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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 /sleekxmpp/stanza/rootstanza.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 'sleekxmpp/stanza/rootstanza.py')
| -rw-r--r-- | sleekxmpp/stanza/rootstanza.py | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/sleekxmpp/stanza/rootstanza.py b/sleekxmpp/stanza/rootstanza.py index 470a1225..2ac47d8b 100644 --- a/sleekxmpp/stanza/rootstanza.py +++ b/sleekxmpp/stanza/rootstanza.py @@ -80,8 +80,7 @@ class RootStanza(StanzaBase): self['error']['type'] = 'cancel' self.send() # log the error - log.exception('Error handling {%s}%s stanza' % - (self.namespace, self.name)) + log.exception('Error handling {%s}%s stanza' , self.namespace, self.name) # Finally raise the exception to a global exception handler self.stream.exception(e) |