Last modified: 2010-05-15 15:29:35 UTC

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Bug 237 - Recentchanges purges cause lock wait timeout
Recentchanges purges cause lock wait timeout
Product: MediaWiki
Classification: Unclassified
Page editing (Other open bugs)
All All
: Normal normal with 1 vote (vote)
: ---
Assigned To: Nobody - You can work on this!
Depends on:
  Show dependency treegraph
Reported: 2004-08-28 02:37 UTC by Jamesday
Modified: 2010-05-15 15:29 UTC (History)
1 user (show)

See Also:
Web browser: ---
Mobile Platform: ---
Assignee Huggle Beta Tester: ---


Description Jamesday 2004-08-28 02:37:24 UTC
I've observed the periodic deletes from recentchanges taking in excess of 200
seconds at only moderately busy times and lock wait timeouts have been reported
for en Wikipedia with recentchanges specified as the affected table. Perhaps
increasing their frequency would help, by reducing the work per update.

As an interim step I've increased the Wikimedia lock wait timeout value.
Comment 1 Zigger 2005-06-06 19:14:41 UTC
(Set MW Version to 1.3.1 based on report date and release history.)
AFAICT, 1.4 & 1.5 still do this on average every 1000 edits, so with constant
editing, an average of 1000 rows would be deleted each time along with the index
changes.  v1.4 added another index.

Is this still an issue?  Increasing the frequency seems like an easy change to
make, and 1000x seems like a very high factor for removing the overhead.
Comment 2 Antoine "hashar" Musso (WMF) 2005-08-24 20:53:17 UTC
Closing bug as the frequency got increased + we now run
the biggest mediawiki site (en.wikipedia) under 1.6 ;)

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