1 /*
2 * Copyright (c) 1980, 1986, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #ifndef lint
31 static const char copyright[] =
32 "@(#) Copyright (c) 1980, 1986, 1991, 1993\n\
33 The Regents of the University of California. All rights reserved.\n";
34 #endif /* not lint */
35
36 #if 0
37 #ifndef lint
38 static char sccsid[] = "@(#)vmstat.c 8.1 (Berkeley) 6/6/93";
39 #endif /* not lint */
40 #endif
41
42 #include <sys/cdefs.h>
43 __FBSDID("$FreeBSD$");
44
45 #include <sys/param.h>
46 #include <sys/proc.h>
47 #include <sys/uio.h>
48 #include <sys/namei.h>
49 #include <sys/malloc.h>
50 #include <sys/signal.h>
51 #include <sys/fcntl.h>
52 #include <sys/ioctl.h>
53 #include <sys/resource.h>
54 #include <sys/sysctl.h>
55 #include <sys/time.h>
56 #include <sys/vmmeter.h>
57 #include <sys/pcpu.h>
58
59 #include <vm/vm_param.h>
60
61 #include <ctype.h>
62 #include <devstat.h>
63 #include <err.h>
64 #include <errno.h>
65 #include <inttypes.h>
66 #include <kvm.h>
67 #include <limits.h>
68 #include <memstat.h>
69 #include <nlist.h>
70 #include <paths.h>
71 #include <stdio.h>
72 #include <stdlib.h>
73 #include <string.h>
74 #include <sysexits.h>
75 #include <time.h>
76 #include <unistd.h>
77 #include <libutil.h>
78
79 static char da[] = "da";
80
81 static struct nlist namelist[] = {
82 #define X_SUM 0
83 { "_cnt" },
84 #define X_HZ 1
85 { "_hz" },
86 #define X_STATHZ 2
87 { "_stathz" },
88 #define X_NCHSTATS 3
89 { "_nchstats" },
90 #define X_INTRNAMES 4
91 { "_intrnames" },
92 #define X_SINTRNAMES 5
93 { "_sintrnames" },
94 #define X_INTRCNT 6
95 { "_intrcnt" },
96 #define X_SINTRCNT 7
97 { "_sintrcnt" },
98 #ifdef notyet
99 #define X_DEFICIT XXX
100 { "_deficit" },
101 #define X_REC XXX
102 { "_rectime" },
103 #define X_PGIN XXX
104 { "_pgintime" },
105 #define X_XSTATS XXX
106 { "_xstats" },
107 #define X_END XXX
108 #else
109 #define X_END 8
110 #endif
111 { "" },
112 };
113
114 static struct statinfo cur, last;
115 static int num_devices, maxshowdevs;
116 static long generation;
117 static struct device_selection *dev_select;
118 static int num_selected;
119 static struct devstat_match *matches;
120 static int num_matches = 0;
121 static int num_devices_specified, num_selections;
122 static long select_generation;
123 static char **specified_devices;
124 static devstat_select_mode select_mode;
125
126 static struct vmmeter sum, osum;
127
128 #define VMSTAT_DEFAULT_LINES 20 /* Default number of `winlines'. */
129 volatile sig_atomic_t wresized; /* Tty resized, when non-zero. */
130 static int winlines = VMSTAT_DEFAULT_LINES; /* Current number of tty rows. */
131
132 static int aflag;
133 static int nflag;
134 static int Pflag;
135 static int hflag;
136
137 static kvm_t *kd;
138
139 #define FORKSTAT 0x01
140 #define INTRSTAT 0x02
141 #define MEMSTAT 0x04
142 #define SUMSTAT 0x08
143 #define TIMESTAT 0x10
144 #define VMSTAT 0x20
145 #define ZMEMSTAT 0x40
146
147 static void cpustats(void);
148 static void pcpustats(int, u_long, int);
149 static void devstats(void);
150 static void doforkst(void);
151 static void dointr(void);
152 static void dosum(void);
153 static void dovmstat(unsigned int, int);
154 static void domemstat_malloc(void);
155 static void domemstat_zone(void);
156 static void kread(int, void *, size_t);
157 static void kreado(int, void *, size_t, size_t);
158 static char *kgetstr(const char *);
159 static void needhdr(int);
160 static void needresize(int);
161 static void doresize(void);
162 static void printhdr(int, u_long);
163 static void usage(void);
164
165 static long pct(long, long);
166 static long getuptime(void);
167
168 static char **getdrivedata(char **);
169
170 int
main(int argc,char * argv[])171 main(int argc, char *argv[])
172 {
173 int c, todo;
174 unsigned int interval;
175 float f;
176 int reps;
177 char *memf, *nlistf;
178 char errbuf[_POSIX2_LINE_MAX];
179
180 memf = nlistf = NULL;
181 interval = reps = todo = 0;
182 maxshowdevs = 2;
183 hflag = isatty(1);
184 while ((c = getopt(argc, argv, "ac:fhHiM:mN:n:Pp:stw:z")) != -1) {
185 switch (c) {
186 case 'a':
187 aflag++;
188 break;
189 case 'c':
190 reps = atoi(optarg);
191 break;
192 case 'P':
193 Pflag++;
194 break;
195 case 'f':
196 todo |= FORKSTAT;
197 break;
198 case 'h':
199 hflag = 1;
200 break;
201 case 'H':
202 hflag = 0;
203 break;
204 case 'i':
205 todo |= INTRSTAT;
206 break;
207 case 'M':
208 memf = optarg;
209 break;
210 case 'm':
211 todo |= MEMSTAT;
212 break;
213 case 'N':
214 nlistf = optarg;
215 break;
216 case 'n':
217 nflag = 1;
218 maxshowdevs = atoi(optarg);
219 if (maxshowdevs < 0)
220 errx(1, "number of devices %d is < 0",
221 maxshowdevs);
222 break;
223 case 'p':
224 if (devstat_buildmatch(optarg, &matches, &num_matches) != 0)
225 errx(1, "%s", devstat_errbuf);
226 break;
227 case 's':
228 todo |= SUMSTAT;
229 break;
230 case 't':
231 #ifdef notyet
232 todo |= TIMESTAT;
233 #else
234 errx(EX_USAGE, "sorry, -t is not (re)implemented yet");
235 #endif
236 break;
237 case 'w':
238 /* Convert to milliseconds. */
239 f = atof(optarg);
240 interval = f * 1000;
241 break;
242 case 'z':
243 todo |= ZMEMSTAT;
244 break;
245 case '?':
246 default:
247 usage();
248 }
249 }
250 argc -= optind;
251 argv += optind;
252
253 if (todo == 0)
254 todo = VMSTAT;
255
256 if (memf != NULL) {
257 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
258 if (kd == NULL)
259 errx(1, "kvm_openfiles: %s", errbuf);
260 }
261
262 if (kd != NULL && (c = kvm_nlist(kd, namelist)) != 0) {
263 if (c > 0) {
264 warnx("undefined symbols:");
265 for (c = 0;
266 c < (int)(sizeof(namelist)/sizeof(namelist[0]));
267 c++)
268 if (namelist[c].n_type == 0)
269 (void)fprintf(stderr, " %s",
270 namelist[c].n_name);
271 (void)fputc('\n', stderr);
272 } else
273 warnx("kvm_nlist: %s", kvm_geterr(kd));
274 exit(1);
275 }
276 if (kd && Pflag)
277 errx(1, "Cannot use -P with crash dumps");
278
279 if (todo & VMSTAT) {
280 /*
281 * Make sure that the userland devstat version matches the
282 * kernel devstat version. If not, exit and print a
283 * message informing the user of his mistake.
284 */
285 if (devstat_checkversion(NULL) < 0)
286 errx(1, "%s", devstat_errbuf);
287
288
289 argv = getdrivedata(argv);
290 }
291
292 #define BACKWARD_COMPATIBILITY
293 #ifdef BACKWARD_COMPATIBILITY
294 if (*argv) {
295 f = atof(*argv);
296 interval = f * 1000;
297 if (*++argv)
298 reps = atoi(*argv);
299 }
300 #endif
301
302 if (interval) {
303 if (!reps)
304 reps = -1;
305 } else if (reps)
306 interval = 1 * 1000;
307
308 if (todo & FORKSTAT)
309 doforkst();
310 if (todo & MEMSTAT)
311 domemstat_malloc();
312 if (todo & ZMEMSTAT)
313 domemstat_zone();
314 if (todo & SUMSTAT)
315 dosum();
316 #ifdef notyet
317 if (todo & TIMESTAT)
318 dotimes();
319 #endif
320 if (todo & INTRSTAT)
321 dointr();
322 if (todo & VMSTAT)
323 dovmstat(interval, reps);
324 exit(0);
325 }
326
327 static int
mysysctl(const char * name,void * oldp,size_t * oldlenp,void * newp,size_t newlen)328 mysysctl(const char *name, void *oldp, size_t *oldlenp,
329 void *newp, size_t newlen)
330 {
331 int error;
332
333 error = sysctlbyname(name, oldp, oldlenp, newp, newlen);
334 if (error != 0 && errno != ENOMEM)
335 err(1, "sysctl(%s)", name);
336 return (error);
337 }
338
339 static char **
getdrivedata(char ** argv)340 getdrivedata(char **argv)
341 {
342 if ((num_devices = devstat_getnumdevs(NULL)) < 0)
343 errx(1, "%s", devstat_errbuf);
344
345 cur.dinfo = (struct devinfo *)calloc(1, sizeof(struct devinfo));
346 last.dinfo = (struct devinfo *)calloc(1, sizeof(struct devinfo));
347
348 if (devstat_getdevs(NULL, &cur) == -1)
349 errx(1, "%s", devstat_errbuf);
350
351 num_devices = cur.dinfo->numdevs;
352 generation = cur.dinfo->generation;
353
354 specified_devices = (char **)malloc(sizeof(char *));
355 for (num_devices_specified = 0; *argv; ++argv) {
356 if (isdigit(**argv))
357 break;
358 num_devices_specified++;
359 specified_devices = (char **)realloc(specified_devices,
360 sizeof(char *) *
361 num_devices_specified);
362 specified_devices[num_devices_specified - 1] = *argv;
363 }
364 dev_select = NULL;
365
366 if (nflag == 0 && maxshowdevs < num_devices_specified)
367 maxshowdevs = num_devices_specified;
368
369 /*
370 * People are generally only interested in disk statistics when
371 * they're running vmstat. So, that's what we're going to give
372 * them if they don't specify anything by default. We'll also give
373 * them any other random devices in the system so that we get to
374 * maxshowdevs devices, if that many devices exist. If the user
375 * specifies devices on the command line, either through a pattern
376 * match or by naming them explicitly, we will give the user only
377 * those devices.
378 */
379 if ((num_devices_specified == 0) && (num_matches == 0)) {
380 if (devstat_buildmatch(da, &matches, &num_matches) != 0)
381 errx(1, "%s", devstat_errbuf);
382
383 select_mode = DS_SELECT_ADD;
384 } else
385 select_mode = DS_SELECT_ONLY;
386
387 /*
388 * At this point, selectdevs will almost surely indicate that the
389 * device list has changed, so we don't look for return values of 0
390 * or 1. If we get back -1, though, there is an error.
391 */
392 if (devstat_selectdevs(&dev_select, &num_selected, &num_selections,
393 &select_generation, generation, cur.dinfo->devices,
394 num_devices, matches, num_matches, specified_devices,
395 num_devices_specified, select_mode,
396 maxshowdevs, 0) == -1)
397 errx(1, "%s", devstat_errbuf);
398
399 return(argv);
400 }
401
402 static long
getuptime(void)403 getuptime(void)
404 {
405 struct timespec sp;
406
407 (void)clock_gettime(CLOCK_MONOTONIC, &sp);
408
409 return(sp.tv_sec);
410 }
411
412 static void
fill_pcpu(struct pcpu *** pcpup,int * maxcpup)413 fill_pcpu(struct pcpu ***pcpup, int* maxcpup)
414 {
415 struct pcpu **pcpu;
416
417 int maxcpu, i;
418
419 *pcpup = NULL;
420
421 if (kd == NULL)
422 return;
423
424 maxcpu = kvm_getmaxcpu(kd);
425 if (maxcpu < 0)
426 errx(1, "kvm_getmaxcpu: %s", kvm_geterr(kd));
427
428 pcpu = calloc(maxcpu, sizeof(struct pcpu *));
429 if (pcpu == NULL)
430 err(1, "calloc");
431
432 for (i = 0; i < maxcpu; i++) {
433 pcpu[i] = kvm_getpcpu(kd, i);
434 if (pcpu[i] == (struct pcpu *)-1)
435 errx(1, "kvm_getpcpu: %s", kvm_geterr(kd));
436 }
437
438 *maxcpup = maxcpu;
439 *pcpup = pcpu;
440 }
441
442 static void
free_pcpu(struct pcpu ** pcpu,int maxcpu)443 free_pcpu(struct pcpu **pcpu, int maxcpu)
444 {
445 int i;
446
447 for (i = 0; i < maxcpu; i++)
448 free(pcpu[i]);
449 free(pcpu);
450 }
451
452 static void
fill_vmmeter(struct vmmeter * vmmp)453 fill_vmmeter(struct vmmeter *vmmp)
454 {
455 struct pcpu **pcpu;
456 int maxcpu, i;
457
458 if (kd != NULL) {
459 kread(X_SUM, vmmp, sizeof(*vmmp));
460 fill_pcpu(&pcpu, &maxcpu);
461 for (i = 0; i < maxcpu; i++) {
462 if (pcpu[i] == NULL)
463 continue;
464 #define ADD_FROM_PCPU(i, name) \
465 vmmp->name += pcpu[i]->pc_cnt.name
466 ADD_FROM_PCPU(i, v_swtch);
467 ADD_FROM_PCPU(i, v_trap);
468 ADD_FROM_PCPU(i, v_syscall);
469 ADD_FROM_PCPU(i, v_intr);
470 ADD_FROM_PCPU(i, v_soft);
471 ADD_FROM_PCPU(i, v_vm_faults);
472 ADD_FROM_PCPU(i, v_io_faults);
473 ADD_FROM_PCPU(i, v_cow_faults);
474 ADD_FROM_PCPU(i, v_cow_optim);
475 ADD_FROM_PCPU(i, v_zfod);
476 ADD_FROM_PCPU(i, v_ozfod);
477 ADD_FROM_PCPU(i, v_swapin);
478 ADD_FROM_PCPU(i, v_swapout);
479 ADD_FROM_PCPU(i, v_swappgsin);
480 ADD_FROM_PCPU(i, v_swappgsout);
481 ADD_FROM_PCPU(i, v_vnodein);
482 ADD_FROM_PCPU(i, v_vnodeout);
483 ADD_FROM_PCPU(i, v_vnodepgsin);
484 ADD_FROM_PCPU(i, v_vnodepgsout);
485 ADD_FROM_PCPU(i, v_intrans);
486 ADD_FROM_PCPU(i, v_tfree);
487 ADD_FROM_PCPU(i, v_forks);
488 ADD_FROM_PCPU(i, v_vforks);
489 ADD_FROM_PCPU(i, v_rforks);
490 ADD_FROM_PCPU(i, v_kthreads);
491 ADD_FROM_PCPU(i, v_forkpages);
492 ADD_FROM_PCPU(i, v_vforkpages);
493 ADD_FROM_PCPU(i, v_rforkpages);
494 ADD_FROM_PCPU(i, v_kthreadpages);
495 #undef ADD_FROM_PCPU
496 }
497 free_pcpu(pcpu, maxcpu);
498 } else {
499 size_t size = sizeof(unsigned int);
500 #define GET_VM_STATS(cat, name) \
501 mysysctl("vm.stats." #cat "." #name, &vmmp->name, &size, NULL, 0)
502 /* sys */
503 GET_VM_STATS(sys, v_swtch);
504 GET_VM_STATS(sys, v_trap);
505 GET_VM_STATS(sys, v_syscall);
506 GET_VM_STATS(sys, v_intr);
507 GET_VM_STATS(sys, v_soft);
508
509 /* vm */
510 GET_VM_STATS(vm, v_vm_faults);
511 GET_VM_STATS(vm, v_io_faults);
512 GET_VM_STATS(vm, v_cow_faults);
513 GET_VM_STATS(vm, v_cow_optim);
514 GET_VM_STATS(vm, v_zfod);
515 GET_VM_STATS(vm, v_ozfod);
516 GET_VM_STATS(vm, v_swapin);
517 GET_VM_STATS(vm, v_swapout);
518 GET_VM_STATS(vm, v_swappgsin);
519 GET_VM_STATS(vm, v_swappgsout);
520 GET_VM_STATS(vm, v_vnodein);
521 GET_VM_STATS(vm, v_vnodeout);
522 GET_VM_STATS(vm, v_vnodepgsin);
523 GET_VM_STATS(vm, v_vnodepgsout);
524 GET_VM_STATS(vm, v_intrans);
525 GET_VM_STATS(vm, v_reactivated);
526 GET_VM_STATS(vm, v_pdwakeups);
527 GET_VM_STATS(vm, v_pdpages);
528 GET_VM_STATS(vm, v_tcached);
529 GET_VM_STATS(vm, v_dfree);
530 GET_VM_STATS(vm, v_pfree);
531 GET_VM_STATS(vm, v_tfree);
532 GET_VM_STATS(vm, v_page_size);
533 GET_VM_STATS(vm, v_page_count);
534 GET_VM_STATS(vm, v_free_reserved);
535 GET_VM_STATS(vm, v_free_target);
536 GET_VM_STATS(vm, v_free_min);
537 GET_VM_STATS(vm, v_free_count);
538 GET_VM_STATS(vm, v_wire_count);
539 GET_VM_STATS(vm, v_active_count);
540 GET_VM_STATS(vm, v_inactive_target);
541 GET_VM_STATS(vm, v_inactive_count);
542 GET_VM_STATS(vm, v_cache_count);
543 GET_VM_STATS(vm, v_cache_min);
544 GET_VM_STATS(vm, v_cache_max);
545 GET_VM_STATS(vm, v_pageout_free_min);
546 GET_VM_STATS(vm, v_interrupt_free_min);
547 /*GET_VM_STATS(vm, v_free_severe);*/
548 GET_VM_STATS(vm, v_forks);
549 GET_VM_STATS(vm, v_vforks);
550 GET_VM_STATS(vm, v_rforks);
551 GET_VM_STATS(vm, v_kthreads);
552 GET_VM_STATS(vm, v_forkpages);
553 GET_VM_STATS(vm, v_vforkpages);
554 GET_VM_STATS(vm, v_rforkpages);
555 GET_VM_STATS(vm, v_kthreadpages);
556 #undef GET_VM_STATS
557 }
558 }
559
560 static void
fill_vmtotal(struct vmtotal * vmtp)561 fill_vmtotal(struct vmtotal *vmtp)
562 {
563 if (kd != NULL) {
564 /* XXX fill vmtp */
565 errx(1, "not implemented");
566 } else {
567 size_t size = sizeof(*vmtp);
568 mysysctl("vm.vmtotal", vmtp, &size, NULL, 0);
569 if (size != sizeof(*vmtp))
570 errx(1, "vm.total size mismatch");
571 }
572 }
573
574 /* Determine how many cpu columns, and what index they are in kern.cp_times */
575 static int
getcpuinfo(u_long * maskp,int * maxidp)576 getcpuinfo(u_long *maskp, int *maxidp)
577 {
578 int maxcpu;
579 int maxid;
580 int ncpus;
581 int i, j;
582 int empty;
583 size_t size;
584 long *times;
585 u_long mask;
586
587 if (kd != NULL)
588 errx(1, "not implemented");
589 mask = 0;
590 ncpus = 0;
591 size = sizeof(maxcpu);
592 mysysctl("kern.smp.maxcpus", &maxcpu, &size, NULL, 0);
593 if (size != sizeof(maxcpu))
594 errx(1, "sysctl kern.smp.maxcpus");
595 size = sizeof(long) * maxcpu * CPUSTATES;
596 times = malloc(size);
597 if (times == NULL)
598 err(1, "malloc %zd bytes", size);
599 mysysctl("kern.cp_times", times, &size, NULL, 0);
600 maxid = (size / CPUSTATES / sizeof(long)) - 1;
601 for (i = 0; i <= maxid; i++) {
602 empty = 1;
603 for (j = 0; empty && j < CPUSTATES; j++) {
604 if (times[i * CPUSTATES + j] != 0)
605 empty = 0;
606 }
607 if (!empty) {
608 mask |= (1ul << i);
609 ncpus++;
610 }
611 }
612 if (maskp)
613 *maskp = mask;
614 if (maxidp)
615 *maxidp = maxid;
616 return (ncpus);
617 }
618
619
620 static void
prthuman(u_int64_t val,int size)621 prthuman(u_int64_t val, int size)
622 {
623 char buf[10];
624 int flags;
625
626 if (size < 5 || size > 9)
627 errx(1, "doofus");
628 flags = HN_B | HN_NOSPACE | HN_DECIMAL;
629 humanize_number(buf, size, val, "", HN_AUTOSCALE, flags);
630 printf("%*s", size, buf);
631 }
632
633 static int hz, hdrcnt;
634
635 static long *cur_cp_times;
636 static long *last_cp_times;
637 static size_t size_cp_times;
638
639 static void
dovmstat(unsigned int interval,int reps)640 dovmstat(unsigned int interval, int reps)
641 {
642 struct vmtotal total;
643 time_t uptime, halfuptime;
644 struct devinfo *tmp_dinfo;
645 size_t size;
646 int ncpus, maxid;
647 u_long cpumask;
648 int rate_adj;
649
650 uptime = getuptime();
651 halfuptime = uptime / 2;
652 rate_adj = 1;
653 ncpus = 1;
654 maxid = 0;
655
656 /*
657 * If the user stops the program (control-Z) and then resumes it,
658 * print out the header again.
659 */
660 (void)signal(SIGCONT, needhdr);
661
662 /*
663 * If our standard output is a tty, then install a SIGWINCH handler
664 * and set wresized so that our first iteration through the main
665 * vmstat loop will peek at the terminal's current rows to find out
666 * how many lines can fit in a screenful of output.
667 */
668 if (isatty(fileno(stdout)) != 0) {
669 wresized = 1;
670 (void)signal(SIGWINCH, needresize);
671 } else {
672 wresized = 0;
673 winlines = VMSTAT_DEFAULT_LINES;
674 }
675
676 if (kd != NULL) {
677 if (namelist[X_STATHZ].n_type != 0 &&
678 namelist[X_STATHZ].n_value != 0)
679 kread(X_STATHZ, &hz, sizeof(hz));
680 if (!hz)
681 kread(X_HZ, &hz, sizeof(hz));
682 } else {
683 struct clockinfo clockrate;
684
685 size = sizeof(clockrate);
686 mysysctl("kern.clockrate", &clockrate, &size, NULL, 0);
687 if (size != sizeof(clockrate))
688 errx(1, "clockrate size mismatch");
689 hz = clockrate.hz;
690 }
691
692 if (Pflag) {
693 ncpus = getcpuinfo(&cpumask, &maxid);
694 size_cp_times = sizeof(long) * (maxid + 1) * CPUSTATES;
695 cur_cp_times = calloc(1, size_cp_times);
696 last_cp_times = calloc(1, size_cp_times);
697 }
698 for (hdrcnt = 1;;) {
699 if (!--hdrcnt)
700 printhdr(maxid, cpumask);
701 if (kd != NULL) {
702 if (kvm_getcptime(kd, cur.cp_time) < 0)
703 errx(1, "kvm_getcptime: %s", kvm_geterr(kd));
704 } else {
705 size = sizeof(cur.cp_time);
706 mysysctl("kern.cp_time", &cur.cp_time, &size, NULL, 0);
707 if (size != sizeof(cur.cp_time))
708 errx(1, "cp_time size mismatch");
709 }
710 if (Pflag) {
711 size = size_cp_times;
712 mysysctl("kern.cp_times", cur_cp_times, &size, NULL, 0);
713 if (size != size_cp_times)
714 errx(1, "cp_times mismatch");
715 }
716
717 tmp_dinfo = last.dinfo;
718 last.dinfo = cur.dinfo;
719 cur.dinfo = tmp_dinfo;
720 last.snap_time = cur.snap_time;
721
722 /*
723 * Here what we want to do is refresh our device stats.
724 * getdevs() returns 1 when the device list has changed.
725 * If the device list has changed, we want to go through
726 * the selection process again, in case a device that we
727 * were previously displaying has gone away.
728 */
729 switch (devstat_getdevs(NULL, &cur)) {
730 case -1:
731 errx(1, "%s", devstat_errbuf);
732 break;
733 case 1: {
734 int retval;
735
736 num_devices = cur.dinfo->numdevs;
737 generation = cur.dinfo->generation;
738
739 retval = devstat_selectdevs(&dev_select, &num_selected,
740 &num_selections, &select_generation,
741 generation, cur.dinfo->devices,
742 num_devices, matches, num_matches,
743 specified_devices,
744 num_devices_specified, select_mode,
745 maxshowdevs, 0);
746 switch (retval) {
747 case -1:
748 errx(1, "%s", devstat_errbuf);
749 break;
750 case 1:
751 printhdr(maxid, cpumask);
752 break;
753 default:
754 break;
755 }
756 }
757 default:
758 break;
759 }
760
761 fill_vmmeter(&sum);
762 fill_vmtotal(&total);
763 (void)printf("%2d %1d %1d",
764 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw);
765 #define vmstat_pgtok(a) ((a) * (sum.v_page_size >> 10))
766 #define rate(x) (((x) * rate_adj + halfuptime) / uptime) /* round */
767 if (hflag) {
768 printf(" ");
769 prthuman(total.t_avm * (u_int64_t)sum.v_page_size, 7);
770 printf(" ");
771 prthuman(total.t_free * (u_int64_t)sum.v_page_size, 6);
772 printf(" ");
773 } else {
774 printf(" %7d ", vmstat_pgtok(total.t_avm));
775 printf(" %6d ", vmstat_pgtok(total.t_free));
776 }
777 (void)printf("%5lu ",
778 (unsigned long)rate(sum.v_vm_faults - osum.v_vm_faults));
779 (void)printf("%3lu ",
780 (unsigned long)rate(sum.v_reactivated - osum.v_reactivated));
781 (void)printf("%3lu ",
782 (unsigned long)rate(sum.v_swapin + sum.v_vnodein -
783 (osum.v_swapin + osum.v_vnodein)));
784 (void)printf("%3lu ",
785 (unsigned long)rate(sum.v_swapout + sum.v_vnodeout -
786 (osum.v_swapout + osum.v_vnodeout)));
787 (void)printf("%5lu ",
788 (unsigned long)rate(sum.v_tfree - osum.v_tfree));
789 (void)printf("%3lu ",
790 (unsigned long)rate(sum.v_pdpages - osum.v_pdpages));
791 devstats();
792 (void)printf("%4lu %4lu %4lu",
793 (unsigned long)rate(sum.v_intr - osum.v_intr),
794 (unsigned long)rate(sum.v_syscall - osum.v_syscall),
795 (unsigned long)rate(sum.v_swtch - osum.v_swtch));
796 if (Pflag)
797 pcpustats(ncpus, cpumask, maxid);
798 else
799 cpustats();
800 (void)printf("\n");
801 (void)fflush(stdout);
802 if (reps >= 0 && --reps <= 0)
803 break;
804 osum = sum;
805 uptime = interval;
806 rate_adj = 1000;
807 /*
808 * We round upward to avoid losing low-frequency events
809 * (i.e., >= 1 per interval but < 1 per millisecond).
810 */
811 if (interval != 1)
812 halfuptime = (uptime + 1) / 2;
813 else
814 halfuptime = 0;
815 (void)usleep(interval * 1000);
816 }
817 }
818
819 static void
printhdr(int maxid,u_long cpumask)820 printhdr(int maxid, u_long cpumask)
821 {
822 int i, num_shown;
823
824 num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs;
825 (void)printf(" procs memory page%*s", 19, "");
826 if (num_shown > 1)
827 (void)printf(" disks %*s", num_shown * 4 - 7, "");
828 else if (num_shown == 1)
829 (void)printf("disk");
830 (void)printf(" faults ");
831 if (Pflag) {
832 for (i = 0; i <= maxid; i++) {
833 if (cpumask & (1ul << i))
834 printf("cpu%-2d ", i);
835 }
836 printf("\n");
837 } else
838 printf("cpu\n");
839 (void)printf(" r b w avm fre flt re pi po fr sr ");
840 for (i = 0; i < num_devices; i++)
841 if ((dev_select[i].selected)
842 && (dev_select[i].selected <= maxshowdevs))
843 (void)printf("%c%c%d ", dev_select[i].device_name[0],
844 dev_select[i].device_name[1],
845 dev_select[i].unit_number);
846 (void)printf(" in sy cs");
847 if (Pflag) {
848 for (i = 0; i <= maxid; i++) {
849 if (cpumask & (1ul << i))
850 printf(" us sy id");
851 }
852 printf("\n");
853 } else
854 printf(" us sy id\n");
855 if (wresized != 0)
856 doresize();
857 hdrcnt = winlines;
858 }
859
860 /*
861 * Force a header to be prepended to the next output.
862 */
863 static void
needhdr(int dummy __unused)864 needhdr(int dummy __unused)
865 {
866
867 hdrcnt = 1;
868 }
869
870 /*
871 * When the terminal is resized, force an update of the maximum number of rows
872 * printed between each header repetition. Then force a new header to be
873 * prepended to the next output.
874 */
875 void
needresize(int signo)876 needresize(int signo)
877 {
878
879 wresized = 1;
880 hdrcnt = 1;
881 }
882
883 /*
884 * Update the global `winlines' count of terminal rows.
885 */
886 void
doresize(void)887 doresize(void)
888 {
889 int status;
890 struct winsize w;
891
892 for (;;) {
893 status = ioctl(fileno(stdout), TIOCGWINSZ, &w);
894 if (status == -1 && errno == EINTR)
895 continue;
896 else if (status == -1)
897 err(1, "ioctl");
898 if (w.ws_row > 3)
899 winlines = w.ws_row - 3;
900 else
901 winlines = VMSTAT_DEFAULT_LINES;
902 break;
903 }
904
905 /*
906 * Inhibit doresize() calls until we are rescheduled by SIGWINCH.
907 */
908 wresized = 0;
909 }
910
911 #ifdef notyet
912 static void
dotimes(void)913 dotimes(void)
914 {
915 unsigned int pgintime, rectime;
916
917 kread(X_REC, &rectime, sizeof(rectime));
918 kread(X_PGIN, &pgintime, sizeof(pgintime));
919 kread(X_SUM, &sum, sizeof(sum));
920 (void)printf("%u reclaims, %u total time (usec)\n",
921 sum.v_pgrec, rectime);
922 (void)printf("average: %u usec / reclaim\n", rectime / sum.v_pgrec);
923 (void)printf("\n");
924 (void)printf("%u page ins, %u total time (msec)\n",
925 sum.v_pgin, pgintime / 10);
926 (void)printf("average: %8.1f msec / page in\n",
927 pgintime / (sum.v_pgin * 10.0));
928 }
929 #endif
930
931 static long
pct(long top,long bot)932 pct(long top, long bot)
933 {
934 long ans;
935
936 if (bot == 0)
937 return(0);
938 ans = (quad_t)top * 100 / bot;
939 return (ans);
940 }
941
942 #define PCT(top, bot) pct((long)(top), (long)(bot))
943
944 static void
dosum(void)945 dosum(void)
946 {
947 struct nchstats lnchstats;
948 long nchtotal;
949
950 fill_vmmeter(&sum);
951 (void)printf("%9u cpu context switches\n", sum.v_swtch);
952 (void)printf("%9u device interrupts\n", sum.v_intr);
953 (void)printf("%9u software interrupts\n", sum.v_soft);
954 (void)printf("%9u traps\n", sum.v_trap);
955 (void)printf("%9u system calls\n", sum.v_syscall);
956 (void)printf("%9u kernel threads created\n", sum.v_kthreads);
957 (void)printf("%9u fork() calls\n", sum.v_forks);
958 (void)printf("%9u vfork() calls\n", sum.v_vforks);
959 (void)printf("%9u rfork() calls\n", sum.v_rforks);
960 (void)printf("%9u swap pager pageins\n", sum.v_swapin);
961 (void)printf("%9u swap pager pages paged in\n", sum.v_swappgsin);
962 (void)printf("%9u swap pager pageouts\n", sum.v_swapout);
963 (void)printf("%9u swap pager pages paged out\n", sum.v_swappgsout);
964 (void)printf("%9u vnode pager pageins\n", sum.v_vnodein);
965 (void)printf("%9u vnode pager pages paged in\n", sum.v_vnodepgsin);
966 (void)printf("%9u vnode pager pageouts\n", sum.v_vnodeout);
967 (void)printf("%9u vnode pager pages paged out\n", sum.v_vnodepgsout);
968 (void)printf("%9u page daemon wakeups\n", sum.v_pdwakeups);
969 (void)printf("%9u pages examined by the page daemon\n", sum.v_pdpages);
970 (void)printf("%9u pages reactivated\n", sum.v_reactivated);
971 (void)printf("%9u copy-on-write faults\n", sum.v_cow_faults);
972 (void)printf("%9u copy-on-write optimized faults\n", sum.v_cow_optim);
973 (void)printf("%9u zero fill pages zeroed\n", sum.v_zfod);
974 (void)printf("%9u zero fill pages prezeroed\n", sum.v_ozfod);
975 (void)printf("%9u intransit blocking page faults\n", sum.v_intrans);
976 (void)printf("%9u total VM faults taken\n", sum.v_vm_faults);
977 (void)printf("%9u page faults requiring I/O\n", sum.v_io_faults);
978 (void)printf("%9u pages affected by kernel thread creation\n", sum.v_kthreadpages);
979 (void)printf("%9u pages affected by fork()\n", sum.v_forkpages);
980 (void)printf("%9u pages affected by vfork()\n", sum.v_vforkpages);
981 (void)printf("%9u pages affected by rfork()\n", sum.v_rforkpages);
982 (void)printf("%9u pages cached\n", sum.v_tcached);
983 (void)printf("%9u pages freed\n", sum.v_tfree);
984 (void)printf("%9u pages freed by daemon\n", sum.v_dfree);
985 (void)printf("%9u pages freed by exiting processes\n", sum.v_pfree);
986 (void)printf("%9u pages active\n", sum.v_active_count);
987 (void)printf("%9u pages inactive\n", sum.v_inactive_count);
988 (void)printf("%9u pages in VM cache\n", sum.v_cache_count);
989 (void)printf("%9u pages wired down\n", sum.v_wire_count);
990 (void)printf("%9u pages free\n", sum.v_free_count);
991 (void)printf("%9u bytes per page\n", sum.v_page_size);
992 if (kd != NULL) {
993 kread(X_NCHSTATS, &lnchstats, sizeof(lnchstats));
994 } else {
995 size_t size = sizeof(lnchstats);
996 mysysctl("vfs.cache.nchstats", &lnchstats, &size, NULL, 0);
997 if (size != sizeof(lnchstats))
998 errx(1, "vfs.cache.nchstats size mismatch");
999 }
1000 nchtotal = lnchstats.ncs_goodhits + lnchstats.ncs_neghits +
1001 lnchstats.ncs_badhits + lnchstats.ncs_falsehits +
1002 lnchstats.ncs_miss + lnchstats.ncs_long;
1003 (void)printf("%9ld total name lookups\n", nchtotal);
1004 (void)printf(
1005 "%9s cache hits (%ld%% pos + %ld%% neg) system %ld%% per-directory\n",
1006 "", PCT(lnchstats.ncs_goodhits, nchtotal),
1007 PCT(lnchstats.ncs_neghits, nchtotal),
1008 PCT(lnchstats.ncs_pass2, nchtotal));
1009 (void)printf("%9s deletions %ld%%, falsehits %ld%%, toolong %ld%%\n", "",
1010 PCT(lnchstats.ncs_badhits, nchtotal),
1011 PCT(lnchstats.ncs_falsehits, nchtotal),
1012 PCT(lnchstats.ncs_long, nchtotal));
1013 }
1014
1015 static void
doforkst(void)1016 doforkst(void)
1017 {
1018 fill_vmmeter(&sum);
1019 (void)printf("%u forks, %u pages, average %.2f\n",
1020 sum.v_forks, sum.v_forkpages,
1021 sum.v_forks == 0 ? 0.0 :
1022 (double)sum.v_forkpages / sum.v_forks);
1023 (void)printf("%u vforks, %u pages, average %.2f\n",
1024 sum.v_vforks, sum.v_vforkpages,
1025 sum.v_vforks == 0 ? 0.0 :
1026 (double)sum.v_vforkpages / sum.v_vforks);
1027 (void)printf("%u rforks, %u pages, average %.2f\n",
1028 sum.v_rforks, sum.v_rforkpages,
1029 sum.v_rforks == 0 ? 0.0 :
1030 (double)sum.v_rforkpages / sum.v_rforks);
1031 }
1032
1033 static void
devstats(void)1034 devstats(void)
1035 {
1036 int dn, state;
1037 long double transfers_per_second;
1038 long double busy_seconds;
1039 long tmp;
1040
1041 for (state = 0; state < CPUSTATES; ++state) {
1042 tmp = cur.cp_time[state];
1043 cur.cp_time[state] -= last.cp_time[state];
1044 last.cp_time[state] = tmp;
1045 }
1046
1047 busy_seconds = cur.snap_time - last.snap_time;
1048
1049 for (dn = 0; dn < num_devices; dn++) {
1050 int di;
1051
1052 if ((dev_select[dn].selected == 0)
1053 || (dev_select[dn].selected > maxshowdevs))
1054 continue;
1055
1056 di = dev_select[dn].position;
1057
1058 if (devstat_compute_statistics(&cur.dinfo->devices[di],
1059 &last.dinfo->devices[di], busy_seconds,
1060 DSM_TRANSFERS_PER_SECOND, &transfers_per_second,
1061 DSM_NONE) != 0)
1062 errx(1, "%s", devstat_errbuf);
1063
1064 (void)printf("%3.0Lf ", transfers_per_second);
1065 }
1066 }
1067
1068 static void
percent(double pct,int * over)1069 percent(double pct, int *over)
1070 {
1071 char buf[10];
1072 int l;
1073
1074 l = snprintf(buf, sizeof(buf), "%.0f", pct);
1075 if (l == 1 && *over) {
1076 printf("%s", buf);
1077 (*over)--;
1078 } else
1079 printf("%2s", buf);
1080 if (l > 2)
1081 (*over)++;
1082 }
1083
1084 static void
cpustats(void)1085 cpustats(void)
1086 {
1087 int state, over;
1088 double lpct, total;
1089
1090 total = 0;
1091 for (state = 0; state < CPUSTATES; ++state)
1092 total += cur.cp_time[state];
1093 if (total)
1094 lpct = 100.0 / total;
1095 else
1096 lpct = 0.0;
1097 over = 0;
1098 printf(" ");
1099 percent((cur.cp_time[CP_USER] + cur.cp_time[CP_NICE]) * lpct, &over);
1100 printf(" ");
1101 percent((cur.cp_time[CP_SYS] + cur.cp_time[CP_INTR]) * lpct, &over);
1102 printf(" ");
1103 percent(cur.cp_time[CP_IDLE] * lpct, &over);
1104 }
1105
1106 static void
pcpustats(int ncpus,u_long cpumask,int maxid)1107 pcpustats(int ncpus, u_long cpumask, int maxid)
1108 {
1109 int state, i;
1110 double lpct, total;
1111 long tmp;
1112 int over;
1113
1114 /* devstats does this for cp_time */
1115 for (i = 0; i <= maxid; i++) {
1116 if ((cpumask & (1ul << i)) == 0)
1117 continue;
1118 for (state = 0; state < CPUSTATES; ++state) {
1119 tmp = cur_cp_times[i * CPUSTATES + state];
1120 cur_cp_times[i * CPUSTATES + state] -= last_cp_times[i * CPUSTATES + state];
1121 last_cp_times[i * CPUSTATES + state] = tmp;
1122 }
1123 }
1124
1125 over = 0;
1126 for (i = 0; i <= maxid; i++) {
1127 if ((cpumask & (1ul << i)) == 0)
1128 continue;
1129 total = 0;
1130 for (state = 0; state < CPUSTATES; ++state)
1131 total += cur_cp_times[i * CPUSTATES + state];
1132 if (total)
1133 lpct = 100.0 / total;
1134 else
1135 lpct = 0.0;
1136 printf(" ");
1137 percent((cur_cp_times[i * CPUSTATES + CP_USER] +
1138 cur_cp_times[i * CPUSTATES + CP_NICE]) * lpct, &over);
1139 printf(" ");
1140 percent((cur_cp_times[i * CPUSTATES + CP_SYS] +
1141 cur_cp_times[i * CPUSTATES + CP_INTR]) * lpct, &over);
1142 printf(" ");
1143 percent(cur_cp_times[i * CPUSTATES + CP_IDLE] * lpct, &over);
1144 }
1145 }
1146
1147 static void
dointr(void)1148 dointr(void)
1149 {
1150 unsigned long *intrcnt, uptime;
1151 uint64_t inttotal;
1152 size_t clen, inamlen, intrcntlen, istrnamlen;
1153 unsigned int i, nintr;
1154 char *intrname, *tintrname;
1155
1156 uptime = getuptime();
1157 if (kd != NULL) {
1158 kread(X_SINTRCNT, &intrcntlen, sizeof(intrcntlen));
1159 kread(X_SINTRNAMES, &inamlen, sizeof(inamlen));
1160 if ((intrcnt = malloc(intrcntlen)) == NULL ||
1161 (intrname = malloc(inamlen)) == NULL)
1162 err(1, "malloc()");
1163 kread(X_INTRCNT, intrcnt, intrcntlen);
1164 kread(X_INTRNAMES, intrname, inamlen);
1165 } else {
1166 for (intrcnt = NULL, intrcntlen = 1024; ; intrcntlen *= 2) {
1167 if ((intrcnt = reallocf(intrcnt, intrcntlen)) == NULL)
1168 err(1, "reallocf()");
1169 if (mysysctl("hw.intrcnt",
1170 intrcnt, &intrcntlen, NULL, 0) == 0)
1171 break;
1172 }
1173 for (intrname = NULL, inamlen = 1024; ; inamlen *= 2) {
1174 if ((intrname = reallocf(intrname, inamlen)) == NULL)
1175 err(1, "reallocf()");
1176 if (mysysctl("hw.intrnames",
1177 intrname, &inamlen, NULL, 0) == 0)
1178 break;
1179 }
1180 }
1181 nintr = intrcntlen / sizeof(unsigned long);
1182 tintrname = intrname;
1183 istrnamlen = strlen("interrupt");
1184 for (i = 0; i < nintr; i++) {
1185 clen = strlen(tintrname);
1186 if (clen > istrnamlen)
1187 istrnamlen = clen;
1188 tintrname += clen + 1;
1189 }
1190 (void)printf("%-*s %20s %10s\n", (int)istrnamlen, "interrupt", "total",
1191 "rate");
1192 inttotal = 0;
1193 for (i = 0; i < nintr; i++) {
1194 if (intrname[0] != '\0' && (*intrcnt != 0 || aflag))
1195 (void)printf("%-*s %20lu %10lu\n", (int)istrnamlen,
1196 intrname, *intrcnt, *intrcnt / uptime);
1197 intrname += strlen(intrname) + 1;
1198 inttotal += *intrcnt++;
1199 }
1200 (void)printf("%-*s %20" PRIu64 " %10" PRIu64 "\n", (int)istrnamlen,
1201 "Total", inttotal, inttotal / uptime);
1202 }
1203
1204 static void
domemstat_malloc(void)1205 domemstat_malloc(void)
1206 {
1207 struct memory_type_list *mtlp;
1208 struct memory_type *mtp;
1209 int error, first, i;
1210
1211 mtlp = memstat_mtl_alloc();
1212 if (mtlp == NULL) {
1213 warn("memstat_mtl_alloc");
1214 return;
1215 }
1216 if (kd == NULL) {
1217 if (memstat_sysctl_malloc(mtlp, 0) < 0) {
1218 warnx("memstat_sysctl_malloc: %s",
1219 memstat_strerror(memstat_mtl_geterror(mtlp)));
1220 return;
1221 }
1222 } else {
1223 if (memstat_kvm_malloc(mtlp, kd) < 0) {
1224 error = memstat_mtl_geterror(mtlp);
1225 if (error == MEMSTAT_ERROR_KVM)
1226 warnx("memstat_kvm_malloc: %s",
1227 kvm_geterr(kd));
1228 else
1229 warnx("memstat_kvm_malloc: %s",
1230 memstat_strerror(error));
1231 }
1232 }
1233 printf("%13s %5s %6s %7s %8s Size(s)\n", "Type", "InUse", "MemUse",
1234 "HighUse", "Requests");
1235 for (mtp = memstat_mtl_first(mtlp); mtp != NULL;
1236 mtp = memstat_mtl_next(mtp)) {
1237 if (memstat_get_numallocs(mtp) == 0 &&
1238 memstat_get_count(mtp) == 0)
1239 continue;
1240 printf("%13s %5" PRIu64 " %5" PRIu64 "K %7s %8" PRIu64 " ",
1241 memstat_get_name(mtp), memstat_get_count(mtp),
1242 (memstat_get_bytes(mtp) + 1023) / 1024, "-",
1243 memstat_get_numallocs(mtp));
1244 first = 1;
1245 for (i = 0; i < 32; i++) {
1246 if (memstat_get_sizemask(mtp) & (1 << i)) {
1247 if (!first)
1248 printf(",");
1249 printf("%d", 1 << (i + 4));
1250 first = 0;
1251 }
1252 }
1253 printf("\n");
1254 }
1255 memstat_mtl_free(mtlp);
1256 }
1257
1258 static void
domemstat_zone(void)1259 domemstat_zone(void)
1260 {
1261 struct memory_type_list *mtlp;
1262 struct memory_type *mtp;
1263 char name[MEMTYPE_MAXNAME + 1];
1264 int error;
1265
1266 mtlp = memstat_mtl_alloc();
1267 if (mtlp == NULL) {
1268 warn("memstat_mtl_alloc");
1269 return;
1270 }
1271 if (kd == NULL) {
1272 if (memstat_sysctl_uma(mtlp, 0) < 0) {
1273 warnx("memstat_sysctl_uma: %s",
1274 memstat_strerror(memstat_mtl_geterror(mtlp)));
1275 return;
1276 }
1277 } else {
1278 if (memstat_kvm_uma(mtlp, kd) < 0) {
1279 error = memstat_mtl_geterror(mtlp);
1280 if (error == MEMSTAT_ERROR_KVM)
1281 warnx("memstat_kvm_uma: %s",
1282 kvm_geterr(kd));
1283 else
1284 warnx("memstat_kvm_uma: %s",
1285 memstat_strerror(error));
1286 }
1287 }
1288 printf("%-20s %6s %6s %8s %8s %8s %4s %4s\n\n", "ITEM", "SIZE",
1289 "LIMIT", "USED", "FREE", "REQ", "FAIL", "SLEEP");
1290 for (mtp = memstat_mtl_first(mtlp); mtp != NULL;
1291 mtp = memstat_mtl_next(mtp)) {
1292 strlcpy(name, memstat_get_name(mtp), MEMTYPE_MAXNAME);
1293 strcat(name, ":");
1294 printf("%-20s %6" PRIu64 ", %6" PRIu64 ",%8" PRIu64 ",%8" PRIu64
1295 ",%8" PRIu64 ",%4" PRIu64 ",%4" PRIu64 "\n", name,
1296 memstat_get_size(mtp), memstat_get_countlimit(mtp),
1297 memstat_get_count(mtp), memstat_get_free(mtp),
1298 memstat_get_numallocs(mtp), memstat_get_failures(mtp),
1299 memstat_get_sleeps(mtp));
1300 }
1301 memstat_mtl_free(mtlp);
1302 printf("\n");
1303 }
1304
1305 /*
1306 * kread reads something from the kernel, given its nlist index.
1307 */
1308 static void
kreado(int nlx,void * addr,size_t size,size_t offset)1309 kreado(int nlx, void *addr, size_t size, size_t offset)
1310 {
1311 const char *sym;
1312
1313 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) {
1314 sym = namelist[nlx].n_name;
1315 if (*sym == '_')
1316 ++sym;
1317 errx(1, "symbol %s not defined", sym);
1318 }
1319 if ((size_t)kvm_read(kd, namelist[nlx].n_value + offset, addr,
1320 size) != size) {
1321 sym = namelist[nlx].n_name;
1322 if (*sym == '_')
1323 ++sym;
1324 errx(1, "%s: %s", sym, kvm_geterr(kd));
1325 }
1326 }
1327
1328 static void
kread(int nlx,void * addr,size_t size)1329 kread(int nlx, void *addr, size_t size)
1330 {
1331 kreado(nlx, addr, size, 0);
1332 }
1333
1334 static char *
kgetstr(const char * strp)1335 kgetstr(const char *strp)
1336 {
1337 int n = 0, size = 1;
1338 char *ret = NULL;
1339
1340 do {
1341 if (size == n + 1) {
1342 ret = realloc(ret, size);
1343 if (ret == NULL)
1344 err(1, "%s: realloc", __func__);
1345 size *= 2;
1346 }
1347 if (kvm_read(kd, (u_long)strp + n, &ret[n], 1) != 1)
1348 errx(1, "%s: %s", __func__, kvm_geterr(kd));
1349 } while (ret[n++] != '\0');
1350 return (ret);
1351 }
1352
1353 static void
usage(void)1354 usage(void)
1355 {
1356 (void)fprintf(stderr, "%s%s",
1357 "usage: vmstat [-afHhimPsz] [-c count] [-M core [-N system]] [-w wait]\n",
1358 " [-n devs] [-p type,if,pass] [disks]\n");
1359 exit(1);
1360 }
1361