diff options
Diffstat (limited to 'usr.bin/vmstat')
| -rw-r--r-- | usr.bin/vmstat/Makefile | 9 | ||||
| -rw-r--r-- | usr.bin/vmstat/vmstat.8 | 347 | ||||
| -rw-r--r-- | usr.bin/vmstat/vmstat.c | 1039 |
3 files changed, 1395 insertions, 0 deletions
diff --git a/usr.bin/vmstat/Makefile b/usr.bin/vmstat/Makefile new file mode 100644 index 000000000000..da2a08da33ee --- /dev/null +++ b/usr.bin/vmstat/Makefile @@ -0,0 +1,9 @@ +# @(#)Makefile 8.1 (Berkeley) 6/6/93 +# $FreeBSD$ + +PROG= vmstat +MAN= vmstat.8 +DPADD= ${LIBDEVSTAT} ${LIBKVM} +LDADD= -ldevstat -lkvm + +.include <bsd.prog.mk> diff --git a/usr.bin/vmstat/vmstat.8 b/usr.bin/vmstat/vmstat.8 new file mode 100644 index 000000000000..4fe175803423 --- /dev/null +++ b/usr.bin/vmstat/vmstat.8 @@ -0,0 +1,347 @@ +.\" Copyright (c) 1986, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)vmstat.8 8.1 (Berkeley) 6/6/93 +.\" $FreeBSD$ +.\" +.Dd December 10, 2003 +.Dt VMSTAT 8 +.Os +.Sh NAME +.Nm vmstat +.Nd report virtual memory statistics +.Sh SYNOPSIS +.Nm +.\" .Op Fl fimst +.Op Fl afimsz +.Op Fl c Ar count +.Op Fl M Ar core Op Fl N Ar system +.Op Fl w Ar wait +.Op Fl n Ar devs +.Oo +.Fl p +.Sm off +.Ar type , if , pass +.Sm on +.Oc +.Op Ar disks +.Sh DESCRIPTION +The +.Nm +utility reports certain kernel statistics kept about process, virtual memory, +disk, trap and cpu activity. +.Pp +If the +.Fl M +option is not specified, information is obtained from +the currently running kernel via the +.Xr sysctl 3 +interface. +Otherwise, information is read from the specified core file, +using the name list from the specified kernel image (or from +the default image). +.Pp +The options are as follows: +.Bl -tag -width indent +.It Fl a +When used with +.Fl i , +include statistics about interrupts that have never been generated. +.It Fl c +Repeat the display +.Ar count +times. +The first display is for the time since a reboot and each subsequent +report is for the time period since the last display. +If no repeat +.Ar count +is specified, and +.Fl w +is specified, the default is infinity, otherwise the default is one. +.It Fl f +Report on the number +.Xr fork 2 , +.Xr vfork 2 +and +.Xr rfork 2 +system calls since system startup, and the number of pages of virtual memory +involved in each. +.It Fl i +Report on the number of interrupts taken by each device since system +startup. +.It Fl M +Extract values associated with the name list from the specified +.Ar core . +.It Fl N +If +.Fl M +is also specified, +extract the name list from the specified +.Ar system +instead of the default, +which is the kernel image the system has booted from. +.It Fl m +Report on the usage of kernel dynamic memory listed first by size of +allocation and then by type of usage. +.It Fl n +Change the maximum number of disks to display from the default of 2. +.It Fl p +Specify which types of devices to display. +There are three different +categories of devices: +.Pp +.Bl -tag -width indent -compact +.It device type: +.Bl -tag -width 9n -compact +.It da +Direct Access devices +.It sa +Sequential Access devices +.It printer +Printers +.It proc +Processor devices +.It worm +Write Once Read Multiple devices +.It cd +CD devices +.It scanner +Scanner devices +.It optical +Optical Memory devices +.It changer +Medium Changer devices +.It comm +Communication devices +.It array +Storage Array devices +.It enclosure +Enclosure Services devices +.It floppy +Floppy devices +.El +.Pp +.It interface: +.Bl -tag -width 9n -compact +.It IDE +Integrated Drive Electronics devices +.It SCSI +Small Computer System Interface devices +.It other +Any other device interface +.El +.Pp +.It passthrough: +.Bl -tag -width 9n -compact +.It pass +Passthrough devices +.El +.El +.Pp +The user must specify at least one device type, and may specify at most +one device type from each category. +Multiple device types in a single +device type statement must be separated by commas. +.Pp +Any number of +.Fl p +arguments may be specified on the command line. +All +.Fl p +arguments are ORed together to form a matching expression against which +all devices in the system are compared. +Any device that fully matches +any +.Fl p +argument will be included in the +.Nm +output, up to three devices, or the maximum number of devices specified +by the user. +.It Fl s +Display the contents of the +.Em sum +structure, giving the total number of several kinds of paging related +events which have occurred since system startup. +.\" .It Fl t +.\" Report on the number of page in and page reclaims since system startup, +.\" and the amount of time required by each. +.It Fl w +Pause +.Ar wait +seconds between each display. +If no repeat +.Ar wait +interval is specified, the default is 1 second. +.It Fl z +Report on memory used by the kernel zone allocator, by zone. +The information shown is the same as that returned by the +.Va vm.zone +sysctl variable. +.El +.Pp +By default, +.Nm +displays the following information: +.Pp +.Bl -tag -width indent +.It procs +Information about the numbers of processes in various states. +.Pp +.Bl -tag -width indent -compact +.It r +in run queue +.It b +blocked for resources (i/o, paging, etc.) +.It w +runnable or short sleeper (< 20 secs) but swapped +.El +.It memory +Information about the usage of virtual and real memory. +Virtual pages (reported in units of 1024 bytes) are considered active if +they belong to processes which are running or have run in the last 20 +seconds. +.Pp +.Bl -tag -width indent -compact +.It avm +active virtual pages +.It fre +size of the free list +.El +.It page +Information about page faults and paging activity. +These are averaged each five seconds, and given in units per second. +.Pp +.Bl -tag -width indent -compact +.It flt +total number of page faults +.It re +page reclaims (simulating reference bits) +.\" .It at +.\" pages attached (found in free list) +.It pi +pages paged in +.It po +pages paged out +.It fr +pages freed per second +.\" .It de +.\" anticipated short term memory shortfall +.It sr +pages scanned by clock algorithm, per-second +.El +.It disks +Disk operations per second (this field is system dependent). +Typically paging will be split across the available drives. +The header of the field is the first two characters of the disk name and +the unit number. +If more than three disk drives are configured in the system, +.Nm +displays only the first three drives, unless the user specifies the +.Fl n +argument to increase the number of drives displayed. +This will probably +cause the display to exceed 80 columns, however. +To force +.Nm +to display specific drives, their names may be supplied on the command line. +The +.Nm +utility +defaults to show disks first, and then various other random devices in the +system to add up to three devices, if there are that many devices in the +system. +If devices are specified on the command line, or if a device type +matching pattern is specified (see above), +.Nm +will only display the given devices or the devices matching the pattern, +and will not randomly select other devices in the system. +.It faults +Trap/interrupt rate averages per second over last 5 seconds. +.Pp +.Bl -tag -width indent -compact +.It in +device interrupts per interval (including clock interrupts) +.It sy +system calls per interval +.It cs +cpu context switch rate (switches/interval) +.El +.It cpu +Breakdown of percentage usage of CPU time. +.Pp +.Bl -tag -width indent -compact +.It us +user time for normal and low priority processes +.It sy +system time +.It id +cpu idle +.El +.El +.Sh EXAMPLES +The command: +.Dl vmstat -w 5 +will print what the system is doing every five +seconds; this is a good choice of printing interval since this is how often +some of the statistics are sampled in the system. +Others vary every second and running the output for a while will make it +apparent which are recomputed every second. +.Pp +The command: +.Dl vmstat -p da -p cd -w 1 +will tell vmstat to select the first three direct access or CDROM devices +and display statistics on those devices, as well as other systems +statistics every second. +.Sh FILES +.Bl -tag -width /boot/kernel/kernel -compact +.It Pa /boot/kernel/kernel +default kernel namelist +.It Pa /dev/kmem +default memory file +.El +.Sh SEE ALSO +.Xr fstat 1 , +.Xr netstat 1 , +.Xr nfsstat 1 , +.Xr ps 1 , +.Xr systat 1 , +.Xr iostat 8 , +.Xr pstat 8 , +.Xr sysctl 8 +.Pp +The sections starting with ``Interpreting system activity'' in +.%T "Installing and Operating 4.3BSD" . +.Sh BUGS +The +.Fl c +and +.Fl w +options are only available with the default output. diff --git a/usr.bin/vmstat/vmstat.c b/usr.bin/vmstat/vmstat.c new file mode 100644 index 000000000000..1bea1c5adbed --- /dev/null +++ b/usr.bin/vmstat/vmstat.c @@ -0,0 +1,1039 @@ +/* + * Copyright (c) 1980, 1986, 1991, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static const char copyright[] = +"@(#) Copyright (c) 1980, 1986, 1991, 1993\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#if 0 +#ifndef lint +static char sccsid[] = "@(#)vmstat.c 8.1 (Berkeley) 6/6/93"; +#endif /* not lint */ +#endif + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/time.h> +#include <sys/proc.h> +#include <sys/uio.h> +#include <sys/namei.h> +#include <sys/malloc.h> +#include <sys/signal.h> +#include <sys/fcntl.h> +#include <sys/ioctl.h> +#include <sys/resource.h> +#include <sys/sysctl.h> +#include <sys/vmmeter.h> + +#include <vm/vm_param.h> + +#include <ctype.h> +#include <devstat.h> +#include <err.h> +#include <errno.h> +#include <kvm.h> +#include <limits.h> +#include <nlist.h> +#include <paths.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sysexits.h> +#include <time.h> +#include <unistd.h> + +static char da[] = "da"; + +static struct nlist namelist[] = { +#define X_CPTIME 0 + { "_cp_time" }, +#define X_SUM 1 + { "_cnt" }, +#define X_BOOTTIME 2 + { "_boottime" }, +#define X_HZ 3 + { "_hz" }, +#define X_STATHZ 4 + { "_stathz" }, +#define X_NCHSTATS 5 + { "_nchstats" }, +#define X_INTRNAMES 6 + { "_intrnames" }, +#define X_EINTRNAMES 7 + { "_eintrnames" }, +#define X_INTRCNT 8 + { "_intrcnt" }, +#define X_EINTRCNT 9 + { "_eintrcnt" }, +#define X_KMEMSTATS 10 + { "_kmemstatistics" }, +#define X_KMEMZONES 11 + { "_kmemzones" }, +#ifdef notyet +#define X_DEFICIT XXX + { "_deficit" }, +#define X_REC XXX + { "_rectime" }, +#define X_PGIN XXX + { "_pgintime" }, +#define X_XSTATS XXX + { "_xstats" }, +#define X_END XXX +#else +#define X_END 12 +#endif + { "" }, +}; + +static struct statinfo cur, last; +static int num_devices, maxshowdevs; +static long generation; +static struct device_selection *dev_select; +static int num_selected; +static struct devstat_match *matches; +static int num_matches = 0; +static int num_devices_specified, num_selections; +static long select_generation; +static char **specified_devices; +static devstat_select_mode select_mode; + +static struct vmmeter sum, osum; + +static int winlines = 20; +static int aflag; +static int nflag; + +static kvm_t *kd; + +#define FORKSTAT 0x01 +#define INTRSTAT 0x02 +#define MEMSTAT 0x04 +#define SUMSTAT 0x08 +#define TIMESTAT 0x10 +#define VMSTAT 0x20 +#define ZMEMSTAT 0x40 + +static void cpustats(void); +static void devstats(void); +static void doforkst(void); +static void domem(void); +static void dointr(void); +static void dosum(void); +static void dosysctl(const char *); +static void dovmstat(unsigned int, int); +static void dozmem(void); +static void kread(int, void *, size_t); +static void kreado(int, void *, size_t, size_t); +static char *kgetstr(const char *); +static void needhdr(int); +static void printhdr(void); +static void usage(void); + +static long pct(long, long); +static long getuptime(void); + +static char **getdrivedata(char **); + +int +main(int argc, char *argv[]) +{ + int c, todo; + unsigned int interval; + int reps; + char *memf, *nlistf; + char errbuf[_POSIX2_LINE_MAX]; + + memf = nlistf = NULL; + interval = reps = todo = 0; + maxshowdevs = 2; + while ((c = getopt(argc, argv, "ac:fiM:mN:n:p:stw:z")) != -1) { + switch (c) { + case 'a': + aflag++; + break; + case 'c': + reps = atoi(optarg); + break; + case 'f': + todo |= FORKSTAT; + break; + case 'i': + todo |= INTRSTAT; + break; + case 'M': + memf = optarg; + break; + case 'm': + todo |= MEMSTAT; + break; + case 'N': + nlistf = optarg; + break; + case 'n': + nflag = 1; + maxshowdevs = atoi(optarg); + if (maxshowdevs < 0) + errx(1, "number of devices %d is < 0", + maxshowdevs); + break; + case 'p': + if (devstat_buildmatch(optarg, &matches, &num_matches) != 0) + errx(1, "%s", devstat_errbuf); + break; + case 's': + todo |= SUMSTAT; + break; + case 't': +#ifdef notyet + todo |= TIMESTAT; +#else + errx(EX_USAGE, "sorry, -t is not (re)implemented yet"); +#endif + break; + case 'w': + interval = atoi(optarg); + break; + case 'z': + todo |= ZMEMSTAT; + break; + case '?': + default: + usage(); + } + } + argc -= optind; + argv += optind; + + if (todo == 0) + todo = VMSTAT; + + if (memf != NULL) { + kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); + if (kd == NULL) + errx(1, "kvm_openfiles: %s", errbuf); + } + + if (kd != NULL && (c = kvm_nlist(kd, namelist)) != 0) { + if (c > 0) { + warnx("undefined symbols:"); + for (c = 0; + c < (int)(sizeof(namelist)/sizeof(namelist[0])); + c++) + if (namelist[c].n_type == 0) + (void)fprintf(stderr, " %s", + namelist[c].n_name); + (void)fputc('\n', stderr); + } else + warnx("kvm_nlist: %s", kvm_geterr(kd)); + exit(1); + } + + if (todo & VMSTAT) { + struct winsize winsize; + + /* + * Make sure that the userland devstat version matches the + * kernel devstat version. If not, exit and print a + * message informing the user of his mistake. + */ + if (devstat_checkversion(NULL) < 0) + errx(1, "%s", devstat_errbuf); + + + argv = getdrivedata(argv); + winsize.ws_row = 0; + (void) ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize); + if (winsize.ws_row > 0) + winlines = winsize.ws_row; + + } + +#define BACKWARD_COMPATIBILITY +#ifdef BACKWARD_COMPATIBILITY + if (*argv) { + interval = atoi(*argv); + if (*++argv) + reps = atoi(*argv); + } +#endif + + if (interval) { + if (!reps) + reps = -1; + } else if (reps) + interval = 1; + + if (todo & FORKSTAT) + doforkst(); + if (todo & MEMSTAT) + domem(); + if (todo & ZMEMSTAT) + dozmem(); + if (todo & SUMSTAT) + dosum(); +#ifdef notyet + if (todo & TIMESTAT) + dotimes(); +#endif + if (todo & INTRSTAT) + dointr(); + if (todo & VMSTAT) + dovmstat(interval, reps); + exit(0); +} + +static int +mysysctl(const char *name, void *oldp, size_t *oldlenp, + void *newp, size_t newlen) +{ + int error; + + error = sysctlbyname(name, oldp, oldlenp, newp, newlen); + if (error != 0 && errno != ENOMEM) + err(1, "sysctl(%s)", name); + return (error); +} + +static char ** +getdrivedata(char **argv) +{ + if ((num_devices = devstat_getnumdevs(NULL)) < 0) + errx(1, "%s", devstat_errbuf); + + cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); + last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); + bzero(cur.dinfo, sizeof(struct devinfo)); + bzero(last.dinfo, sizeof(struct devinfo)); + + if (devstat_getdevs(NULL, &cur) == -1) + errx(1, "%s", devstat_errbuf); + + num_devices = cur.dinfo->numdevs; + generation = cur.dinfo->generation; + + specified_devices = (char **)malloc(sizeof(char *)); + for (num_devices_specified = 0; *argv; ++argv) { + if (isdigit(**argv)) + break; + num_devices_specified++; + specified_devices = (char **)realloc(specified_devices, + sizeof(char *) * + num_devices_specified); + specified_devices[num_devices_specified - 1] = *argv; + } + dev_select = NULL; + + if (nflag == 0 && maxshowdevs < num_devices_specified) + maxshowdevs = num_devices_specified; + + /* + * People are generally only interested in disk statistics when + * they're running vmstat. So, that's what we're going to give + * them if they don't specify anything by default. We'll also give + * them any other random devices in the system so that we get to + * maxshowdevs devices, if that many devices exist. If the user + * specifies devices on the command line, either through a pattern + * match or by naming them explicitly, we will give the user only + * those devices. + */ + if ((num_devices_specified == 0) && (num_matches == 0)) { + if (devstat_buildmatch(da, &matches, &num_matches) != 0) + errx(1, "%s", devstat_errbuf); + + select_mode = DS_SELECT_ADD; + } else + select_mode = DS_SELECT_ONLY; + + /* + * At this point, selectdevs will almost surely indicate that the + * device list has changed, so we don't look for return values of 0 + * or 1. If we get back -1, though, there is an error. + */ + if (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) == -1) + errx(1, "%s", devstat_errbuf); + + return(argv); +} + +static long +getuptime(void) +{ + static struct timeval boottime; + static time_t now; + time_t uptime; + + if (boottime.tv_sec == 0) { + if (kd != NULL) { + kread(X_BOOTTIME, &boottime, sizeof(boottime)); + } else { + size_t size; + + size = sizeof(boottime); + mysysctl("kern.boottime", &boottime, &size, NULL, 0); + if (size != sizeof(boottime)) + errx(1, "kern.boottime size mismatch"); + } + } + (void)time(&now); + uptime = now - boottime.tv_sec; + if (uptime <= 0 || uptime > 60*60*24*365*10) + errx(1, "time makes no sense; namelist must be wrong"); + return(uptime); +} + +static void +fill_vmmeter(struct vmmeter *vmmp) +{ + if (kd != NULL) { + kread(X_SUM, vmmp, sizeof(*vmmp)); + } else { + size_t size = sizeof(unsigned int); +#define GET_VM_STATS(cat, name) \ + mysysctl("vm.stats." #cat "." #name, &vmmp->name, &size, NULL, 0) + /* sys */ + GET_VM_STATS(sys, v_swtch); + GET_VM_STATS(sys, v_trap); + GET_VM_STATS(sys, v_syscall); + GET_VM_STATS(sys, v_intr); + GET_VM_STATS(sys, v_soft); + + /* vm */ + GET_VM_STATS(vm, v_vm_faults); + GET_VM_STATS(vm, v_cow_faults); + GET_VM_STATS(vm, v_cow_optim); + GET_VM_STATS(vm, v_zfod); + GET_VM_STATS(vm, v_ozfod); + GET_VM_STATS(vm, v_swapin); + GET_VM_STATS(vm, v_swapout); + GET_VM_STATS(vm, v_swappgsin); + GET_VM_STATS(vm, v_swappgsout); + 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_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"); + } +} + +static int hz, hdrcnt; + +static void +dovmstat(unsigned int interval, int reps) +{ + struct vmtotal total; + time_t uptime, halfuptime; + struct devinfo *tmp_dinfo; + size_t size; + + uptime = getuptime(); + halfuptime = uptime / 2; + (void)signal(SIGCONT, needhdr); + + 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; + } + + for (hdrcnt = 1;;) { + if (!--hdrcnt) + printhdr(); + if (kd != NULL) { + kread(X_CPTIME, cur.cp_time, sizeof(cur.cp_time)); + } 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"); + } + + 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(); + 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) + halfuptime) / uptime) /* round */ + (void)printf(" %7ld %6ld ", (long)vmstat_pgtok(total.t_avm), + (long)vmstat_pgtok(total.t_free)); + (void)printf("%4lu ", + (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("%3lu ", + (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 %3lu ", + (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)); + cpustats(); + (void)printf("\n"); + (void)fflush(stdout); + if (reps >= 0 && --reps <= 0) + break; + osum = sum; + uptime = interval; + /* + * We round upward to avoid losing low-frequency events + * (i.e., >= 1 per interval but < 1 per second). + */ + if (interval != 1) + halfuptime = (uptime + 1) / 2; + else + halfuptime = 0; + (void)sleep(interval); + } +} + +static void +printhdr(void) +{ + 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 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 us sy id\n"); + hdrcnt = winlines - 2; +} + +/* + * Force a header to be prepended to the next output. + */ +static void +needhdr(int dummy __unused) +{ + + hdrcnt = 1; +} + +#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 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 +cpustats(void) +{ + int state; + 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; + (void)printf("%2.0f ", (cur.cp_time[CP_USER] + + cur.cp_time[CP_NICE]) * lpct); + (void)printf("%2.0f ", (cur.cp_time[CP_SYS] + + cur.cp_time[CP_INTR]) * lpct); + (void)printf("%2.0f", cur.cp_time[CP_IDLE] * lpct); +} + +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) { + intrcntlen = namelist[X_EINTRCNT].n_value - + namelist[X_INTRCNT].n_value; + inamlen = namelist[X_EINTRNAMES].n_value - + namelist[X_INTRNAMES].n_value; + 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", 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", istrnamlen, intrname, + *intrcnt, *intrcnt / uptime); + intrname += strlen(intrname) + 1; + inttotal += *intrcnt++; + } + (void)printf("%-*s %20llu %10llu\n", istrnamlen, "Total", + (long long)inttotal, (long long)(inttotal / uptime)); +} + +static void +domem(void) +{ + struct malloc_type type; + + if (kd == NULL) { + dosysctl("kern.malloc"); + return; + } + kread(X_KMEMSTATS, &type.ks_next, sizeof(type.ks_next)); + (void)printf("\n Type InUse MemUse HighUse Requests" + " Size(s)\n"); + do { + /* XXX this should be exported in sys/malloc.h */ + struct { + int kz_size; + char *kz_name; + /* uma_zone_t */ void *kz_zone; + } kz; + size_t kmemzonenum; + char *str; + int first; + + if (kvm_read(kd, (u_long)type.ks_next, &type, sizeof(type)) != + sizeof(type)) + errx(1, "%s: %p: %s", __func__, type.ks_next, + kvm_geterr(kd)); + if (type.ks_calls == 0) + continue; + str = kgetstr(type.ks_shortdesc); + (void)printf("%13s%6lu%6luK%7luK%9llu", + str, + type.ks_inuse, + (type.ks_memuse + 1023) / 1024, + (type.ks_maxused + 1023) / 1024, + (long long unsigned)type.ks_calls); + free(str); + for (kmemzonenum = 0, first = 1; ; kmemzonenum++) { + kreado(X_KMEMZONES, &kz, sizeof(kz), + kmemzonenum * sizeof(kz)); + if (kz.kz_name == NULL) { + (void)printf("\n"); + break; + } + if (!(type.ks_size & (1 << kmemzonenum))) + continue; + if (first) + (void)printf(" "); + else + (void)printf(","); + first = 0; + str = kgetstr(kz.kz_name); + (void)printf("%s", str); + free(str); + } + } while (type.ks_next != NULL); +} + +static void +dozmem(void) +{ + if (kd != NULL) + errx(1, "not implemented"); + dosysctl("vm.zone"); +} + +static void +dosysctl(const char *name) +{ + char *buf; + size_t bufsize; + + for (buf = NULL, bufsize = 1024; ; bufsize *= 2) { + if ((buf = realloc(buf, bufsize)) == NULL) + err(1, "realloc()"); + bufsize--; /* Leave space for the kern.malloc fixup. */ + if (mysysctl(name, buf, &bufsize, NULL, 0) == 0) + break; + } + buf[bufsize] = '\0'; /* Fix up kern.malloc not returning a string. */ + (void)printf("%s", buf); + free(buf); +} + +/* + * 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 [-aimsz] [-c count] [-M core [-N system]] [-w wait]\n", + " [-n devs] [disks]\n"); + exit(1); +} |