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[PATCH] io-accounting: add to getdelays

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Wire up the IO accounting into getdelays.c.

Usage:

To display I/O stats for each exitting task:

vmm:/home/akpm> ./getdelays -m0,1,2,3 -i -l
cpumask 0 maskset 1
printing IO accounting
listen forever
rm: read=8192, write=0, cancelled_write=0
cvs: read=733184, write=4255744, cancelled_write=4096
make: read=217088, write=0, cancelled_write=0
cc1: read=4263936, write=12288, cancelled_write=0
as: read=811008, write=8192, cancelled_write=0
gcc: read=323584, write=0, cancelled_write=12288
cc1: read=0, write=8192, cancelled_write=0
as: read=4096, write=4096, cancelled_write=0
gcc: read=16384, write=0, cancelled_write=4096
as: read=4096, write=4096, cancelled_write=0
gcc: read=16384, write=0, cancelled_write=8192
ld: read=1011712, write=16384, cancelled_write=0
collect2: read=626688, write=0, cancelled_write=0
gcc: read=204800, write=0, cancelled_write=0
cc1: read=0, write=8192, cancelled_write=0
as: read=4096, write=4096, cancelled_write=0
gcc: read=16384, write=0, cancelled_write=8192
ld: read=8192, write=16384, cancelled_write=0
collect2: read=49152, write=0, cancelled_write=0
gcc: read=0, write=0, cancelled_write=0
cc1: read=0, write=4096, cancelled_write=0
ld: read=4096, write=12288, cancelled_write=0
collect2: read=49152, write=0, cancelled_write=0
gcc: read=0, write=0, cancelled_write=0

To display I/O stats for a particular presently-running task:

vmm:/home/akpm> ./getdelays -i -p $(pidof crond)
printing IO accounting
crond: read=61440, write=0, cancelled_write=0

Cc: Jay Lan <jlan@sgi.com>
Cc: Shailabh Nagar <nagar@watson.ibm.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Chris Sturtivant <csturtiv@sgi.com>
Cc: Tony Ernst <tee@sgi.com>
Cc: Guillaume Thouvenin <guillaume.thouvenin@bull.net>
Cc: David Wright <daw@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Andrew Morton 2006-12-10 02:19:56 -08:00 • committed by Linus Torvalds
parent d2f7bf1346
commit cf709844d8
1 changed files with 17 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
Documentation/accounting/getdelays.c
View file

@ -48,6 +48,7 @@ int rcvbufsz;
char name[100]; char name[100];
int dbg; int dbg;
int print_delays; int print_delays;
int print_io_accounting;
__u64 stime, utime; __u64 stime, utime;
#define PRINTF(fmt, arg...) { \ #define PRINTF(fmt, arg...) { \
@ -195,6 +196,15 @@ void print_delayacct(struct taskstats *t)
"count", "delay total", t->swapin_count, t->swapin_delay_total); "count", "delay total", t->swapin_count, t->swapin_delay_total);
} }
void print_ioacct(struct taskstats *t)
{
printf("%s: read=%llu, write=%llu, cancelled_write=%llu\n",
t->ac_comm,
(unsigned long long)t->read_bytes,
(unsigned long long)t->write_bytes,
(unsigned long long)t->cancelled_write_bytes);
}
int main(int argc, char *argv[]) int main(int argc, char *argv[])
{ {
int c, rc, rep_len, aggr_len, len2, cmd_type; int c, rc, rep_len, aggr_len, len2, cmd_type;
@ -217,7 +227,7 @@ int main(int argc, char *argv[])
struct msgtemplate msg; struct msgtemplate msg;
while (1) { while (1) {
c = getopt(argc, argv, "dw:r:m:t:p:v:l"); c = getopt(argc, argv, "diw:r:m:t:p:v:l");
if (c < 0) if (c < 0)
break; break;
@ -226,6 +236,10 @@ int main(int argc, char *argv[])
printf("print delayacct stats ON\n"); printf("print delayacct stats ON\n");
print_delays = 1; print_delays = 1;
break; break;
case 'i':
printf("printing IO accounting\n");
print_io_accounting = 1;
break;
case 'w': case 'w':
strncpy(logfile, optarg, MAX_FILENAME); strncpy(logfile, optarg, MAX_FILENAME);
printf("write to file %s\n", logfile); printf("write to file %s\n", logfile);
@ -247,14 +261,12 @@ int main(int argc, char *argv[])
if (!tid) if (!tid)
err(1, "Invalid tgid\n"); err(1, "Invalid tgid\n");
cmd_type = TASKSTATS_CMD_ATTR_TGID; cmd_type = TASKSTATS_CMD_ATTR_TGID;
print_delays = 1;
break; break;
case 'p': case 'p':
tid = atoi(optarg); tid = atoi(optarg);
if (!tid) if (!tid)
err(1, "Invalid pid\n"); err(1, "Invalid pid\n");
cmd_type = TASKSTATS_CMD_ATTR_PID; cmd_type = TASKSTATS_CMD_ATTR_PID;
print_delays = 1;
break; break;
case 'v': case 'v':
printf("debug on\n"); printf("debug on\n");
@ -367,6 +379,8 @@ int main(int argc, char *argv[])
count++; count++;
if (print_delays) if (print_delays)
print_delayacct((struct taskstats *) NLA_DATA(na)); print_delayacct((struct taskstats *) NLA_DATA(na));
if (print_io_accounting)
print_ioacct((struct taskstats *) NLA_DATA(na));
if (fd) { if (fd) {
if (write(fd, NLA_DATA(na), na->nla_len) < 0) { if (write(fd, NLA_DATA(na), na->nla_len) < 0) {
err(1,"write error\n"); err(1,"write error\n");