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| author | Vijay Pandurangan <vijayp@vijayp.ca> | 2011-11-19 11:30:44 -0800 |
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| committer | Vijay Pandurangan <vijayp@vijayp.ca> | 2011-11-19 11:30:44 -0800 |
| commit | 6f3cc77bb52349b1b88d0dd6edd2ba77141bc7f6 (patch) | |
| tree | ca30a84c518db108faa78a97983aee9a6feccbd2 /docs/_static/header.png | |
| parent | 7945b3e7389516ebd3267dbba83e7564813c3012 (diff) | |
| download | slixmpp-6f3cc77bb52349b1b88d0dd6edd2ba77141bc7f6.tar.gz slixmpp-6f3cc77bb52349b1b88d0dd6edd2ba77141bc7f6.tar.bz2 slixmpp-6f3cc77bb52349b1b88d0dd6edd2ba77141bc7f6.tar.xz slixmpp-6f3cc77bb52349b1b88d0dd6edd2ba77141bc7f6.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
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