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freebsd-dev/usr.bin/vmstat/vmstat.c
Elliott Mitchell e5c30ac930 vmstat: fix overflow of interrupt name buffer 
sysctl() provides a count of number of bytes in the buffer.  That is the
actual buffer length.  Whereas looking for an interrupt entry with an
empty name could terminate too early, or overflow the end of the buffer.
The overflow will occur if the table of interrupt names is full.

Reviewed by:	kib
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D36628
2023-01-20 04:51:13 +02:00

1684 lines
44 KiB
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/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* 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. 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/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/time.h>
#include <sys/user.h>
#define _WANT_VMMETER
#include <sys/vmmeter.h>
#include <sys/pcpu.h>
#include <vm/vm_param.h>
#include <ctype.h>
#include <devstat.h>
#include <err.h>
#include <errno.h>
#include <inttypes.h>
#include <kvm.h>
#include <limits.h>
#include <memstat.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>
#include <libutil.h>
#include <libxo/xo.h>
#define VMSTAT_XO_VERSION "1"
static char da[] = "da";
enum x_stats { X_SUM, X_HZ, X_STATHZ, X_NCHSTATS, X_INTRNAMES, X_SINTRNAMES,
X_INTRCNT, X_SINTRCNT, X_NINTRCNT };
static struct nlist namelist[] = {
[X_SUM] = { .n_name = "_vm_cnt", },
[X_HZ] = { .n_name = "_hz", },
[X_STATHZ] = { .n_name = "_stathz", },
[X_NCHSTATS] = { .n_name = "_nchstats", },
[X_INTRNAMES] = { .n_name = "_intrnames", },
[X_SINTRNAMES] = { .n_name = "_sintrnames", },
[X_INTRCNT] = { .n_name = "_intrcnt", },
[X_SINTRCNT] = { .n_name = "_sintrcnt", },
[X_NINTRCNT] = { .n_name = "_nintrcnt", },
{ .n_name = NULL, },
};
static struct devstat_match *matches;
static struct device_selection *dev_select;
static struct statinfo cur, last;
static devstat_select_mode select_mode;
static size_t size_cp_times;
static long *cur_cp_times, *last_cp_times;
static long generation, select_generation;
static int hz, hdrcnt, maxshowdevs;
static int num_devices, num_devices_specified;
static int num_matches, num_selected, num_selections;
static char **specified_devices;
static struct __vmmeter {
uint64_t v_swtch;
uint64_t v_trap;
uint64_t v_syscall;
uint64_t v_intr;
uint64_t v_soft;
uint64_t v_vm_faults;
uint64_t v_io_faults;
uint64_t v_cow_faults;
uint64_t v_cow_optim;
uint64_t v_zfod;
uint64_t v_ozfod;
uint64_t v_swapin;
uint64_t v_swapout;
uint64_t v_swappgsin;
uint64_t v_swappgsout;
uint64_t v_vnodein;
uint64_t v_vnodeout;
uint64_t v_vnodepgsin;
uint64_t v_vnodepgsout;
uint64_t v_intrans;
uint64_t v_reactivated;
uint64_t v_pdwakeups;
uint64_t v_pdpages;
uint64_t v_pdshortfalls;
uint64_t v_dfree;
uint64_t v_pfree;
uint64_t v_tfree;
uint64_t v_forks;
uint64_t v_vforks;
uint64_t v_rforks;
uint64_t v_kthreads;
uint64_t v_forkpages;
uint64_t v_vforkpages;
uint64_t v_rforkpages;
uint64_t v_kthreadpages;
u_int v_page_size;
u_int v_page_count;
u_int v_free_reserved;
u_int v_free_target;
u_int v_free_min;
u_int v_free_count;
u_int v_wire_count;
u_long v_user_wire_count;
u_int v_active_count;
u_int v_inactive_target;
u_int v_inactive_count;
u_int v_laundry_count;
u_int v_pageout_free_min;
u_int v_interrupt_free_min;
u_int v_free_severe;
} sum, osum;
#define VMSTAT_DEFAULT_LINES 20 /* Default number of `winlines'. */
static volatile sig_atomic_t wresized; /* Tty resized when non-zero. */
static int winlines = VMSTAT_DEFAULT_LINES; /* Current number of tty rows. */
static int aflag;
static int nflag;
static int Pflag;
static int hflag;
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
#define OBJSTAT 0x80
static void cpustats(void);
static void pcpustats(u_long, int);
static void devstats(void);
static void doforkst(void);
static void dointr(unsigned int, int);
static void doobjstat(void);
static void dosum(void);
static void dovmstat(unsigned int, int);
static void domemstat_malloc(void);
static void domemstat_zone(void);
static void kread(int, void *, size_t);
static void kreado(int, void *, size_t, size_t);
static void kreadptr(uintptr_t, void *, size_t);
static void needhdr(int);
static void needresize(int);
static void doresize(void);
static void printhdr(int, u_long);
static void usage(void);
static long pct(long, long);
static long long getuptime(void);
static char **getdrivedata(char **);
int
main(int argc, char *argv[])
{
char *bp, *buf, *memf, *nlistf;
float f;
int bufsize, c, reps, todo;
size_t len;
unsigned int interval;
char errbuf[_POSIX2_LINE_MAX];
memf = nlistf = NULL;
interval = reps = todo = 0;
maxshowdevs = 2;
hflag = isatty(1);
argc = xo_parse_args(argc, argv);
if (argc < 0)
return (argc);
while ((c = getopt(argc, argv, "ac:fhHiM:mN:n:oPp:sw:z")) != -1) {
switch (c) {
case 'a':
aflag++;
break;
case 'c':
reps = atoi(optarg);
break;
case 'P':
Pflag++;
break;
case 'f':
todo |= FORKSTAT;
break;
case 'h':
hflag = 1;
break;
case 'H':
hflag = 0;
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)
xo_errx(1, "number of devices %d is < 0",
maxshowdevs);
break;
case 'o':
todo |= OBJSTAT;
break;
case 'p':
if (devstat_buildmatch(optarg, &matches, &num_matches)
!= 0)
xo_errx(1, "%s", devstat_errbuf);
break;
case 's':
todo |= SUMSTAT;
break;
case 'w':
/* Convert to milliseconds. */
f = atof(optarg);
interval = f * 1000;
break;
case 'z':
todo |= ZMEMSTAT;
break;
case '?':
default:
usage();
}
}
argc -= optind;
argv += optind;
xo_set_version(VMSTAT_XO_VERSION);
if (todo == 0)
todo = VMSTAT;
if (memf != NULL) {
kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
if (kd == NULL)
xo_errx(1, "kvm_openfiles: %s", errbuf);
}
retry_nlist:
if (kd != NULL && (c = kvm_nlist(kd, namelist)) != 0) {
if (c > 0) {
bufsize = 0;
len = 0;
/*
* 'cnt' was renamed to 'vm_cnt'. If 'vm_cnt' is not
* found try looking up older 'cnt' symbol.
* */
if (namelist[X_SUM].n_type == 0 &&
strcmp(namelist[X_SUM].n_name, "_vm_cnt") == 0) {
namelist[X_SUM].n_name = "_cnt";
goto retry_nlist;
}
/*
* 'nintrcnt' doesn't exist in older kernels, but
* that isn't fatal.
*/
if (namelist[X_NINTRCNT].n_type == 0 && c == 1)
goto nlist_ok;
for (c = 0; c < (int)(nitems(namelist)); c++)
if (namelist[c].n_type == 0)
bufsize += strlen(namelist[c].n_name)
+ 1;
bufsize += len + 1;
buf = bp = alloca(bufsize);
for (c = 0; c < (int)(nitems(namelist)); c++)
if (namelist[c].n_type == 0) {
xo_error(" %s",
namelist[c].n_name);
len = strlen(namelist[c].n_name);
*bp++ = ' ';
memcpy(bp, namelist[c].n_name, len);
bp += len;
}
*bp = '\0';
xo_error("undefined symbols:\n", buf);
} else
xo_warnx("kvm_nlist: %s", kvm_geterr(kd));
xo_finish();
exit(1);
}
nlist_ok:
if (kd && Pflag)
xo_errx(1, "Cannot use -P with crash dumps");
if (todo & VMSTAT) {
/*
* 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)
xo_errx(1, "%s", devstat_errbuf);
argv = getdrivedata(argv);
}
if (*argv) {
f = atof(*argv);
interval = f * 1000;
if (*++argv)
reps = atoi(*argv);
}
if (interval) {
if (!reps)
reps = -1;
} else if (reps)
interval = 1 * 1000;
if (todo & FORKSTAT)
doforkst();
if (todo & MEMSTAT)
domemstat_malloc();
if (todo & ZMEMSTAT)
domemstat_zone();
if (todo & SUMSTAT)
dosum();
if (todo & OBJSTAT)
doobjstat();
if (todo & INTRSTAT)
dointr(interval, reps);
if (todo & VMSTAT)
dovmstat(interval, reps);
xo_finish();
exit(0);
}
static int
mysysctl(const char *name, void *oldp, size_t *oldlenp)
{
int error;
error = sysctlbyname(name, oldp, oldlenp, NULL, 0);
if (error != 0 && errno != ENOMEM)
xo_err(1, "sysctl(%s)", name);
return (error);
}
static char **
getdrivedata(char **argv)
{
if ((num_devices = devstat_getnumdevs(NULL)) < 0)
xo_errx(1, "%s", devstat_errbuf);
cur.dinfo = (struct devinfo *)calloc(1, sizeof(struct devinfo));
last.dinfo = (struct devinfo *)calloc(1, sizeof(struct devinfo));
if (devstat_getdevs(NULL, &cur) == -1)
xo_errx(1, "%s", devstat_errbuf);
num_devices = cur.dinfo->numdevs;
generation = cur.dinfo->generation;
specified_devices = malloc(sizeof(char *));
for (num_devices_specified = 0; *argv; ++argv) {
if (isdigit(**argv))
break;
num_devices_specified++;
specified_devices = reallocf(specified_devices,
sizeof(char *) * num_devices_specified);
if (specified_devices == NULL) {
xo_errx(1, "%s", "reallocf (specified_devices)");
}
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)
xo_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)
xo_errx(1, "%s", devstat_errbuf);
return(argv);
}
/* Return system uptime in nanoseconds */
static long long
getuptime(void)
{
struct timespec sp;
(void)clock_gettime(CLOCK_UPTIME, &sp);
return((long long)sp.tv_sec * 1000000000LL + sp.tv_nsec);
}
static void
fill_vmmeter(struct __vmmeter *vmmp)
{
struct vmmeter vm_cnt;
size_t size;
if (kd != NULL) {
kread(X_SUM, &vm_cnt, sizeof(vm_cnt));
#define GET_COUNTER(name) \
vmmp->name = kvm_counter_u64_fetch(kd, (u_long)vm_cnt.name)
GET_COUNTER(v_swtch);
GET_COUNTER(v_trap);
GET_COUNTER(v_syscall);
GET_COUNTER(v_intr);
GET_COUNTER(v_soft);
GET_COUNTER(v_vm_faults);
GET_COUNTER(v_io_faults);
GET_COUNTER(v_cow_faults);
GET_COUNTER(v_cow_optim);
GET_COUNTER(v_zfod);
GET_COUNTER(v_ozfod);
GET_COUNTER(v_swapin);
GET_COUNTER(v_swapout);
GET_COUNTER(v_swappgsin);
GET_COUNTER(v_swappgsout);
GET_COUNTER(v_vnodein);
GET_COUNTER(v_vnodeout);
GET_COUNTER(v_vnodepgsin);
GET_COUNTER(v_vnodepgsout);
GET_COUNTER(v_intrans);
GET_COUNTER(v_tfree);
GET_COUNTER(v_forks);
GET_COUNTER(v_vforks);
GET_COUNTER(v_rforks);
GET_COUNTER(v_kthreads);
GET_COUNTER(v_forkpages);
GET_COUNTER(v_vforkpages);
GET_COUNTER(v_rforkpages);
GET_COUNTER(v_kthreadpages);
#undef GET_COUNTER
} else {
#define GET_VM_STATS(cat, name) do { \
size = sizeof(vmmp->name); \
mysysctl("vm.stats." #cat "." #name, &vmmp->name, &size); \
} while (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_io_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_pdshortfalls);
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_user_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_laundry_count);
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)
{
size_t size;
if (kd != NULL) {
/* XXX fill vmtp */
xo_errx(1, "not implemented");
} else {
size = sizeof(*vmtp);
mysysctl("vm.vmtotal", vmtp, &size);
if (size != sizeof(*vmtp))
xo_errx(1, "vm.total size mismatch");
}
}
/* Determine how many cpu columns, and what index they are in kern.cp_times */
static void
getcpuinfo(u_long *maskp, int *maxidp)
{
long *times;
u_long mask;
size_t size;
int empty, i, j, maxcpu, maxid;
if (kd != NULL)
xo_errx(1, "not implemented");
mask = 0;
size = sizeof(maxcpu);
mysysctl("kern.smp.maxcpus", &maxcpu, &size);
if (size != sizeof(maxcpu))
xo_errx(1, "sysctl kern.smp.maxcpus");
size = sizeof(long) * maxcpu * CPUSTATES;
times = malloc(size);
if (times == NULL)
xo_err(1, "malloc %zd bytes", size);
mysysctl("kern.cp_times", times, &size);
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);
}
if (maskp)
*maskp = mask;
if (maxidp)
*maxidp = maxid;
}
static void
prthuman(const char *name, uint64_t val, int size, int flags)
{
char buf[10];
char fmt[128];
snprintf(fmt, sizeof(fmt), "{:%s/%%*s}", name);
if (size < 5 || size > 9)
xo_errx(1, "doofus");
flags |= HN_NOSPACE | HN_DECIMAL;
humanize_number(buf, size, val, "", HN_AUTOSCALE, flags);
xo_attr("value", "%ju", (uintmax_t) val);
xo_emit(fmt, size, buf);
}
static void
dovmstat(unsigned int interval, int reps)
{
struct clockinfo clockrate;
struct vmtotal total;
struct devinfo *tmp_dinfo;
u_long cpumask;
size_t size;
time_t uptime, halfuptime;
int maxid, rate_adj, retval;
uptime = getuptime() / 1000000000LL;
halfuptime = uptime / 2;
rate_adj = 1;
maxid = 0;
cpumask = 0;
/*
* 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 {
size = sizeof(clockrate);
mysysctl("kern.clockrate", &clockrate, &size);
if (size != sizeof(clockrate))
xo_errx(1, "clockrate size mismatch");
hz = clockrate.hz;
}
if (Pflag) {
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(maxid, cpumask);
if (kd != NULL) {
if (kvm_getcptime(kd, cur.cp_time) < 0)
xo_errx(1, "kvm_getcptime: %s", kvm_geterr(kd));
} else {
size = sizeof(cur.cp_time);
mysysctl("kern.cp_time", &cur.cp_time, &size);
if (size != sizeof(cur.cp_time))
xo_errx(1, "cp_time size mismatch");
}
if (Pflag) {
size = size_cp_times;
mysysctl("kern.cp_times", cur_cp_times, &size);
if (size != size_cp_times)
xo_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:
xo_errx(1, "%s", devstat_errbuf);
break;
case 1:
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:
xo_errx(1, "%s", devstat_errbuf);
break;
case 1:
printhdr(maxid, cpumask);
break;
default:
break;
}
break;
default:
break;
}
fill_vmmeter(&sum);
fill_vmtotal(&total);
xo_open_container("processes");
xo_emit("{:runnable/%2d} {:waiting/%2ld} "
"{:swapped-out/%2ld}", total.t_rq - 1, total.t_dw +
total.t_pw, total.t_sw);
xo_close_container("processes");
xo_open_container("memory");
#define vmstat_pgtok(a) ((uintmax_t)(a) * (sum.v_page_size >> 10))
#define rate(x) (unsigned long)(((x) * rate_adj + halfuptime) / uptime)
if (hflag) {
prthuman("available-memory",
total.t_avm * (uint64_t)sum.v_page_size, 5, HN_B);
prthuman("free-memory",
total.t_free * (uint64_t)sum.v_page_size, 5, HN_B);
prthuman("total-page-faults",
rate(sum.v_vm_faults - osum.v_vm_faults), 5, 0);
xo_emit(" ");
} else {
xo_emit(" ");
xo_emit("{:available-memory/%7ju}",
vmstat_pgtok(total.t_avm));
xo_emit(" ");
xo_emit("{:free-memory/%7ju}",
vmstat_pgtok(total.t_free));
xo_emit(" ");
xo_emit("{:total-page-faults/%5lu} ",
rate(sum.v_vm_faults - osum.v_vm_faults));
}
xo_close_container("memory");
xo_open_container("paging-rates");
xo_emit("{:page-reactivated/%3lu} ",
rate(sum.v_reactivated - osum.v_reactivated));
xo_emit("{:paged-in/%3lu} ",
rate(sum.v_swapin + sum.v_vnodein -
(osum.v_swapin + osum.v_vnodein)));
xo_emit("{:paged-out/%3lu}",
rate(sum.v_swapout + sum.v_vnodeout -
(osum.v_swapout + osum.v_vnodeout)));
if (hflag) {
prthuman("freed",
rate(sum.v_tfree - osum.v_tfree), 5, 0);
prthuman("scanned",
rate(sum.v_pdpages - osum.v_pdpages), 5, 0);
xo_emit(" ");
} else {
xo_emit(" ");
xo_emit("{:freed/%5lu} ",
rate(sum.v_tfree - osum.v_tfree));
xo_emit("{:scanned/%4lu} ",
rate(sum.v_pdpages - osum.v_pdpages));
}
xo_close_container("paging-rates");
devstats();
xo_open_container("fault-rates");
xo_emit("{:interrupts/%4lu}", rate(sum.v_intr - osum.v_intr));
if (hflag) {
prthuman("system-calls",
rate(sum.v_syscall - osum.v_syscall), 5, 0);
prthuman("context-switches",
rate(sum.v_swtch - osum.v_swtch), 5, 0);
} else {
xo_emit(" ");
xo_emit("{:system-calls/%5lu} "
"{:context-switches/%5lu}",
rate(sum.v_syscall - osum.v_syscall),
rate(sum.v_swtch - osum.v_swtch));
}
xo_close_container("fault-rates");
if (Pflag)
pcpustats(cpumask, maxid);
else
cpustats();
xo_emit("\n");
xo_flush();
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 maxid, u_long cpumask)
{
int i, num_shown;
num_shown = MIN(num_selected, maxshowdevs);
if (hflag)
xo_emit(" {T:procs} {T:memory} {T:/page%*s}", 19, "");
else
xo_emit("{T:procs} {T:memory} {T:/page%*s}", 19, "");
if (num_shown > 1)
xo_emit(" {T:/disks %*s} ", num_shown * 4 - 7, "");
else if (num_shown == 1)
xo_emit(" {T:disks}");
xo_emit(" {T:faults} ");
if (Pflag) {
for (i = 0; i <= maxid; i++) {
if (cpumask & (1ul << i))
xo_emit(" {T:/cpu%d} ", i);
}
xo_emit("\n");
} else
xo_emit(" {T:cpu}\n");
if (hflag) {
xo_emit(" {T:r} {T:b} {T:w} {T:avm} {T:fre} {T:flt} {T:re}"
" {T:pi} {T:po} {T:fr} {T:sr} ");
} else {
xo_emit("{T:r} {T:b} {T:w} {T:avm} {T:fre} {T:flt} "
"{T:re} {T:pi} {T:po} {T:fr} {T:sr} ");
}
for (i = 0; i < num_devices; i++)
if ((dev_select[i].selected) &&
(dev_select[i].selected <= maxshowdevs))
xo_emit("{T:/%c%c%d} ", dev_select[i].device_name[0],
dev_select[i].device_name[1],
dev_select[i].unit_number);
xo_emit(" {T:in} {T:sy} {T:cs}");
if (Pflag) {
for (i = 0; i <= maxid; i++) {
if (cpumask & (1ul << i))
xo_emit(" {T:us} {T:sy} {T:id}");
}
xo_emit("\n");
} else
xo_emit(" {T:us} {T:sy} {T: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 __unused)
{
wresized = 1;
hdrcnt = 1;
}
/*
* Update the global `winlines' count of terminal rows.
*/
void
doresize(void)
{
struct winsize w;
int status;
for (;;) {
status = ioctl(fileno(stdout), TIOCGWINSZ, &w);
if (status == -1 && errno == EINTR)
continue;
else if (status == -1)
xo_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;
}
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;
size_t size;
long nchtotal;
fill_vmmeter(&sum);
xo_open_container("summary-statistics");
xo_emit("{:context-switches/%9u} {N:cpu context switches}\n",
sum.v_swtch);
xo_emit("{:interrupts/%9u} {N:device interrupts}\n",
sum.v_intr);
xo_emit("{:software-interrupts/%9u} {N:software interrupts}\n",
sum.v_soft);
xo_emit("{:traps/%9u} {N:traps}\n", sum.v_trap);
xo_emit("{:system-calls/%9u} {N:system calls}\n",
sum.v_syscall);
xo_emit("{:kernel-threads/%9u} {N:kernel threads created}\n",
sum.v_kthreads);
xo_emit("{:forks/%9u} {N: fork() calls}\n", sum.v_forks);
xo_emit("{:vforks/%9u} {N:vfork() calls}\n",
sum.v_vforks);
xo_emit("{:rforks/%9u} {N:rfork() calls}\n",
sum.v_rforks);
xo_emit("{:swap-ins/%9u} {N:swap pager pageins}\n",
sum.v_swapin);
xo_emit("{:swap-in-pages/%9u} {N:swap pager pages paged in}\n",
sum.v_swappgsin);
xo_emit("{:swap-outs/%9u} {N:swap pager pageouts}\n",
sum.v_swapout);
xo_emit("{:swap-out-pages/%9u} {N:swap pager pages paged out}\n",
sum.v_swappgsout);
xo_emit("{:vnode-page-ins/%9u} {N:vnode pager pageins}\n",
sum.v_vnodein);
xo_emit("{:vnode-page-in-pages/%9u} {N:vnode pager pages paged in}\n",
sum.v_vnodepgsin);
xo_emit("{:vnode-page-outs/%9u} {N:vnode pager pageouts}\n",
sum.v_vnodeout);
xo_emit("{:vnode-page-out-pages/%9u} {N:vnode pager pages paged out}\n",
sum.v_vnodepgsout);
xo_emit("{:page-daemon-wakeups/%9u} {N:page daemon wakeups}\n",
sum.v_pdwakeups);
xo_emit("{:page-daemon-pages/%9u} {N:pages examined by the page "
"daemon}\n", sum.v_pdpages);
xo_emit("{:page-reclamation-shortfalls/%9u} {N:clean page reclamation "
"shortfalls}\n", sum.v_pdshortfalls);
xo_emit("{:reactivated/%9u} {N:pages reactivated by the page daemon}\n",
sum.v_reactivated);
xo_emit("{:copy-on-write-faults/%9u} {N:copy-on-write faults}\n",
sum.v_cow_faults);
xo_emit("{:copy-on-write-optimized-faults/%9u} {N:copy-on-write "
"optimized faults}\n", sum.v_cow_optim);
xo_emit("{:zero-fill-pages/%9u} {N:zero fill pages zeroed}\n",
sum.v_zfod);
xo_emit("{:zero-fill-prezeroed/%9u} {N:zero fill pages prezeroed}\n",
sum.v_ozfod);
xo_emit("{:intransit-blocking/%9u} {N:intransit blocking page faults}\n",
sum.v_intrans);
xo_emit("{:total-faults/%9u} {N:total VM faults taken}\n",
sum.v_vm_faults);
xo_emit("{:faults-requiring-io/%9u} {N:page faults requiring I\\/O}\n",
sum.v_io_faults);
xo_emit("{:faults-from-thread-creation/%9u} {N:pages affected by "
"kernel thread creation}\n", sum.v_kthreadpages);
xo_emit("{:faults-from-fork/%9u} {N:pages affected by fork}()\n",
sum.v_forkpages);
xo_emit("{:faults-from-vfork/%9u} {N:pages affected by vfork}()\n",
sum.v_vforkpages);
xo_emit("{:pages-rfork/%9u} {N:pages affected by rfork}()\n",
sum.v_rforkpages);
xo_emit("{:pages-freed/%9u} {N:pages freed}\n",
sum.v_tfree);
xo_emit("{:pages-freed-by-daemon/%9u} {N:pages freed by daemon}\n",
sum.v_dfree);
xo_emit("{:pages-freed-on-exit/%9u} {N:pages freed by exiting processes}\n",
sum.v_pfree);
xo_emit("{:active-pages/%9u} {N:pages active}\n",
sum.v_active_count);
xo_emit("{:inactive-pages/%9u} {N:pages inactive}\n",
sum.v_inactive_count);
xo_emit("{:laundry-pages/%9u} {N:pages in the laundry queue}\n",
sum.v_laundry_count);
xo_emit("{:wired-pages/%9u} {N:pages wired down}\n",
sum.v_wire_count);
xo_emit("{:virtual-user-wired-pages/%9lu} {N:virtual user pages wired "
"down}\n", sum.v_user_wire_count);
xo_emit("{:free-pages/%9u} {N:pages free}\n",
sum.v_free_count);
xo_emit("{:bytes-per-page/%9u} {N:bytes per page}\n", sum.v_page_size);
if (kd != NULL) {
kread(X_NCHSTATS, &lnchstats, sizeof(lnchstats));
} else {
size = sizeof(lnchstats);
mysysctl("vfs.cache.nchstats", &lnchstats, &size);
if (size != sizeof(lnchstats))
xo_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;
xo_emit("{:total-name-lookups/%9ld} {N:total name lookups}\n",
nchtotal);
xo_emit("{P:/%9s} {N:cache hits} "
"({:positive-cache-hits/%ld}% pos + "
"{:negative-cache-hits/%ld}% {N:neg}) "
"system {:cache-hit-percent/%ld}% per-directory\n",
"", PCT(lnchstats.ncs_goodhits, nchtotal),
PCT(lnchstats.ncs_neghits, nchtotal),
PCT(lnchstats.ncs_pass2, nchtotal));
xo_emit("{P:/%9s} {L:deletions} {:deletions/%ld}%, "
"{L:falsehits} {:false-hits/%ld}%, "
"{L:toolong} {:too-long/%ld}%\n", "",
PCT(lnchstats.ncs_badhits, nchtotal),
PCT(lnchstats.ncs_falsehits, nchtotal),
PCT(lnchstats.ncs_long, nchtotal));
xo_close_container("summary-statistics");
}
static void
doforkst(void)
{
fill_vmmeter(&sum);
xo_open_container("fork-statistics");
xo_emit("{:fork/%u} {N:forks}, {:fork-pages/%u} {N:pages}, "
"{L:average} {:fork-average/%.2f}\n",
sum.v_forks, sum.v_forkpages,
sum.v_forks == 0 ? 0.0 :
(double)sum.v_forkpages / sum.v_forks);
xo_emit("{:vfork/%u} {N:vforks}, {:vfork-pages/%u} {N:pages}, "
"{L:average} {:vfork-average/%.2f}\n",
sum.v_vforks, sum.v_vforkpages,
sum.v_vforks == 0 ? 0.0 :
(double)sum.v_vforkpages / sum.v_vforks);
xo_emit("{:rfork/%u} {N:rforks}, {:rfork-pages/%u} {N:pages}, "
"{L:average} {:rfork-average/%.2f}\n",
sum.v_rforks, sum.v_rforkpages,
sum.v_rforks == 0 ? 0.0 :
(double)sum.v_rforkpages / sum.v_rforks);
xo_close_container("fork-statistics");
}
static void
devstats(void)
{
long double busy_seconds, transfers_per_second;
long tmp;
int di, dn, state;
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;
xo_open_list("device");
for (dn = 0; dn < num_devices; dn++) {
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)
xo_errx(1, "%s", devstat_errbuf);
xo_open_instance("device");
xo_emit("{ekq:name/%c%c%d}{:transfers/%3.0Lf} ",
dev_select[dn].device_name[0],
dev_select[dn].device_name[1],
dev_select[dn].unit_number,
transfers_per_second);
xo_close_instance("device");
}
xo_close_list("device");
}
static void
percent(const char *name, double pctv, int *over)
{
int l;
char buf[10];
char fmt[128];
snprintf(fmt, sizeof(fmt), " {:%s/%%*s}", name);
l = snprintf(buf, sizeof(buf), "%.0f", pctv);
if (l == 1 && *over) {
xo_emit(fmt, 1, buf);
(*over)--;
} else
xo_emit(fmt, 2, buf);
if (l > 2)
(*over)++;
}
static void
cpustats(void)
{
double lpct, total;
int state, over;
total = 0;
for (state = 0; state < CPUSTATES; ++state)
total += cur.cp_time[state];
if (total > 0)
lpct = 100.0 / total;
else
lpct = 0.0;
over = 0;
xo_open_container("cpu-statistics");
percent("user", (cur.cp_time[CP_USER] + cur.cp_time[CP_NICE]) * lpct,
&over);
percent("system", (cur.cp_time[CP_SYS] + cur.cp_time[CP_INTR]) * lpct,
&over);
percent("idle", cur.cp_time[CP_IDLE] * lpct, &over);
xo_close_container("cpu-statistics");
}
static void
pcpustats(u_long cpumask, int maxid)
{
double lpct, total;
long tmp;
int i, over, state;
/* 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;
xo_open_list("cpu");
for (i = 0; i <= maxid; i++) {
if ((cpumask & (1ul << i)) == 0)
continue;
xo_open_instance("cpu");
xo_emit("{ke:name/%d}", i);
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;
percent("user", (cur_cp_times[i * CPUSTATES + CP_USER] +
cur_cp_times[i * CPUSTATES + CP_NICE]) * lpct, &over);
percent("system", (cur_cp_times[i * CPUSTATES + CP_SYS] +
cur_cp_times[i * CPUSTATES + CP_INTR]) * lpct, &over);
percent("idle", cur_cp_times[i * CPUSTATES + CP_IDLE] * lpct,
&over);
xo_close_instance("cpu");
}
xo_close_list("cpu");
}
static unsigned int
read_intrcnts(unsigned long **intrcnts)
{
size_t intrcntlen;
uintptr_t kaddr;
if (kd != NULL) {
kread(X_SINTRCNT, &intrcntlen, sizeof(intrcntlen));
if ((*intrcnts = malloc(intrcntlen)) == NULL)
err(1, "malloc()");
if (namelist[X_NINTRCNT].n_type == 0)
kread(X_INTRCNT, *intrcnts, intrcntlen);
else {
kread(X_INTRCNT, &kaddr, sizeof(kaddr));
kreadptr(kaddr, *intrcnts, intrcntlen);
}
} else {
for (*intrcnts = NULL, intrcntlen = 1024; ; intrcntlen *= 2) {
*intrcnts = reallocf(*intrcnts, intrcntlen);
if (*intrcnts == NULL)
err(1, "reallocf()");
if (mysysctl("hw.intrcnt", *intrcnts, &intrcntlen) == 0)
break;
}
}
return (intrcntlen / sizeof(unsigned long));
}
static void
print_intrcnts(unsigned long *intrcnts, unsigned long *old_intrcnts,
char *intrnames, unsigned int nintr, size_t istrnamlen, long long period_ms)
{
uint64_t inttotal, old_inttotal, total_count, total_rate;
unsigned long count, rate;
unsigned int i;
inttotal = 0;
old_inttotal = 0;
xo_open_list("interrupt");
for (i = 0; i < nintr; i++) {
if (intrnames[0] != '\0' && (*intrcnts != 0 || aflag)) {
count = *intrcnts - *old_intrcnts;
rate = ((uint64_t)count * 1000 + period_ms / 2) / period_ms;
xo_open_instance("interrupt");
xo_emit("{d:name/%-*s}{ket:name/%s} "
"{:total/%20lu} {:rate/%10lu}\n",
(int)istrnamlen, intrnames, intrnames, count, rate);
xo_close_instance("interrupt");
}
intrnames += strlen(intrnames) + 1;
inttotal += *intrcnts++;
old_inttotal += *old_intrcnts++;
}
total_count = inttotal - old_inttotal;
total_rate = (total_count * 1000 + period_ms / 2) / period_ms;
xo_close_list("interrupt");
xo_emit("{L:/%-*s} {:total-interrupts/%20ju} "
"{:total-rate/%10ju}\n", (int)istrnamlen,
"Total", (uintmax_t)total_count, (uintmax_t)total_rate);
}
static void
dointr(unsigned int interval, int reps)
{
unsigned long *intrcnts, *old_intrcnts;
char *intrname, *intrnames;
long long period_ms, old_uptime, uptime;
size_t clen, inamlen, istrnamlen;
uintptr_t kaddr;
unsigned int nintr;
old_intrcnts = NULL;
uptime = getuptime();
/* Get the names of each interrupt source */
if (kd != NULL) {
kread(X_SINTRNAMES, &inamlen, sizeof(inamlen));
if ((intrnames = malloc(inamlen)) == NULL)
xo_err(1, "malloc()");
if (namelist[X_NINTRCNT].n_type == 0)
kread(X_INTRNAMES, intrnames, inamlen);
else {
kread(X_INTRNAMES, &kaddr, sizeof(kaddr));
kreadptr(kaddr, intrnames, inamlen);
}
} else {
for (intrnames = NULL, inamlen = 1024; ; inamlen *= 2) {
if ((intrnames = reallocf(intrnames, inamlen)) == NULL)
xo_err(1, "reallocf()");
if (mysysctl("hw.intrnames", intrnames, &inamlen) == 0)
break;
}
}
/* Determine the length of the longest interrupt name */
intrname = intrnames;
istrnamlen = strlen("interrupt");
while (intrname < intrnames + inamlen) {
clen = strlen(intrname);
if (clen > istrnamlen)
istrnamlen = clen;
intrname += strlen(intrname) + 1;
}
xo_emit("{T:/%-*s} {T:/%20s} {T:/%10s}\n",
(int)istrnamlen, "interrupt", "total", "rate");
/*
* Loop reps times printing differential interrupt counts. If reps is
* zero, then run just once, printing total counts
*/
xo_open_container("interrupt-statistics");
period_ms = uptime / 1000000;
while(1) {
nintr = read_intrcnts(&intrcnts);
/*
* Initialize old_intrcnts to 0 for the first pass, so
* print_intrcnts will print total interrupts since boot
*/
if (old_intrcnts == NULL) {
old_intrcnts = calloc(nintr, sizeof(unsigned long));
if (old_intrcnts == NULL)
xo_err(1, "calloc()");
}
print_intrcnts(intrcnts, old_intrcnts, intrnames, nintr,
istrnamlen, period_ms);
xo_flush();
free(old_intrcnts);
old_intrcnts = intrcnts;
if (reps >= 0 && --reps <= 0)
break;
usleep(interval * 1000);
old_uptime = uptime;
uptime = getuptime();
period_ms = (uptime - old_uptime) / 1000000;
}
xo_close_container("interrupt-statistics");
}
static void
domemstat_malloc(void)
{
struct memory_type_list *mtlp;
struct memory_type *mtp;
size_t i, zones;
int error, first;
mtlp = memstat_mtl_alloc();
if (mtlp == NULL) {
xo_warn("memstat_mtl_alloc");
return;
}
if (kd == NULL) {
if (memstat_sysctl_malloc(mtlp, 0) < 0) {
xo_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)
xo_warnx("memstat_kvm_malloc: %s",
kvm_geterr(kd));
else
xo_warnx("memstat_kvm_malloc: %s",
memstat_strerror(error));
}
}
xo_open_container("malloc-statistics");
xo_emit("{T:/%13s} {T:/%5s} {T:/%6s} {T:/%8s} {T:Size(s)}\n",
"Type", "InUse", "MemUse", "Requests");
xo_open_list("memory");
zones = memstat_malloc_zone_get_count();
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;
xo_open_instance("memory");
xo_emit("{k:type/%13s/%s} {:in-use/%5ju} "
"{:memory-use/%5ju}{U:K} {:requests/%8ju} ",
memstat_get_name(mtp), (uintmax_t)memstat_get_count(mtp),
((uintmax_t)memstat_get_bytes(mtp) + 1023) / 1024,
(uintmax_t)memstat_get_numallocs(mtp));
first = 1;
xo_open_list("size");
for (i = 0; i < zones; i++) {
if (memstat_malloc_zone_used(mtp, i)) {
if (!first)
xo_emit(",");
xo_emit("{l:size/%d}", memstat_malloc_zone_get_size(i));
first = 0;
}
}
xo_close_list("size");
xo_close_instance("memory");
xo_emit("\n");
}
xo_close_list("memory");
xo_close_container("malloc-statistics");
memstat_mtl_free(mtlp);
}
static void
domemstat_zone(void)
{
struct memory_type_list *mtlp;
struct memory_type *mtp;
int error;
char name[MEMTYPE_MAXNAME + 1];
mtlp = memstat_mtl_alloc();
if (mtlp == NULL) {
xo_warn("memstat_mtl_alloc");
return;
}
if (kd == NULL) {
if (memstat_sysctl_uma(mtlp, 0) < 0) {
xo_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)
xo_warnx("memstat_kvm_uma: %s",
kvm_geterr(kd));
else
xo_warnx("memstat_kvm_uma: %s",
memstat_strerror(error));
}
}
xo_open_container("memory-zone-statistics");
xo_emit("{T:/%-20s} {T:/%6s} {T:/%6s} {T:/%8s} {T:/%8s} {T:/%8s} {T:/%8s}"
"{T:/%4s} {T:/%4s}\n", "ITEM", "SIZE",
"LIMIT", "USED", "FREE", "REQ", "FAIL", "SLEEP", "XDOMAIN");
xo_open_list("zone");
for (mtp = memstat_mtl_first(mtlp); mtp != NULL;
mtp = memstat_mtl_next(mtp)) {
strlcpy(name, memstat_get_name(mtp), MEMTYPE_MAXNAME);
strcat(name, ":");
xo_open_instance("zone");
xo_emit("{d:name/%-20s}{ke:name/%s} {:size/%6ju}, "
"{:limit/%6ju},{:used/%8ju},"
"{:free/%8ju},{:requests/%8ju},"
"{:fail/%4ju},{:sleep/%4ju},{:xdomain/%4ju}\n", name,
memstat_get_name(mtp),
(uintmax_t)memstat_get_size(mtp),
(uintmax_t)memstat_get_countlimit(mtp),
(uintmax_t)memstat_get_count(mtp),
(uintmax_t)memstat_get_free(mtp),
(uintmax_t)memstat_get_numallocs(mtp),
(uintmax_t)memstat_get_failures(mtp),
(uintmax_t)memstat_get_sleeps(mtp),
(uintmax_t)memstat_get_xdomain(mtp));
xo_close_instance("zone");
}
memstat_mtl_free(mtlp);
xo_close_list("zone");
xo_close_container("memory-zone-statistics");
}
static void
display_object(struct kinfo_vmobject *kvo)
{
const char *str;
xo_open_instance("object");
xo_emit("{:resident/%5ju} ", (uintmax_t)kvo->kvo_resident);
xo_emit("{:active/%5ju} ", (uintmax_t)kvo->kvo_active);
xo_emit("{:inactive/%5ju} ", (uintmax_t)kvo->kvo_inactive);
xo_emit("{:refcount/%3d} ", kvo->kvo_ref_count);
xo_emit("{:shadowcount/%3d} ", kvo->kvo_shadow_count);
#define MEMATTR_STR(type, val) \
if (kvo->kvo_memattr == (type)) { \
str = (val); \
} else
#ifdef VM_MEMATTR_UNCACHEABLE
MEMATTR_STR(VM_MEMATTR_UNCACHEABLE, "UC")
#endif
#ifdef VM_MEMATTR_WRITE_COMBINING
MEMATTR_STR(VM_MEMATTR_WRITE_COMBINING, "WC")
#endif
#ifdef VM_MEMATTR_WRITE_THROUGH
MEMATTR_STR(VM_MEMATTR_WRITE_THROUGH, "WT")
#endif
#ifdef VM_MEMATTR_WRITE_PROTECTED
MEMATTR_STR(VM_MEMATTR_WRITE_PROTECTED, "WP")
#endif
#ifdef VM_MEMATTR_WRITE_BACK
MEMATTR_STR(VM_MEMATTR_WRITE_BACK, "WB")
#endif
#ifdef VM_MEMATTR_WEAK_UNCACHEABLE
MEMATTR_STR(VM_MEMATTR_WEAK_UNCACHEABLE, "UC-")
#endif
#ifdef VM_MEMATTR_WB_WA
MEMATTR_STR(VM_MEMATTR_WB_WA, "WB")
#endif
#ifdef VM_MEMATTR_NOCACHE
MEMATTR_STR(VM_MEMATTR_NOCACHE, "NC")
#endif
#ifdef VM_MEMATTR_DEVICE
MEMATTR_STR(VM_MEMATTR_DEVICE, "DEV")
#endif
#ifdef VM_MEMATTR_DEVICE_NP
MEMATTR_STR(VM_MEMATTR_DEVICE, "NP")
#endif
#ifdef VM_MEMATTR_CACHEABLE
MEMATTR_STR(VM_MEMATTR_CACHEABLE, "C")
#endif
#ifdef VM_MEMATTR_PREFETCHABLE
MEMATTR_STR(VM_MEMATTR_PREFETCHABLE, "PRE")
#endif
{
str = "??";
}
#undef MEMATTR_STR
xo_emit("{:attribute/%-3s} ", str);
switch (kvo->kvo_type) {
case KVME_TYPE_NONE:
str = "--";
break;
case KVME_TYPE_DEFAULT:
str = "df";
break;
case KVME_TYPE_VNODE:
str = "vn";
break;
case KVME_TYPE_SWAP:
str = "sw";
break;
case KVME_TYPE_DEVICE:
str = "dv";
break;
case KVME_TYPE_PHYS:
str = "ph";
break;
case KVME_TYPE_DEAD:
str = "dd";
break;
case KVME_TYPE_SG:
str = "sg";
break;
case KVME_TYPE_MGTDEVICE:
str = "md";
break;
case KVME_TYPE_UNKNOWN:
default:
str = "??";
break;
}
xo_emit("{:type/%-2s} ", str);
xo_emit("{:path/%-s}\n", kvo->kvo_path);
xo_close_instance("object");
}
static void
doobjstat(void)
{
struct kinfo_vmobject *kvo;
int cnt, i;
kvo = kinfo_getvmobject(&cnt);
if (kvo == NULL) {
xo_warn("Failed to fetch VM object list");
return;
}
xo_emit("{T:RES/%5s} {T:ACT/%5s} {T:INACT/%5s} {T:REF/%3s} {T:SHD/%3s} "
"{T:CM/%3s} {T:TP/%2s} {T:PATH/%s}\n");
xo_open_list("object");
for (i = 0; i < cnt; i++)
display_object(&kvo[i]);
free(kvo);
xo_close_list("object");
}
/*
* 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;
xo_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;
xo_errx(1, "%s: %s", sym, kvm_geterr(kd));
}
}
static void
kread(int nlx, void *addr, size_t size)
{
kreado(nlx, addr, size, 0);
}
static void
kreadptr(uintptr_t addr, void *buf, size_t size)
{
if ((size_t)kvm_read(kd, addr, buf, size) != size)
xo_errx(1, "%s", kvm_geterr(kd));
}
static void __dead2
usage(void)
{
xo_error("%s%s",
"usage: vmstat [-afHhimoPsz] [-M core [-N system]] [-c count] [-n devs]\n",
" [-p type,if,pass] [-w wait] [disks] [wait [count]]\n");
xo_finish();
exit(1);
}
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