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procps/vmstat.c
albert 360e6533c9 misc
2003-08-16 21:15:53 +00:00

665 lines
20 KiB
C
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// old: "Copyright 1994 by Henry Ware <al172@yfn.ysu.edu>. Copyleft same year."
// most code copyright 2002 Albert Cahalan
//
// 27/05/2003 (Fabian Frederick) : Add unit conversion + interface
// Export proc/stat access to libproc
// Adapt vmstat helpfile
// 31/05/2003 (Fabian) : Add diskstat support (/libproc)
// June 2003 (Fabian) : -S <x> -s & -s -S <x> patch
// June 2003 (Fabian) : -Adding diskstat against 3.1.9, slabinfo
// -patching 'header' in disk & slab
// July 2003 (Fabian) : -Adding disk partition output
// -Adding disk table
// -Syncing help / usage
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <assert.h>
#include <fcntl.h>
#include <limits.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/dir.h>
#include <dirent.h>
#include "proc/sysinfo.h"
#include "proc/version.h"
static unsigned long dataUnit=1024;
static char szDataUnit [16];
#define UNIT_B 1
#define UNIT_k 1000
#define UNIT_K 1024
#define UNIT_m 1000000
#define UNIT_M 1048576
#define VMSTAT 0
#define DISKSTAT 0x00000001
#define VMSUMSTAT 0x00000002
#define SLABSTAT 0x00000004
#define PARTITIONSTAT 0x00000008
#define DISKSUMSTAT 0x00000010
static int statMode=VMSTAT;
#define FALSE 0
#define TRUE 1
static int a_option; /* "-a" means "show active/inactive" */
static unsigned sleep_time = 1;
static unsigned long num_updates;
static unsigned int height; // window height
static unsigned int moreheaders=TRUE;
/////////////////////////////////////////////////////////////////////////
static void usage(void) NORETURN;
static void usage(void) {
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");
fprintf(stderr," -d prints disk statistics\n");
fprintf(stderr," -D prints disk table\n");
fprintf(stderr," -p prints disk partition statistics\n");
fprintf(stderr," -s prints vm table\n");
fprintf(stderr," -m prints slabinfo\n");
fprintf(stderr," -S unit size\n");
fprintf(stderr," delay is the delay between updates in seconds. \n");
fprintf(stderr," unit size k:1000 K:1024 m:1000000 M:1048576 (default is K)\n");
fprintf(stderr," count is the number of updates.\n");
exit(EXIT_FAILURE);
}
/////////////////////////////////////////////////////////////////////////////
#if 0
// produce: " 6 ", "123 ", "123k ", etc.
static int format_1024(unsigned long long val64, char *restrict 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 *restrict 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]);
}
#endif
////////////////////////////////////////////////////////////////////////////
static void new_header(void){
printf("procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----\n");
printf(
"%2s %2s %6s %6s %6s %6s %4s %4s %5s %5s %4s %5s %2s %2s %2s %2s\n",
"r","b",
"swpd", "free", a_option?"inact":"buff", a_option?"active":"cache",
"si","so",
"bi","bo",
"in","cs",
"us","sy","id","wa"
);
}
////////////////////////////////////////////////////////////////////////////
static void diskheader(void){
printf("disk ----------reads------------ -----------writes----------- -------IO-------\n");
printf("%3s %6s %6s %6s %6s %6s %6s %6s %6s %6s %6s\n", " ", "total", "merged","sectors","ms","total","merged","sectors","ms","cur","s");
}
////////////////////////////////////////////////////////////////////////////
static void diskpartition_header(const char *partition_name){
printf("%-10s %10s %10s %10s %10s\n",partition_name, "reads ", "read sectors", "writes ", "requested writes");
}
////////////////////////////////////////////////////////////////////////////
static void slabheader(void){
printf("%-24s %6s %6s %6s %6s\n","Cache","Num", "Total", "Size", "Pages");
}
////////////////////////////////////////////////////////////////////////////
static unsigned long unitConvert(unsigned int size){
float cvSize;
cvSize=(float)size/dataUnit*((statMode==SLABSTAT)?1:1024);
return ((unsigned long) cvSize);
}
////////////////////////////////////////////////////////////////////////////
static void new_format(void) {
const char format[]="%2u %2u %6lu %6lu %6lu %6lu %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,dummy_1,dummy_2;
jiff cpu_use[2], cpu_nic[2], cpu_sys[2], cpu_idl[2], cpu_iow[2];
jiff duse, dsys, didl, diow, Div, divo2;
unsigned long pgpgin[2], pgpgout[2], pswpin[2], pswpout[2];
unsigned int intr[2], ctxt[2];
unsigned int sleep_half;
unsigned long kb_per_page = sysconf(_SC_PAGESIZE) / 1024ul;
int debt = 0; // handle idle ticks running backwards
sleep_half=(sleep_time/2);
new_header();
meminfo();
getstat(cpu_use,cpu_nic,cpu_sys,cpu_idl,cpu_iow,
pgpgin,pgpgout,pswpin,pswpout,
intr,ctxt,
&running,&blocked,
&dummy_1, &dummy_2);
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, blocked,
unitConvert(kb_swap_used), unitConvert(kb_main_free),
unitConvert(a_option?kb_inactive:kb_main_buffers),
unitConvert(a_option?kb_active:kb_main_cached),
(unsigned)( (*pswpin * unitConvert(kb_per_page) * hz + divo2) / Div ),
(unsigned)( (*pswpout * unitConvert(kb_per_page) * hz + divo2) / Div ),
(unsigned)( (*pgpgin * hz + divo2) / Div ),
(unsigned)( (*pgpgout * hz + divo2) / Div ),
(unsigned)( (*intr * 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)) new_header();
tog= !tog;
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,
intr+tog,ctxt+tog,
&running,&blocked,
&dummy_1,&dummy_2);
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, blocked,
unitConvert(kb_swap_used),unitConvert(kb_main_free),
unitConvert(a_option?kb_inactive:kb_main_buffers),
unitConvert(a_option?kb_active:kb_main_cached),
(unsigned)( ( (pswpin [tog] - pswpin [!tog])*unitConvert(kb_per_page)+sleep_half )/sleep_time ), /*si*/
(unsigned)( ( (pswpout[tog] - pswpout[!tog])*unitConvert(kb_per_page)+sleep_half )/sleep_time ), /*so*/
(unsigned)( ( pgpgin [tog] - pgpgin [!tog] +sleep_half )/sleep_time ), /*bi*/
(unsigned)( ( pgpgout[tog] - pgpgout[!tog] +sleep_half )/sleep_time ), /*bo*/
(unsigned)( ( intr [tog] - intr [!tog] +sleep_half )/sleep_time ), /*in*/
(unsigned)( ( ctxt [tog] - ctxt [!tog] +sleep_half )/sleep_time ), /*cs*/
(unsigned)( (100*duse+divo2)/Div ), /*us*/
(unsigned)( (100*dsys+divo2)/Div ), /*sy*/
(unsigned)( (100*didl+divo2)/Div ), /*id*/
(unsigned)( (100*diow+divo2)/Div ) /*wa*/
);
}
}
////////////////////////////////////////////////////////////////////////////
static int diskpartition_format(const char* partition_name){
FILE *fDiskstat;
struct disk_stat *disks;
struct partition_stat *partitions, *current_partition=NULL;
unsigned long ndisks, j, k, npartitions;
const char format[] = "%20u %10llu %10u %10u\n";
fDiskstat=fopen("/proc/diskstats","rb");
if(!fDiskstat){
fprintf(stderr, "Your kernel doesn't support diskstat. (2.5.70 or above required)\n");
exit(0);
}
fclose(fDiskstat);
ndisks=getdiskstat(&disks,&partitions);
npartitions=getpartitions_num(disks, ndisks);
for(k=0; k<npartitions; k++){
if(!strcmp(partition_name, partitions[k].partition_name)){
current_partition=&(partitions[k]);
}
}
if(!current_partition){
return -1;
}
diskpartition_header(partition_name);
printf (format,
current_partition->reads,current_partition->reads_sectors,current_partition->writes,current_partition->requested_writes);
fflush(stdout);
free(disks);
free(partitions);
for(j=1; j<num_updates; j++){
if (moreheaders && ((j%height)==0)) diskpartition_header(partition_name);
sleep(sleep_time);
ndisks=getdiskstat(&disks,&partitions);
npartitions=getpartitions_num(disks, ndisks);
current_partition=NULL;
for(k=0; k<npartitions; k++){
if(!strcmp(partition_name, partitions[k].partition_name)){
current_partition=&(partitions[k]);
}
}
if(!current_partition){
return -1;
}
printf (format,
current_partition->reads,current_partition->reads_sectors,current_partition->writes,current_partition->requested_writes);
fflush(stdout);
free(disks);
free(partitions);
}
return 0;
}
////////////////////////////////////////////////////////////////////////////
static void diskformat(void){
FILE *fDiskstat;
struct disk_stat *disks;
struct partition_stat *partitions;
unsigned long ndisks,i,j,k;
const char format[]="%-3s %6u %6u %6llu %6u %6u %6u %6llu %6u %6u %6u\n";
if ((fDiskstat=fopen("/proc/diskstats", "rb"))){
fclose(fDiskstat);
ndisks=getdiskstat(&disks,&partitions);
for(k=0; k<ndisks; k++){
if (moreheaders && ((k%height)==0)) diskheader();
printf(format,
disks[k].disk_name,disks[k].reads, disks[k].merged_reads,disks[k].reads_sectors, disks[k].milli_reading, disks[k].writes, disks[k].merged_writes, disks[k].written_sectors,disks[k].milli_writing, disks[k].inprogress_IO?disks[k].inprogress_IO/1000:0, disks[k].milli_spent_IO?disks[k].milli_spent_IO/1000:0/*, disks[i].weighted_milli_spent_IO/1000*/);
fflush(stdout);
}
free(disks);
free(partitions);
for(j=1; j<num_updates; j++){
sleep(sleep_time);
ndisks=getdiskstat(&disks,&partitions);
for(i=0; i<ndisks; i++,k++){
if (moreheaders && ((k%height)==0)) diskheader();
printf(format,
disks[i].disk_name,
disks[i].reads,
disks[i].merged_reads,
disks[i].reads_sectors,
disks[i].milli_reading,
disks[i].writes,
disks[i].merged_writes,
disks[i].written_sectors,
disks[i].milli_writing,
disks[i].inprogress_IO?disks[i].inprogress_IO/1000:0,
disks[i].milli_spent_IO?disks[i].milli_spent_IO/1000:0/*,
disks[i].weighted_milli_spent_IO/1000*/
);
fflush(stdout);
}
free(disks);
free(partitions);
}
}else{
fprintf(stderr, "Your kernel doesn't support diskstat (2.5.70 or above required)");
exit(0);
}
}
////////////////////////////////////////////////////////////////////////////
static void slabformat (void){
FILE *fSlab;
struct slab_cache *slabs;
unsigned long nSlab,i,j,k;
const char format[]="%-24s %6u %6u %6u %6u\n";
fSlab=fopen("/proc/slabinfo", "rb");
if(!fSlab){
fprintf(stderr, "Your kernel doesn't support slabinfo");
return;
}
nSlab = getslabinfo(&slabs);
for(k=0; k<nSlab; k++){
if (moreheaders && ((k%height)==0)) slabheader();
printf(format,
slabs[k].name,
slabs[k].active_objs,
slabs[k].num_objs,
slabs[k].objsize,
slabs[k].objperslab
);
}
free(slabs);
for(j=1,k=1; j<num_updates; j++) {
sleep(sleep_time);
nSlab = getslabinfo(&slabs);
for(i=0; i<nSlab; i++,k++){
if (moreheaders && ((k%height)==0)) slabheader();
printf(format,
slabs[i].name,
slabs[i].active_objs,
slabs[i].num_objs,
slabs[i].objsize,
slabs[i].objperslab
);
}
free(slabs);
}
}
////////////////////////////////////////////////////////////////////////////
static void disksum_format(void) {
FILE *fDiskstat;
struct disk_stat *disks;
struct partition_stat *partitions;
int ndisks, i;
unsigned long reads, merged_reads, read_sectors, milli_reading, writes,
merged_writes, written_sectors, milli_writing, inprogress_IO,
milli_spent_IO, weighted_milli_spent_IO;
reads=merged_reads=read_sectors=milli_reading=writes=merged_writes= \
written_sectors=milli_writing=inprogress_IO=milli_spent_IO= \
weighted_milli_spent_IO=0;
if ((fDiskstat=fopen("/proc/diskstats", "rb"))){
fclose(fDiskstat);
ndisks=getdiskstat(&disks, &partitions);
printf("%13d disks \n", ndisks);
printf("%13d partitions \n", getpartitions_num(disks, ndisks));
for(i=0; i<ndisks; i++){
reads+=disks[i].reads;
merged_reads+=disks[i].merged_reads;
read_sectors+=disks[i].reads_sectors;
milli_reading+=disks[i].milli_reading;
writes+=disks[i].writes;
merged_writes+=disks[i].merged_writes;
written_sectors+=disks[i].written_sectors;
milli_writing+=disks[i].milli_writing;
inprogress_IO+=disks[i].inprogress_IO?disks[i].inprogress_IO/1000:0;
milli_spent_IO+=disks[i].milli_spent_IO?disks[i].milli_spent_IO/1000:0;
}
printf("%13lu total reads\n",reads);
printf("%13lu merged reads\n",merged_reads);
printf("%13lu read sectors\n",read_sectors);
printf("%13lu milli reading\n",milli_reading);
printf("%13lu writes\n",writes);
printf("%13lu merged writes\n",merged_writes);
printf("%13lu written sectors\n",written_sectors);
printf("%13lu milli writing\n",milli_writing);
printf("%13lu inprogress IO\n",inprogress_IO);
printf("%13lu milli spent IO\n",milli_spent_IO);
free(disks);
free(partitions);
}
}
////////////////////////////////////////////////////////////////////////////
static void sum_format(void) {
unsigned int running, blocked, btime, processes;
jiff cpu_use, cpu_nic, cpu_sys, cpu_idl, cpu_iow;
unsigned long pgpgin, pgpgout, pswpin, pswpout;
unsigned int intr, ctxt;
meminfo();
getstat(&cpu_use, &cpu_nic, &cpu_sys, &cpu_idl, &cpu_iow,
&pgpgin, &pgpgout, &pswpin, &pswpout,
&intr, &ctxt,
&running, &blocked,
&btime, &processes);
printf("%13lu %s total memory\n", unitConvert(kb_main_total),szDataUnit);
printf("%13lu %s used memory\n", unitConvert(kb_main_used),szDataUnit);
printf("%13lu %s active memory\n", unitConvert(kb_active),szDataUnit);
printf("%13lu %s inactive memory\n", unitConvert(kb_inactive),szDataUnit);
printf("%13lu %s free memory\n", unitConvert(kb_main_free),szDataUnit);
printf("%13lu %s buffer memory\n", unitConvert(kb_main_buffers),szDataUnit);
printf("%13lu %s swap cache\n", unitConvert(kb_main_cached),szDataUnit);
printf("%13lu %s total swap\n", unitConvert(kb_swap_total),szDataUnit);
printf("%13lu %s used swap\n", unitConvert(kb_swap_used),szDataUnit);
printf("%13lu %s free swap\n", unitConvert(kb_swap_free),szDataUnit);
printf("%13Lu non-nice user cpu ticks\n", cpu_use);
printf("%13Lu nice user cpu ticks\n", cpu_nic);
printf("%13Lu system cpu ticks\n", cpu_sys);
printf("%13Lu idle cpu ticks\n", cpu_idl);
printf("%13Lu IO-wait cpu ticks\n", cpu_iow);
printf("%13lu pages paged in\n", pgpgin);
printf("%13lu pages paged out\n", pgpgout);
printf("%13lu pages swapped in\n", pswpin);
printf("%13lu pages swapped out\n", pswpout);
printf("%13u interrupts\n", intr);
printf("%13u CPU context switches\n", ctxt);
printf("%13u boot time\n", btime);
printf("%13u forks\n", processes);
}
////////////////////////////////////////////////////////////////////////////
static void fork_format(void) {
unsigned int running, blocked, btime, processes;
jiff cpu_use, cpu_nic, cpu_sys, cpu_idl, cpu_iow;
unsigned long pgpgin, pgpgout, pswpin, pswpout;
unsigned int intr, ctxt;
getstat(&cpu_use, &cpu_nic, &cpu_sys, &cpu_idl, &cpu_iow,
&pgpgin, &pgpgout, &pswpin, &pswpout,
&intr, &ctxt,
&running, &blocked,
&btime, &processes);
printf("%13u forks\n", processes);
}
////////////////////////////////////////////////////////////////////////////
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[]) {
char partition[16];
argc=0; /* redefined as number of integer arguments */
for (argv++;*argv;argv++) {
if ('-' ==(**argv)) {
switch (*(++(*argv))) {
case 'V':
display_version();
exit(0);
case 'd':
statMode |= DISKSTAT;
break;
case 'a':
/* active/inactive mode */
a_option=1;
break;
case 'f':
// FIXME: check for conflicting args
fork_format();
exit(0);
case 'm':
statMode |= SLABSTAT;
break;
case 'D':
statMode |= DISKSUMSTAT;
break;
case 'n':
/* print only one header */
moreheaders=FALSE;
break;
case 'p':
statMode |= PARTITIONSTAT;
if (argv[1]){
++argv;
sprintf(partition, "%s", *argv);
}else{fprintf(stderr, "-p requires an argument\n");
exit(EXIT_FAILURE);
}
break;
case 'S':
if (argv[1]){
++argv;
if (!strcmp(*argv, "k")) dataUnit=UNIT_k;
else if (!strcmp(*argv, "K")) dataUnit=UNIT_K;
else if (!strcmp(*argv, "m")) dataUnit=UNIT_m;
else if (!strcmp(*argv, "M")) dataUnit=UNIT_M;
else {fprintf(stderr, "-S requires k, K, m or M (default is kb)\n");
exit(EXIT_FAILURE);
}
strcpy(szDataUnit, *argv);
}else {fprintf(stderr, "-S requires an argument\n");
exit(EXIT_FAILURE);
}
break;
case 's':
statMode |= VMSUMSTAT;
break;
default:
/* no other aguments defined yet. */
usage();
}
}else{
argc++;
switch (argc) {
case 1:
if ((sleep_time = atoi(*argv)) == 0)
usage();
num_updates = ULONG_MAX;
break;
case 2:
num_updates = atol(*argv);
break;
default:
usage();
} /* switch */
}
}
if (moreheaders) {
int tmp=winhi()-3;
height=((tmp>0)?tmp:22);
}
setlinebuf(stdout);
switch(statMode){
case(VMSTAT): new_format();
break;
case(VMSUMSTAT): sum_format();
break;
case(DISKSTAT): diskformat();
break;
case(PARTITIONSTAT): if(diskpartition_format(partition)==-1)
printf("Partition was not found\n");
break;
case(SLABSTAT): slabformat();
break;
case(DISKSUMSTAT): disksum_format();
break;
default: usage();
break;
}
return 0;
}
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