Antoni Segura Puimedon has uploaded a new change for review.
Change subject: Add profiling decorator utility.
......................................................................
Add profiling decorator utility.
This decorator is meant to be used while testing performance. It
leaves a temp file with the profiling info and logs the name
of that file.
The profiling information is binary so that it can be analyzed
easily from a python session like so:
import pstats
stats = pstats.Stats('/tmp/func_namexxxx')
stats.sort_stats('cumulative').print_stats()
which gives an output like:
Thu Jun 27 10:35:22 2013 /tmp/addNetworkMep9tp
24586 function calls (24392 primitive calls) in 0.774 CPU seconds
Ordered by: cumulative time
ncalls tottime percall cumtime percall filename:lineno(function)
1 0.000 0.000 0.774 0.774
/usr/share/vdsm/configNetwork.py:151(addNetwork)
1 0.000 0.000 0.688 0.688
/usr/share/vdsm/netmodels.py:128(configure)
1 0.000 0.000 0.688 0.688
/usr/share/vdsm/netconf/ifcfg.py:68(configureBridge)
6 0.000 0.000 0.586 0.098
/usr/lib64/python2.6/site-packages/vdsm/utils.py:447(execCmd)
6 0.000 0.000 0.575 0.096
/usr/lib64/python2.6/site-packages/vdsm/utils.py:434(communicate)
24 0.000 0.000 0.573 0.024
/usr/lib64/python2.6/io.py:752(close)
36 0.000 0.000 0.573 0.016
/usr/lib64/python2.6/site-packages/vdsm/utils.py:254(close)
7 0.000 0.000 0.573 0.082
/usr/lib64/python2.6/site-packages/vdsm/utils.py:358(_processStreams)
7 0.000 0.000 0.573 0.082
/usr/lib64/python2.6/site-packages/vdsm/utils.py:214(NoIntrPoll)
7 0.573 0.082 0.573 0.082 {method 'poll' of 'select.epoll'
objects}
1 0.000 0.000 0.497 0.497
/usr/share/vdsm/netmodels.py:91(configure)
1 0.000 0.000 0.497 0.497
/usr/share/vdsm/netconf/ifcfg.py:79(configureVlan)
1 0.000 0.000 0.470 0.470
/usr/share/vdsm/netmodels.py:161(configure)
1 0.000 0.000 0.470 0.470
/usr/share/vdsm/netconf/ifcfg.py:87(configureBond)
Change-Id: I540d0200f488a6de6b5c43e7439e8eb352ea456b
Signed-off-by: Antoni S. Puimedon <[email protected]>
---
M lib/vdsm/utils.py
1 file changed, 20 insertions(+), 2 deletions(-)
git pull ssh://gerrit.ovirt.org:29418/vdsm refs/changes/75/16175/1
diff --git a/lib/vdsm/utils.py b/lib/vdsm/utils.py
index 4847a68..1ce2b91 100644
--- a/lib/vdsm/utils.py
+++ b/lib/vdsm/utils.py
@@ -29,21 +29,23 @@
from collections import namedtuple
from SimpleXMLRPCServer import SimpleXMLRPCServer
from StringIO import StringIO
+from tempfile import NamedTemporaryFile
from weakref import proxy
-import SocketServer
+import cProfile
import errno
import fcntl
import functools
import glob
import io
import logging
-import sys
import os
import pwd
import select
import signal
+import SocketServer
import stat
import subprocess
+import sys
import threading
import time
@@ -898,3 +900,19 @@
logging.error("Panic: %s", msg, exc_info=True)
os.killpg(0, 9)
sys.exit(-3)
+
+
+def profile(func):
+ func_name = func.__name__
+
+ def profiled_execution(*args, **kwargs):
+ logging.info('profiling method %s' % func_name)
+ profiler = cProfile.Profile()
+ ret = profiler.runcall(func, *args, **kwargs)
+ prof_file = NamedTemporaryFile(mode='w', prefix=func_name,
+ delete=False)
+ profiler.dump_stats(prof_file.name)
+ logging.info('profiled method %s and dumped results to %s' %
+ (func_name, prof_file.name))
+ return ret
+ return profiled_execution
--
To view, visit http://gerrit.ovirt.org/16175
To unsubscribe, visit http://gerrit.ovirt.org/settings
Gerrit-MessageType: newchange
Gerrit-Change-Id: I540d0200f488a6de6b5c43e7439e8eb352ea456b
Gerrit-PatchSet: 1
Gerrit-Project: vdsm
Gerrit-Branch: master
Gerrit-Owner: Antoni Segura Puimedon <[email protected]>
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