Annotation of src/usr.bin/vmstat/vmstat.c, Revision 1.146
1.11 deraadt 1: /* $NetBSD: vmstat.c,v 1.29.4.1 1996/06/05 00:21:05 cgd Exp $ */
1.146 ! deraadt 2: /* $OpenBSD: vmstat.c,v 1.145 2018/06/19 22:35:07 krw 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/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" },
75: #define X_NSELCOLL 6 /* sysctl */
76: { "_nselcoll" },
77: #define X_POOLHEAD 7 /* sysctl */
78: { "_pool_head" },
1.124 guenther 79: #define X_NAPTIME 8
80: { "_naptime" },
1.1 deraadt 81: { "" },
82: };
83:
1.6 tholo 84: /* Objects defined in dkstats.c */
1.73 tdeval 85: extern struct _disk cur, last;
1.10 deraadt 86: extern char **dr_name;
87: extern int *dk_select, dk_ndrive;
1.1 deraadt 88:
1.29 art 89: struct uvmexp uvmexp, ouvmexp;
1.6 tholo 90: int ndrives;
1.1 deraadt 91:
92: int winlines = 20;
93:
94: kvm_t *kd;
95:
96: #define FORKSTAT 0x01
97: #define INTRSTAT 0x02
98: #define MEMSTAT 0x04
99: #define SUMSTAT 0x08
100: #define TIMESTAT 0x10
101: #define VMSTAT 0x20
102:
1.66 millert 103: void cpustats(void);
1.101 otto 104: time_t getuptime(void);
1.66 millert 105: void dkstats(void);
106: void dointr(void);
107: void domem(void);
108: void dopool(void);
109: void dosum(void);
110: void dovmstat(u_int, int);
111: void kread(int, void *, size_t);
112: void usage(void);
113: void dotimes(void);
114: void doforkst(void);
1.101 otto 115: void needhdr(int);
1.112 naddy 116: int pct(int64_t, int64_t);
1.66 millert 117: void printhdr(void);
1.1 deraadt 118:
1.66 millert 119: char **choosedrives(char **);
1.10 deraadt 120:
121: /* Namelist and memory file names. */
122: char *nlistf, *memf;
1.6 tholo 123:
1.50 art 124: extern char *__progname;
125:
1.65 art 126: int verbose = 0;
1.87 aaron 127: int zflag = 0;
1.65 art 128:
1.21 millert 129: int
1.72 deraadt 130: main(int argc, char *argv[])
1.1 deraadt 131: {
1.102 deraadt 132: char errbuf[_POSIX2_LINE_MAX];
1.126 chl 133: int c, todo = 0, reps = 0;
1.102 deraadt 134: const char *errstr;
135: u_int interval = 0;
1.1 deraadt 136:
1.87 aaron 137: while ((c = getopt(argc, argv, "c:fiM:mN:stw:vz")) != -1) {
1.1 deraadt 138: switch (c) {
139: case 'c':
1.137 tedu 140: reps = strtonum(optarg, 0, INT_MAX, &errstr);
141: if (errstr)
142: errx(1, "-c %s: %s", optarg, errstr);
1.1 deraadt 143: break;
144: case 'f':
145: todo |= FORKSTAT;
146: break;
147: case 'i':
148: todo |= INTRSTAT;
149: break;
150: case 'M':
151: memf = optarg;
152: break;
153: case 'm':
154: todo |= MEMSTAT;
155: break;
156: case 'N':
157: nlistf = optarg;
158: break;
159: case 's':
160: todo |= SUMSTAT;
161: break;
162: case 't':
163: todo |= TIMESTAT;
164: break;
165: case 'w':
1.102 deraadt 166: interval = (u_int)strtonum(optarg, 0, 1000, &errstr);
167: if (errstr)
1.104 pedro 168: errx(1, "-w %s: %s", optarg, errstr);
1.1 deraadt 169: break;
1.65 art 170: case 'v':
171: verbose = 1;
172: break;
1.87 aaron 173: case 'z':
174: zflag = 1;
175: break;
1.1 deraadt 176: case '?':
177: default:
178: usage();
179: }
180: }
181: argc -= optind;
182: argv += optind;
183:
184: if (todo == 0)
185: todo = VMSTAT;
186:
1.56 angelos 187: if (nlistf != NULL || memf != NULL) {
188:
189: kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
190: if (kd == 0)
191: errx(1, "kvm_openfiles: %s", errbuf);
192:
193: if ((c = kvm_nlist(kd, namelist)) != 0) {
194:
195: if (c > 0) {
196: (void)fprintf(stderr,
197: "%s: undefined symbols:", __progname);
198: for (c = 0;
199: c < sizeof(namelist)/sizeof(namelist[0]);
200: c++)
201: if (namelist[c].n_type == 0)
202: fprintf(stderr, " %s",
203: namelist[c].n_name);
204: (void)fputc('\n', stderr);
205: exit(1);
206: } else
207: errx(1, "kvm_nlist: %s", kvm_geterr(kd));
208: }
1.115 lum 209: }
1.1 deraadt 210:
211: if (todo & VMSTAT) {
212: struct winsize winsize;
213:
1.6 tholo 214: dkinit(0); /* Initialize disk stats, no disks selected. */
215: argv = choosedrives(argv); /* Select disks. */
1.1 deraadt 216: winsize.ws_row = 0;
1.146 ! deraadt 217: if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &winsize) == 0) {
! 218: if (winsize.ws_row > 0)
! 219: winlines = winsize.ws_row;
! 220: }
1.1 deraadt 221:
222: }
1.25 deraadt 223:
1.1 deraadt 224: #define BACKWARD_COMPATIBILITY
225: #ifdef BACKWARD_COMPATIBILITY
226: if (*argv) {
1.102 deraadt 227: interval = (u_int)strtonum(*argv, 0, 1000, &errstr);
228: if (errstr)
1.137 tedu 229: errx(1, "interval %s: %s", *argv, errstr);
1.103 deraadt 230:
1.137 tedu 231: if (*++argv) {
232: reps = strtonum(*argv, 0, INT_MAX, &errstr);
233: if (errstr)
234: errx(1, "reps %s: %s", *argv, errstr);
235: }
1.1 deraadt 236: }
237: #endif
238:
239: if (interval) {
240: if (!reps)
241: reps = -1;
242: } else if (reps)
243: interval = 1;
244:
245: if (todo & FORKSTAT)
246: doforkst();
1.48 art 247: if (todo & MEMSTAT) {
1.1 deraadt 248: domem();
1.48 art 249: dopool();
250: }
1.1 deraadt 251: if (todo & SUMSTAT)
252: dosum();
253: if (todo & TIMESTAT)
254: dotimes();
255: if (todo & INTRSTAT)
256: dointr();
257: if (todo & VMSTAT)
258: dovmstat(interval, reps);
259: exit(0);
260: }
261:
262: char **
1.72 deraadt 263: choosedrives(char **argv)
1.1 deraadt 264: {
1.62 mpech 265: int i;
1.1 deraadt 266:
267: /*
268: * Choose drives to be displayed. Priority goes to (in order) drives
269: * supplied as arguments, default drives. If everything isn't filled
270: * in and there are drives not taken care of, display the first few
271: * that fit.
272: */
273: #define BACKWARD_COMPATIBILITY
274: for (ndrives = 0; *argv; ++argv) {
275: #ifdef BACKWARD_COMPATIBILITY
1.127 deraadt 276: if (isdigit((unsigned char)**argv))
1.1 deraadt 277: break;
278: #endif
279: for (i = 0; i < dk_ndrive; i++) {
280: if (strcmp(dr_name[i], *argv))
281: continue;
1.6 tholo 282: dk_select[i] = 1;
1.1 deraadt 283: ++ndrives;
284: break;
285: }
1.137 tedu 286: if (i == dk_ndrive)
287: errx(1, "invalid interval or drive name: %s", *argv);
1.1 deraadt 288: }
1.64 deraadt 289: for (i = 0; i < dk_ndrive && ndrives < 2; i++) {
1.6 tholo 290: if (dk_select[i])
1.1 deraadt 291: continue;
1.6 tholo 292: dk_select[i] = 1;
1.1 deraadt 293: ++ndrives;
294: }
295: return(argv);
296: }
297:
1.19 deraadt 298: time_t
1.72 deraadt 299: getuptime(void)
1.1 deraadt 300: {
1.124 guenther 301: struct timespec uptime;
302: time_t time_uptime, naptime;
1.1 deraadt 303:
1.124 guenther 304: if (nlistf == NULL && memf == NULL) {
305: if (clock_gettime(CLOCK_UPTIME, &uptime) == -1)
306: err(1, "clock_gettime");
307: return (uptime.tv_sec);
1.50 art 308: }
309:
1.124 guenther 310: kread(X_NAPTIME, &naptime, sizeof(naptime));
311: kread(X_TIME_UPTIME, &time_uptime, sizeof(time_uptime));
312: return (time_uptime - naptime);
1.1 deraadt 313: }
314:
1.105 cloder 315: int hz;
316: volatile sig_atomic_t hdrcnt;
1.1 deraadt 317:
318: void
1.72 deraadt 319: dovmstat(u_int interval, int reps)
1.1 deraadt 320: {
321: time_t uptime, halfuptime;
1.50 art 322: struct clockinfo clkinfo;
1.102 deraadt 323: struct vmtotal total;
1.1 deraadt 324: size_t size;
1.102 deraadt 325: int mib[2];
1.1 deraadt 326:
327: uptime = getuptime();
328: halfuptime = uptime / 2;
329: (void)signal(SIGCONT, needhdr);
330:
1.50 art 331: mib[0] = CTL_KERN;
332: mib[1] = KERN_CLOCKRATE;
333: size = sizeof(clkinfo);
1.146 ! deraadt 334: if (sysctl(mib, 2, &clkinfo, &size, NULL, 0) == -1) {
1.56 angelos 335: warn("could not read kern.clockrate");
1.50 art 336: return;
337: }
338: hz = clkinfo.stathz;
1.1 deraadt 339:
340: for (hdrcnt = 1;;) {
1.6 tholo 341: /* Read new disk statistics */
342: dkreadstats();
1.73 tdeval 343: if (!--hdrcnt || last.dk_ndrive != cur.dk_ndrive)
344: printhdr();
1.56 angelos 345: if (nlistf == NULL && memf == NULL) {
346: size = sizeof(struct uvmexp);
1.52 angelos 347: mib[0] = CTL_VM;
348: mib[1] = VM_UVMEXP;
1.146 ! deraadt 349: if (sysctl(mib, 2, &uvmexp, &size, NULL, 0) == -1) {
1.56 angelos 350: warn("could not get vm.uvmexp");
1.139 mmcc 351: memset(&uvmexp, 0, sizeof(struct uvmexp));
1.52 angelos 352: }
1.56 angelos 353: } else {
354: kread(X_UVMEXP, &uvmexp, sizeof(struct uvmexp));
1.52 angelos 355: }
1.1 deraadt 356: size = sizeof(total);
357: mib[0] = CTL_VM;
358: mib[1] = VM_METER;
1.146 ! deraadt 359: if (sysctl(mib, 2, &total, &size, NULL, 0) == -1) {
1.56 angelos 360: warn("could not read vm.vmmeter");
1.139 mmcc 361: memset(&total, 0, sizeof(total));
1.1 deraadt 362: }
1.142 mpi 363: (void)printf("%2u %3u", total.t_rq - 1, total.t_sl);
1.123 guenther 364: #define rate(x) ((unsigned)((((unsigned)x) + halfuptime) / uptime)) /* round */
1.102 deraadt 365: #define pgtok(a) ((a) * ((unsigned int)uvmexp.pagesize >> 10))
1.142 mpi 366: (void)printf("%5uM %6uM ",
367: pgtok(uvmexp.active + uvmexp.swpginuse) / 1024,
368: pgtok(uvmexp.free) / 1024);
1.106 sobrado 369: (void)printf("%4u ", rate(uvmexp.faults - ouvmexp.faults));
1.29 art 370: (void)printf("%3u ", rate(uvmexp.pdreact - ouvmexp.pdreact));
371: (void)printf("%3u ", rate(uvmexp.pageins - ouvmexp.pageins));
372: (void)printf("%3u %3u ",
373: rate(uvmexp.pdpageouts - ouvmexp.pdpageouts), 0);
374: (void)printf("%3u ", rate(uvmexp.pdscans - ouvmexp.pdscans));
375: dkstats();
1.64 deraadt 376: (void)printf("%4u %5u %4u ",
1.29 art 377: rate(uvmexp.intrs - ouvmexp.intrs),
378: rate(uvmexp.syscalls - ouvmexp.syscalls),
379: rate(uvmexp.swtch - ouvmexp.swtch));
1.1 deraadt 380: cpustats();
381: (void)printf("\n");
382: (void)fflush(stdout);
383: if (reps >= 0 && --reps <= 0)
384: break;
1.29 art 385: ouvmexp = uvmexp;
1.1 deraadt 386: uptime = interval;
387: /*
388: * We round upward to avoid losing low-frequency events
389: * (i.e., >= 1 per interval but < 1 per second).
390: */
1.14 deraadt 391: halfuptime = uptime == 1 ? 0 : (uptime + 1) / 2;
1.1 deraadt 392: (void)sleep(interval);
393: }
394: }
395:
1.21 millert 396: void
1.72 deraadt 397: printhdr(void)
1.1 deraadt 398: {
1.62 mpech 399: int i;
1.114 tedu 400: static int printedhdr;
401:
402: if (printedhdr && !isatty(STDOUT_FILENO))
403: return;
1.1 deraadt 404:
1.108 sobrado 405: (void)printf(" procs memory page%*s", 20, "");
1.6 tholo 406: if (ndrives > 0)
1.106 sobrado 407: (void)printf("%s %*straps cpu\n",
1.6 tholo 408: ((ndrives > 1) ? "disks" : "disk"),
1.106 sobrado 409: ((ndrives > 1) ? ndrives * 4 - 5 : 0), "");
1.1 deraadt 410: else
1.106 sobrado 411: (void)printf("%*s traps cpu\n",
1.6 tholo 412: ndrives * 3, "");
413:
1.142 mpi 414: (void)printf(" r s avm fre flt re pi po fr sr ");
1.1 deraadt 415: for (i = 0; i < dk_ndrive; i++)
1.6 tholo 416: if (dk_select[i])
1.67 ho 417: (void)printf("%c%c%c ", dr_name[i][0],
1.64 deraadt 418: dr_name[i][1],
1.1 deraadt 419: dr_name[i][strlen(dr_name[i]) - 1]);
1.79 tedu 420: (void)printf(" int sys cs us sy id\n");
1.1 deraadt 421: hdrcnt = winlines - 2;
1.114 tedu 422: printedhdr = 1;
1.1 deraadt 423: }
424:
425: /*
426: * Force a header to be prepended to the next output.
427: */
428: void
1.141 guenther 429: needhdr(__unused int signo)
1.1 deraadt 430: {
431:
432: hdrcnt = 1;
433: }
434:
435: void
1.72 deraadt 436: dotimes(void)
1.1 deraadt 437: {
438: u_int pgintime, rectime;
1.102 deraadt 439: size_t size;
1.52 angelos 440: int mib[2];
1.1 deraadt 441:
1.56 angelos 442: /* XXX Why are these set to 0 ? This doesn't look right. */
1.12 tholo 443: pgintime = 0;
444: rectime = 0;
1.56 angelos 445:
446: if (nlistf == NULL && memf == NULL) {
447: size = sizeof(struct uvmexp);
1.52 angelos 448: mib[0] = CTL_VM;
449: mib[1] = VM_UVMEXP;
1.146 ! deraadt 450: if (sysctl(mib, 2, &uvmexp, &size, NULL, 0) == -1) {
1.56 angelos 451: warn("could not read vm.uvmexp");
1.139 mmcc 452: memset(&uvmexp, 0, sizeof(struct uvmexp));
1.52 angelos 453: }
1.56 angelos 454: } else {
455: kread(X_UVMEXP, &uvmexp, sizeof(struct uvmexp));
1.52 angelos 456: }
457:
1.29 art 458: (void)printf("%u reactivates, %u total time (usec)\n",
459: uvmexp.pdreact, rectime);
1.89 miod 460: if (uvmexp.pdreact != 0)
461: (void)printf("average: %u usec / reclaim\n",
462: rectime / uvmexp.pdreact);
1.29 art 463: (void)printf("\n");
464: (void)printf("%u page ins, %u total time (msec)\n",
465: uvmexp.pageins, pgintime / 10);
1.89 miod 466: if (uvmexp.pageins != 0)
467: (void)printf("average: %8.1f msec / page in\n",
1.103 deraadt 468: pgintime / (uvmexp.pageins * 10.0));
1.1 deraadt 469: }
470:
1.21 millert 471: int
1.112 naddy 472: pct(int64_t top, int64_t bot)
1.1 deraadt 473: {
1.102 deraadt 474: int ans;
1.1 deraadt 475:
476: if (bot == 0)
477: return(0);
1.112 naddy 478: ans = top * 100 / bot;
1.1 deraadt 479: return (ans);
480: }
481:
482: void
1.72 deraadt 483: dosum(void)
1.1 deraadt 484: {
485: struct nchstats nchstats;
1.102 deraadt 486: int mib[2], nselcoll;
1.112 naddy 487: long long nchtotal;
1.52 angelos 488: size_t size;
1.1 deraadt 489:
1.56 angelos 490: if (nlistf == NULL && memf == NULL) {
491: size = sizeof(struct uvmexp);
1.52 angelos 492: mib[0] = CTL_VM;
493: mib[1] = VM_UVMEXP;
1.146 ! deraadt 494: if (sysctl(mib, 2, &uvmexp, &size, NULL, 0) == -1) {
1.56 angelos 495: warn("could not read vm.uvmexp");
1.139 mmcc 496: memset(&uvmexp, 0, sizeof(struct uvmexp));
1.52 angelos 497: }
1.56 angelos 498: } else {
499: kread(X_UVMEXP, &uvmexp, sizeof(struct uvmexp));
1.52 angelos 500: }
501:
1.32 art 502: /* vm_page constants */
1.35 hugh 503: (void)printf("%11u bytes per page\n", uvmexp.pagesize);
1.32 art 504:
505: /* vm_page counters */
1.35 hugh 506: (void)printf("%11u pages managed\n", uvmexp.npages);
507: (void)printf("%11u pages free\n", uvmexp.free);
508: (void)printf("%11u pages active\n", uvmexp.active);
509: (void)printf("%11u pages inactive\n", uvmexp.inactive);
510: (void)printf("%11u pages being paged out\n", uvmexp.paging);
511: (void)printf("%11u pages wired\n", uvmexp.wired);
1.71 art 512: (void)printf("%11u pages zeroed\n", uvmexp.zeropages);
1.35 hugh 513: (void)printf("%11u pages reserved for pagedaemon\n",
1.48 art 514: uvmexp.reserve_pagedaemon);
1.35 hugh 515: (void)printf("%11u pages reserved for kernel\n",
1.48 art 516: uvmexp.reserve_kernel);
1.32 art 517:
518: /* swap */
1.35 hugh 519: (void)printf("%11u swap pages\n", uvmexp.swpages);
520: (void)printf("%11u swap pages in use\n", uvmexp.swpginuse);
1.32 art 521:
522: /* stat counters */
1.35 hugh 523: (void)printf("%11u page faults\n", uvmexp.faults);
524: (void)printf("%11u traps\n", uvmexp.traps);
525: (void)printf("%11u interrupts\n", uvmexp.intrs);
526: (void)printf("%11u cpu context switches\n", uvmexp.swtch);
1.95 mickey 527: (void)printf("%11u fpu context switches\n", uvmexp.fpswtch);
1.35 hugh 528: (void)printf("%11u software interrupts\n", uvmexp.softs);
529: (void)printf("%11u syscalls\n", uvmexp.syscalls);
530: (void)printf("%11u pagein operations\n", uvmexp.pageins);
531: (void)printf("%11u forks\n", uvmexp.forks);
532: (void)printf("%11u forks where vmspace is shared\n",
1.48 art 533: uvmexp.forks_sharevm);
1.97 pedro 534: (void)printf("%11u kernel map entries\n", uvmexp.kmapent);
1.132 kettenis 535: (void)printf("%11u zeroed page hits\n", uvmexp.pga_zerohit);
536: (void)printf("%11u zeroed page misses\n", uvmexp.pga_zeromiss);
1.32 art 537:
538: /* daemon counters */
1.64 deraadt 539: (void)printf("%11u number of times the pagedaemon woke up\n",
1.48 art 540: uvmexp.pdwoke);
1.35 hugh 541: (void)printf("%11u revolutions of the clock hand\n", uvmexp.pdrevs);
542: (void)printf("%11u pages freed by pagedaemon\n", uvmexp.pdfreed);
543: (void)printf("%11u pages scanned by pagedaemon\n", uvmexp.pdscans);
544: (void)printf("%11u pages reactivated by pagedaemon\n", uvmexp.pdreact);
545: (void)printf("%11u busy pages found by pagedaemon\n", uvmexp.pdbusy);
1.29 art 546:
1.56 angelos 547: if (nlistf == NULL && memf == NULL) {
1.52 angelos 548: size = sizeof(nchstats);
549: mib[0] = CTL_KERN;
550: mib[1] = KERN_NCHSTATS;
1.146 ! deraadt 551: if (sysctl(mib, 2, &nchstats, &size, NULL, 0) == -1) {
1.56 angelos 552: warn("could not read kern.nchstats");
1.139 mmcc 553: memset(&nchstats, 0, sizeof(nchstats));
1.52 angelos 554: }
1.56 angelos 555: } else {
556: kread(X_NCHSTATS, &nchstats, sizeof(nchstats));
1.52 angelos 557: }
558:
1.1 deraadt 559: nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits +
560: nchstats.ncs_badhits + nchstats.ncs_falsehits +
561: nchstats.ncs_miss + nchstats.ncs_long;
1.112 naddy 562: (void)printf("%11lld total name lookups\n", nchtotal);
1.52 angelos 563: (void)printf("%11s cache hits (%d%% pos + %d%% neg) system %d%% "
564: "per-directory\n",
1.112 naddy 565: "", pct(nchstats.ncs_goodhits, nchtotal),
566: pct(nchstats.ncs_neghits, nchtotal),
567: pct(nchstats.ncs_pass2, nchtotal));
1.35 hugh 568: (void)printf("%11s deletions %d%%, falsehits %d%%, toolong %d%%\n", "",
1.112 naddy 569: pct(nchstats.ncs_badhits, nchtotal),
570: pct(nchstats.ncs_falsehits, nchtotal),
571: pct(nchstats.ncs_long, nchtotal));
1.52 angelos 572:
1.56 angelos 573: if (nlistf == NULL && memf == NULL) {
1.52 angelos 574: size = sizeof(nselcoll);
575: mib[0] = CTL_KERN;
576: mib[1] = KERN_NSELCOLL;
1.146 ! deraadt 577: if (sysctl(mib, 2, &nselcoll, &size, NULL, 0) == -1) {
1.56 angelos 578: warn("could not read kern.nselcoll");
1.52 angelos 579: nselcoll = 0;
580: }
1.56 angelos 581: } else {
582: kread(X_NSELCOLL, &nselcoll, sizeof(nselcoll));
1.52 angelos 583: }
1.50 art 584: (void)printf("%11d select collisions\n", nselcoll);
1.1 deraadt 585: }
586:
587: void
1.72 deraadt 588: doforkst(void)
1.1 deraadt 589: {
590: struct forkstat fks;
1.52 angelos 591: size_t size;
592: int mib[2];
593:
1.56 angelos 594: if (nlistf == NULL && memf == NULL) {
1.52 angelos 595: size = sizeof(struct forkstat);
596: mib[0] = CTL_KERN;
597: mib[1] = KERN_FORKSTAT;
1.146 ! deraadt 598: if (sysctl(mib, 2, &fks, &size, NULL, 0) == -1) {
1.56 angelos 599: warn("could not read kern.forkstat");
1.139 mmcc 600: memset(&fks, 0, sizeof(struct forkstat));
1.52 angelos 601: }
1.56 angelos 602: } else {
603: kread(X_FORKSTAT, &fks, sizeof(struct forkstat));
1.52 angelos 604: }
1.1 deraadt 605:
1.140 tedu 606: (void)printf("%u forks, %llu pages, average %.2f\n",
1.1 deraadt 607: fks.cntfork, fks.sizfork, (double)fks.sizfork / fks.cntfork);
1.140 tedu 608: (void)printf("%u vforks, %llu pages, average %.2f\n",
1.72 deraadt 609: fks.cntvfork, fks.sizvfork,
610: (double)fks.sizvfork / (fks.cntvfork ? fks.cntvfork : 1));
1.140 tedu 611: (void)printf("%u __tforks, %llu pages, average %.2f\n",
1.119 deraadt 612: fks.cnttfork, fks.siztfork,
613: (double)fks.siztfork / (fks.cnttfork ? fks.cnttfork : 1));
1.140 tedu 614: (void)printf("%u kthread creations, %llu pages, average %.2f\n",
1.72 deraadt 615: fks.cntkthread, fks.sizkthread,
616: (double)fks.sizkthread / (fks.cntkthread ? fks.cntkthread : 1));
1.1 deraadt 617: }
618:
619: void
1.72 deraadt 620: dkstats(void)
1.1 deraadt 621: {
1.62 mpech 622: int dn, state;
1.1 deraadt 623: double etime;
624:
1.6 tholo 625: /* Calculate disk stat deltas. */
626: dkswap();
1.1 deraadt 627: etime = 0;
628: for (state = 0; state < CPUSTATES; ++state) {
1.6 tholo 629: etime += cur.cp_time[state];
1.1 deraadt 630: }
631: if (etime == 0)
632: etime = 1;
633: etime /= hz;
634: for (dn = 0; dn < dk_ndrive; ++dn) {
1.6 tholo 635: if (!dk_select[dn])
1.1 deraadt 636: continue;
1.82 tedu 637: (void)printf("%3.0f ",
638: (cur.dk_rxfer[dn] + cur.dk_rxfer[dn]) / etime);
1.1 deraadt 639: }
640: }
641:
642: void
1.72 deraadt 643: cpustats(void)
1.1 deraadt 644: {
1.102 deraadt 645: double percent, total;
1.62 mpech 646: int state;
1.1 deraadt 647:
648: total = 0;
649: for (state = 0; state < CPUSTATES; ++state)
1.6 tholo 650: total += cur.cp_time[state];
1.1 deraadt 651: if (total)
1.101 otto 652: percent = 100 / total;
1.1 deraadt 653: else
1.101 otto 654: percent = 0;
655: (void)printf("%2.0f ", (cur.cp_time[CP_USER] + cur.cp_time[CP_NICE]) * percent);
656: (void)printf("%2.0f ", (cur.cp_time[CP_SYS] + cur.cp_time[CP_INTR]) * percent);
657: (void)printf("%2.0f", cur.cp_time[CP_IDLE] * percent);
1.1 deraadt 658: }
659:
660: void
1.72 deraadt 661: dointr(void)
1.74 art 662: {
1.102 deraadt 663: int nintr, mib[4], i;
664: char intrname[128];
665: u_int64_t inttotal;
1.74 art 666: time_t uptime;
667: size_t siz;
668:
1.93 miod 669: if (nlistf != NULL || memf != NULL) {
670: errx(1,
671: "interrupt statistics are only available on live kernels");
672: }
673:
1.74 art 674: uptime = getuptime();
675:
676: mib[0] = CTL_KERN;
677: mib[1] = KERN_INTRCNT;
678: mib[2] = KERN_INTRCNT_NUM;
679: siz = sizeof(nintr);
1.146 ! deraadt 680: if (sysctl(mib, 3, &nintr, &siz, NULL, 0) == -1) {
1.74 art 681: warnx("could not read kern.intrcnt.nintrcnt");
682: return;
683: }
684:
1.91 deraadt 685: (void)printf("%-16s %20s %8s\n", "interrupt", "total", "rate");
1.87 aaron 686:
1.74 art 687: inttotal = 0;
688: for (i = 0; i < nintr; i++) {
1.87 aaron 689: char name[128];
1.141 guenther 690: uint64_t cnt;
1.87 aaron 691: int vector;
1.74 art 692:
693: mib[0] = CTL_KERN;
694: mib[1] = KERN_INTRCNT;
695: mib[2] = KERN_INTRCNT_NAME;
696: mib[3] = i;
1.87 aaron 697: siz = sizeof(name);
1.146 ! deraadt 698: if (sysctl(mib, 4, name, &siz, NULL, 0) == -1) {
1.74 art 699: warnx("could not read kern.intrcnt.name.%d", i);
1.87 aaron 700: return;
701: }
702:
703: mib[0] = CTL_KERN;
704: mib[1] = KERN_INTRCNT;
705: mib[2] = KERN_INTRCNT_VECTOR;
706: mib[3] = i;
707: siz = sizeof(vector);
1.146 ! deraadt 708: if (sysctl(mib, 4, &vector, &siz, NULL, 0) == -1) {
1.87 aaron 709: strlcpy(intrname, name, sizeof(intrname));
710: } else {
711: snprintf(intrname, sizeof(intrname), "irq%d/%s",
712: vector, name);
1.74 art 713: }
714:
715: mib[0] = CTL_KERN;
716: mib[1] = KERN_INTRCNT;
717: mib[2] = KERN_INTRCNT_CNT;
718: mib[3] = i;
719: siz = sizeof(cnt);
1.146 ! deraadt 720: if (sysctl(mib, 4, &cnt, &siz, NULL, 0) == -1) {
1.75 grange 721: warnx("could not read kern.intrcnt.cnt.%d", i);
1.90 deraadt 722: return;
1.74 art 723: }
1.90 deraadt 724:
1.87 aaron 725: if (cnt || zflag)
1.91 deraadt 726: (void)printf("%-16.16s %20llu %8llu\n", intrname,
1.90 deraadt 727: cnt, cnt / uptime);
1.74 art 728: inttotal += cnt;
729: }
730:
1.91 deraadt 731: (void)printf("%-16s %20llu %8llu\n", "Total", inttotal,
1.90 deraadt 732: inttotal / uptime);
1.1 deraadt 733: }
734:
735: /*
736: * These names are defined in <sys/malloc.h>.
737: */
1.101 otto 738: const char *kmemnames[] = INITKMEMNAMES;
1.1 deraadt 739:
740: void
1.72 deraadt 741: domem(void)
1.1 deraadt 742: {
1.102 deraadt 743: struct kmembuckets buckets[MINBUCKET + 16], *kp;
744: struct kmemstats kmemstats[M_LAST], *ks;
745: int i, j, len, size, first, mib[4];
1.50 art 746: u_long totuse = 0, totfree = 0;
1.102 deraadt 747: char buf[BUFSIZ], *bufp, *ap;
1.141 guenther 748: unsigned long long totreq = 0;
1.101 otto 749: const char *name;
1.50 art 750: size_t siz;
751:
752: if (memf == NULL && nlistf == NULL) {
1.53 deraadt 753: mib[0] = CTL_KERN;
1.50 art 754: mib[1] = KERN_MALLOCSTATS;
755: mib[2] = KERN_MALLOC_BUCKETS;
756: siz = sizeof(buf);
1.146 ! deraadt 757: if (sysctl(mib, 3, buf, &siz, NULL, 0) == -1) {
1.56 angelos 758: warnx("could not read kern.malloc.buckets");
1.50 art 759: return;
760: }
761:
762: bufp = buf;
763: mib[2] = KERN_MALLOC_BUCKET;
764: siz = sizeof(struct kmembuckets);
765: i = 0;
766: while ((ap = strsep(&bufp, ",")) != NULL) {
1.138 deraadt 767: const char *errstr;
768:
769: mib[3] = strtonum(ap, 0, INT_MAX, &errstr);
770: if (errstr) {
771: warnx("kernel lied about %d being a number", mib[3]);
772: return;
773: }
1.50 art 774:
775: if (sysctl(mib, 4, &buckets[MINBUCKET + i], &siz,
1.146 ! deraadt 776: NULL, 0) == -1) {
1.56 angelos 777: warn("could not read kern.malloc.bucket.%d", mib[3]);
1.50 art 778: return;
779: }
780: i++;
781: }
782: } else {
1.53 deraadt 783: kread(X_KMEMBUCKETS, buckets, sizeof(buckets));
1.50 art 784: }
1.1 deraadt 785:
1.18 kstailey 786: for (first = 1, i = MINBUCKET, kp = &buckets[i]; i < MINBUCKET + 16;
787: i++, kp++) {
1.65 art 788: if (kp->kb_calls == 0 && !verbose)
1.1 deraadt 789: continue;
1.18 kstailey 790: if (first) {
791: (void)printf("Memory statistics by bucket size\n");
792: (void)printf(
1.50 art 793: " Size In Use Free Requests HighWater Couldfree\n");
1.18 kstailey 794: first = 0;
795: }
1.1 deraadt 796: size = 1 << i;
1.60 art 797: (void)printf("%8d %8llu %6llu %18llu %7llu %10llu\n", size,
798: (unsigned long long)(kp->kb_total - kp->kb_totalfree),
799: (unsigned long long)kp->kb_totalfree,
800: (unsigned long long)kp->kb_calls,
801: (unsigned long long)kp->kb_highwat,
802: (unsigned long long)kp->kb_couldfree);
1.1 deraadt 803: totfree += size * kp->kb_totalfree;
1.18 kstailey 804: }
805:
806: /*
807: * If kmem statistics are not being gathered by the kernel,
808: * first will still be 1.
809: */
810: if (first) {
811: printf(
812: "Kmem statistics are not being gathered by the kernel.\n");
813: return;
1.1 deraadt 814: }
815:
1.52 angelos 816: if (memf == NULL && nlistf == NULL) {
1.139 mmcc 817: memset(kmemstats, 0, sizeof(kmemstats));
1.52 angelos 818: for (i = 0; i < M_LAST; i++) {
1.53 deraadt 819: mib[0] = CTL_KERN;
1.52 angelos 820: mib[1] = KERN_MALLOCSTATS;
821: mib[2] = KERN_MALLOC_KMEMSTATS;
822: mib[3] = i;
823: siz = sizeof(struct kmemstats);
824:
1.103 deraadt 825: /*
1.52 angelos 826: * Skip errors -- these are presumed to be unallocated
827: * entries.
828: */
1.146 ! deraadt 829: if (sysctl(mib, 4, &kmemstats[i], &siz, NULL, 0) == -1)
1.52 angelos 830: continue;
831: }
832: } else {
833: kread(X_KMEMSTAT, kmemstats, sizeof(kmemstats));
834: }
835:
1.1 deraadt 836: (void)printf("\nMemory usage type by bucket size\n");
837: (void)printf(" Size Type(s)\n");
838: kp = &buckets[MINBUCKET];
839: for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1, kp++) {
840: if (kp->kb_calls == 0)
841: continue;
842: first = 1;
843: len = 8;
844: for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) {
845: if (ks->ks_calls == 0)
846: continue;
847: if ((ks->ks_size & j) == 0)
848: continue;
849: name = kmemnames[i] ? kmemnames[i] : "undefined";
850: len += 2 + strlen(name);
851: if (first)
852: printf("%8d %s", j, name);
853: else
854: printf(",");
855: if (len >= 80) {
856: printf("\n\t ");
857: len = 10 + strlen(name);
858: }
859: if (!first)
860: printf(" %s", name);
861: first = 0;
862: }
863: printf("\n");
864: }
865:
866: (void)printf(
1.26 deraadt 867: "\nMemory statistics by type Type Kern\n");
1.1 deraadt 868: (void)printf(
1.26 deraadt 869: " Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)\n");
1.1 deraadt 870: for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) {
871: if (ks->ks_calls == 0)
872: continue;
1.24 mickey 873: (void)printf("%14s%6ld%6ldK%7ldK%6ldK%9ld%5u%6u",
1.1 deraadt 874: kmemnames[i] ? kmemnames[i] : "undefined",
875: ks->ks_inuse, (ks->ks_memuse + 1023) / 1024,
876: (ks->ks_maxused + 1023) / 1024,
877: (ks->ks_limit + 1023) / 1024, ks->ks_calls,
878: ks->ks_limblocks, ks->ks_mapblocks);
879: first = 1;
880: for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) {
881: if ((ks->ks_size & j) == 0)
882: continue;
883: if (first)
884: printf(" %d", j);
885: else
886: printf(",%d", j);
887: first = 0;
888: }
889: printf("\n");
890: totuse += ks->ks_memuse;
891: totreq += ks->ks_calls;
892: }
893: (void)printf("\nMemory Totals: In Use Free Requests\n");
1.141 guenther 894: (void)printf(" %7luK %6luK %8llu\n",
1.1 deraadt 895: (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq);
896: }
897:
1.54 art 898: static void
1.129 dlg 899: print_pool(struct kinfo_pool *pp, char *name)
1.54 art 900: {
901: static int first = 1;
1.102 deraadt 902: char maxp[32];
1.54 art 903: int ovflw;
904:
905: if (first) {
906: (void)printf("Memory resource pool statistics\n");
907: (void)printf(
908: "%-11s%5s%9s%5s%9s%6s%6s%6s%6s%6s%6s%5s\n",
909: "Name",
910: "Size",
911: "Requests",
912: "Fail",
1.110 otto 913: "InUse",
1.54 art 914: "Pgreq",
915: "Pgrel",
916: "Npage",
917: "Hiwat",
918: "Minpg",
919: "Maxpg",
920: "Idle");
921: first = 0;
922: }
1.65 art 923:
924: /* Skip unused pools unless verbose output. */
925: if (pp->pr_nget == 0 && !verbose)
926: return;
927:
1.54 art 928: if (pp->pr_maxpages == UINT_MAX)
1.69 deraadt 929: snprintf(maxp, sizeof maxp, "inf");
1.54 art 930: else
1.69 deraadt 931: snprintf(maxp, sizeof maxp, "%u", pp->pr_maxpages);
1.54 art 932: /*
933: * Print single word. `ovflow' is number of characters didn't fit
934: * on the last word. `fmt' is a format string to print this word.
935: * It must contain asterisk for field width. `width' is a width
936: * occupied by this word. `fixed' is a number of constant chars in
937: * `fmt'. `val' is a value to be printed using format string `fmt'.
938: */
939: #define PRWORD(ovflw, fmt, width, fixed, val) do { \
940: (ovflw) += printf((fmt), \
941: (width) - (fixed) - (ovflw) > 0 ? \
942: (width) - (fixed) - (ovflw) : 0, \
943: (val)) - (width); \
944: if ((ovflw) < 0) \
945: (ovflw) = 0; \
946: } while (/* CONSTCOND */0)
947:
948: ovflw = 0;
949: PRWORD(ovflw, "%-*s", 11, 0, name);
950: PRWORD(ovflw, " %*u", 5, 1, pp->pr_size);
951: PRWORD(ovflw, " %*lu", 9, 1, pp->pr_nget);
952: PRWORD(ovflw, " %*lu", 5, 1, pp->pr_nfail);
1.110 otto 953: PRWORD(ovflw, " %*lu", 9, 1, pp->pr_nget - pp->pr_nput);
1.54 art 954: PRWORD(ovflw, " %*lu", 6, 1, pp->pr_npagealloc);
955: PRWORD(ovflw, " %*lu", 6, 1, pp->pr_npagefree);
956: PRWORD(ovflw, " %*d", 6, 1, pp->pr_npages);
957: PRWORD(ovflw, " %*d", 6, 1, pp->pr_hiwat);
958: PRWORD(ovflw, " %*d", 6, 1, pp->pr_minpages);
959: PRWORD(ovflw, " %*s", 6, 1, maxp);
1.103 deraadt 960: PRWORD(ovflw, " %*lu\n", 5, 1, pp->pr_nidle);
1.54 art 961: }
962:
1.55 art 963: static void dopool_kvm(void);
964: static void dopool_sysctl(void);
965:
1.48 art 966: void
967: dopool(void)
968: {
1.55 art 969: if (nlistf == NULL && memf == NULL)
970: dopool_sysctl();
971: else
972: dopool_kvm();
973: }
974:
975: void
976: dopool_sysctl(void)
977: {
1.117 chl 978: int mib[4], npools, i;
1.63 art 979: long total = 0, inuse = 0;
1.129 dlg 980: struct kinfo_pool pool;
1.55 art 981: size_t size;
982:
983: mib[0] = CTL_KERN;
984: mib[1] = KERN_POOL;
985: mib[2] = KERN_POOL_NPOOLS;
986: size = sizeof(npools);
1.146 ! deraadt 987: if (sysctl(mib, 3, &npools, &size, NULL, 0) == -1) {
1.92 pedro 988: warn("can't figure out number of pools in kernel");
1.55 art 989: return;
990: }
991:
992: for (i = 1; npools; i++) {
993: char name[32];
994:
995: mib[0] = CTL_KERN;
996: mib[1] = KERN_POOL;
997: mib[2] = KERN_POOL_POOL;
998: mib[3] = i;
1.129 dlg 999: size = sizeof(pool);
1.146 ! deraadt 1000: if (sysctl(mib, 4, &pool, &size, NULL, 0) == -1) {
1.55 art 1001: if (errno == ENOENT)
1002: continue;
1.92 pedro 1003: warn("error getting pool");
1.55 art 1004: return;
1005: }
1006: npools--;
1007: mib[2] = KERN_POOL_NAME;
1008: size = sizeof(name);
1.146 ! deraadt 1009: if (sysctl(mib, 4, &name, &size, NULL, 0) == -1) {
1.92 pedro 1010: warn("error getting pool name");
1.55 art 1011: return;
1012: }
1013: print_pool(&pool, name);
1.63 art 1014:
1015: inuse += (pool.pr_nget - pool.pr_nput) * pool.pr_size;
1.129 dlg 1016: total += pool.pr_npages * pool.pr_pgsize;
1.55 art 1017: }
1.63 art 1018:
1019: inuse /= 1024;
1020: total /= 1024;
1021: printf("\nIn use %ldK, total allocated %ldK; utilization %.1f%%\n",
1022: inuse, total, (double)(100 * inuse) / total);
1.55 art 1023: }
1024:
1025: void
1026: dopool_kvm(void)
1027: {
1.120 tedu 1028: SIMPLEQ_HEAD(,pool) pool_head;
1.48 art 1029: struct pool pool, *pp = &pool;
1.129 dlg 1030: struct kinfo_pool pi;
1.102 deraadt 1031: long total = 0, inuse = 0;
1032: u_long addr;
1.48 art 1033:
1034: kread(X_POOLHEAD, &pool_head, sizeof(pool_head));
1.120 tedu 1035: addr = (u_long)SIMPLEQ_FIRST(&pool_head);
1.48 art 1036:
1.55 art 1037: while (addr != 0) {
1.54 art 1038: char name[32];
1.56 angelos 1039:
1.48 art 1040: if (kvm_read(kd, addr, (void *)pp, sizeof *pp) != sizeof *pp) {
1041: (void)fprintf(stderr,
1042: "vmstat: pool chain trashed: %s\n",
1043: kvm_geterr(kd));
1044: exit(1);
1045: }
1.102 deraadt 1046: if (kvm_read(kd, (u_long)pp->pr_wchan, name, sizeof name) < 0) {
1.48 art 1047: (void)fprintf(stderr,
1048: "vmstat: pool name trashed: %s\n",
1049: kvm_geterr(kd));
1050: exit(1);
1051: }
1052: name[31] = '\0';
1053:
1.129 dlg 1054: memset(&pi, 0, sizeof(pi));
1055: pi.pr_size = pp->pr_size;
1.135 tedu 1056: pi.pr_pgsize = pp->pr_pgsize;
1.129 dlg 1057: pi.pr_itemsperpage = pp->pr_itemsperpage;
1.130 dlg 1058: pi.pr_npages = pp->pr_npages;
1.129 dlg 1059: pi.pr_minpages = pp->pr_minpages;
1060: pi.pr_maxpages = pp->pr_maxpages;
1061: pi.pr_hardlimit = pp->pr_hardlimit;
1062: pi.pr_nout = pp->pr_nout;
1063: pi.pr_nitems = pp->pr_nitems;
1064: pi.pr_nget = pp->pr_nget;
1065: pi.pr_nput = pp->pr_nput;
1066: pi.pr_nfail = pp->pr_nfail;
1067: pi.pr_npagealloc = pp->pr_npagealloc;
1068: pi.pr_npagefree = pp->pr_npagefree;
1069: pi.pr_hiwat = pp->pr_hiwat;
1070: pi.pr_nidle = pp->pr_nidle;
1071:
1072: print_pool(&pi, name);
1.48 art 1073:
1.129 dlg 1074: inuse += (pi.pr_nget - pi.pr_nput) * pi.pr_size;
1075: total += pi.pr_npages * pi.pr_pgsize;
1.56 angelos 1076:
1.120 tedu 1077: addr = (u_long)SIMPLEQ_NEXT(pp, pr_poollist);
1.48 art 1078: }
1079:
1080: inuse /= 1024;
1081: total /= 1024;
1082: printf("\nIn use %ldK, total allocated %ldK; utilization %.1f%%\n",
1083: inuse, total, (double)(100 * inuse) / total);
1084: }
1085:
1.1 deraadt 1086: /*
1087: * kread reads something from the kernel, given its nlist index.
1088: */
1089: void
1.72 deraadt 1090: kread(int nlx, void *addr, size_t size)
1.1 deraadt 1091: {
1092: char *sym;
1093:
1094: if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) {
1095: sym = namelist[nlx].n_name;
1096: if (*sym == '_')
1097: ++sym;
1.50 art 1098: errx(1, "symbol %s not defined", sym);
1.1 deraadt 1099: }
1100: if (kvm_read(kd, namelist[nlx].n_value, addr, size) != size) {
1101: sym = namelist[nlx].n_name;
1102: if (*sym == '_')
1103: ++sym;
1.50 art 1104: errx(1, "%s: %s", sym, kvm_geterr(kd));
1.1 deraadt 1105: }
1106: }
1107:
1108: void
1.72 deraadt 1109: usage(void)
1.1 deraadt 1110: {
1.88 jmc 1111: (void)fprintf(stderr, "usage: %s [-fimstvz] [-c count] [-M core] "
1.109 sobrado 1112: "[-N system] [-w wait] [disk ...]\n", __progname);
1.1 deraadt 1113: exit(1);
1114: }
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