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:
pool: www process manager: dynamic start time: 08/Dec/2016:07:59:44 -0800 start since: 1041140 accepted conn: 10654252 listen queue: 0 max listen queue: 0 listen queue len: 0 idle processes: 7 active processes: 12 total processes: 19 max active processes: 40 max children reached: 8 slow requests: 0 pid: 7087 state: Running start time: 20/Dec/2016:08:36:30 -0800 start since: 2134 requests: 38 request duration: 2088600826 request method: GET request URI: /index.php?title=Chef&oldid=363770 content length: 0 user: - script: /var/www/sites/gw2w-en/index.php last request cpu: 0.00 last request memory: 0 Currently php.ini has max_execution_time set to 60s. I realize I could also try setting the pool's request_terminate_timeout value to ensure processes don't stay hung like this, but that's basically kill -9 and I'd rather try to resolve the underlying issue and improve the performance so these old revisions can actually load in a reasonable amount of time. This is on up-to-date Ubuntu 16.04.3 servers, with MediaWiki 1.27.1, Apache 2.4.18, and PHP 7.0.8. Also for what it's worth, the referrers for these page requests have pretty much always been http://www.bing.com/bingbot.htm, but since this is easily reproducible, I'd rather fix the problem so actual users aren't forced to wait several minutes for old revision page loads. Any suggestions? Thanks, Justin _______________________________________________ MediaWiki-l mailing list To unsubscribe, go to: https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
