FYI. A performance regression was found and we rolled back all wikis to
1.25wmf14. Follow the bug mentioned for updates.
----- Forwarded message from Ori Livneh <ori(a)wikimedia.org> -----
Date: Wed, 4 Feb 2015 02:49:37 -0800
From: Ori Livneh <ori(a)wikimedia.org>
To: "Development and Operations engineers (WMF only)"
<engineering(a)lists.wikimedia.org>
Subject: [Engineering] wmf15 performance regression
Hello,
The roll-out of wmf15 to non-Wikipedias appears to have introduced a
significant performance regression, which registered as a 1-second increase
in median page load times across the cluster. The regression abated when I
rolled back <https://gerrit.wikimedia.org/r/#/c/188409/>.
http://i.imgur.com/2sPxYNg.png
http://i.imgur.com/NFbyOBu.png
There should be no MediaWiki deployments until this bug is isolated and
resolved.
Tracked in <https://phabricator.wikimedia.org/T88528>.
Ori
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