printf("%11u syscalls\n", uvmexp.syscalls);
548: (void)printf("%11u pagein operations\n", uvmexp.pageins);
549: (void)printf("%11u swap ins\n", uvmexp.swapins);
550: (void)printf("%11u swap outs\n", uvmexp.swapouts);
551: (void)printf("%11u forks\n", uvmexp.forks);
552: (void)printf("%11u forks where vmspace is shared\n",
1.48 art 553: uvmexp.forks_sharevm);
1.97 pedro 554: (void)printf("%11u kernel map entries\n", uvmexp.kmapent);
1.32 art 555:
556: /* daemon counters */
1.64 deraadt 557: (void)printf("%11u number of times the pagedaemon woke up\n",
1.48 art 558: uvmexp.pdwoke);
1.35 hugh 559: (void)printf("%11u revolutions of the clock hand\n", uvmexp.pdrevs);
560: (void)printf("%11u pages freed by pagedaemon\n", uvmexp.pdfreed);
561: (void)printf("%11u pages scanned by pagedaemon\n", uvmexp.pdscans);
562: (void)printf("%11u pages reactivated by pagedaemon\n", uvmexp.pdreact);
563: (void)printf("%11u busy pages found by pagedaemon\n", uvmexp.pdbusy);
1.29 art 564:
1.56 angelos 565: if (nlistf == NULL && memf == NULL) {
1.52 angelos 566: size = sizeof(nchstats);
567: mib[0] = CTL_KERN;
568: mib[1] = KERN_NCHSTATS;
569: if (sysctl(mib, 2, &nchstats, &size, NULL, 0) < 0) {
1.56 angelos 570: warn("could not read kern.nchstats");
1.52 angelos 571: bzero(&nchstats, sizeof(nchstats));
572: }
1.56 angelos 573: } else {
574: kread(X_NCHSTATS, &nchstats, sizeof(nchstats));
1.52 angelos 575: }
576:
1.1 deraadt 577: nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits +
578: nchstats.ncs_badhits + nchstats.ncs_falsehits +
579: nchstats.ncs_miss + nchstats.ncs_long;
1.112 naddy 580: (void)printf("%11lld total name lookups\n", nchtotal);
1.52 angelos 581: (void)printf("%11s cache hits (%d%% pos + %d%% neg) system %d%% "
582: "per-directory\n",
1.112 naddy 583: "", pct(nchstats.ncs_goodhits, nchtotal),
584: pct(nchstats.ncs_neghits, nchtotal),
585: pct(nchstats.ncs_pass2, nchtotal));
1.35 hugh 586: (void)printf("%11s deletions %d%%, falsehits %d%%, toolong %d%%\n", "",
1.112 naddy 587: pct(nchstats.ncs_badhits, nchtotal),
588: pct(nchstats.ncs_falsehits, nchtotal),
589: pct(nchstats.ncs_long, nchtotal));
1.52 angelos 590:
1.56 angelos 591: if (nlistf == NULL && memf == NULL) {
1.52 angelos 592: size = sizeof(nselcoll);
593: mib[0] = CTL_KERN;
594: mib[1] = KERN_NSELCOLL;
595: if (sysctl(mib, 2, &nselcoll, &size, NULL, 0) < 0) {
1.56 angelos 596: warn("could not read kern.nselcoll");
1.52 angelos 597: nselcoll = 0;
598: }
1.56 angelos 599: } else {
600: kread(X_NSELCOLL, &nselcoll, sizeof(nselcoll));
1.52 angelos 601: }
1.50 art 602: (void)printf("%11d select collisions\n", nselcoll);
1.1 deraadt 603: }
604:
605: void
1.72 deraadt 606: doforkst(void)
1.1 deraadt 607: {
608: struct forkstat fks;
1.52 angelos 609: size_t size;
610: int mib[2];
611:
1.56 angelos 612: if (nlistf == NULL && memf == NULL) {
1.52 angelos 613: size = sizeof(struct forkstat);
614: mib[0] = CTL_KERN;
615: mib[1] = KERN_FORKSTAT;
616: if (sysctl(mib, 2, &fks, &size, NULL, 0) < 0) {
1.56 angelos 617: warn("could not read kern.forkstat");
1.52 angelos 618: bzero(&fks, sizeof(struct forkstat));
619: }
1.56 angelos 620: } else {
621: kread(X_FORKSTAT, &fks, sizeof(struct forkstat));
1.52 angelos 622: }
1.1 deraadt 623:
624: (void)printf("%d forks, %d pages, average %.2f\n",
625: fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork);
626: (void)printf("%d vforks, %d pages, average %.2f\n",
1.72 deraadt 627: fks.cntvfork, fks.sizvfork,
628: (double)fks.sizvfork / (fks.cntvfork ? fks.cntvfork : 1));
1.12 tholo 629: (void)printf("%d rforks, %d pages, average %.2f\n",
1.72 deraadt 630: fks.cntrfork, fks.sizrfork,
631: (double)fks.sizrfork / (fks.cntrfork ? fks.cntrfork : 1));
1.36 niklas 632: (void)printf("%d kthread creations, %d pages, average %.2f\n",
1.72 deraadt 633: fks.cntkthread, fks.sizkthread,
634: (double)fks.sizkthread / (fks.cntkthread ? fks.cntkthread : 1));
1.1 deraadt 635: }
636:
637: void
1.72 deraadt 638: dkstats(void)
1.1 deraadt 639: {
1.62 mpech 640: int dn, state;
1.1 deraadt 641: double etime;
642:
1.6 tholo 643: /* Calculate disk stat deltas. */
644: dkswap();
1.1 deraadt 645: etime = 0;
646: for (state = 0; state < CPUSTATES; ++state) {
1.6 tholo 647: etime += cur.cp_time[state];
1.1 deraadt 648: }
649: if (etime == 0)
650: etime = 1;
651: etime /= hz;
1.84 deraadt 652: etime /= ncpu;
1.1 deraadt 653: for (dn = 0; dn < dk_ndrive; ++dn) {
1.6 tholo 654: if (!dk_select[dn])
1.1 deraadt 655: continue;
1.82 tedu 656: (void)printf("%3.0f ",
657: (cur.dk_rxfer[dn] + cur.dk_rxfer[dn]) / etime);
1.1 deraadt 658: }
659: }
660:
661: void
1.72 deraadt 662: cpustats(void)
1.1 deraadt 663: {
1.102 deraadt 664: double percent, total;
1.62 mpech 665: int state;
1.1 deraadt 666:
667: total = 0;
668: for (state = 0; state < CPUSTATES; ++state)
1.6 tholo 669: total += cur.cp_time[state];
1.1 deraadt 670: if (total)
1.101 otto 671: percent = 100 / total;
1.1 deraadt 672: else
1.101 otto 673: percent = 0;
674: (void)printf("%2.0f ", (cur.cp_time[CP_USER] + cur.cp_time[CP_NICE]) * percent);
675: (void)printf("%2.0f ", (cur.cp_time[CP_SYS] + cur.cp_time[CP_INTR]) * percent);
676: (void)printf("%2.0f", cur.cp_time[CP_IDLE] * percent);
1.1 deraadt 677: }
678:
679: void
1.72 deraadt 680: dointr(void)
1.74 art 681: {
1.102 deraadt 682: int nintr, mib[4], i;
683: char intrname[128];
684: u_int64_t inttotal;
1.74 art 685: time_t uptime;
686: size_t siz;
687:
1.93 miod 688: if (nlistf != NULL || memf != NULL) {
689: errx(1,
690: "interrupt statistics are only available on live kernels");
691: }
692:
1.74 art 693: uptime = getuptime();
694:
695: mib[0] = CTL_KERN;
696: mib[1] = KERN_INTRCNT;
697: mib[2] = KERN_INTRCNT_NUM;
698: siz = sizeof(nintr);
699: if (sysctl(mib, 3, &nintr, &siz, NULL, 0) < 0) {
700: warnx("could not read kern.intrcnt.nintrcnt");
701: return;
702: }
703:
1.91 deraadt 704: (void)printf("%-16s %20s %8s\n", "interrupt", "total", "rate");
1.87 aaron 705:
1.74 art 706: inttotal = 0;
707: for (i = 0; i < nintr; i++) {
1.87 aaron 708: char name[128];
1.90 deraadt 709: u_quad_t cnt;
1.87 aaron 710: int vector;
1.74 art 711:
712: mib[0] = CTL_KERN;
713: mib[1] = KERN_INTRCNT;
714: mib[2] = KERN_INTRCNT_NAME;
715: mib[3] = i;
1.87 aaron 716: siz = sizeof(name);
717: if (sysctl(mib, 4, name, &siz, NULL, 0) < 0) {
1.74 art 718: warnx("could not read kern.intrcnt.name.%d", i);
1.87 aaron 719: return;
720: }
721:
722: mib[0] = CTL_KERN;
723: mib[1] = KERN_INTRCNT;
724: mib[2] = KERN_INTRCNT_VECTOR;
725: mib[3] = i;
726: siz = sizeof(vector);
727: if (sysctl(mib, 4, &vector, &siz, NULL, 0) < 0) {
728: strlcpy(intrname, name, sizeof(intrname));
729: } else {
730: snprintf(intrname, sizeof(intrname), "irq%d/%s",
731: vector, name);
1.74 art 732: }
733:
734: mib[0] = CTL_KERN;
735: mib[1] = KERN_INTRCNT;
736: mib[2] = KERN_INTRCNT_CNT;
737: mib[3] = i;
738: siz = sizeof(cnt);
739: if (sysctl(mib, 4, &cnt, &siz, NULL, 0) < 0) {
1.75 grange 740: warnx("could not read kern.intrcnt.cnt.%d", i);
1.90 deraadt 741: return;
1.74 art 742: }
1.90 deraadt 743:
1.87 aaron 744: if (cnt || zflag)
1.91 deraadt 745: (void)printf("%-16.16s %20llu %8llu\n", intrname,
1.90 deraadt 746: cnt, cnt / uptime);
1.74 art 747: inttotal += cnt;
748: }
749:
1.91 deraadt 750: (void)printf("%-16s %20llu %8llu\n", "Total", inttotal,
1.90 deraadt 751: inttotal / uptime);
1.1 deraadt 752: }
753:
754: /*
755: * These names are defined in <sys/malloc.h>.
756: */
1.101 otto 757: const char *kmemnames[] = INITKMEMNAMES;
1.1 deraadt 758:
759: void
1.72 deraadt 760: domem(void)
1.1 deraadt 761: {
1.102 deraadt 762: struct kmembuckets buckets[MINBUCKET + 16], *kp;
763: struct kmemstats kmemstats[M_LAST], *ks;
764: int i, j, len, size, first, mib[4];
1.50 art 765: u_long totuse = 0, totfree = 0;
1.102 deraadt 766: char buf[BUFSIZ], *bufp, *ap;
1.50 art 767: quad_t totreq = 0;
1.101 otto 768: const char *name;
1.50 art 769: size_t siz;
770:
771: if (memf == NULL && nlistf == NULL) {
1.53 deraadt 772: mib[0] = CTL_KERN;
1.50 art 773: mib[1] = KERN_MALLOCSTATS;
774: mib[2] = KERN_MALLOC_BUCKETS;
775: siz = sizeof(buf);
776: if (sysctl(mib, 3, buf, &siz, NULL, 0) < 0) {
1.56 angelos 777: warnx("could not read kern.malloc.buckets");
1.50 art 778: return;
779: }
780:
781: bufp = buf;
782: mib[2] = KERN_MALLOC_BUCKET;
783: siz = sizeof(struct kmembuckets);
784: i = 0;
785: while ((ap = strsep(&bufp, ",")) != NULL) {
1.53 deraadt 786: mib[3] = atoi(ap);
1.50 art 787:
788: if (sysctl(mib, 4, &buckets[MINBUCKET + i], &siz,
1.53 deraadt 789: NULL, 0) < 0) {
1.56 angelos 790: warn("could not read kern.malloc.bucket.%d", mib[3]);
1.50 art 791: return;
792: }
793: i++;
794: }
795: } else {
1.53 deraadt 796: kread(X_KMEMBUCKETS, buckets, sizeof(buckets));
1.50 art 797: }
1.1 deraadt 798:
1.18 kstailey 799: for (first = 1, i = MINBUCKET, kp = &buckets[i]; i < MINBUCKET + 16;
800: i++, kp++) {
1.65 art 801: if (kp->kb_calls == 0 && !verbose)
1.1 deraadt 802: continue;
1.18 kstailey 803: if (first) {
804: (void)printf("Memory statistics by bucket size\n");
805: (void)printf(
1.50 art 806: " Size In Use Free Requests HighWater Couldfree\n");
1.18 kstailey 807: first = 0;
808: }
1.1 deraadt 809: size = 1 << i;
1.60 art 810: (void)printf("%8d %8llu %6llu %18llu %7llu %10llu\n", size,
811: (unsigned long long)(kp->kb_total - kp->kb_totalfree),
812: (unsigned long long)kp->kb_totalfree,
813: (unsigned long long)kp->kb_calls,
814: (unsigned long long)kp->kb_highwat,
815: (unsigned long long)kp->kb_couldfree);
1.1 deraadt 816: totfree += size * kp->kb_totalfree;
1.18 kstailey 817: }
818:
819: /*
820: * If kmem statistics are not being gathered by the kernel,
821: * first will still be 1.
822: */
823: if (first) {
824: printf(
825: "Kmem statistics are not being gathered by the kernel.\n");
826: return;
1.1 deraadt 827: }
828:
1.52 angelos 829: if (memf == NULL && nlistf == NULL) {
830: bzero(kmemstats, sizeof(kmemstats));
831: for (i = 0; i < M_LAST; i++) {
1.53 deraadt 832: mib[0] = CTL_KERN;
1.52 angelos 833: mib[1] = KERN_MALLOCSTATS;
834: mib[2] = KERN_MALLOC_KMEMSTATS;
835: mib[3] = i;
836: siz = sizeof(struct kmemstats);
837:
1.103 deraadt 838: /*
1.52 angelos 839: * Skip errors -- these are presumed to be unallocated
840: * entries.
841: */
842: if (sysctl(mib, 4, &kmemstats[i], &siz, NULL, 0) < 0)
843: continue;
844: }
845: } else {
846: kread(X_KMEMSTAT, kmemstats, sizeof(kmemstats));
847: }
848:
1.1 deraadt 849: (void)printf("\nMemory usage type by bucket size\n");
850: (void)printf(" Size Type(s)\n");
851: kp = &buckets[MINBUCKET];
852: for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1, kp++) {
853: if (kp->kb_calls == 0)
854: continue;
855: first = 1;
856: len = 8;
857: for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) {
858: if (ks->ks_calls == 0)
859: continue;
860: if ((ks->ks_size & j) == 0)
861: continue;
862: name = kmemnames[i] ? kmemnames[i] : "undefined";
863: len += 2 + strlen(name);
864: if (first)
865: printf("%8d %s", j, name);
866: else
867: printf(",");
868: if (len >= 80) {
869: printf("\n\t ");
870: len = 10 + strlen(name);
871: }
872: if (!first)
873: printf(" %s", name);
874: first = 0;
875: }
876: printf("\n");
877: }
878:
879: (void)printf(
1.26 deraadt 880: "\nMemory statistics by type Type Kern\n");
1.1 deraadt 881: (void)printf(
1.26 deraadt 882: " Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)\n");
1.1 deraadt 883: for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) {
884: if (ks->ks_calls == 0)
885: continue;
1.24 mickey 886: (void)printf("%14s%6ld%6ldK%7ldK%6ldK%9ld%5u%6u",
1.1 deraadt 887: kmemnames[i] ? kmemnames[i] : "undefined",
888: ks->ks_inuse, (ks->ks_memuse + 1023) / 1024,
889: (ks->ks_maxused + 1023) / 1024,
890: (ks->ks_limit + 1023) / 1024, ks->ks_calls,
891: ks->ks_limblocks, ks->ks_mapblocks);
892: first = 1;
893: for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) {
894: if ((ks->ks_size & j) == 0)
895: continue;
896: if (first)
897: printf(" %d", j);
898: else
899: printf(",%d", j);
900: first = 0;
901: }
902: printf("\n");
903: totuse += ks->ks_memuse;
904: totreq += ks->ks_calls;
905: }
906: (void)printf("\nMemory Totals: In Use Free Requests\n");
1.50 art 907: (void)printf(" %7luK %6luK %8qu\n",
1.1 deraadt 908: (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq);
909: }
910:
1.54 art 911: static void
912: print_pool(struct pool *pp, char *name)
913: {
914: static int first = 1;
1.102 deraadt 915: char maxp[32];
1.54 art 916: int ovflw;
917:
918: if (first) {
919: (void)printf("Memory resource pool statistics\n");
920: (void)printf(
921: "%-11s%5s%9s%5s%9s%6s%6s%6s%6s%6s%6s%5s\n",
922: "Name",
923: "Size",
924: "Requests",
925: "Fail",
1.110 otto 926: "InUse",
1.54 art 927: "Pgreq",
928: "Pgrel",
929: "Npage",
930: "Hiwat",
931: "Minpg",
932: "Maxpg",
933: "Idle");
934: first = 0;
935: }
1.65 art 936:
937: /* Skip unused pools unless verbose output. */
938: if (pp->pr_nget == 0 && !verbose)
939: return;
940:
1.54 art 941: if (pp->pr_maxpages == UINT_MAX)
1.69 deraadt 942: snprintf(maxp, sizeof maxp, "inf");
1.54 art 943: else
1.69 deraadt 944: snprintf(maxp, sizeof maxp, "%u", pp->pr_maxpages);
1.54 art 945: /*
946: * Print single word. `ovflow' is number of characters didn't fit
947: * on the last word. `fmt' is a format string to print this word.
948: * It must contain asterisk for field width. `width' is a width
949: * occupied by this word. `fixed' is a number of constant chars in
950: * `fmt'. `val' is a value to be printed using format string `fmt'.
951: */
952: #define PRWORD(ovflw, fmt, width, fixed, val) do { \
953: (ovflw) += printf((fmt), \
954: (width) - (fixed) - (ovflw) > 0 ? \
955: (width) - (fixed) - (ovflw) : 0, \
956: (val)) - (width); \
957: if ((ovflw) < 0) \
958: (ovflw) = 0; \
959: } while (/* CONSTCOND */0)
960:
961: ovflw = 0;
962: PRWORD(ovflw, "%-*s", 11, 0, name);
963: PRWORD(ovflw, " %*u", 5, 1, pp->pr_size);
964: PRWORD(ovflw, " %*lu", 9, 1, pp->pr_nget);
965: PRWORD(ovflw, " %*lu", 5, 1, pp->pr_nfail);
1.110 otto 966: PRWORD(ovflw, " %*lu", 9, 1, pp->pr_nget - pp->pr_nput);
1.54 art 967: PRWORD(ovflw, " %*lu", 6, 1, pp->pr_npagealloc);
968: PRWORD(ovflw, " %*lu", 6, 1, pp->pr_npagefree);
969: PRWORD(ovflw, " %*d", 6, 1, pp->pr_npages);
970: PRWORD(ovflw, " %*d", 6, 1, pp->pr_hiwat);
971: PRWORD(ovflw, " %*d", 6, 1, pp->pr_minpages);
972: PRWORD(ovflw, " %*s", 6, 1, maxp);
1.103 deraadt 973: PRWORD(ovflw, " %*lu\n", 5, 1, pp->pr_nidle);
1.54 art 974: }
975:
1.55 art 976: static void dopool_kvm(void);
977: static void dopool_sysctl(void);
978:
1.48 art 979: void
980: dopool(void)
981: {
1.55 art 982: if (nlistf == NULL && memf == NULL)
983: dopool_sysctl();
984: else
985: dopool_kvm();
986: }
987:
988: void
989: dopool_sysctl(void)
990: {
1.102 deraadt 991: int mib[4], npools, i, kmfp;
1.63 art 992: long total = 0, inuse = 0;
1.55 art 993: struct pool pool;
994: size_t size;
995:
996: mib[0] = CTL_KERN;
997: mib[1] = KERN_POOL;
998: mib[2] = KERN_POOL_NPOOLS;
999: size = sizeof(npools);
1000: if (sysctl(mib, 3, &npools, &size, NULL, 0) < 0) {
1.92 pedro 1001: warn("can't figure out number of pools in kernel");
1.55 art 1002: return;
1003: }
1004:
1005: for (i = 1; npools; i++) {
1006: char name[32];
1007:
1008: mib[0] = CTL_KERN;
1009: mib[1] = KERN_POOL;
1010: mib[2] = KERN_POOL_POOL;
1011: mib[3] = i;
1012: size = sizeof(struct pool);
1013: if (sysctl(mib, 4, &pool, &size, NULL, 0) < 0) {
1014: if (errno == ENOENT)
1015: continue;
1.92 pedro 1016: warn("error getting pool");
1.55 art 1017: return;
1018: }
1019: npools--;
1020: mib[2] = KERN_POOL_NAME;
1021: size = sizeof(name);
1022: if (sysctl(mib, 4, &name, &size, NULL, 0) < 0) {
1.92 pedro 1023: warn("error getting pool name");
1.55 art 1024: return;
1025: }
1026: print_pool(&pool, name);
1.63 art 1027:
1028: inuse += (pool.pr_nget - pool.pr_nput) * pool.pr_size;
1029: total += pool.pr_npages * getpagesize(); /* XXX */
1.55 art 1030: }
1.63 art 1031:
1032: inuse /= 1024;
1033: total /= 1024;
1.107 deraadt 1034: if (nlistf == NULL && memf == NULL) {
1035: int mib[] = { CTL_VM, VM_KMPAGESFREE };
1036: size_t size = sizeof(kmfp);
1037:
1038: if (sysctl(mib, 2, &kmfp, &size, NULL, 0) < 0) {
1039: warn("could not read uvm.kmpagesfree");
1040: return;
1041: }
1042: } else {
1043: kread(X_KMPAGESFREE, &kmfp, sizeof(kmfp));
1044: }
1045: total += kmfp * (getpagesize() / 1024);
1.63 art 1046: printf("\nIn use %ldK, total allocated %ldK; utilization %.1f%%\n",
1047: inuse, total, (double)(100 * inuse) / total);
1.55 art 1048: }
1049:
1050: void
1051: dopool_kvm(void)
1052: {
1.48 art 1053: TAILQ_HEAD(,pool) pool_head;
1054: struct pool pool, *pp = &pool;
1.102 deraadt 1055: long total = 0, inuse = 0;
1056: u_long addr;
1.98 mickey 1057: int kmfp;
1.48 art 1058:
1059: kread(X_POOLHEAD, &pool_head, sizeof(pool_head));
1.102 deraadt 1060: addr = (u_long)TAILQ_FIRST(&pool_head);
1.48 art 1061:
1.55 art 1062: while (addr != 0) {
1.54 art 1063: char name[32];
1.56 angelos 1064:
1.48 art 1065: if (kvm_read(kd, addr, (void *)pp, sizeof *pp) != sizeof *pp) {
1066: (void)fprintf(stderr,
1067: "vmstat: pool chain trashed: %s\n",
1068: kvm_geterr(kd));
1069: exit(1);
1070: }
1.102 deraadt 1071: if (kvm_read(kd, (u_long)pp->pr_wchan, name, sizeof name) < 0) {
1.48 art 1072: (void)fprintf(stderr,
1073: "vmstat: pool name trashed: %s\n",
1074: kvm_geterr(kd));
1075: exit(1);
1076: }
1.56 angelos 1077:
1.48 art 1078: name[31] = '\0';
1079:
1.54 art 1080: print_pool(pp, name);
1.48 art 1081:
1082: inuse += (pp->pr_nget - pp->pr_nput) * pp->pr_size;
1.63 art 1083: total += pp->pr_npages * getpagesize(); /* XXX */
1.56 angelos 1084:
1.102 deraadt 1085: addr = (u_long)TAILQ_NEXT(pp, pr_poollist);
1.48 art 1086: }
1087:
1088: inuse /= 1024;
1089: total /= 1024;
1.107 deraadt 1090: kread(X_KMPAGESFREE, &kmfp, sizeof(kmfp));
1091: total += kmfp * (getpagesize() / 1024);
1.48 art 1092: printf("\nIn use %ldK, total allocated %ldK; utilization %.1f%%\n",
1093: inuse, total, (double)(100 * inuse) / total);
1094: }
1095:
1.1 deraadt 1096: /*
1097: * kread reads something from the kernel, given its nlist index.
1098: */
1099: void
1.72 deraadt 1100: kread(int nlx, void *addr, size_t size)
1.1 deraadt 1101: {
1102: char *sym;
1103:
1104: if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) {
1105: sym = namelist[nlx].n_name;
1106: if (*sym == '_')
1107: ++sym;
1.50 art 1108: errx(1, "symbol %s not defined", sym);
1.1 deraadt 1109: }
1110: if (kvm_read(kd, namelist[nlx].n_value, addr, size) != size) {
1111: sym = namelist[nlx].n_name;
1112: if (*sym == '_')
1113: ++sym;
1.50 art 1114: errx(1, "%s: %s", sym, kvm_geterr(kd));
1.1 deraadt 1115: }
1116: }
1117:
1118: void
1.72 deraadt 1119: usage(void)
1.1 deraadt 1120: {
1.88 jmc 1121: (void)fprintf(stderr, "usage: %s [-fimstvz] [-c count] [-M core] "
1.109 sobrado 1122: "[-N system] [-w wait] [disk ...]\n", __progname);
1.1 deraadt 1123: exit(1);
1124: }
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