OpenVZ Forum


Home » Mailing lists » Devel » [PATCH 0/7] Profiling sleep times (v3)
[PATCH 6/7] perf: add scripts for profiling sleep times (v2) [message #44259 is a reply to message #44255] Mon, 28 November 2011 09:03 Go to previous messageGo to previous message
Andrew Vagin is currently offline  Andrew Vagin
Messages: 28
Registered: November 2011
Junior Member
E.g.:
# perf script record -- sched:sched_stat_sleep -- ./foo
# perf script report sched-stat
or
# perf script record -- -e sched:sched_stat_sleep

v2: Add ability to record events for a defined process. It executes a small
bash script, then executes perf with filtering by pid and then a bash script
executes a target process.

Signed-off-by: Andrew Vagin <avagin@openvz.org>
---
tools/perf/scripts/python/bin/sched-stat-record | 65 +++++++++++++++++++++++
tools/perf/scripts/python/bin/sched-stat-report | 5 ++
2 files changed, 70 insertions(+), 0 deletions(-)
create mode 100644 tools/perf/scripts/python/bin/sched-stat-record
create mode 100644 tools/perf/scripts/python/bin/sched-stat-report

diff --git a/tools/perf/scripts/python/bin/sched-stat-record b/tools/perf/scripts/python/bin/sched-stat-record
new file mode 100644
index 0000000..5e0bd97
--- /dev/null
+++ b/tools/perf/scripts/python/bin/sched-stat-record
@@ -0,0 +1,65 @@
+#!/bin/bash
+# perf script record -- sched:sched_stat_[smth] -- CMD
+# perf script record -- -e sched:sched_stat_[smth]
+#
+set -o monitor
+
+usage()
+{
+ echo "Usage:"
+ echo " perf script record -- sched:sched_stat_[smth] -- CMD"
+ echo " perf script record -- [PERF OPTS] -e sched:sched_stat_[smth]"
+ exit 1;
+}
+
+declare -a opt
+declare -a cmd
+f=0;
+for i in "${@:2}"; do
+ if [ "$i" == "--" ]; then
+ f=1
+ continue
+ fi
+ if [ $f -eq 1 ]; then
+ cmd[${#cmd[*]}]="$i"
+ else
+ opt[${#opt[*]}]="$i"
+ fi
+done
+
+if [[ "${opt[@]}" != *sched_stat_* ]]; then
+ usage;
+fi
+
+if [ ${#cmd[@]} -eq 0 ]; then
+ if [ ${#opt[@]} -eq 0 ]; then
+ usage;
+ fi
+ exec perf record -agP \
+ -e sched:sched_switch \
+ --filter "prev_state == 1 || prev_state == 2" \
+ "${opt[@]}"
+fi
+
+if [ ${#opt[@]} -ne 1 ]; then
+ usage;
+fi
+
+# Wait until a target process is stopped.
+bash -c 'kill -STOP $$; exec "$@"' -- "${cmd[@]}" &
+pid=$!
+wait %1
+[ $? -eq 147 ] || exit 1;
+
+perf record -agP \
+ -e sched:sched_switch \
+ --filter "prev_pid == $pid && prev_state == 1 || prev_state == 2" \
+ -e sched:sched_process_exit -e "${opt[@]}" --filter "pid == $pid" &
+pid_perf=$!
+kill -CONT %1
+while :; do
+ wait %1
+ [ $? -eq 127 ] && break;
+done
+kill -INT %2
+wait %2
diff --git a/tools/perf/scripts/python/bin/sched-stat-report b/tools/perf/scripts/python/bin/sched-stat-report
new file mode 100644
index 0000000..e5114ce
--- /dev/null
+++ b/tools/perf/scripts/python/bin/sched-stat-report
@@ -0,0 +1,5 @@
+#!/bin/bash
+# description: profiling sleep times
+perf inject -s -i perf.data -o perf.data.d || exit
+perf report -i perf.data.d || exit
+unlink perf.data.d
--
1.7.1

Report message to a moderator

[Message index]
 
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Previous Topic: [GIT PULL 0/2] perf/urgent fixes
Next Topic: Re: [GIT PULL 0/2] perf/urgent fixes
Goto Forum:
  

[ Syndicate this forum (XML) ] [ RSS ] [ PDF ]

Current Time: Mon Apr 20 18:14:25 GMT 2026

Total time taken to generate the page: 0.14339 seconds
Powered by FUDforum Powered by Virtuozzo Containers