https://bugzilla.wikimedia.org/show_bug.cgi?id=66225
Bug ID: 66225
Summary: Special:RunJobs recursively calling Special:RunJobs
again (?)
Product: MediaWiki
Version: 1.24-git
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: Unprioritized
Component: JobQueue
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Web browser: ---
Mobile Platform: ---
We had a problem where the WMES wiki was painfully slow. The access log showing
thousands of Special%3ARunJobs entries (NOT one per request).
$ grep -c Special%3ARunJobs access.log.2014-06-03
63116
$ grep -c -v Special%3ARunJobs access.log.2014-06-03
472
(that would be 133 RunJobs per request‼)
Changing $wgJobRunRate to 0 from the default of 1 “fixed” the slowness.
From the external appearance, it looks like each Special:RunJobs then called
another Special:RunJobs with an infinite recursion until the time limit.
There are 4 jobs with old dates in the queue, but even if they are not
completable, they shouldn't have produced so many POSTs.
At the point $wgJobRunRate was disabled, the wiki was running 00f91912c64
(master), but it had been ‘broken’ for weeks.
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