[Buildbot] #3654: Really stark performance regression at startup and later on

Buildbot trac trac at buildbot.net
Sun Dec 11 21:49:39 UTC 2016


#3654: Really stark performance regression at startup and later on
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Reporter:  kayhayen  |       Owner:
    Type:  defect    |      Status:  new
Priority:  major     |   Milestone:  undecided
 Version:  0.9.1     |  Resolution:
Keywords:            |
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Comment (by kayhayen):

 Amazing stuff. Unfortunately adding an attachment didn't work, but you can
 download from here: [http://nuitka.net/volatile/profile.json]

 For this I stopped the build slave running on the same machine. I checked
 with top and htop, and iotop that nothing was going on. No IO, no CPU
 users. I clicked on "Builders" to get the list of all builders, and it
 took really long. I think 4-5 seconds before anything appeared, and then
 slowly one by one.

 The actual recording of this is clicking on the link and not seeing
 anything at all, even after a longer time. There were max 2 build slaves
 connected at the time.

 The performance problem also exists if nothing is running during start up
 already. I am seeing 100% CPU usage in the graph. Very confusing to me.
 Also load numbers are too high. I figure I don't know what they mean.

 Thanks,
 Kay

--
Ticket URL: <http://trac.buildbot.net/ticket/3654#comment:2>
Buildbot <http://buildbot.net/>
Buildbot: build/test automation


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