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freebsd-dev/usr.bin/systat/vmstat.c
gallatin b5b1c5a2ac Correct int/long type mismatch in the proper place this time. freevnodes 
and numvnodes are longs in the kernel.  They should remain longs in systat,
what really needs to change is that they should be using SYSCTL_LONG rather
than SYSCTL_INT.   I also changed wantfreevnodes to SYSCTL_LONG because I
happened to notice it.

I wish there was a way to find all of these automatically..

Pointed out by: bde
2000-12-02 20:08:33 +00:00

866 lines
23 KiB
C
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/*-
* 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.
*/
#ifndef lint
#if 0
static char sccsid[] = "@(#)vmstat.c 8.2 (Berkeley) 1/12/94";
#endif
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
/*
* Cursed vmstat -- from Robert Elz.
*/
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/proc.h>
#include <sys/uio.h>
#include <sys/namei.h>
#include <sys/sysctl.h>
#include <sys/dkstat.h>
#include <sys/vmmeter.h>
#include <vm/vm_param.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <nlist.h>
#include <paths.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <utmp.h>
#include <devstat.h>
#include "systat.h"
#include "extern.h"
#include "devs.h"
static struct Info {
long time[CPUSTATES];
struct vmmeter Cnt;
struct vmtotal Total;
struct nchstats nchstats;
long nchcount;
long *intrcnt;
int bufspace;
int desiredvnodes;
long numvnodes;
long freevnodes;
long numdirtybuffers;
} s, s1, s2, z;
struct statinfo cur, last, run;
#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 __P((struct Info *));
static void copyinfo __P((struct Info *, struct Info *));
static float cputime __P((int));
static void dinfo __P((int, int, struct statinfo *, struct statinfo *));
static void getinfo __P((struct Info *, enum state));
static void putint __P((int, int, int, int));
static void putfloat __P((double, int, int, int, int, int));
static void putlongdouble __P((long double, int, int, int, int, int));
static int ucount __P((void));
static int ncpu;
static int ut;
static char buf[26];
static time_t t;
static double etime;
static int nintr;
static long *intrloc;
static char **intrname;
static int nextintsrow;
static int extended_vm_stats;
struct utmp utmp;
WINDOW *
openkre()
{
ut = open(_PATH_UTMP, O_RDONLY);
if (ut < 0)
error("No utmp");
return (stdscr);
}
void
closekre(w)
WINDOW *w;
{
(void) close(ut);
if (w == NULL)
return;
wclear(w);
wrefresh(w);
}
static struct nlist namelist[] = {
#define X_CNT 0
{ "_cnt" },
#define X_INTRNAMES 1
{ "_intrnames" },
#define X_EINTRNAMES 2
{ "_eintrnames" },
#define X_INTRCNT 3
{ "_intrcnt" },
#define X_EINTRCNT 4
{ "_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 46
#define INTSROW 6 /* uses all rows to bottom and 17 cols */
#define INTSCOL 61
#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 6 /* 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 7 /* max # for space */
#define MAXDRIVES DRIVESPACE /* max # to display */
int
initkre()
{
char *intrnamebuf, *cp;
int i;
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);
}
}
if (num_devices = getnumdevs() < 0) {
warnx("%s", devstat_errbuf);
return(0);
}
cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo));
last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo));
run.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo));
bzero(cur.dinfo, sizeof(struct devinfo));
bzero(last.dinfo, sizeof(struct devinfo));
bzero(run.dinfo, sizeof(struct devinfo));
if (dsinit(MAXDRIVES, &cur, &last, &run) != 1)
return(0);
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 == 0 || 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
fetchkre()
{
time_t now;
struct tm *tp;
time(&now);
tp = localtime(&now);
(void) strftime(buf, sizeof(buf), "%c", tp);
buf[16] = '\0';
getinfo(&s, state);
}
void
labelkre()
{
register int i, j;
clear();
mvprintw(STATROW, STATCOL + 4, "users Load");
mvprintw(MEMROW, MEMCOL, "Mem:KB REAL VIRTUAL");
mvprintw(MEMROW + 1, MEMCOL, " Tot Share Tot Share");
mvprintw(MEMROW + 2, MEMCOL, "Act");
mvprintw(MEMROW + 3, MEMCOL, "All");
mvprintw(MEMROW + 1, MEMCOL + 41, "Free");
mvprintw(PAGEROW, PAGECOL, " VN PAGER SWAP PAGER ");
mvprintw(PAGEROW + 1, PAGECOL, " in out in out ");
mvprintw(PAGEROW + 2, PAGECOL, "count");
mvprintw(PAGEROW + 3, PAGECOL, "pages");
mvprintw(INTSROW, INTSCOL + 3, " Interrupts");
mvprintw(INTSROW + 1, INTSCOL + 9, "total");
mvprintw(VMSTATROW + 1, VMSTATCOL + 10, "cow");
mvprintw(VMSTATROW + 2, VMSTATCOL + 10, "wire");
mvprintw(VMSTATROW + 3, VMSTATCOL + 10, "act");
mvprintw(VMSTATROW + 4, VMSTATCOL + 10, "inact");
mvprintw(VMSTATROW + 5, VMSTATCOL + 10, "cache");
mvprintw(VMSTATROW + 6, VMSTATCOL + 10, "free");
mvprintw(VMSTATROW + 7, VMSTATCOL + 10, "daefr");
mvprintw(VMSTATROW + 8, VMSTATCOL + 10, "prcfr");
mvprintw(VMSTATROW + 9, VMSTATCOL + 10, "react");
mvprintw(VMSTATROW + 10, VMSTATCOL + 10, "pdwake");
mvprintw(VMSTATROW + 11, VMSTATCOL + 10, "pdpgs");
mvprintw(VMSTATROW + 12, VMSTATCOL + 10, "intrn");
mvprintw(VMSTATROW + 13, VMSTATCOL + 10, "buf");
mvprintw(VMSTATROW + 14, VMSTATCOL + 10, "dirtybuf");
mvprintw(VMSTATROW + 15, VMSTATCOL + 10, "desiredvnodes");
mvprintw(VMSTATROW + 16, VMSTATCOL + 10, "numvnodes");
mvprintw(VMSTATROW + 17, VMSTATCOL + 10, "freevnodes");
mvprintw(GENSTATROW, GENSTATCOL, " Csw Trp Sys Int Sof Flt");
mvprintw(GRAPHROW, GRAPHCOL,
" . %%Sys . %%Intr . %%User . %%Nice . %%Idle");
mvprintw(PROCSROW, PROCSCOL, "Proc:r p d s w");
mvprintw(GRAPHROW + 1, GRAPHCOL,
"| | | | | | | | | | |");
mvprintw(NAMEIROW, NAMEICOL, "Namei Name-cache Dir-cache");
mvprintw(NAMEIROW + 1, NAMEICOL,
" Calls hits %% hits %%");
mvprintw(DISKROW, DISKCOL, "Disks");
mvprintw(DISKROW + 1, DISKCOL, "KB/t");
mvprintw(DISKROW + 2, DISKCOL, "tps");
mvprintw(DISKROW + 3, DISKCOL, "MB/s");
mvprintw(DISKROW + 4, DISKCOL, "%% busy");
/*
* For now, we don't support a fourth disk statistic. So there's
* no point in providing a label for it. If someone can think of a
* fourth useful disk statistic, there is room to add it.
*/
/* mvprintw(DISKROW + 4, DISKCOL, " msps"); */
j = 0;
for (i = 0; i < num_devices && j < MAXDRIVES; i++)
if (dev_select[i].selected) {
char tmpstr[80];
sprintf(tmpstr, "%s%d", dev_select[i].device_name,
dev_select[i].unit_number);
mvprintw(DISKROW, DISKCOL + 5 + 6 * j,
" %5.5s", tmpstr);
j++;
}
if (j <= 4) {
/*
* room for extended VM stats
*/
mvprintw(VMSTATROW + 11, VMSTATCOL - 6, "zfod");
mvprintw(VMSTATROW + 12, VMSTATCOL - 6, "ofod");
mvprintw(VMSTATROW + 13, VMSTATCOL - 6, "%%slo-z");
mvprintw(VMSTATROW + 14, VMSTATCOL - 6, "tfree");
extended_vm_stats = 1;
} else {
extended_vm_stats = 0;
mvprintw(VMSTATROW + 0, VMSTATCOL + 10, "zfod");
}
for (i = 0; i < nintr; i++) {
if (intrloc[i] == 0)
continue;
mvprintw(intrloc[i], INTSCOL + 9, "%-10.10s", intrname[i]);
}
}
#define X(fld) {t=s.fld[i]; s.fld[i]-=s1.fld[i]; if(state==TIME) s1.fld[i]=t;}
#define Q(fld) {t=cur.fld[i]; cur.fld[i]-=last.fld[i]; if(state==TIME) last.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_INTR, CP_USER, CP_NICE,
CP_IDLE };
void
showkre()
{
float f1, f2;
int psiz, inttotal;
int i, l, c;
static int failcnt = 0;
etime = 0;
for(i = 0; i < CPUSTATES; i++) {
X(time);
Q(cp_time);
etime += s.time[i];
}
if (etime < 5.0) { /* < 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;
etime /= ncpu;
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, "%-10.10s",
intrname[i]);
}
X(intrcnt);
l = (int)((float)s.intrcnt[i]/etime + 0.5);
inttotal += l;
putint(l, intrloc[i], INTSCOL + 2, 6);
}
putint(inttotal, INTSROW + 1, INTSCOL + 2, 6);
Z(ncs_goodhits); Z(ncs_badhits); Z(ncs_miss);
Z(ncs_long); Z(ncs_pass2); Z(ncs_2passes); Z(ncs_neghits);
s.nchcount = nchtotal.ncs_goodhits + nchtotal.ncs_badhits +
nchtotal.ncs_miss + nchtotal.ncs_long + nchtotal.ncs_neghits;
if (state == TIME)
s1.nchcount = s.nchcount;
psiz = 0;
f2 = 0.0;
for (c = 0; c < CPUSTATES; c++) {
i = cpuorder[c];
f1 = cputime(i);
f2 += f1;
l = (int) ((f2 + 1.0) / 2.0) - psiz;
if (f1 > 99.9)
f1 = 99.9; /* no room to display 100.0 */
putfloat(f1, GRAPHROW, GRAPHCOL + 10 * c, 4, 1, 0);
move(GRAPHROW + 2, psiz);
psiz += l;
while (l-- > 0)
addch(cpuchar[c]);
}
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) * cnt.v_page_size / 1024)
putint(pgtokb(total.t_arm), MEMROW + 2, MEMCOL + 3, 8);
putint(pgtokb(total.t_armshr), MEMROW + 2, MEMCOL + 11, 8);
putint(pgtokb(total.t_avm), MEMROW + 2, MEMCOL + 19, 9);
putint(pgtokb(total.t_avmshr), MEMROW + 2, MEMCOL + 28, 9);
putint(pgtokb(total.t_rm), MEMROW + 3, MEMCOL + 3, 8);
putint(pgtokb(total.t_rmshr), MEMROW + 3, MEMCOL + 11, 8);
putint(pgtokb(total.t_vm), MEMROW + 3, MEMCOL + 19, 9);
putint(pgtokb(total.t_vmshr), MEMROW + 3, MEMCOL + 28, 9);
putint(pgtokb(total.t_free), MEMROW + 2, MEMCOL + 37, 8);
putint(total.t_rq - 1, PROCSROW + 1, PROCSCOL + 3, 3);
putint(total.t_pw, PROCSROW + 1, PROCSCOL + 6, 3);
putint(total.t_dw, PROCSROW + 1, PROCSCOL + 9, 3);
putint(total.t_sl, PROCSROW + 1, PROCSCOL + 12, 3);
putint(total.t_sw, PROCSROW + 1, PROCSCOL + 15, 3);
if (extended_vm_stats == 0) {
PUTRATE(Cnt.v_zfod, VMSTATROW + 0, VMSTATCOL + 4, 5);
}
PUTRATE(Cnt.v_cow_faults, VMSTATROW + 1, VMSTATCOL + 3, 6);
putint(pgtokb(cnt.v_wire_count), VMSTATROW + 2, VMSTATCOL, 9);
putint(pgtokb(cnt.v_active_count), VMSTATROW + 3, VMSTATCOL, 9);
putint(pgtokb(cnt.v_inactive_count), VMSTATROW + 4, VMSTATCOL, 9);
putint(pgtokb(cnt.v_cache_count), VMSTATROW + 5, VMSTATCOL, 9);
putint(pgtokb(cnt.v_free_count), VMSTATROW + 6, VMSTATCOL, 9);
PUTRATE(Cnt.v_dfree, VMSTATROW + 7, VMSTATCOL, 9);
PUTRATE(Cnt.v_pfree, VMSTATROW + 8, VMSTATCOL, 9);
PUTRATE(Cnt.v_reactivated, VMSTATROW + 9, VMSTATCOL, 9);
PUTRATE(Cnt.v_pdwakeups, VMSTATROW + 10, VMSTATCOL, 9);
PUTRATE(Cnt.v_pdpages, VMSTATROW + 11, VMSTATCOL, 9);
PUTRATE(Cnt.v_intrans, VMSTATROW + 12, VMSTATCOL, 9);
if (extended_vm_stats) {
PUTRATE(Cnt.v_zfod, VMSTATROW + 11, VMSTATCOL - 16, 9);
PUTRATE(Cnt.v_ozfod, VMSTATROW + 12, VMSTATCOL - 16, 9);
putint(
((s.Cnt.v_ozfod < s.Cnt.v_zfod) ?
s.Cnt.v_ozfod * 100 / s.Cnt.v_zfod :
0
),
VMSTATROW + 13,
VMSTATCOL - 16,
9
);
PUTRATE(Cnt.v_tfree, VMSTATROW + 14, VMSTATCOL - 16, 9);
}
putint(s.bufspace/1024, VMSTATROW + 13, VMSTATCOL, 9);
putint(s.numdirtybuffers, VMSTATROW + 14, VMSTATCOL, 9);
putint(s.desiredvnodes, VMSTATROW + 15, VMSTATCOL, 9);
putint(s.numvnodes, VMSTATROW + 16, VMSTATCOL, 9);
putint(s.freevnodes, VMSTATROW + 17, VMSTATCOL, 9);
PUTRATE(Cnt.v_vnodein, PAGEROW + 2, PAGECOL + 5, 5);
PUTRATE(Cnt.v_vnodeout, PAGEROW + 2, PAGECOL + 10, 5);
PUTRATE(Cnt.v_swapin, PAGEROW + 2, PAGECOL + 17, 5);
PUTRATE(Cnt.v_swapout, PAGEROW + 2, PAGECOL + 22, 5);
PUTRATE(Cnt.v_vnodepgsin, PAGEROW + 3, PAGECOL + 5, 5);
PUTRATE(Cnt.v_vnodepgsout, PAGEROW + 3, PAGECOL + 10, 5);
PUTRATE(Cnt.v_swappgsin, PAGEROW + 3, PAGECOL + 17, 5);
PUTRATE(Cnt.v_swappgsout, PAGEROW + 3, PAGECOL + 22, 5);
PUTRATE(Cnt.v_swtch, GENSTATROW + 1, GENSTATCOL, 5);
PUTRATE(Cnt.v_trap, GENSTATROW + 1, GENSTATCOL + 5, 5);
PUTRATE(Cnt.v_syscall, GENSTATROW + 1, GENSTATCOL + 10, 5);
PUTRATE(Cnt.v_intr, GENSTATROW + 1, GENSTATCOL + 15, 5);
PUTRATE(Cnt.v_soft, GENSTATROW + 1, GENSTATCOL + 20, 5);
PUTRATE(Cnt.v_vm_faults, GENSTATROW + 1, GENSTATCOL + 25, 5);
mvprintw(DISKROW, DISKCOL + 5, " ");
for (i = 0, c = 0; i < num_devices && c < MAXDRIVES; i++)
if (dev_select[i].selected) {
char tmpstr[80];
sprintf(tmpstr, "%s%d", dev_select[i].device_name,
dev_select[i].unit_number);
mvprintw(DISKROW, DISKCOL + 5 + 6 * c,
" %5.5s", tmpstr);
switch(state) {
case TIME:
dinfo(i, ++c, &cur, &last);
break;
case RUN:
dinfo(i, ++c, &cur, &run);
break;
case BOOT:
dinfo(i, ++c, &cur, NULL);
break;
}
}
putint(s.nchcount, NAMEIROW + 2, NAMEICOL, 9);
putint((nchtotal.ncs_goodhits + nchtotal.ncs_neghits),
NAMEIROW + 2, NAMEICOL + 9, 9);
#define nz(x) ((x) ? (x) : 1)
putfloat((nchtotal.ncs_goodhits+nchtotal.ncs_neghits) *
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 + 33, 4, 0, 1);
#undef nz
}
int
cmdkre(cmd, args)
char *cmd, *args;
{
int retval;
if (prefix(cmd, "run")) {
retval = 1;
copyinfo(&s2, &s1);
switch (getdevs(&run)) {
case -1:
errx(1, "%s", devstat_errbuf);
break;
case 1:
num_devices = run.dinfo->numdevs;
generation = run.dinfo->generation;
retval = dscmd("refresh", NULL, MAXDRIVES, &cur);
if (retval == 2)
labelkre();
break;
default:
break;
}
state = RUN;
return (retval);
}
if (prefix(cmd, "boot")) {
state = BOOT;
copyinfo(&z, &s1);
return (1);
}
if (prefix(cmd, "time")) {
state = TIME;
return (1);
}
if (prefix(cmd, "zero")) {
retval = 1;
if (state == RUN) {
getinfo(&s1, RUN);
switch (getdevs(&run)) {
case -1:
errx(1, "%s", devstat_errbuf);
break;
case 1:
num_devices = run.dinfo->numdevs;
generation = run.dinfo->generation;
retval = dscmd("refresh",NULL, MAXDRIVES, &cur);
if (retval == 2)
labelkre();
break;
default:
break;
}
}
return (retval);
}
retval = dscmd(cmd, args, MAXDRIVES, &cur);
if (retval == 2)
labelkre();
return(retval);
}
/* calculate number of users on the system */
static int
ucount()
{
register int nusers = 0;
if (ut < 0)
return (0);
while (read(ut, &utmp, sizeof(utmp)))
if (utmp.ut_name[0] != '\0')
nusers++;
lseek(ut, 0L, L_SET);
return (nusers);
}
static float
cputime(indx)
int indx;
{
double t;
register 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(n, l, c, w)
int n, l, c, w;
{
char b[128];
move(l, c);
if (n == 0) {
while (w-- > 0)
addch(' ');
return;
}
snprintf(b, sizeof(b), "%*d", w, n);
if (strlen(b) > w) {
while (w-- > 0)
addch('*');
return;
}
addstr(b);
}
static void
putfloat(f, l, c, w, d, nz)
double f;
int l, c, w, d, nz;
{
char b[128];
move(l, c);
if (nz && f == 0.0) {
while (--w >= 0)
addch(' ');
return;
}
snprintf(b, sizeof(b), "%*.*f", w, d, f);
if (strlen(b) > w)
snprintf(b, sizeof(b), "%*.0f", w, f);
if (strlen(b) > w) {
while (--w >= 0)
addch('*');
return;
}
addstr(b);
}
static void
putlongdouble(f, l, c, w, d, nz)
long double f;
int l, c, w, d, nz;
{
char b[128];
move(l, c);
if (nz && f == 0.0) {
while (--w >= 0)
addch(' ');
return;
}
sprintf(b, "%*.*Lf", w, d, f);
if (strlen(b) > w)
sprintf(b, "%*.0Lf", w, f);
if (strlen(b) > w) {
while (--w >= 0)
addch('*');
return;
}
addstr(b);
}
static void
getinfo(s, st)
struct Info *s;
enum state st;
{
struct devinfo *tmp_dinfo;
size_t len, size;
int mib[2], err;
len = sizeof(s->time);
err = sysctlbyname("kern.cp_time", &s->time, &len, NULL, 0);
if (err || len != sizeof(s->time))
perror("kern.cp_time");
len = sizeof(cur.cp_time);
err = sysctlbyname("kern.cp_time", &cur.cp_time, &len, NULL, 0);
if (err || len != sizeof(cur.cp_time))
perror("kern.cp_time");
NREAD(X_CNT, &s->Cnt, sizeof s->Cnt);
len = sizeof(s->bufspace);
err = sysctlbyname("vfs.bufspace", &s->bufspace, &len, NULL, 0);
if (err || len != sizeof(s->bufspace))
perror("vfs.bufspace");
len = sizeof(s->desiredvnodes);
err = sysctlbyname("kern.maxvnodes", &s->desiredvnodes, &len, NULL, 0);
if (err || len != sizeof(s->desiredvnodes))
perror("kern.maxvnodes");
len = sizeof(s->numvnodes);
err = sysctlbyname("debug.numvnodes", &s->numvnodes, &len, NULL, 0);
if (err || len != sizeof(s->numvnodes))
perror("debug.numvnodes");
len = sizeof(s->freevnodes);
err = sysctlbyname("debug.freevnodes", &s->freevnodes, &len, NULL, 0);
if (err || len != sizeof(s->freevnodes))
perror("debug.freevnodes");
len = sizeof(s->nchstats);
err = sysctlbyname("vfs.cache.nchstats", &s->nchstats, &len, NULL, 0);
if (err || len != sizeof(s->nchstats))
perror("vfs.cache.nchstats");
NREAD(X_INTRCNT, s->intrcnt, nintr * LONG);
len = sizeof(s->numdirtybuffers);
err = sysctlbyname("vfs.numdirtybuffers", &s->numdirtybuffers, &len,
NULL, 0);
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));
bzero(&s->Total, sizeof(s->Total));
}
size = sizeof(ncpu);
if (sysctlbyname("hw.ncpu", &ncpu, &size, NULL, 0) < 0 ||
size != sizeof(ncpu))
ncpu = 1;
tmp_dinfo = last.dinfo;
last.dinfo = cur.dinfo;
cur.dinfo = tmp_dinfo;
last.busy_time = cur.busy_time;
switch (getdevs(&cur)) {
case -1:
errx(1, "%s", devstat_errbuf);
break;
case 1:
num_devices = cur.dinfo->numdevs;
generation = cur.dinfo->generation;
cmdkre("refresh", NULL);
break;
default:
break;
}
}
static void
allocinfo(s)
struct Info *s;
{
s->intrcnt = (long *) calloc(nintr, sizeof(long));
if (s->intrcnt == NULL)
errx(2, "out of memory");
}
static void
copyinfo(from, to)
register struct Info *from, *to;
{
long *intrcnt;
/*
* time, wds, seek, and xfer are malloc'd so we have to
* save the pointers before the structure copy and then
* copy by hand.
*/
intrcnt = to->intrcnt;
*to = *from;
bcopy(from->intrcnt, to->intrcnt = intrcnt, nintr * sizeof (int));
}
static void
dinfo(dn, c, now, then)
int dn, c;
struct statinfo *now, *then;
{
long double transfers_per_second;
long double kb_per_transfer, mb_per_second;
long double elapsed_time, device_busy;
int di;
di = dev_select[dn].position;
elapsed_time = compute_etime(now->busy_time, then ?
then->busy_time :
now->dinfo->devices[di].dev_creation_time);
device_busy = compute_etime(now->dinfo->devices[di].busy_time, then ?
then->dinfo->devices[di].busy_time :
now->dinfo->devices[di].dev_creation_time);
if (compute_stats(&now->dinfo->devices[di], then ?
&then->dinfo->devices[di] : NULL, elapsed_time,
NULL, NULL, NULL,
&kb_per_transfer, &transfers_per_second,
&mb_per_second, NULL, NULL) != 0)
errx(1, "%s", devstat_errbuf);
if ((device_busy == 0) && (transfers_per_second > 5))
/* the device has been 100% busy, fake it because
* as long as the device is 100% busy the busy_time
* field in the devstat struct is not updated */
device_busy = elapsed_time;
if (device_busy > elapsed_time)
/* this normally happens after one or more periods
* where the device has been 100% busy, correct it */
device_busy = elapsed_time;
c = DISKCOL + c * 6;
putlongdouble(kb_per_transfer, DISKROW + 1, c, 5, 2, 0);
putlongdouble(transfers_per_second, DISKROW + 2, c, 5, 0, 0);
putlongdouble(mb_per_second, DISKROW + 3, c, 5, 2, 0);
putlongdouble(device_busy * 100 / elapsed_time, DISKROW + 4, c, 5, 0, 0);
}
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