Hey everyone,

Sorry for resurrecting that thread, but are there any solutions for
this problem? It's basically killing our instance often.

best,
Andrew

On Wed, Aug 1, 2012 at 11:47 AM, Andrew Melo <andrew.m...@gmail.com> wrote:
> Oh, wow, I didn't notice, but jenkins has autopopulated a user for
> everyone that ever committed on the project. There's like 30 people,
> ~4000 commits, so I could see why that would take a while :)
>
> On Wed, Aug 1, 2012 at 11:42 AM, Andrew Melo <andrew.m...@gmail.com> wrote:
>> On Wed, Aug 1, 2012 at 11:37 AM, Slide <slide.o....@gmail.com> wrote:
>>> Can you gist your global config.xml and something from one of your
>>> jobs as well? Please remember to sanitize it.
>>
>> We actually keep it stored in SCM. https://github.com/dmwm/jenkins/
>>
>> And the following is the gist for the job we run each commit (didn't
>> make it in for some reason...)
>>
>> https://gist.github.com/3228599
>>
>>>
>>> On Wed, Aug 1, 2012 at 9:34 AM, Andrew Melo <andrew.m...@gmail.com> wrote:
>>>> On Wed, Aug 1, 2012 at 11:26 AM, Slide <slide.o....@gmail.com> wrote:
>>>>> No, because its only looking for the email address because it wants to
>>>>> send an email to that user.
>>>>
>>>> I don't know who's getting emailed. I don't remember setting it up for
>>>> anything, and we actually wrote some scripts that turn jenkins
>>>> success/failures into Github issues, so having jenkins also send
>>>> emails would be redundant.
>>>>
>>>> I don't supposed there's a global flag to disable email? (I don't see
>>>> one at "manage jenkins")
>>>>
>>>> -Andrew
>>>>>
>>>>> On Wed, Aug 1, 2012 at 9:24 AM, Andrew Melo <andrew.m...@gmail.com> wrote:
>>>>>> On Wed, Aug 1, 2012 at 11:22 AM, Slide <slide.o....@gmail.com> wrote:
>>>>>>> This is a huge issue with the email-ext plugin as well when it does
>>>>>>> email address resolution. Quite a number of people have complained
>>>>>>> about how long it takes. I have yet to come up with a good solution.
>>>>>>> The perforce plugin has a similar issue.
>>>>>>
>>>>>> If I just stick a dummy address in every user's profile, will that work?
>>>>>>
>>>>>>>
>>>>>>> slide
>>>>>>>
>>>>>>> On Wed, Aug 1, 2012 at 9:17 AM, Vojtech Juranek <vjura...@redhat.com> 
>>>>>>> wrote:
>>>>>>>> Looks like you it does search for user's email:
>>>>>>>> hudson.scm.SubversionMailAddressResolverImpl.findMailAddressFor
>>>>>>>> and spends time parsing changelogs:
>>>>>>>> hudson.scm.SubversionChangeLogParser.parse
>>>>>>>>
>>>>>>>> I guess you have quite large instance, otherwise this operation would 
>>>>>>>> be quite
>>>>>>>> fast.
>>>>>>>> If you have some job, which has set up option to send an email to devs 
>>>>>>>> who
>>>>>>>> broke the build, if the user hasn't specified an email, Jenkins tries 
>>>>>>>> to find it
>>>>>>>> e.g. in git or SVN changelogs and search all projects and builds so if 
>>>>>>>> you
>>>>>>>> have large instance with several dozen thousands of builds if can take 
>>>>>>>> pretty
>>>>>>>> long time.
>>>>>>>>
>>>>>>>> You can fix it by setting up correct email for the user.
>>>>>>>> If you have installed git plugin, make sure you have 1.1.16 (I hope it 
>>>>>>>> was
>>>>>>>> fixed in this version) or higher. Git plugin made this search even if 
>>>>>>>> the user
>>>>>>>> has set up email correctly
>>>>>>>>
>>>>>>>> On Wednesday 01 August 2012 10:56:43 Andrew Melo wrote:
>>>>>>>>> On Wed, Aug 1, 2012 at 10:36 AM, Vojtech Juranek <vjura...@redhat.com>
>>>>>>>> wrote:
>>>>>>>>> > On Wednesday 01 August 2012 10:07:15 Andrew Melo wrote:
>>>>>>>>> >> On Wed, Aug 1, 2012 at 9:48 AM, Vojtech Juranek 
>>>>>>>>> >> <vjura...@redhat.com>
>>>>>>>> wrote:
>>>>>>>>> >> > quick way how to look what the thread consuming CPU is doing is 
>>>>>>>>> >> > to do
>>>>>>>>> >> > thread dump (e.g. using jstack $PID) and use top with threads on 
>>>>>>>>> >> > (H
>>>>>>>>> >> > option) and then look up, see e.g.
>>>>>>>>> >> > http://code.nomad-labs.com/2010/11/18/identifying-which-java-thread-is-
>>>>>>>>> >> > consuming-most-cpu/
>>>>>>>>> >>
>>>>>>>>> >> I see. I apparently don't have jstack on this machine :/. Does it 
>>>>>>>>> >> only
>>>>>>>>> >> come with the JDK, or can I find it somewhere on the JRE? Once I 
>>>>>>>>> >> find
>>>>>>>>> >> the offending thread, should it be pretty obvious what it does?
>>>>>>>>> >
>>>>>>>>> > jstack is part of JDK
>>>>>>>>> >
>>>>>>>>> > you can see the stack trace via Jenkins UI navigating to
>>>>>>>>> > $JENKINS_URL/threadDump but not sure if your (or any) Jenkins 
>>>>>>>>> > version
>>>>>>>>> > provides thread IDs.
>>>>>>>>> >
>>>>>>>>> >
>>>>>>>>> > Once you identify the offending thread, it should be obvious what 
>>>>>>>>> > it does
>>>>>>>>> > (but it may not be obvious why it does what it does:-)
>>>>>>>>>
>>>>>>>>> Okay, I installed the jdk, and I looked some more.
>>>>>>>>>
>>>>>>>>> Using top, I see one jenkins thread taking the lionsshare of the time:
>>>>>>>>>
>>>>>>>>>   PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
>>>>>>>>> 24580 jenkins   25   0 3246m 743m  18m R 88.6 24.7 790:53.39 java
>>>>>>>>> 24591 jenkins   15   0 3246m 743m  18m S  0.0 24.7  40:14.51 java
>>>>>>>>> 25163 jenkins   15   0 3246m 743m  18m S  0.0 24.7  28:21.42 java
>>>>>>>>> 24601 jenkins   15   0 3246m 743m  18m S  0.0 24.7  27:24.95 java
>>>>>>>>> 24581 jenkins   15   0 3246m 743m  18m S  0.0 24.7  26:39.58 java
>>>>>>>>> 24589 jenkins   18   0 3246m 743m  18m S  0.2 24.7  24:41.60 java
>>>>>>>>> 24604 jenkins   15   0 3246m 743m  18m S  0.0 24.7  23:47.46 java
>>>>>>>>> 24603 jenkins   15   0 3246m 743m  18m S  0.6 24.7  17:05.23 java
>>>>>>>>> 24484 jenkins   15   0 3246m 743m  18m S  0.4 24.7  14:45.39 java
>>>>>>>>> 24612 jenkins   18   0 3246m 743m  18m S  0.0 24.7  11:50.45 java
>>>>>>>>> 24610 jenkins   15   0 3246m 743m  18m S  0.0 24.7  10:34.41 java
>>>>>>>>> 24564 jenkins   15   0 3246m 743m  18m S  0.0 24.7   8:56.60 java
>>>>>>>>> 24602 jenkins   15   0 3246m 743m  18m S  0.0 24.7   8:30.98 java
>>>>>>>>> 24565 jenkins   16   0 3246m 743m  18m S 11.5 24.7   8:22.85 java
>>>>>>>>> 24609 jenkins   15   0 3246m 743m  18m S  0.0 24.7   8:12.30 java
>>>>>>>>> 24582 jenkins   15   0 3246m 743m  18m S  0.6 24.7   3:48.67 java
>>>>>>>>> 24590 jenkins   15   0 3246m 743m  18m S  0.0 24.7   3:24.27 java
>>>>>>>>> 24579 jenkins   15   0 3246m 743m  18m S  0.0 24.7   3:22.16 java
>>>>>>>>> 24486 jenkins   15   0 3246m 743m  18m S  0.0 24.7   2:33.77 java
>>>>>>>>> 24973 jenkins   15   0 3246m 743m  18m S  0.0 24.7   2:18.32 java
>>>>>>>>> 24983 jenkins   15   0 3246m 743m  18m S  0.0 24.7   2:07.91 java
>>>>>>>>> 24838 jenkins   15   0 3246m 743m  18m S  0.0 24.7   1:38.35 java
>>>>>>>>> 24845 jenkins   15   0 3246m 743m  18m S  0.0 24.7   1:32.56 java
>>>>>>>>> 25037 jenkins   15   0 3246m 743m  18m S  0.0 24.7   1:16.63 java
>>>>>>>>> 25038 jenkins   15   0 3246m 743m  18m S  0.0 24.7   1:07.00 java
>>>>>>>>> 24491 jenkins   15   0 3246m 743m  18m S  0.0 24.7   1:05.38 java
>>>>>>>>> 24611 jenkins   15   0 3246m 743m  18m S  0.0 24.7   1:02.82 java
>>>>>>>>> 24488 jenkins   15   0 3246m 743m  18m S  0.0 24.7   1:00.30 java
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Then if I run jstack, I get the following backtrace:
>>>>>>>>>
>>>>>>>>> https://gist.github.com/3228105
>>>>>>>>>
>>>>>>>>> Does that look useful at all?
>>>>>>>>>
>>>>>>>>> Thanks,
>>>>>>>>> Andrew
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Website: http://earl-of-code.com
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> --
>>>>>> Andrew Melo
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Website: http://earl-of-code.com
>>>>
>>>>
>>>>
>>>> --
>>>> --
>>>> Andrew Melo
>>>
>>>
>>>
>>> --
>>> Website: http://earl-of-code.com
>>
>>
>>
>> --
>> --
>> Andrew Melo
>
>
>
> --
> --
> Andrew Melo



-- 
--
Andrew Melo

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