1354 lines
34 KiB
C
1354 lines
34 KiB
C
/*
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* Copyright (c) 1980, 1986, 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1980, 1986, 1991, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#if 0
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#ifndef lint
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static char sccsid[] = "@(#)vmstat.c 8.1 (Berkeley) 6/6/93";
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#endif /* not lint */
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <sys/uio.h>
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#include <sys/namei.h>
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#include <sys/malloc.h>
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#include <sys/signal.h>
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#include <sys/fcntl.h>
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#include <sys/ioctl.h>
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#include <sys/resource.h>
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#include <sys/sysctl.h>
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#include <sys/time.h>
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#include <sys/vmmeter.h>
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#include <sys/pcpu.h>
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#include <vm/vm_param.h>
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#include <ctype.h>
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#include <devstat.h>
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#include <err.h>
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#include <errno.h>
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#include <inttypes.h>
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#include <kvm.h>
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#include <limits.h>
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#include <memstat.h>
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#include <nlist.h>
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#include <paths.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sysexits.h>
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#include <time.h>
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#include <unistd.h>
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#include <libutil.h>
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static char da[] = "da";
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static struct nlist namelist[] = {
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#define X_SUM 0
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{ "_cnt" },
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#define X_HZ 1
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{ "_hz" },
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#define X_STATHZ 2
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{ "_stathz" },
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#define X_NCHSTATS 3
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{ "_nchstats" },
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#define X_INTRNAMES 4
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{ "_intrnames" },
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#define X_SINTRNAMES 5
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{ "_sintrnames" },
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#define X_INTRCNT 6
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{ "_intrcnt" },
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#define X_SINTRCNT 7
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{ "_sintrcnt" },
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#ifdef notyet
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#define X_DEFICIT XXX
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{ "_deficit" },
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#define X_REC XXX
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{ "_rectime" },
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#define X_PGIN XXX
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{ "_pgintime" },
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#define X_XSTATS XXX
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{ "_xstats" },
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#define X_END XXX
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#else
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#define X_END 8
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#endif
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{ "" },
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};
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static struct statinfo cur, last;
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static int num_devices, maxshowdevs;
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static long generation;
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static struct device_selection *dev_select;
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static int num_selected;
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static struct devstat_match *matches;
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static int num_matches = 0;
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static int num_devices_specified, num_selections;
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static long select_generation;
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static char **specified_devices;
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static devstat_select_mode select_mode;
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static struct vmmeter sum, osum;
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#define VMSTAT_DEFAULT_LINES 20 /* Default number of `winlines'. */
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volatile sig_atomic_t wresized; /* Tty resized, when non-zero. */
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static int winlines = VMSTAT_DEFAULT_LINES; /* Current number of tty rows. */
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static int aflag;
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static int nflag;
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static int Pflag;
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static int hflag;
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static kvm_t *kd;
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#define FORKSTAT 0x01
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#define INTRSTAT 0x02
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#define MEMSTAT 0x04
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#define SUMSTAT 0x08
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#define TIMESTAT 0x10
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#define VMSTAT 0x20
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#define ZMEMSTAT 0x40
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static void cpustats(void);
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static void pcpustats(int, u_long, int);
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static void devstats(void);
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static void doforkst(void);
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static void dointr(void);
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static void dosum(void);
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static void dovmstat(unsigned int, int);
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static void domemstat_malloc(void);
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static void domemstat_zone(void);
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static void kread(int, void *, size_t);
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static void kreado(int, void *, size_t, size_t);
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static char *kgetstr(const char *);
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static void needhdr(int);
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static void needresize(int);
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static void doresize(void);
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static void printhdr(int, u_long);
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static void usage(void);
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static long pct(long, long);
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static long getuptime(void);
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static char **getdrivedata(char **);
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int
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main(int argc, char *argv[])
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{
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int c, todo;
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unsigned int interval;
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float f;
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int reps;
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char *memf, *nlistf;
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char errbuf[_POSIX2_LINE_MAX];
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memf = nlistf = NULL;
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interval = reps = todo = 0;
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maxshowdevs = 2;
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hflag = isatty(1);
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while ((c = getopt(argc, argv, "ac:fhHiM:mN:n:Pp:stw:z")) != -1) {
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switch (c) {
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case 'a':
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aflag++;
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break;
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case 'c':
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reps = atoi(optarg);
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break;
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case 'P':
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Pflag++;
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break;
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case 'f':
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todo |= FORKSTAT;
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break;
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case 'h':
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hflag = 1;
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break;
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case 'H':
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hflag = 0;
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break;
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case 'i':
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todo |= INTRSTAT;
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break;
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case 'M':
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memf = optarg;
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break;
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case 'm':
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todo |= MEMSTAT;
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break;
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case 'N':
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nlistf = optarg;
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break;
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case 'n':
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nflag = 1;
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maxshowdevs = atoi(optarg);
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if (maxshowdevs < 0)
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errx(1, "number of devices %d is < 0",
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maxshowdevs);
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break;
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case 'p':
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if (devstat_buildmatch(optarg, &matches, &num_matches) != 0)
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errx(1, "%s", devstat_errbuf);
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break;
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case 's':
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todo |= SUMSTAT;
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break;
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case 't':
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#ifdef notyet
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todo |= TIMESTAT;
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#else
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errx(EX_USAGE, "sorry, -t is not (re)implemented yet");
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#endif
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break;
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case 'w':
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/* Convert to milliseconds. */
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f = atof(optarg);
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interval = f * 1000;
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break;
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case 'z':
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todo |= ZMEMSTAT;
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break;
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case '?':
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default:
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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if (todo == 0)
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todo = VMSTAT;
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if (memf != NULL) {
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kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
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if (kd == NULL)
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errx(1, "kvm_openfiles: %s", errbuf);
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}
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if (kd != NULL && (c = kvm_nlist(kd, namelist)) != 0) {
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if (c > 0) {
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warnx("undefined symbols:");
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for (c = 0;
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c < (int)(sizeof(namelist)/sizeof(namelist[0]));
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c++)
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if (namelist[c].n_type == 0)
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(void)fprintf(stderr, " %s",
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namelist[c].n_name);
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(void)fputc('\n', stderr);
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} else
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warnx("kvm_nlist: %s", kvm_geterr(kd));
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exit(1);
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}
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if (kd && Pflag)
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errx(1, "Cannot use -P with crash dumps");
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if (todo & VMSTAT) {
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/*
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* Make sure that the userland devstat version matches the
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* kernel devstat version. If not, exit and print a
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* message informing the user of his mistake.
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*/
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if (devstat_checkversion(NULL) < 0)
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errx(1, "%s", devstat_errbuf);
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argv = getdrivedata(argv);
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}
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#define BACKWARD_COMPATIBILITY
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#ifdef BACKWARD_COMPATIBILITY
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if (*argv) {
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f = atof(*argv);
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interval = f * 1000;
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if (*++argv)
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reps = atoi(*argv);
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}
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#endif
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if (interval) {
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if (!reps)
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reps = -1;
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} else if (reps)
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interval = 1 * 1000;
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if (todo & FORKSTAT)
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doforkst();
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if (todo & MEMSTAT)
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domemstat_malloc();
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if (todo & ZMEMSTAT)
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domemstat_zone();
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if (todo & SUMSTAT)
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dosum();
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#ifdef notyet
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if (todo & TIMESTAT)
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dotimes();
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#endif
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if (todo & INTRSTAT)
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dointr();
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if (todo & VMSTAT)
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dovmstat(interval, reps);
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exit(0);
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}
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static int
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mysysctl(const char *name, void *oldp, size_t *oldlenp,
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void *newp, size_t newlen)
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{
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int error;
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error = sysctlbyname(name, oldp, oldlenp, newp, newlen);
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if (error != 0 && errno != ENOMEM)
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err(1, "sysctl(%s)", name);
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return (error);
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}
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static char **
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getdrivedata(char **argv)
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{
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if ((num_devices = devstat_getnumdevs(NULL)) < 0)
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errx(1, "%s", devstat_errbuf);
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cur.dinfo = (struct devinfo *)calloc(1, sizeof(struct devinfo));
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last.dinfo = (struct devinfo *)calloc(1, sizeof(struct devinfo));
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if (devstat_getdevs(NULL, &cur) == -1)
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errx(1, "%s", devstat_errbuf);
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num_devices = cur.dinfo->numdevs;
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generation = cur.dinfo->generation;
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specified_devices = (char **)malloc(sizeof(char *));
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for (num_devices_specified = 0; *argv; ++argv) {
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if (isdigit(**argv))
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break;
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num_devices_specified++;
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specified_devices = (char **)realloc(specified_devices,
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sizeof(char *) *
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num_devices_specified);
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specified_devices[num_devices_specified - 1] = *argv;
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}
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dev_select = NULL;
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if (nflag == 0 && maxshowdevs < num_devices_specified)
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maxshowdevs = num_devices_specified;
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/*
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* People are generally only interested in disk statistics when
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* they're running vmstat. So, that's what we're going to give
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* them if they don't specify anything by default. We'll also give
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* them any other random devices in the system so that we get to
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* maxshowdevs devices, if that many devices exist. If the user
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* specifies devices on the command line, either through a pattern
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* match or by naming them explicitly, we will give the user only
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* those devices.
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*/
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if ((num_devices_specified == 0) && (num_matches == 0)) {
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if (devstat_buildmatch(da, &matches, &num_matches) != 0)
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errx(1, "%s", devstat_errbuf);
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select_mode = DS_SELECT_ADD;
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} else
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select_mode = DS_SELECT_ONLY;
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/*
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* At this point, selectdevs will almost surely indicate that the
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* device list has changed, so we don't look for return values of 0
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* or 1. If we get back -1, though, there is an error.
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*/
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if (devstat_selectdevs(&dev_select, &num_selected, &num_selections,
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&select_generation, generation, cur.dinfo->devices,
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num_devices, matches, num_matches, specified_devices,
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num_devices_specified, select_mode,
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maxshowdevs, 0) == -1)
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errx(1, "%s", devstat_errbuf);
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return(argv);
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}
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static long
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getuptime(void)
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{
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struct timespec sp;
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(void)clock_gettime(CLOCK_MONOTONIC, &sp);
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return(sp.tv_sec);
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}
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static void
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fill_pcpu(struct pcpu ***pcpup, int* maxcpup)
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{
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struct pcpu **pcpu;
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int maxcpu, i;
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*pcpup = NULL;
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if (kd == NULL)
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return;
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maxcpu = kvm_getmaxcpu(kd);
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if (maxcpu < 0)
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errx(1, "kvm_getmaxcpu: %s", kvm_geterr(kd));
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pcpu = calloc(maxcpu, sizeof(struct pcpu *));
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if (pcpu == NULL)
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err(1, "calloc");
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for (i = 0; i < maxcpu; i++) {
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pcpu[i] = kvm_getpcpu(kd, i);
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if (pcpu[i] == (struct pcpu *)-1)
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errx(1, "kvm_getpcpu: %s", kvm_geterr(kd));
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}
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*maxcpup = maxcpu;
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*pcpup = pcpu;
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}
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static void
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free_pcpu(struct pcpu **pcpu, int maxcpu)
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{
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int i;
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for (i = 0; i < maxcpu; i++)
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free(pcpu[i]);
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free(pcpu);
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}
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static void
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fill_vmmeter(struct vmmeter *vmmp)
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{
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struct pcpu **pcpu;
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int maxcpu, i;
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if (kd != NULL) {
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kread(X_SUM, vmmp, sizeof(*vmmp));
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fill_pcpu(&pcpu, &maxcpu);
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for (i = 0; i < maxcpu; i++) {
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if (pcpu[i] == NULL)
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continue;
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#define ADD_FROM_PCPU(i, name) \
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vmmp->name += pcpu[i]->pc_cnt.name
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ADD_FROM_PCPU(i, v_swtch);
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ADD_FROM_PCPU(i, v_trap);
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ADD_FROM_PCPU(i, v_syscall);
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ADD_FROM_PCPU(i, v_intr);
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ADD_FROM_PCPU(i, v_soft);
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ADD_FROM_PCPU(i, v_vm_faults);
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ADD_FROM_PCPU(i, v_cow_faults);
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ADD_FROM_PCPU(i, v_cow_optim);
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ADD_FROM_PCPU(i, v_zfod);
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ADD_FROM_PCPU(i, v_ozfod);
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ADD_FROM_PCPU(i, v_swapin);
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ADD_FROM_PCPU(i, v_swapout);
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ADD_FROM_PCPU(i, v_swappgsin);
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ADD_FROM_PCPU(i, v_swappgsout);
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ADD_FROM_PCPU(i, v_vnodein);
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ADD_FROM_PCPU(i, v_vnodeout);
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ADD_FROM_PCPU(i, v_vnodepgsin);
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ADD_FROM_PCPU(i, v_vnodepgsout);
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ADD_FROM_PCPU(i, v_intrans);
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ADD_FROM_PCPU(i, v_tfree);
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ADD_FROM_PCPU(i, v_forks);
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ADD_FROM_PCPU(i, v_vforks);
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ADD_FROM_PCPU(i, v_rforks);
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ADD_FROM_PCPU(i, v_kthreads);
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ADD_FROM_PCPU(i, v_forkpages);
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ADD_FROM_PCPU(i, v_vforkpages);
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ADD_FROM_PCPU(i, v_rforkpages);
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ADD_FROM_PCPU(i, v_kthreadpages);
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#undef ADD_FROM_PCPU
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}
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free_pcpu(pcpu, maxcpu);
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} else {
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size_t size = sizeof(unsigned int);
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#define GET_VM_STATS(cat, name) \
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mysysctl("vm.stats." #cat "." #name, &vmmp->name, &size, NULL, 0)
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/* sys */
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GET_VM_STATS(sys, v_swtch);
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GET_VM_STATS(sys, v_trap);
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GET_VM_STATS(sys, v_syscall);
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GET_VM_STATS(sys, v_intr);
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GET_VM_STATS(sys, v_soft);
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/* vm */
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GET_VM_STATS(vm, v_vm_faults);
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GET_VM_STATS(vm, v_cow_faults);
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GET_VM_STATS(vm, v_cow_optim);
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GET_VM_STATS(vm, v_zfod);
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GET_VM_STATS(vm, v_ozfod);
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GET_VM_STATS(vm, v_swapin);
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GET_VM_STATS(vm, v_swapout);
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GET_VM_STATS(vm, v_swappgsin);
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GET_VM_STATS(vm, v_swappgsout);
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GET_VM_STATS(vm, v_vnodein);
|
|
GET_VM_STATS(vm, v_vnodeout);
|
|
GET_VM_STATS(vm, v_vnodepgsin);
|
|
GET_VM_STATS(vm, v_vnodepgsout);
|
|
GET_VM_STATS(vm, v_intrans);
|
|
GET_VM_STATS(vm, v_reactivated);
|
|
GET_VM_STATS(vm, v_pdwakeups);
|
|
GET_VM_STATS(vm, v_pdpages);
|
|
GET_VM_STATS(vm, v_tcached);
|
|
GET_VM_STATS(vm, v_dfree);
|
|
GET_VM_STATS(vm, v_pfree);
|
|
GET_VM_STATS(vm, v_tfree);
|
|
GET_VM_STATS(vm, v_page_size);
|
|
GET_VM_STATS(vm, v_page_count);
|
|
GET_VM_STATS(vm, v_free_reserved);
|
|
GET_VM_STATS(vm, v_free_target);
|
|
GET_VM_STATS(vm, v_free_min);
|
|
GET_VM_STATS(vm, v_free_count);
|
|
GET_VM_STATS(vm, v_wire_count);
|
|
GET_VM_STATS(vm, v_active_count);
|
|
GET_VM_STATS(vm, v_inactive_target);
|
|
GET_VM_STATS(vm, v_inactive_count);
|
|
GET_VM_STATS(vm, v_cache_count);
|
|
GET_VM_STATS(vm, v_cache_min);
|
|
GET_VM_STATS(vm, v_cache_max);
|
|
GET_VM_STATS(vm, v_pageout_free_min);
|
|
GET_VM_STATS(vm, v_interrupt_free_min);
|
|
/*GET_VM_STATS(vm, v_free_severe);*/
|
|
GET_VM_STATS(vm, v_forks);
|
|
GET_VM_STATS(vm, v_vforks);
|
|
GET_VM_STATS(vm, v_rforks);
|
|
GET_VM_STATS(vm, v_kthreads);
|
|
GET_VM_STATS(vm, v_forkpages);
|
|
GET_VM_STATS(vm, v_vforkpages);
|
|
GET_VM_STATS(vm, v_rforkpages);
|
|
GET_VM_STATS(vm, v_kthreadpages);
|
|
#undef GET_VM_STATS
|
|
}
|
|
}
|
|
|
|
static void
|
|
fill_vmtotal(struct vmtotal *vmtp)
|
|
{
|
|
if (kd != NULL) {
|
|
/* XXX fill vmtp */
|
|
errx(1, "not implemented");
|
|
} else {
|
|
size_t size = sizeof(*vmtp);
|
|
mysysctl("vm.vmtotal", vmtp, &size, NULL, 0);
|
|
if (size != sizeof(*vmtp))
|
|
errx(1, "vm.total size mismatch");
|
|
}
|
|
}
|
|
|
|
/* Determine how many cpu columns, and what index they are in kern.cp_times */
|
|
static int
|
|
getcpuinfo(u_long *maskp, int *maxidp)
|
|
{
|
|
int maxcpu;
|
|
int maxid;
|
|
int ncpus;
|
|
int i, j;
|
|
int empty;
|
|
size_t size;
|
|
long *times;
|
|
u_long mask;
|
|
|
|
if (kd != NULL)
|
|
errx(1, "not implemented");
|
|
mask = 0;
|
|
ncpus = 0;
|
|
size = sizeof(maxcpu);
|
|
mysysctl("kern.smp.maxcpus", &maxcpu, &size, NULL, 0);
|
|
if (size != sizeof(maxcpu))
|
|
errx(1, "sysctl kern.smp.maxcpus");
|
|
size = sizeof(long) * maxcpu * CPUSTATES;
|
|
times = malloc(size);
|
|
if (times == NULL)
|
|
err(1, "malloc %zd bytes", size);
|
|
mysysctl("kern.cp_times", times, &size, NULL, 0);
|
|
maxid = (size / CPUSTATES / sizeof(long)) - 1;
|
|
for (i = 0; i <= maxid; i++) {
|
|
empty = 1;
|
|
for (j = 0; empty && j < CPUSTATES; j++) {
|
|
if (times[i * CPUSTATES + j] != 0)
|
|
empty = 0;
|
|
}
|
|
if (!empty) {
|
|
mask |= (1ul << i);
|
|
ncpus++;
|
|
}
|
|
}
|
|
if (maskp)
|
|
*maskp = mask;
|
|
if (maxidp)
|
|
*maxidp = maxid;
|
|
return (ncpus);
|
|
}
|
|
|
|
|
|
static void
|
|
prthuman(u_int64_t val, int size)
|
|
{
|
|
char buf[10];
|
|
int flags;
|
|
|
|
if (size < 5 || size > 9)
|
|
errx(1, "doofus");
|
|
flags = HN_B | HN_NOSPACE | HN_DECIMAL;
|
|
humanize_number(buf, size, val, "", HN_AUTOSCALE, flags);
|
|
printf("%*s", size, buf);
|
|
}
|
|
|
|
static int hz, hdrcnt;
|
|
|
|
static long *cur_cp_times;
|
|
static long *last_cp_times;
|
|
static size_t size_cp_times;
|
|
|
|
static void
|
|
dovmstat(unsigned int interval, int reps)
|
|
{
|
|
struct vmtotal total;
|
|
time_t uptime, halfuptime;
|
|
struct devinfo *tmp_dinfo;
|
|
size_t size;
|
|
int ncpus, maxid;
|
|
u_long cpumask;
|
|
int rate_adj;
|
|
|
|
uptime = getuptime();
|
|
halfuptime = uptime / 2;
|
|
rate_adj = 1;
|
|
|
|
/*
|
|
* If the user stops the program (control-Z) and then resumes it,
|
|
* print out the header again.
|
|
*/
|
|
(void)signal(SIGCONT, needhdr);
|
|
|
|
/*
|
|
* If our standard output is a tty, then install a SIGWINCH handler
|
|
* and set wresized so that our first iteration through the main
|
|
* vmstat loop will peek at the terminal's current rows to find out
|
|
* how many lines can fit in a screenful of output.
|
|
*/
|
|
if (isatty(fileno(stdout)) != 0) {
|
|
wresized = 1;
|
|
(void)signal(SIGWINCH, needresize);
|
|
} else {
|
|
wresized = 0;
|
|
winlines = VMSTAT_DEFAULT_LINES;
|
|
}
|
|
|
|
if (kd != NULL) {
|
|
if (namelist[X_STATHZ].n_type != 0 &&
|
|
namelist[X_STATHZ].n_value != 0)
|
|
kread(X_STATHZ, &hz, sizeof(hz));
|
|
if (!hz)
|
|
kread(X_HZ, &hz, sizeof(hz));
|
|
} else {
|
|
struct clockinfo clockrate;
|
|
|
|
size = sizeof(clockrate);
|
|
mysysctl("kern.clockrate", &clockrate, &size, NULL, 0);
|
|
if (size != sizeof(clockrate))
|
|
errx(1, "clockrate size mismatch");
|
|
hz = clockrate.hz;
|
|
}
|
|
|
|
if (Pflag) {
|
|
ncpus = getcpuinfo(&cpumask, &maxid);
|
|
size_cp_times = sizeof(long) * (maxid + 1) * CPUSTATES;
|
|
cur_cp_times = calloc(1, size_cp_times);
|
|
last_cp_times = calloc(1, size_cp_times);
|
|
}
|
|
for (hdrcnt = 1;;) {
|
|
if (!--hdrcnt)
|
|
printhdr(ncpus, cpumask);
|
|
if (kd != NULL) {
|
|
if (kvm_getcptime(kd, cur.cp_time) < 0)
|
|
errx(1, "kvm_getcptime: %s", kvm_geterr(kd));
|
|
} else {
|
|
size = sizeof(cur.cp_time);
|
|
mysysctl("kern.cp_time", &cur.cp_time, &size, NULL, 0);
|
|
if (size != sizeof(cur.cp_time))
|
|
errx(1, "cp_time size mismatch");
|
|
}
|
|
if (Pflag) {
|
|
size = size_cp_times;
|
|
mysysctl("kern.cp_times", cur_cp_times, &size, NULL, 0);
|
|
if (size != size_cp_times)
|
|
errx(1, "cp_times mismatch");
|
|
}
|
|
|
|
tmp_dinfo = last.dinfo;
|
|
last.dinfo = cur.dinfo;
|
|
cur.dinfo = tmp_dinfo;
|
|
last.snap_time = cur.snap_time;
|
|
|
|
/*
|
|
* Here what we want to do is refresh our device stats.
|
|
* getdevs() returns 1 when the device list has changed.
|
|
* If the device list has changed, we want to go through
|
|
* the selection process again, in case a device that we
|
|
* were previously displaying has gone away.
|
|
*/
|
|
switch (devstat_getdevs(NULL, &cur)) {
|
|
case -1:
|
|
errx(1, "%s", devstat_errbuf);
|
|
break;
|
|
case 1: {
|
|
int retval;
|
|
|
|
num_devices = cur.dinfo->numdevs;
|
|
generation = cur.dinfo->generation;
|
|
|
|
retval = devstat_selectdevs(&dev_select, &num_selected,
|
|
&num_selections, &select_generation,
|
|
generation, cur.dinfo->devices,
|
|
num_devices, matches, num_matches,
|
|
specified_devices,
|
|
num_devices_specified, select_mode,
|
|
maxshowdevs, 0);
|
|
switch (retval) {
|
|
case -1:
|
|
errx(1, "%s", devstat_errbuf);
|
|
break;
|
|
case 1:
|
|
printhdr(ncpus, cpumask);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
fill_vmmeter(&sum);
|
|
fill_vmtotal(&total);
|
|
(void)printf("%2d %1d %1d",
|
|
total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw);
|
|
#define vmstat_pgtok(a) ((a) * (sum.v_page_size >> 10))
|
|
#define rate(x) (((x) * rate_adj + halfuptime) / uptime) /* round */
|
|
if (hflag) {
|
|
printf(" ");
|
|
prthuman(total.t_avm * (u_int64_t)sum.v_page_size, 7);
|
|
printf(" ");
|
|
prthuman(total.t_free * (u_int64_t)sum.v_page_size, 6);
|
|
printf(" ");
|
|
} else {
|
|
printf(" %7d ", vmstat_pgtok(total.t_avm));
|
|
printf(" %6d ", vmstat_pgtok(total.t_free));
|
|
}
|
|
(void)printf("%5lu ",
|
|
(unsigned long)rate(sum.v_vm_faults - osum.v_vm_faults));
|
|
(void)printf("%3lu ",
|
|
(unsigned long)rate(sum.v_reactivated - osum.v_reactivated));
|
|
(void)printf("%3lu ",
|
|
(unsigned long)rate(sum.v_swapin + sum.v_vnodein -
|
|
(osum.v_swapin + osum.v_vnodein)));
|
|
(void)printf("%3lu ",
|
|
(unsigned long)rate(sum.v_swapout + sum.v_vnodeout -
|
|
(osum.v_swapout + osum.v_vnodeout)));
|
|
(void)printf("%5lu ",
|
|
(unsigned long)rate(sum.v_tfree - osum.v_tfree));
|
|
(void)printf("%3lu ",
|
|
(unsigned long)rate(sum.v_pdpages - osum.v_pdpages));
|
|
devstats();
|
|
(void)printf("%4lu %4lu %4lu",
|
|
(unsigned long)rate(sum.v_intr - osum.v_intr),
|
|
(unsigned long)rate(sum.v_syscall - osum.v_syscall),
|
|
(unsigned long)rate(sum.v_swtch - osum.v_swtch));
|
|
if (Pflag)
|
|
pcpustats(ncpus, cpumask, maxid);
|
|
else
|
|
cpustats();
|
|
(void)printf("\n");
|
|
(void)fflush(stdout);
|
|
if (reps >= 0 && --reps <= 0)
|
|
break;
|
|
osum = sum;
|
|
uptime = interval;
|
|
rate_adj = 1000;
|
|
/*
|
|
* We round upward to avoid losing low-frequency events
|
|
* (i.e., >= 1 per interval but < 1 per millisecond).
|
|
*/
|
|
if (interval != 1)
|
|
halfuptime = (uptime + 1) / 2;
|
|
else
|
|
halfuptime = 0;
|
|
(void)usleep(interval * 1000);
|
|
}
|
|
}
|
|
|
|
static void
|
|
printhdr(int ncpus, u_long cpumask)
|
|
{
|
|
int i, num_shown;
|
|
|
|
num_shown = (num_selected < maxshowdevs) ? num_selected : maxshowdevs;
|
|
(void)printf(" procs memory page%*s", 19, "");
|
|
if (num_shown > 1)
|
|
(void)printf(" disks %*s", num_shown * 4 - 7, "");
|
|
else if (num_shown == 1)
|
|
(void)printf("disk");
|
|
(void)printf(" faults ");
|
|
if (Pflag) {
|
|
for (i = 0; i < ncpus; i++) {
|
|
if (cpumask & (1ul << i))
|
|
printf("cpu%-2d ", i);
|
|
}
|
|
printf("\n");
|
|
} else
|
|
printf("cpu\n");
|
|
(void)printf(" r b w avm fre flt re pi po fr sr ");
|
|
for (i = 0; i < num_devices; i++)
|
|
if ((dev_select[i].selected)
|
|
&& (dev_select[i].selected <= maxshowdevs))
|
|
(void)printf("%c%c%d ", dev_select[i].device_name[0],
|
|
dev_select[i].device_name[1],
|
|
dev_select[i].unit_number);
|
|
(void)printf(" in sy cs");
|
|
if (Pflag) {
|
|
for (i = 0; i < ncpus; i++)
|
|
printf(" us sy id");
|
|
printf("\n");
|
|
} else
|
|
printf(" us sy id\n");
|
|
if (wresized != 0)
|
|
doresize();
|
|
hdrcnt = winlines;
|
|
}
|
|
|
|
/*
|
|
* Force a header to be prepended to the next output.
|
|
*/
|
|
static void
|
|
needhdr(int dummy __unused)
|
|
{
|
|
|
|
hdrcnt = 1;
|
|
}
|
|
|
|
/*
|
|
* When the terminal is resized, force an update of the maximum number of rows
|
|
* printed between each header repetition. Then force a new header to be
|
|
* prepended to the next output.
|
|
*/
|
|
void
|
|
needresize(int signo)
|
|
{
|
|
|
|
wresized = 1;
|
|
hdrcnt = 1;
|
|
}
|
|
|
|
/*
|
|
* Update the global `winlines' count of terminal rows.
|
|
*/
|
|
void
|
|
doresize(void)
|
|
{
|
|
int status;
|
|
struct winsize w;
|
|
|
|
for (;;) {
|
|
status = ioctl(fileno(stdout), TIOCGWINSZ, &w);
|
|
if (status == -1 && errno == EINTR)
|
|
continue;
|
|
else if (status == -1)
|
|
err(1, "ioctl");
|
|
if (w.ws_row > 3)
|
|
winlines = w.ws_row - 3;
|
|
else
|
|
winlines = VMSTAT_DEFAULT_LINES;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Inhibit doresize() calls until we are rescheduled by SIGWINCH.
|
|
*/
|
|
wresized = 0;
|
|
}
|
|
|
|
#ifdef notyet
|
|
static void
|
|
dotimes(void)
|
|
{
|
|
unsigned int pgintime, rectime;
|
|
|
|
kread(X_REC, &rectime, sizeof(rectime));
|
|
kread(X_PGIN, &pgintime, sizeof(pgintime));
|
|
kread(X_SUM, &sum, sizeof(sum));
|
|
(void)printf("%u reclaims, %u total time (usec)\n",
|
|
sum.v_pgrec, rectime);
|
|
(void)printf("average: %u usec / reclaim\n", rectime / sum.v_pgrec);
|
|
(void)printf("\n");
|
|
(void)printf("%u page ins, %u total time (msec)\n",
|
|
sum.v_pgin, pgintime / 10);
|
|
(void)printf("average: %8.1f msec / page in\n",
|
|
pgintime / (sum.v_pgin * 10.0));
|
|
}
|
|
#endif
|
|
|
|
static long
|
|
pct(long top, long bot)
|
|
{
|
|
long ans;
|
|
|
|
if (bot == 0)
|
|
return(0);
|
|
ans = (quad_t)top * 100 / bot;
|
|
return (ans);
|
|
}
|
|
|
|
#define PCT(top, bot) pct((long)(top), (long)(bot))
|
|
|
|
static void
|
|
dosum(void)
|
|
{
|
|
struct nchstats lnchstats;
|
|
long nchtotal;
|
|
|
|
fill_vmmeter(&sum);
|
|
(void)printf("%9u cpu context switches\n", sum.v_swtch);
|
|
(void)printf("%9u device interrupts\n", sum.v_intr);
|
|
(void)printf("%9u software interrupts\n", sum.v_soft);
|
|
(void)printf("%9u traps\n", sum.v_trap);
|
|
(void)printf("%9u system calls\n", sum.v_syscall);
|
|
(void)printf("%9u kernel threads created\n", sum.v_kthreads);
|
|
(void)printf("%9u fork() calls\n", sum.v_forks);
|
|
(void)printf("%9u vfork() calls\n", sum.v_vforks);
|
|
(void)printf("%9u rfork() calls\n", sum.v_rforks);
|
|
(void)printf("%9u swap pager pageins\n", sum.v_swapin);
|
|
(void)printf("%9u swap pager pages paged in\n", sum.v_swappgsin);
|
|
(void)printf("%9u swap pager pageouts\n", sum.v_swapout);
|
|
(void)printf("%9u swap pager pages paged out\n", sum.v_swappgsout);
|
|
(void)printf("%9u vnode pager pageins\n", sum.v_vnodein);
|
|
(void)printf("%9u vnode pager pages paged in\n", sum.v_vnodepgsin);
|
|
(void)printf("%9u vnode pager pageouts\n", sum.v_vnodeout);
|
|
(void)printf("%9u vnode pager pages paged out\n", sum.v_vnodepgsout);
|
|
(void)printf("%9u page daemon wakeups\n", sum.v_pdwakeups);
|
|
(void)printf("%9u pages examined by the page daemon\n", sum.v_pdpages);
|
|
(void)printf("%9u pages reactivated\n", sum.v_reactivated);
|
|
(void)printf("%9u copy-on-write faults\n", sum.v_cow_faults);
|
|
(void)printf("%9u copy-on-write optimized faults\n", sum.v_cow_optim);
|
|
(void)printf("%9u zero fill pages zeroed\n", sum.v_zfod);
|
|
(void)printf("%9u zero fill pages prezeroed\n", sum.v_ozfod);
|
|
(void)printf("%9u intransit blocking page faults\n", sum.v_intrans);
|
|
(void)printf("%9u total VM faults taken\n", sum.v_vm_faults);
|
|
(void)printf("%9u pages affected by kernel thread creation\n", sum.v_kthreadpages);
|
|
(void)printf("%9u pages affected by fork()\n", sum.v_forkpages);
|
|
(void)printf("%9u pages affected by vfork()\n", sum.v_vforkpages);
|
|
(void)printf("%9u pages affected by rfork()\n", sum.v_rforkpages);
|
|
(void)printf("%9u pages cached\n", sum.v_tcached);
|
|
(void)printf("%9u pages freed\n", sum.v_tfree);
|
|
(void)printf("%9u pages freed by daemon\n", sum.v_dfree);
|
|
(void)printf("%9u pages freed by exiting processes\n", sum.v_pfree);
|
|
(void)printf("%9u pages active\n", sum.v_active_count);
|
|
(void)printf("%9u pages inactive\n", sum.v_inactive_count);
|
|
(void)printf("%9u pages in VM cache\n", sum.v_cache_count);
|
|
(void)printf("%9u pages wired down\n", sum.v_wire_count);
|
|
(void)printf("%9u pages free\n", sum.v_free_count);
|
|
(void)printf("%9u bytes per page\n", sum.v_page_size);
|
|
if (kd != NULL) {
|
|
kread(X_NCHSTATS, &lnchstats, sizeof(lnchstats));
|
|
} else {
|
|
size_t size = sizeof(lnchstats);
|
|
mysysctl("vfs.cache.nchstats", &lnchstats, &size, NULL, 0);
|
|
if (size != sizeof(lnchstats))
|
|
errx(1, "vfs.cache.nchstats size mismatch");
|
|
}
|
|
nchtotal = lnchstats.ncs_goodhits + lnchstats.ncs_neghits +
|
|
lnchstats.ncs_badhits + lnchstats.ncs_falsehits +
|
|
lnchstats.ncs_miss + lnchstats.ncs_long;
|
|
(void)printf("%9ld total name lookups\n", nchtotal);
|
|
(void)printf(
|
|
"%9s cache hits (%ld%% pos + %ld%% neg) system %ld%% per-directory\n",
|
|
"", PCT(lnchstats.ncs_goodhits, nchtotal),
|
|
PCT(lnchstats.ncs_neghits, nchtotal),
|
|
PCT(lnchstats.ncs_pass2, nchtotal));
|
|
(void)printf("%9s deletions %ld%%, falsehits %ld%%, toolong %ld%%\n", "",
|
|
PCT(lnchstats.ncs_badhits, nchtotal),
|
|
PCT(lnchstats.ncs_falsehits, nchtotal),
|
|
PCT(lnchstats.ncs_long, nchtotal));
|
|
}
|
|
|
|
static void
|
|
doforkst(void)
|
|
{
|
|
fill_vmmeter(&sum);
|
|
(void)printf("%u forks, %u pages, average %.2f\n",
|
|
sum.v_forks, sum.v_forkpages,
|
|
sum.v_forks == 0 ? 0.0 :
|
|
(double)sum.v_forkpages / sum.v_forks);
|
|
(void)printf("%u vforks, %u pages, average %.2f\n",
|
|
sum.v_vforks, sum.v_vforkpages,
|
|
sum.v_vforks == 0 ? 0.0 :
|
|
(double)sum.v_vforkpages / sum.v_vforks);
|
|
(void)printf("%u rforks, %u pages, average %.2f\n",
|
|
sum.v_rforks, sum.v_rforkpages,
|
|
sum.v_rforks == 0 ? 0.0 :
|
|
(double)sum.v_rforkpages / sum.v_rforks);
|
|
}
|
|
|
|
static void
|
|
devstats(void)
|
|
{
|
|
int dn, state;
|
|
long double transfers_per_second;
|
|
long double busy_seconds;
|
|
long tmp;
|
|
|
|
for (state = 0; state < CPUSTATES; ++state) {
|
|
tmp = cur.cp_time[state];
|
|
cur.cp_time[state] -= last.cp_time[state];
|
|
last.cp_time[state] = tmp;
|
|
}
|
|
|
|
busy_seconds = cur.snap_time - last.snap_time;
|
|
|
|
for (dn = 0; dn < num_devices; dn++) {
|
|
int di;
|
|
|
|
if ((dev_select[dn].selected == 0)
|
|
|| (dev_select[dn].selected > maxshowdevs))
|
|
continue;
|
|
|
|
di = dev_select[dn].position;
|
|
|
|
if (devstat_compute_statistics(&cur.dinfo->devices[di],
|
|
&last.dinfo->devices[di], busy_seconds,
|
|
DSM_TRANSFERS_PER_SECOND, &transfers_per_second,
|
|
DSM_NONE) != 0)
|
|
errx(1, "%s", devstat_errbuf);
|
|
|
|
(void)printf("%3.0Lf ", transfers_per_second);
|
|
}
|
|
}
|
|
|
|
static void
|
|
percent(double pct, int *over)
|
|
{
|
|
char buf[10];
|
|
int l;
|
|
|
|
l = snprintf(buf, sizeof(buf), "%.0f", pct);
|
|
if (l == 1 && *over) {
|
|
printf("%s", buf);
|
|
(*over)--;
|
|
} else
|
|
printf("%2s", buf);
|
|
if (l > 2)
|
|
(*over)++;
|
|
}
|
|
|
|
static void
|
|
cpustats(void)
|
|
{
|
|
int state, over;
|
|
double lpct, total;
|
|
|
|
total = 0;
|
|
for (state = 0; state < CPUSTATES; ++state)
|
|
total += cur.cp_time[state];
|
|
if (total)
|
|
lpct = 100.0 / total;
|
|
else
|
|
lpct = 0.0;
|
|
over = 0;
|
|
printf(" ");
|
|
percent((cur.cp_time[CP_USER] + cur.cp_time[CP_NICE]) * lpct, &over);
|
|
printf(" ");
|
|
percent((cur.cp_time[CP_SYS] + cur.cp_time[CP_INTR]) * lpct, &over);
|
|
printf(" ");
|
|
percent(cur.cp_time[CP_IDLE] * lpct, &over);
|
|
}
|
|
|
|
static void
|
|
pcpustats(int ncpus, u_long cpumask, int maxid)
|
|
{
|
|
int state, i;
|
|
double lpct, total;
|
|
long tmp;
|
|
int over;
|
|
|
|
/* devstats does this for cp_time */
|
|
for (i = 0; i <= maxid; i++) {
|
|
if ((cpumask & (1ul << i)) == 0)
|
|
continue;
|
|
for (state = 0; state < CPUSTATES; ++state) {
|
|
tmp = cur_cp_times[i * CPUSTATES + state];
|
|
cur_cp_times[i * CPUSTATES + state] -= last_cp_times[i * CPUSTATES + state];
|
|
last_cp_times[i * CPUSTATES + state] = tmp;
|
|
}
|
|
}
|
|
|
|
over = 0;
|
|
for (i = 0; i <= maxid; i++) {
|
|
if ((cpumask & (1ul << i)) == 0)
|
|
continue;
|
|
total = 0;
|
|
for (state = 0; state < CPUSTATES; ++state)
|
|
total += cur_cp_times[i * CPUSTATES + state];
|
|
if (total)
|
|
lpct = 100.0 / total;
|
|
else
|
|
lpct = 0.0;
|
|
printf(" ");
|
|
percent((cur_cp_times[i * CPUSTATES + CP_USER] +
|
|
cur_cp_times[i * CPUSTATES + CP_NICE]) * lpct, &over);
|
|
printf(" ");
|
|
percent((cur_cp_times[i * CPUSTATES + CP_SYS] +
|
|
cur_cp_times[i * CPUSTATES + CP_INTR]) * lpct, &over);
|
|
printf(" ");
|
|
percent(cur_cp_times[i * CPUSTATES + CP_IDLE] * lpct, &over);
|
|
}
|
|
}
|
|
|
|
static void
|
|
dointr(void)
|
|
{
|
|
unsigned long *intrcnt, uptime;
|
|
uint64_t inttotal;
|
|
size_t clen, inamlen, intrcntlen, istrnamlen;
|
|
unsigned int i, nintr;
|
|
char *intrname, *tintrname;
|
|
|
|
uptime = getuptime();
|
|
if (kd != NULL) {
|
|
kread(X_SINTRCNT, &intrcntlen, sizeof(intrcntlen));
|
|
kread(X_SINTRNAMES, &inamlen, sizeof(inamlen));
|
|
if ((intrcnt = malloc(intrcntlen)) == NULL ||
|
|
(intrname = malloc(inamlen)) == NULL)
|
|
err(1, "malloc()");
|
|
kread(X_INTRCNT, intrcnt, intrcntlen);
|
|
kread(X_INTRNAMES, intrname, inamlen);
|
|
} else {
|
|
for (intrcnt = NULL, intrcntlen = 1024; ; intrcntlen *= 2) {
|
|
if ((intrcnt = reallocf(intrcnt, intrcntlen)) == NULL)
|
|
err(1, "reallocf()");
|
|
if (mysysctl("hw.intrcnt",
|
|
intrcnt, &intrcntlen, NULL, 0) == 0)
|
|
break;
|
|
}
|
|
for (intrname = NULL, inamlen = 1024; ; inamlen *= 2) {
|
|
if ((intrname = reallocf(intrname, inamlen)) == NULL)
|
|
err(1, "reallocf()");
|
|
if (mysysctl("hw.intrnames",
|
|
intrname, &inamlen, NULL, 0) == 0)
|
|
break;
|
|
}
|
|
}
|
|
nintr = intrcntlen / sizeof(unsigned long);
|
|
tintrname = intrname;
|
|
istrnamlen = strlen("interrupt");
|
|
for (i = 0; i < nintr; i++) {
|
|
clen = strlen(tintrname);
|
|
if (clen > istrnamlen)
|
|
istrnamlen = clen;
|
|
tintrname += clen + 1;
|
|
}
|
|
(void)printf("%-*s %20s %10s\n", (int)istrnamlen, "interrupt", "total",
|
|
"rate");
|
|
inttotal = 0;
|
|
for (i = 0; i < nintr; i++) {
|
|
if (intrname[0] != '\0' && (*intrcnt != 0 || aflag))
|
|
(void)printf("%-*s %20lu %10lu\n", (int)istrnamlen,
|
|
intrname, *intrcnt, *intrcnt / uptime);
|
|
intrname += strlen(intrname) + 1;
|
|
inttotal += *intrcnt++;
|
|
}
|
|
(void)printf("%-*s %20" PRIu64 " %10" PRIu64 "\n", (int)istrnamlen,
|
|
"Total", inttotal, inttotal / uptime);
|
|
}
|
|
|
|
static void
|
|
domemstat_malloc(void)
|
|
{
|
|
struct memory_type_list *mtlp;
|
|
struct memory_type *mtp;
|
|
int error, first, i;
|
|
|
|
mtlp = memstat_mtl_alloc();
|
|
if (mtlp == NULL) {
|
|
warn("memstat_mtl_alloc");
|
|
return;
|
|
}
|
|
if (kd == NULL) {
|
|
if (memstat_sysctl_malloc(mtlp, 0) < 0) {
|
|
warnx("memstat_sysctl_malloc: %s",
|
|
memstat_strerror(memstat_mtl_geterror(mtlp)));
|
|
return;
|
|
}
|
|
} else {
|
|
if (memstat_kvm_malloc(mtlp, kd) < 0) {
|
|
error = memstat_mtl_geterror(mtlp);
|
|
if (error == MEMSTAT_ERROR_KVM)
|
|
warnx("memstat_kvm_malloc: %s",
|
|
kvm_geterr(kd));
|
|
else
|
|
warnx("memstat_kvm_malloc: %s",
|
|
memstat_strerror(error));
|
|
}
|
|
}
|
|
printf("%13s %5s %6s %7s %8s Size(s)\n", "Type", "InUse", "MemUse",
|
|
"HighUse", "Requests");
|
|
for (mtp = memstat_mtl_first(mtlp); mtp != NULL;
|
|
mtp = memstat_mtl_next(mtp)) {
|
|
if (memstat_get_numallocs(mtp) == 0 &&
|
|
memstat_get_count(mtp) == 0)
|
|
continue;
|
|
printf("%13s %5" PRIu64 " %5" PRIu64 "K %7s %8" PRIu64 " ",
|
|
memstat_get_name(mtp), memstat_get_count(mtp),
|
|
(memstat_get_bytes(mtp) + 1023) / 1024, "-",
|
|
memstat_get_numallocs(mtp));
|
|
first = 1;
|
|
for (i = 0; i < 32; i++) {
|
|
if (memstat_get_sizemask(mtp) & (1 << i)) {
|
|
if (!first)
|
|
printf(",");
|
|
printf("%d", 1 << (i + 4));
|
|
first = 0;
|
|
}
|
|
}
|
|
printf("\n");
|
|
}
|
|
memstat_mtl_free(mtlp);
|
|
}
|
|
|
|
static void
|
|
domemstat_zone(void)
|
|
{
|
|
struct memory_type_list *mtlp;
|
|
struct memory_type *mtp;
|
|
char name[MEMTYPE_MAXNAME + 1];
|
|
int error;
|
|
|
|
mtlp = memstat_mtl_alloc();
|
|
if (mtlp == NULL) {
|
|
warn("memstat_mtl_alloc");
|
|
return;
|
|
}
|
|
if (kd == NULL) {
|
|
if (memstat_sysctl_uma(mtlp, 0) < 0) {
|
|
warnx("memstat_sysctl_uma: %s",
|
|
memstat_strerror(memstat_mtl_geterror(mtlp)));
|
|
return;
|
|
}
|
|
} else {
|
|
if (memstat_kvm_uma(mtlp, kd) < 0) {
|
|
error = memstat_mtl_geterror(mtlp);
|
|
if (error == MEMSTAT_ERROR_KVM)
|
|
warnx("memstat_kvm_uma: %s",
|
|
kvm_geterr(kd));
|
|
else
|
|
warnx("memstat_kvm_uma: %s",
|
|
memstat_strerror(error));
|
|
}
|
|
}
|
|
printf("%-20s %6s %6s %8s %8s %8s %4s %4s\n\n", "ITEM", "SIZE",
|
|
"LIMIT", "USED", "FREE", "REQ", "FAIL", "SLEEP");
|
|
for (mtp = memstat_mtl_first(mtlp); mtp != NULL;
|
|
mtp = memstat_mtl_next(mtp)) {
|
|
strlcpy(name, memstat_get_name(mtp), MEMTYPE_MAXNAME);
|
|
strcat(name, ":");
|
|
printf("%-20s %6" PRIu64 ", %6" PRIu64 ",%8" PRIu64 ",%8" PRIu64
|
|
",%8" PRIu64 ",%4" PRIu64 ",%4" PRIu64 "\n", name,
|
|
memstat_get_size(mtp), memstat_get_countlimit(mtp),
|
|
memstat_get_count(mtp), memstat_get_free(mtp),
|
|
memstat_get_numallocs(mtp), memstat_get_failures(mtp),
|
|
memstat_get_sleeps(mtp));
|
|
}
|
|
memstat_mtl_free(mtlp);
|
|
printf("\n");
|
|
}
|
|
|
|
/*
|
|
* kread reads something from the kernel, given its nlist index.
|
|
*/
|
|
static void
|
|
kreado(int nlx, void *addr, size_t size, size_t offset)
|
|
{
|
|
const char *sym;
|
|
|
|
if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) {
|
|
sym = namelist[nlx].n_name;
|
|
if (*sym == '_')
|
|
++sym;
|
|
errx(1, "symbol %s not defined", sym);
|
|
}
|
|
if ((size_t)kvm_read(kd, namelist[nlx].n_value + offset, addr,
|
|
size) != size) {
|
|
sym = namelist[nlx].n_name;
|
|
if (*sym == '_')
|
|
++sym;
|
|
errx(1, "%s: %s", sym, kvm_geterr(kd));
|
|
}
|
|
}
|
|
|
|
static void
|
|
kread(int nlx, void *addr, size_t size)
|
|
{
|
|
kreado(nlx, addr, size, 0);
|
|
}
|
|
|
|
static char *
|
|
kgetstr(const char *strp)
|
|
{
|
|
int n = 0, size = 1;
|
|
char *ret = NULL;
|
|
|
|
do {
|
|
if (size == n + 1) {
|
|
ret = realloc(ret, size);
|
|
if (ret == NULL)
|
|
err(1, "%s: realloc", __func__);
|
|
size *= 2;
|
|
}
|
|
if (kvm_read(kd, (u_long)strp + n, &ret[n], 1) != 1)
|
|
errx(1, "%s: %s", __func__, kvm_geterr(kd));
|
|
} while (ret[n++] != '\0');
|
|
return (ret);
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
(void)fprintf(stderr, "%s%s",
|
|
"usage: vmstat [-afHhimPsz] [-c count] [-M core [-N system]] [-w wait]\n",
|
|
" [-n devs] [-p type,if,pass] [disks]\n");
|
|
exit(1);
|
|
}
|