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NetBSD/usr.bin/systat/vmstat.c

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/* $NetBSD: vmstat.c,v 1.35 2000/12/01 02:19:44 simonb Exp $ */
/*-
* Copyright (c) 1983, 1989, 1992, 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.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)vmstat.c 8.2 (Berkeley) 1/12/94";
#endif
__RCSID("$NetBSD: vmstat.c,v 1.35 2000/12/01 02:19:44 simonb Exp $");
#endif /* not lint */
/*
* Cursed vmstat -- from Robert Elz.
*/
#include <sys/param.h>
#include <sys/dkstat.h>
#include <sys/user.h>
#include <sys/namei.h>
#include <sys/sysctl.h>
#include <uvm/uvm_extern.h>
#include <stdlib.h>
#include <string.h>
#include <utmp.h>
#include "systat.h"
#include "extern.h"
#include "dkstats.h"
static struct Info {
u_int64_t time[CPUSTATES];
struct uvmexp_sysctl uvmexp;
struct vmtotal Total;
struct nchstats nchstats;
long nchcount;
long *intrcnt;
} s, s1, s2, z;
#define cnt s.Cnt
#define oldcnt s1.Cnt
#define total s.Total
#define nchtotal s.nchstats
#define oldnchtotal s1.nchstats
static enum state { BOOT, TIME, RUN } state = TIME;
static void allocinfo(struct Info *);
static void copyinfo(struct Info *, struct Info *);
static float cputime(int);
static void dinfo(int, int);
static void getinfo(struct Info *, enum state);
static void putint(int, int, int, int);
static void putfloat(double, int, int, int, int, int);
static int ucount(void);
static int ut;
static char buf[26];
static u_int64_t t;
static double etime;
static float hertz;
static int nintr;
static long *intrloc;
static char **intrname;
static int nextintsrow;
struct utmp utmp;
WINDOW *
openvmstat(void)
{
ut = open(_PATH_UTMP, O_RDONLY);
if (ut < 0)
error("No utmp");
return (stdscr);
}
void
closevmstat(WINDOW *w)
{
(void) close(ut);
if (w == NULL)
return;
wclear(w);
wrefresh(w);
}
static struct nlist namelist[] = {
#define X_TOTAL 0
{ "_total" },
#define X_NCHSTATS 1
{ "_nchstats" },
#define X_INTRNAMES 2
{ "_intrnames" },
#define X_EINTRNAMES 3
{ "_eintrnames" },
#define X_INTRCNT 4
{ "_intrcnt" },
#define X_EINTRCNT 5
{ "_eintrcnt" },
{ "" },
};
/*
* These constants define where the major pieces are laid out
*/
#define STATROW 0 /* uses 1 row and 68 cols */
#define STATCOL 2
#define MEMROW 2 /* uses 4 rows and 31 cols */
#define MEMCOL 0
#define PAGEROW 2 /* uses 4 rows and 26 cols */
#define PAGECOL 36
#define INTSROW 2 /* uses all rows to bottom and 17 cols */
#define INTSCOL 63
#define PROCSROW 7 /* uses 2 rows and 20 cols */
#define PROCSCOL 0
#define GENSTATROW 7 /* uses 2 rows and 30 cols */
#define GENSTATCOL 20
#define VMSTATROW 7 /* uses 17 rows and 12 cols */
#define VMSTATCOL 48
#define GRAPHROW 10 /* uses 3 rows and 51 cols */
#define GRAPHCOL 0
#define NAMEIROW 14 /* uses 3 rows and 38 cols */
#define NAMEICOL 0
#define DISKROW 18 /* uses 5 rows and 50 cols (for 9 drives) */
#define DISKCOL 0
#define DRIVESPACE 9 /* max # for space */
#if DK_NDRIVE > DRIVESPACE
#define MAXDRIVES DRIVESPACE /* max # to display */
#else
#define MAXDRIVES DK_NDRIVE /* max # to display */
#endif
int
initvmstat(void)
{
char *intrnamebuf, *cp;
int i;
static int once = 0;
if (namelist[0].n_type == 0) {
if (kvm_nlist(kd, namelist)) {
nlisterr(namelist);
return(0);
}
if (namelist[0].n_type == 0) {
error("No namelist");
return(0);
}
}
hertz = stathz ? stathz : hz;
if (! dkinit(1, egid))
return(0);
if (dk_ndrive && !once) {
#define allocate(e, t) \
s./**/e = (t *)calloc(dk_ndrive, sizeof (t)); \
s1./**/e = (t *)calloc(dk_ndrive, sizeof (t)); \
s2./**/e = (t *)calloc(dk_ndrive, sizeof (t)); \
z./**/e = (t *)calloc(dk_ndrive, sizeof (t));
once = 1;
#undef allocate
}
if (nintr == 0) {
nintr = (namelist[X_EINTRCNT].n_value -
namelist[X_INTRCNT].n_value) / sizeof (long);
intrloc = calloc(nintr, sizeof (long));
intrname = calloc(nintr, sizeof (long));
intrnamebuf = malloc(namelist[X_EINTRNAMES].n_value -
namelist[X_INTRNAMES].n_value);
if (intrnamebuf == NULL || intrname == 0 || intrloc == 0) {
error("Out of memory\n");
if (intrnamebuf)
free(intrnamebuf);
if (intrname)
free(intrname);
if (intrloc)
free(intrloc);
nintr = 0;
return(0);
}
NREAD(X_INTRNAMES, intrnamebuf, NVAL(X_EINTRNAMES) -
NVAL(X_INTRNAMES));
for (cp = intrnamebuf, i = 0; i < nintr; i++) {
intrname[i] = cp;
cp += strlen(cp) + 1;
}
nextintsrow = INTSROW + 2;
allocinfo(&s);
allocinfo(&s1);
allocinfo(&s2);
allocinfo(&z);
}
getinfo(&s2, RUN);
copyinfo(&s2, &s1);
return(1);
}
void
fetchvmstat(void)
{
time_t now;
time(&now);
strcpy(buf, ctime(&now));
buf[19] = '\0';
getinfo(&s, state);
}
void
labelvmstat(void)
{
int i, j;
clear();
mvprintw(STATROW, STATCOL + 4, "users Load");
mvprintw(MEMROW, MEMCOL, " memory totals (in KB)");
mvprintw(MEMROW + 1, MEMCOL, " real virtual free");
mvprintw(MEMROW + 2, MEMCOL, "Active");
mvprintw(MEMROW + 3, MEMCOL, "All");
mvprintw(PAGEROW, PAGECOL, " PAGING SWAPPING ");
mvprintw(PAGEROW + 1, PAGECOL, " in out in out ");
mvprintw(PAGEROW + 2, PAGECOL, "ops");
mvprintw(PAGEROW + 3, PAGECOL, "pages");
mvprintw(INTSROW, INTSCOL + 3, " Interrupts");
mvprintw(INTSROW + 1, INTSCOL + 9, "total");
mvprintw(VMSTATROW + 0, VMSTATCOL + 10, "forks");
mvprintw(VMSTATROW + 1, VMSTATCOL + 10, "fkppw");
mvprintw(VMSTATROW + 2, VMSTATCOL + 10, "fksvm");
mvprintw(VMSTATROW + 3, VMSTATCOL + 10, "pwait");
mvprintw(VMSTATROW + 4, VMSTATCOL + 10, "relck");
mvprintw(VMSTATROW + 5, VMSTATCOL + 10, "rlkok");
mvprintw(VMSTATROW + 6, VMSTATCOL + 10, "noram");
mvprintw(VMSTATROW + 7, VMSTATCOL + 10, "ndcpy");
mvprintw(VMSTATROW + 8, VMSTATCOL + 10, "fltcp");
mvprintw(VMSTATROW + 9, VMSTATCOL + 10, "zfod");
mvprintw(VMSTATROW + 10, VMSTATCOL + 10, "cow");
mvprintw(VMSTATROW + 11, VMSTATCOL + 10, "fmin");
mvprintw(VMSTATROW + 12, VMSTATCOL + 10, "ftarg");
mvprintw(VMSTATROW + 13, VMSTATCOL + 10, "itarg");
mvprintw(VMSTATROW + 14, VMSTATCOL + 10, "wired");
mvprintw(VMSTATROW + 15, VMSTATCOL + 10, "pdfre");
if (LINES - 1 > VMSTATROW + 16)
mvprintw(VMSTATROW + 16, VMSTATCOL + 10, "pdscn");
mvprintw(GENSTATROW, GENSTATCOL, " Csw Trp Sys Int Sof Flt");
mvprintw(GRAPHROW, GRAPHCOL,
" . %% Sy . %% Us . %% Ni . %% In . %% Id");
mvprintw(PROCSROW, PROCSCOL, "Proc:r d s w");
mvprintw(GRAPHROW + 1, GRAPHCOL,
"| | | | | | | | | | |");
mvprintw(NAMEIROW, NAMEICOL, "Namei Sys-cache Proc-cache");
mvprintw(NAMEIROW + 1, NAMEICOL,
" Calls hits %% hits %%");
mvprintw(DISKROW, DISKCOL, "Discs");
mvprintw(DISKROW + 1, DISKCOL, "seeks");
mvprintw(DISKROW + 2, DISKCOL, "xfers");
mvprintw(DISKROW + 3, DISKCOL, "Kbyte");
mvprintw(DISKROW + 4, DISKCOL, "%%busy");
j = 0;
for (i = 0; i < dk_ndrive && j < MAXDRIVES; i++)
if (dk_select[i]) {
mvprintw(DISKROW, DISKCOL + 5 + 5 * j,
" %4.4s", dr_name[j]);
j++;
}
for (i = 0; i < nintr; i++) {
if (intrloc[i] == 0)
continue;
mvprintw(intrloc[i], INTSCOL + 9, "%-8.8s", intrname[i]);
}
}
#define X(fld) {t=s.fld[i]; s.fld[i]-=s1.fld[i]; if(state==TIME) s1.fld[i]=t;}
#define Y(fld) {t = s.fld; s.fld -= s1.fld; if(state == TIME) s1.fld = t;}
#define Z(fld) {t = s.nchstats.fld; s.nchstats.fld -= s1.nchstats.fld; \
if(state == TIME) s1.nchstats.fld = t;}
#define PUTRATE(fld, l, c, w) {Y(fld); putint((int)((float)s.fld/etime + 0.5), l, c, w);}
#define MAXFAIL 5
static char cpuchar[CPUSTATES] = { '=' , '>', '-', '%', ' ' };
static char cpuorder[CPUSTATES] = { CP_SYS, CP_USER, CP_NICE, CP_INTR, CP_IDLE };
void
showvmstat(void)
{
float f1, f2;
int psiz, inttotal;
int i, l, c;
static int failcnt = 0;
if (state == TIME)
dkswap();
etime = 0;
for(i = 0; i < CPUSTATES; i++) {
X(time);
etime += s.time[i];
}
if (etime < 1.0) { /* < 5 ticks - ignore this trash */
if (failcnt++ >= MAXFAIL) {
clear();
mvprintw(2, 10, "The alternate system clock has died!");
mvprintw(3, 10, "Reverting to ``pigs'' display.");
move(CMDLINE, 0);
refresh();
failcnt = 0;
sleep(5);
command("pigs");
}
return;
}
failcnt = 0;
etime /= hertz;
inttotal = 0;
for (i = 0; i < nintr; i++) {
if (s.intrcnt[i] == 0)
continue;
if (intrloc[i] == 0) {
if (nextintsrow == LINES)
continue;
intrloc[i] = nextintsrow++;
mvprintw(intrloc[i], INTSCOL + 9, "%-8.8s",
intrname[i]);
}
X(intrcnt);
l = (int)((float)s.intrcnt[i]/etime + 0.5);
inttotal += l;
putint(l, intrloc[i], INTSCOL, 8);
}
putint(inttotal, INTSROW + 1, INTSCOL, 8);
Z(ncs_goodhits); Z(ncs_badhits); Z(ncs_miss);
Z(ncs_long); Z(ncs_pass2); Z(ncs_2passes);
s.nchcount = nchtotal.ncs_goodhits + nchtotal.ncs_badhits +
nchtotal.ncs_miss + nchtotal.ncs_long;
if (state == TIME)
s1.nchcount = s.nchcount;
psiz = 0;
f2 = 0.0;
/*
* Last CPU state not calculated yet.
*/
for (c = 0; c < CPUSTATES; c++) {
i = cpuorder[c];
f1 = cputime(i);
f2 += f1;
l = (int) ((f2 + 1.0) / 2.0) - psiz;
if (c == 0)
putfloat(f1, GRAPHROW, GRAPHCOL + 1, 5, 1, 0);
else
putfloat(f1, GRAPHROW, GRAPHCOL + 10 * c + 1, 5, 1, 0);
mvhline(GRAPHROW + 2, psiz, cpuchar[c], l);
psiz += l;
}
putint(ucount(), STATROW, STATCOL, 3);
putfloat(avenrun[0], STATROW, STATCOL + 17, 6, 2, 0);
putfloat(avenrun[1], STATROW, STATCOL + 23, 6, 2, 0);
putfloat(avenrun[2], STATROW, STATCOL + 29, 6, 2, 0);
mvaddstr(STATROW, STATCOL + 53, buf);
#define pgtokb(pg) ((pg) * (s.uvmexp.pagesize / 1024))
putint(pgtokb(s.uvmexp.active), MEMROW + 2, MEMCOL + 6, 7);
putint(pgtokb(s.uvmexp.active + s.uvmexp.swpginuse), /* XXX */
MEMROW + 2, MEMCOL + 16, 7);
putint(pgtokb(s.uvmexp.npages - s.uvmexp.free), MEMROW + 3, MEMCOL + 6, 7);
putint(pgtokb(s.uvmexp.npages - s.uvmexp.free + s.uvmexp.swpginuse),
MEMROW + 3, MEMCOL + 16, 7);
putint(pgtokb(s.uvmexp.free), MEMROW + 2, MEMCOL + 24, 7);
putint(pgtokb(s.uvmexp.free + s.uvmexp.swpages - s.uvmexp.swpginuse),
MEMROW + 3, MEMCOL + 24, 7);
putint(total.t_rq - 1, PROCSROW + 1, PROCSCOL + 3, 3);
putint(total.t_dw, PROCSROW + 1, PROCSCOL + 6, 3);
putint(total.t_sl, PROCSROW + 1, PROCSCOL + 9, 3);
putint(total.t_sw, PROCSROW + 1, PROCSCOL + 12, 3);
PUTRATE(uvmexp.forks, VMSTATROW + 0, VMSTATCOL + 3, 6);
PUTRATE(uvmexp.forks_ppwait, VMSTATROW + 1, VMSTATCOL + 3, 6);
PUTRATE(uvmexp.forks_sharevm, VMSTATROW + 2, VMSTATCOL + 3, 6);
PUTRATE(uvmexp.fltpgwait, VMSTATROW + 3, VMSTATCOL + 4, 5);
PUTRATE(uvmexp.fltrelck, VMSTATROW + 4, VMSTATCOL + 3, 6);
PUTRATE(uvmexp.fltrelckok, VMSTATROW + 5, VMSTATCOL + 3, 6);
PUTRATE(uvmexp.fltnoram, VMSTATROW + 6, VMSTATCOL + 3, 6);
PUTRATE(uvmexp.fltamcopy, VMSTATROW + 7, VMSTATCOL + 3, 6);
PUTRATE(uvmexp.flt_prcopy, VMSTATROW + 8, VMSTATCOL + 3, 6);
PUTRATE(uvmexp.flt_przero, VMSTATROW + 9, VMSTATCOL + 3, 6);
PUTRATE(uvmexp.flt_acow, VMSTATROW + 10, VMSTATCOL, 9);
putint(s.uvmexp.freemin, VMSTATROW + 11, VMSTATCOL, 9);
putint(s.uvmexp.freetarg, VMSTATROW + 12, VMSTATCOL, 9);
putint(s.uvmexp.inactarg, VMSTATROW + 13, VMSTATCOL, 9);
putint(s.uvmexp.wired, VMSTATROW + 14, VMSTATCOL, 9);
PUTRATE(uvmexp.pdfreed, VMSTATROW + 15, VMSTATCOL, 9);
if (LINES - 1 > VMSTATROW + 16)
PUTRATE(uvmexp.pdscans, VMSTATROW + 16, VMSTATCOL, 9);
PUTRATE(uvmexp.pageins, PAGEROW + 2, PAGECOL + 5, 5);
PUTRATE(uvmexp.pdpageouts, PAGEROW + 2, PAGECOL + 10, 5);
PUTRATE(uvmexp.swapins, PAGEROW + 2, PAGECOL + 15, 5);
PUTRATE(uvmexp.swapouts, PAGEROW + 2, PAGECOL + 20, 5);
PUTRATE(uvmexp.pgswapin, PAGEROW + 3, PAGECOL + 5, 5);
PUTRATE(uvmexp.pgswapout, PAGEROW + 3, PAGECOL + 10, 5);
PUTRATE(uvmexp.swtch, GENSTATROW + 1, GENSTATCOL, 5);
PUTRATE(uvmexp.traps, GENSTATROW + 1, GENSTATCOL + 5, 5);
PUTRATE(uvmexp.syscalls, GENSTATROW + 1, GENSTATCOL + 10, 5);
PUTRATE(uvmexp.intrs, GENSTATROW + 1, GENSTATCOL + 15, 5);
PUTRATE(uvmexp.softs, GENSTATROW + 1, GENSTATCOL + 20, 5);
PUTRATE(uvmexp.faults, GENSTATROW + 1, GENSTATCOL + 25, 5);
mvprintw(DISKROW, DISKCOL + 5, " ");
for (i = 0, c = 0; i < dk_ndrive && c < MAXDRIVES; i++)
if (dk_select[i]) {
mvprintw(DISKROW, DISKCOL + 5 + 5 * c,
" %4.4s", dr_name[i]);
dinfo(i, ++c);
}
putint(s.nchcount, NAMEIROW + 2, NAMEICOL, 9);
putint(nchtotal.ncs_goodhits, NAMEIROW + 2, NAMEICOL + 9, 9);
#define nz(x) ((x) ? (x) : 1)
putfloat(nchtotal.ncs_goodhits * 100.0 / nz(s.nchcount),
NAMEIROW + 2, NAMEICOL + 19, 4, 0, 1);
putint(nchtotal.ncs_pass2, NAMEIROW + 2, NAMEICOL + 23, 9);
putfloat(nchtotal.ncs_pass2 * 100.0 / nz(s.nchcount),
NAMEIROW + 2, NAMEICOL + 34, 4, 0, 1);
#undef nz
}
void
vmstat_boot(char *args)
{
copyinfo(&z, &s1);
state = BOOT;
}
void
vmstat_run(char *args)
{
copyinfo(&s1, &s2);
state = RUN;
}
void
vmstat_time (args)
char * args;
{
state = TIME;
}
void
vmstat_zero(char *args)
{
if (state == RUN)
getinfo(&s1, RUN);
}
/* calculate number of users on the system */
static int
ucount(void)
{
int nusers = 0, onusers = -1;
if (ut < 0)
return (0);
while (read(ut, &utmp, sizeof(utmp)))
if (utmp.ut_name[0] != '\0')
nusers++;
if (nusers != onusers) {
if (nusers == 1)
mvprintw(STATROW, STATCOL + 8, " ");
else
mvprintw(STATROW, STATCOL + 8, "s");
}
lseek(ut, (off_t)0, SEEK_SET);
onusers = nusers;
return (nusers);
}
static float
cputime(int indx)
{
double t;
int i;
t = 0;
for (i = 0; i < CPUSTATES; i++)
t += s.time[i];
if (t == 0.0)
t = 1.0;
return (s.time[indx] * 100.0 / t);
}
static void
putint(int n, int l, int c, int w)
{
char b[128];
move(l, c);
if (n == 0) {
hline(' ', w);
return;
}
(void)snprintf(b, sizeof b, "%*d", w, n);
if (strlen(b) > w) {
hline('*', w);
return;
}
addstr(b);
}
static void
putfloat(double f, int l, int c, int w, int d, int nz)
{
char b[128];
move(l, c);
if (nz && f == 0.0) {
hline(' ', w);
return;
}
(void)snprintf(b, sizeof b, "%*.*f", w, d, f);
if (strlen(b) > w) {
hline('*', w);
return;
}
addstr(b);
}
static void
getinfo(struct Info *s, enum state st)
{
int mib[2];
size_t size;
dkreadstats();
(void) fetch_cptime(s->time);
NREAD(X_NCHSTATS, &s->nchstats, sizeof s->nchstats);
NREAD(X_INTRCNT, s->intrcnt, nintr * LONG);
size = sizeof(s->uvmexp);
mib[0] = CTL_VM;
mib[1] = VM_UVMEXP2;
if (sysctl(mib, 2, &s->uvmexp, &size, NULL, 0) < 0) {
error("can't get uvmexp: %s\n", strerror(errno));
memset(&s->uvmexp, 0, sizeof(s->uvmexp));
}
size = sizeof(s->Total);
mib[0] = CTL_VM;
mib[1] = VM_METER;
if (sysctl(mib, 2, &s->Total, &size, NULL, 0) < 0) {
error("Can't get kernel info: %s\n", strerror(errno));
memset(&s->Total, 0, sizeof(s->Total));
}
}
static void
allocinfo(struct Info *s)
{
if ((s->intrcnt = malloc(nintr * sizeof(long))) == NULL) {
error("malloc failed");
die(0);
}
}
static void
copyinfo(struct Info *from, struct Info *to)
{
long *intrcnt;
intrcnt = to->intrcnt;
*to = *from;
memmove(to->intrcnt = intrcnt, from->intrcnt, nintr * sizeof (int));
}
static void
dinfo(int dn, int c)
{
double words, atime;
c = DISKCOL + c * 5;
/* time busy in disk activity */
atime = (double)cur.dk_time[dn].tv_sec +
((double)cur.dk_time[dn].tv_usec / (double)1000000);
words = cur.dk_bytes[dn] / 1024.0; /* # of K transferred */
putint((int)((float)cur.dk_seek[dn]/etime+0.5), DISKROW + 1, c, 5);
putint((int)((float)cur.dk_xfer[dn]/etime+0.5), DISKROW + 2, c, 5);
putint((int)(words/etime + 0.5), DISKROW + 3, c, 5);
putfloat(atime*100.0/etime, DISKROW + 4, c, 5, 1, 1);
}
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