On 24.03.2012, 20:16 Asher wrote:

> There was also a the release of a majorly changed MobileFrontend earlier
> that day / prior night that line up with the first spike.  The MF rewrite
> doesn't perform well - MobileFrontend::DOMParse avg time went from 15ms to
> 150ms (~500ms at 99th) and it wouldn't be impossible for it to also impact
> non-mobile performance.

> DB, ES, and memcache latency look steady, so I suspect it's all application
> side.

Thanks for the heads up, Asher. I've committed thorough profiling in
<https://gerrit.wikimedia.org/r/3696>, would appreciate if someone
deployed it.


-- 
Best regards,
  Max Semenik ([[User:MaxSem]])


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