From cf709844d8a8fa21c59772d1a069ae0efa15e981 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Sun, 10 Dec 2006 02:19:56 -0800 Subject: [PATCH] [PATCH] io-accounting: add to getdelays 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 Cc: Shailabh Nagar Cc: Balbir Singh Cc: Chris Sturtivant Cc: Tony Ernst Cc: Guillaume Thouvenin Cc: David Wright Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/accounting/getdelays.c | 20 +++++++++++++++++--- 1 file changed, 17 insertions(+), 3 deletions(-) diff --git a/Documentation/accounting/getdelays.c b/Documentation/accounting/getdelays.c index 93dd04f86a27..e9126e794ed7 100644 --- a/Documentation/accounting/getdelays.c +++ b/Documentation/accounting/getdelays.c @@ -48,6 +48,7 @@ int rcvbufsz; char name[100]; int dbg; int print_delays; +int print_io_accounting; __u64 stime, utime; #define PRINTF(fmt, arg...) { \ @@ -195,6 +196,15 @@ void print_delayacct(struct taskstats *t) "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 c, rc, rep_len, aggr_len, len2, cmd_type; @@ -217,7 +227,7 @@ int main(int argc, char *argv[]) struct msgtemplate msg; 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) break; @@ -226,6 +236,10 @@ int main(int argc, char *argv[]) printf("print delayacct stats ON\n"); print_delays = 1; break; + case 'i': + printf("printing IO accounting\n"); + print_io_accounting = 1; + break; case 'w': strncpy(logfile, optarg, MAX_FILENAME); printf("write to file %s\n", logfile); @@ -247,14 +261,12 @@ int main(int argc, char *argv[]) if (!tid) err(1, "Invalid tgid\n"); cmd_type = TASKSTATS_CMD_ATTR_TGID; - print_delays = 1; break; case 'p': tid = atoi(optarg); if (!tid) err(1, "Invalid pid\n"); cmd_type = TASKSTATS_CMD_ATTR_PID; - print_delays = 1; break; case 'v': printf("debug on\n"); @@ -367,6 +379,8 @@ int main(int argc, char *argv[]) count++; if (print_delays) print_delayacct((struct taskstats *) NLA_DATA(na)); + if (print_io_accounting) + print_ioacct((struct taskstats *) NLA_DATA(na)); if (fd) { if (write(fd, NLA_DATA(na), na->nla_len) < 0) { err(1,"write error\n"); -- GitLab