[users at bb.net] buildbot CPU usage

[Francesco Di Mizio]

I'd like to provide a bit more context.Right after restarting the master
and kicking off 10 builds CPU was at 110-120%. This made the UI unusable
and basically all the services were stuck, including the REST API.
After 3-4 minutes like this and WITH all the 10 builds still running the
CPU usage went down to 5%, stayed there for 5 minutes and all was smooth
and quick again. From then on it keps oscillating, I've seen spikes of 240%
:(





On Tue, Aug 2, 2016 at 4:12 PM, Francesco Di Mizio <
francescodimizio at gmail.com> wrote:

> Sometimes it goes up to 140%. I was not able to relate this with a
> particular builds condition - seems like it can happen any time and is not
> related to how many builds are going on.
>
> I usually realize the server got into this state because the web UI gets
> stuck. As soon as the CPU% goes back to normal values (2-3% most times) the
> web finishes loading just instantly.
>
> Any pointers as to what might be causing this? Only reason I can think of
> is too many people trying to access the web UI simultaniously - may I be
> right?
>
>
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