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| author | Vijay Pandurangan <vijayp@vijayp.ca> | 2011-11-20 03:30:44 +0800 |
|---|---|---|
| committer | Lance Stout <lancestout@gmail.com> | 2011-11-20 03:39:05 +0800 |
| commit | deb52ad3502a94f91ef5400bf5b7605b8e151f50 (patch) | |
| tree | 879d9e076ed037bf5056514a8e470e7d471f26ca /examples/ping.py | |
| parent | 1baf139ca4be0c05a6a845becf18412b213a3c02 (diff) | |
| download | slixmpp-deb52ad3502a94f91ef5400bf5b7605b8e151f50.tar.gz slixmpp-deb52ad3502a94f91ef5400bf5b7605b8e151f50.tar.bz2 slixmpp-deb52ad3502a94f91ef5400bf5b7605b8e151f50.tar.xz slixmpp-deb52ad3502a94f91ef5400bf5b7605b8e151f50.zip | |
This change stops sleekxmpp from spending huge amounts of time unnecessarily computing logging data that may never be used. This is a HUGE performance improvement; in some of my test runs, unnecessary string creation was accounting for > 60% of all CPU time.
Note that using % in a string will _always_ perform the sting substitutions, because the strings are constructed before the function is called. So log.debug('%s' % expensiveoperation()) will take about the same CPU time whether or not the logging level is DEBUG or INFO. if you use , no substitutions are performed unless the string is actually logged
Diffstat (limited to 'examples/ping.py')
| -rwxr-xr-x | examples/ping.py | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/examples/ping.py b/examples/ping.py index 68772e6b..fcf75a04 100755 --- a/examples/ping.py +++ b/examples/ping.py @@ -72,7 +72,7 @@ class PingTest(sleekxmpp.ClientXMPP): self.disconnect() sys.exit(1) else: - logging.info("Success! RTT: %s" % str(result)) + logging.info("Success! RTT: %s" , str(result)) self.disconnect() |