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new format functions

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This commit is contained in:
albert 2002-11-08 23:29:34 +00:00
parent 25273095ad
commit 2754004de0
1 changed files with 271 additions and 95 deletions
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366
vmstat.c
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@ -1,21 +1,4 @@
#define PROGNAME "vmstat"
/* Copyright 1994 by Henry Ware <al172@yfn.ysu.edu>. Copyleft same year. */
/* This attempts to display virtual memory statistics.
vmstat does not need to be run as root.
*/
/* TODO etc.
* Count the system calls. How? I don't even know where to start.
* add more items- aim at Posix 1003.2 (1003.7?) compliance, if relevant (I.
don't think it is, but let me know.)
* sometimes d(inter)<d(ticks)!! This is not possible: inter is a sum of
positive numbers including ticks. But it happens. This doesn't seem to
affect things much, however.
* It would be interesting to see when the buffers avert a block io:
Like SysV4's "sar -b"... it might fit better here, with Linux's variable
buffer size.
* Ideally, blocks in & out would be counted in 1k increments, rather than
by block: this only makes a difference for CDs and is a problematic fix.
*/
#include "proc/sysinfo.h"
#include "proc/version.h"
@ -32,8 +15,6 @@
#include <sys/dir.h>
#include <dirent.h>
#define NDEBUG !DEBUG
#define BUFFSIZE 8192
#define FALSE 0
#define TRUE 1
@ -43,17 +24,19 @@ static char buff[BUFFSIZE]; /* used in the procedures */
typedef unsigned long long jiff;
static int a_option; /* "-a" means "show active/inactive" */
static unsigned sleep_time = 1;
static unsigned long num_updates;
static unsigned int height=22; // window height, reset later if needed
static unsigned int height; // window height
static unsigned int moreheaders=TRUE;
/****************************************************************/
/////////////////////////////////////////////////////////////////////////
static void usage(void) {
fprintf(stderr,"usage: %s [-V] [-n] [delay [count]]\n",PROGNAME);
fprintf(stderr,"usage: vmstat [-V] [-n] [delay [count]]\n");
fprintf(stderr," -V prints version.\n");
fprintf(stderr," -n causes the headers not to be reprinted regularly.\n");
fprintf(stderr," -a print inactive/active page stats.\n");
@ -67,42 +50,24 @@ static void crash(const char *filename) {
exit(EXIT_FAILURE);
}
static int winhi(void) {
struct winsize win;
int rows = 24;
if (ioctl(1, TIOCGWINSZ, &win) != -1 && win.ws_row > 0)
rows = win.ws_row;
return rows;
}
static void showheader(void){
printf("%8s%28s%10s%12s%11s%9s\n",
"procs","memory","swap","io","system","cpu");
printf("%2s %2s %2s %6s %6s %6s %6s %4s %4s %5s %5s %4s %5s %2s %2s %2s\n",
"r","b","w","swpd","free",
a_option?"inact":"buff", a_option?"active":"cache",
"si","so","bi","bo",
"in","cs","us","sy","id");
}
////////////////////////////////////////////////////////////////////////
static void getstat(jiff *cuse, jiff *cice, jiff *csys, jiff *cide, jiff *ciow,
unsigned *pin, unsigned *pout, unsigned *s_in, unsigned *sout,
unsigned *itot, unsigned *i1, unsigned *ct) {
static int Stat;
static int fd;
int need_extra_file = 0;
char* b;
buff[BUFFSIZE-1] = 0; /* ensure null termination in buffer */
if(Stat){
lseek(Stat, 0L, SEEK_SET);
if(fd){
lseek(fd, 0L, SEEK_SET);
}else{
Stat = open("/proc/stat", O_RDONLY, 0);
if(Stat == -1) crash("/proc/stat");
fd = open("/proc/stat", O_RDONLY, 0);
if(fd == -1) crash("/proc/stat");
}
read(Stat,buff,BUFFSIZE-1);
read(fd,buff,BUFFSIZE-1);
*itot = 0;
*i1 = 1; /* ensure assert below will fail if the sscanf bombs */
*ciow = 0; /* not separated out until the 2.5.41 kernel */
@ -133,46 +98,49 @@ static void getstat(jiff *cuse, jiff *cice, jiff *csys, jiff *cide, jiff *ciow,
}
}
static void getrunners(unsigned int *running, unsigned int *blocked,
unsigned int *swapped) {
unsigned int *r_swapp, unsigned int *d_swapp) {
static struct direct *ent;
static char filename[80];
static int fd;
static unsigned size;
static char c;
DIR *proc;
*running=0;
*blocked=0;
*swapped=0;
*r_swapp=0;
*d_swapp=0;
if ((proc=opendir("/proc"))==NULL) crash("/proc");
if((proc=opendir("/proc"))==NULL) crash("/proc");
while((ent=readdir(proc))) {
if (isdigit(ent->d_name[0])) { /*just to weed out the obvious junk*/
sprintf(filename, "/proc/%s/stat", ent->d_name);
if ((fd = open(filename, O_RDONLY, 0)) != -1) { /*this weeds the rest*/
read(fd,buff,BUFFSIZE-1);
sscanf(
buff,
"%*d %*s %c "
"%*d %*d %*d %*d %*d %*u %*u"
" %*u %*u %*u %*d %*d %*d %*d %*d %*d %*u %*u %*d %*u %u"
/* " %*u %*u %*u %*u %*u %*u %*u %*u %*u %*u %*u\n" */ ,
&c,
&size
);
close(fd);
while(( ent=readdir(proc) )) {
unsigned size;
int fd;
char filename[80];
char c;
if (!isdigit(ent->d_name[0])) continue;
sprintf(filename, "/proc/%s/stat", ent->d_name);
fd = open(filename, O_RDONLY, 0);
if (fd == -1) continue;
read(fd,buff,BUFFSIZE-1);
sscanf(
buff,
"%*d %*s %c "
"%*d %*d %*d %*d %*d %*u %*u"
" %*u %*u %*u %*d %*d %*d %*d %*d %*d %*u %*u %*d %*u %u"
/* " %*u %*u %*u %*u %*u %*u %*u %*u %*u %*u %*u\n" */ ,
&c,
&size
);
close(fd);
if (c=='R') {
if (size>0) (*running)++;
else (*swapped)++;
}
else if (c=='D') {
if (size>0) (*blocked)++;
else (*swapped)++;
}
}
if (c=='R') {
if (size>0) (*running)++;
else (*r_swapp)++; // supposedly swapped
continue;
}
if (c=='D') {
if (size>0) (*blocked)++;
else (*d_swapp)++; // supposedly swapped
continue;
}
}
closedir(proc);
@ -187,34 +155,46 @@ static void getrunners(unsigned int *running, unsigned int *blocked,
//////////////////////////////////////////////////////////////////////////////////////
void old_format(void) {
static void old_header(void){
printf("%8s%28s%10s%12s%11s%9s\n",
"procs","memory","swap","io","system","cpu");
printf("%2s %2s %2s %6s %6s %6s %6s %4s %4s %5s %5s %4s %5s %2s %2s %2s\n",
"r","b","w","swpd","free",
a_option?"inact":"buff", a_option?"active":"cache",
"si","so","bi","bo",
"in","cs","us","sy","id");
}
static void old_format(void) {
const char format[]="%2u %2u %2u %6u %6u %6u %6u %4u %4u %5u %5u %4u %5u %2u %2u %2u\n";
unsigned int tog=0; /* toggle switch for cleaner code */
unsigned int i;
unsigned int hz = Hertz;
unsigned int running,blocked,swapped;
unsigned int running,blocked,r_swapp,d_swapp;
jiff cpu_use[2], cpu_nic[2], cpu_sys[2], cpu_idl[2], cpu_iow[2];
jiff duse,dsys,didl,Div,divo2;
jiff duse,dsys,didl,diow,Div,divo2;
unsigned int pgpgin[2], pgpgout[2], pswpin[2], pswpout[2];
unsigned int inter[2],ticks[2],ctxt[2];
unsigned int sleep_half;
unsigned int kb_per_page = sysconf(_SC_PAGESIZE) / 1024;
int debt = 0; // handle idle ticks running backwards
sleep_half=(sleep_time/2);
showheader();
old_header();
getrunners(&running,&blocked,&swapped);
getrunners(&running,&blocked,&r_swapp,&d_swapp);
meminfo();
getstat(cpu_use,cpu_nic,cpu_sys,cpu_idl,cpu_iow,
pgpgin,pgpgout,pswpin,pswpout,
inter,ticks,ctxt);
duse= *cpu_use + *cpu_nic;
dsys= *cpu_sys;
didl= *cpu_idl + *cpu_iow;
Div= duse+dsys+didl;
didl= *cpu_idl;
diow= *cpu_iow;
Div= duse+dsys+didl+diow;
divo2= Div/2UL;
printf(format,
running,blocked,swapped,
running,blocked,r_swapp+d_swapp,
kb_swap_used,kb_main_free,
a_option?kb_inactive:kb_main_buffers,
a_option?kb_active:kb_main_cached,
@ -226,28 +206,212 @@ void old_format(void) {
(unsigned)( (*ctxt * hz + divo2) / Div ),
(unsigned)( (100*duse + divo2) / Div ),
(unsigned)( (100*dsys + divo2) / Div ),
(unsigned)( (100*didl + divo2) / Div )
(unsigned)( (100*(didl+diow) + divo2) / Div )
);
for(i=1;i<num_updates;i++) { /* \\\\\\\\\\\\\\\\\\\\ main loop ////////////////// */
sleep(sleep_time);
if (moreheaders && ((i%height)==0)) showheader();
if (moreheaders && ((i%height)==0)) old_header();
tog= !tog;
getrunners(&running,&blocked,&swapped);
getrunners(&running,&blocked,&r_swapp,&d_swapp);
meminfo();
getstat(cpu_use+tog,cpu_nic+tog,cpu_sys+tog,cpu_idl+tog,cpu_iow+tog,
pgpgin+tog,pgpgout+tog,pswpin+tog,pswpout+tog,
inter+tog,ticks+tog,ctxt+tog);
duse= cpu_use[tog]-cpu_use[!tog] + cpu_nic[tog]-cpu_nic[!tog];
dsys= cpu_sys[tog]-cpu_sys[!tog];
didl= cpu_idl[tog]-cpu_idl[!tog] + cpu_iow[tog]-cpu_iow[!tog];
didl= cpu_idl[tog]-cpu_idl[!tog];
diow= cpu_iow[tog]-cpu_iow[!tog];
/* idle can run backwards for a moment -- kernel "feature" */
if(cpu_idl[tog]<cpu_idl[!tog]) didl=0;
Div= duse+dsys+didl;
if(debt){
didl = (int)didl + debt;
debt = 0;
}
if( (int)didl < 0 ){
debt = (int)didl;
didl = 0;
}
Div= duse+dsys+didl+diow;
divo2= Div/2UL;
printf(format,
running,blocked,swapped,
running,blocked,r_swapp+d_swapp,
kb_swap_used,kb_main_free,
a_option?kb_inactive:kb_main_buffers,
a_option?kb_inactive:kb_main_cached,
(unsigned)( ( (pswpin [tog] - pswpin [!tog])*kb_per_page+sleep_half )/sleep_time ),
(unsigned)( ( (pswpout[tog] - pswpout[!tog])*kb_per_page+sleep_half )/sleep_time ),
(unsigned)( ( pgpgin [tog] - pgpgin [!tog] +sleep_half )/sleep_time ),
(unsigned)( ( pgpgout[tog] - pgpgout[!tog] +sleep_half )/sleep_time ),
(unsigned)( ( inter [tog] - inter [!tog] +sleep_half )/sleep_time ),
(unsigned)( ( ctxt [tog] - ctxt [!tog] +sleep_half )/sleep_time ),
(unsigned)( (100* duse +divo2)/Div ),
(unsigned)( (100* dsys +divo2)/Div ),
(unsigned)( (100*(didl+diow)+divo2)/Div )
);
}
}
//////////////////////////////////////////////////////////////////////////////////////
// produce: " 6 ", "123 ", "123k ", etc.
static int format_1024(unsigned long long val64, char *dst){
unsigned oldval;
const char suffix[] = " kmgtpe";
unsigned level = 0;
unsigned val32;
if(val64 < 1000){ // special case to avoid "6.0 " when plain " 6 " would do
val32 = val64;
return sprintf(dst,"%3u ",val32);
}
while(val64 > 0xffffffffull){
level++;
val64 /= 1024;
}
val32 = val64;
while(val32 > 999){
level++;
oldval = val32;
val32 /= 1024;
}
if(val32 < 10){
unsigned fract = (oldval % 1024) * 10 / 1024;
return sprintf(dst, "%u.%u%c ", val32, fract, suffix[level]);
}
return sprintf(dst, "%3u%c ", val32, suffix[level]);
}
// produce: " 6 ", "123 ", "123k ", etc.
static int format_1000(unsigned long long val64, char *dst){
unsigned oldval;
const char suffix[] = " kmgtpe";
unsigned level = 0;
unsigned val32;
if(val64 < 1000){ // special case to avoid "6.0 " when plain " 6 " would do
val32 = val64;
return sprintf(dst,"%3u ",val32);
}
while(val64 > 0xffffffffull){
level++;
val64 /= 1000;
}
val32 = val64;
while(val32 > 999){
level++;
oldval = val32;
val32 /= 1000;
}
if(val32 < 10){
unsigned fract = (oldval % 1000) / 100;
return sprintf(dst, "%u.%u%c ", val32, fract, suffix[level]);
}
return sprintf(dst, "%3u%c ", val32, suffix[level]);
}
/*
procs -----------memory---------- --swap- ----io--- ---system--- ---cpu---
r b swpd free buff cache si so bi bo in cs us sy id wa
*/
static void new_header(void){
printf("%5s%28s%10s%12s%11s%12s\n",
"procs","memory","swap","io","system","cpu");
printf("%2s %2s %2s %6s %6s %6s %6s %4s %4s %5s %5s %4s %5s %2s %2s %2s %2s\n",
"r","b","w","swpd","free",
a_option?"inact":"buff", a_option?"active":"cache",
"si","so","bi","bo",
"in","cs","us","sy","id","wa");
}
static void new_format(void) {
const char format[]="%2u %2u %6u %6u %6u %6u %4u %4u %5u %5u %4u %5u %2u %2u %2u %2u\n";
unsigned int tog=0; /* toggle switch for cleaner code */
unsigned int i;
unsigned int hz = Hertz;
unsigned int running,blocked,r_swapp,d_swapp;
jiff cpu_use[2], cpu_nic[2], cpu_sys[2], cpu_idl[2], cpu_iow[2];
jiff duse,dsys,didl,diow,Div,divo2;
unsigned int pgpgin[2], pgpgout[2], pswpin[2], pswpout[2];
unsigned int inter[2],ticks[2],ctxt[2];
unsigned int sleep_half;
unsigned int kb_per_page = sysconf(_SC_PAGESIZE) / 1024;
int debt = 0; // handle idle ticks running backwards
sleep_half=(sleep_time/2);
old_header();
getrunners(&running,&blocked,&r_swapp,&d_swapp);
meminfo();
getstat(cpu_use,cpu_nic,cpu_sys,cpu_idl,cpu_iow,
pgpgin,pgpgout,pswpin,pswpout,
inter,ticks,ctxt);
duse= *cpu_use + *cpu_nic;
dsys= *cpu_sys;
didl= *cpu_idl;
diow= *cpu_iow;
Div= duse+dsys+didl+diow;
divo2= Div/2UL;
printf(format,
running+r_swapp, blocked+d_swapp,
kb_swap_used, kb_main_free,
a_option?kb_inactive:kb_main_buffers,
a_option?kb_active:kb_main_cached,
(unsigned)( (*pswpin * kb_per_page * hz + divo2) / Div ),
(unsigned)( (*pswpout * kb_per_page * hz + divo2) / Div ),
(unsigned)( (*pgpgin * hz + divo2) / Div ),
(unsigned)( (*pgpgout * hz + divo2) / Div ),
(unsigned)( (*inter * hz + divo2) / Div ),
(unsigned)( (*ctxt * hz + divo2) / Div ),
(unsigned)( (100*duse + divo2) / Div ),
(unsigned)( (100*dsys + divo2) / Div ),
(unsigned)( (100*didl + divo2) / Div ),
(unsigned)( (100*diow + divo2) / Div )
);
for(i=1;i<num_updates;i++) { /* \\\\\\\\\\\\\\\\\\\\ main loop ////////////////// */
sleep(sleep_time);
if (moreheaders && ((i%height)==0)) old_header();
tog= !tog;
getrunners(&running,&blocked,&r_swapp,&d_swapp);
meminfo();
getstat(cpu_use+tog,cpu_nic+tog,cpu_sys+tog,cpu_idl+tog,cpu_iow+tog,
pgpgin+tog,pgpgout+tog,pswpin+tog,pswpout+tog,
inter+tog,ticks+tog,ctxt+tog);
duse= cpu_use[tog]-cpu_use[!tog] + cpu_nic[tog]-cpu_nic[!tog];
dsys= cpu_sys[tog]-cpu_sys[!tog];
didl= cpu_idl[tog]-cpu_idl[!tog];
diow= cpu_iow[tog]-cpu_iow[!tog];
/* idle can run backwards for a moment -- kernel "feature" */
if(debt){
didl = (int)didl + debt;
debt = 0;
}
if( (int)didl < 0 ){
debt = (int)didl;
didl = 0;
}
Div= duse+dsys+didl+diow;
divo2= Div/2UL;
printf(format,
running+r_swapp, blocked+d_swapp,
kb_swap_used,kb_main_free,
a_option?kb_inactive:kb_main_buffers,
a_option?kb_inactive:kb_main_cached,
@ -259,14 +423,26 @@ void old_format(void) {
(unsigned)( ( ctxt [tog] - ctxt [!tog] +sleep_half )/sleep_time ),
(unsigned)( (100*duse+divo2)/Div ),
(unsigned)( (100*dsys+divo2)/Div ),
(unsigned)( (100*didl+divo2)/Div )
(unsigned)( (100*didl+divo2)/Div ),
(unsigned)( (100*diow+divo2)/Div )
);
}
exit(EXIT_SUCCESS);
}
//////////////////////////////////////////////////////////////////////////////////////
static int winhi(void) {
struct winsize win;
int rows = 24;
if (ioctl(1, TIOCGWINSZ, &win) != -1 && win.ws_row > 0)
rows = win.ws_row;
return rows;
}
int main(int argc, char *argv[]) {
argc=0; /* redefined as number of integer arguments */
for (argv++;*argv;argv++) {