Hi,
No, I wasn't even aware of it. Searching my systems for wikidiff only turns up
includes/diff/WikiDiff3.php in the MW code. I can try testing wikidiff2 by installing the
php-wikidiff2 package and seeing if that makes a difference.
Thanks,
Justin
-----Original Message-----
From: MediaWiki-l [mailto:mediawiki-l-bounces@lists.wikimedia.org] On Behalf Of Legoktm
Sent: Tuesday, December 20, 2016 11:01 AM
To: mediawiki-l(a)lists.wikimedia.org
Subject: Re: [MediaWiki-l] PHP-FPM processes hanging on some large diff page revisions
Hi,
On 12/20/2016 09:28 AM, Justin Lloyd wrote:
Hi all,
Ever since my recent upgrades to MediaWiki 1.27, which included upgrading the operating
system and changing from Apache + mod_php to Apache + PHP-FPM, a few times I've seen
PHP-FPM processes hanging on a certain kind of old page revision (often these revisions
are years old). Specifically, it appears to be old page revisions where there was a huge
change to the page size, e.g. a 64k page having 61k added to it. Here's an example
excerpt from the FPM status page with the pool info and one of the hung processes:
Do you have the wikidiff2 PHP extension[1] installed? If you're having performance
problems with diffs, switching to the C-based implementation should help. Diffs of that
size are going to be large regardless, so I'm not too surprised it's having
issues...
I'm not familiar with php-fpm timeouts to give advice on that, sorry.
[1]
https://www.mediawiki.org/wiki/Extension:Wikidiff2
-- Legoktm
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