[JIRA] (OVIRT-1756) configure jenkins.ovirt.org to G1 garbage collector

Sunday, 12 November 2017

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     [
https://ovirt-jira.atlassian.net/browse/OVIRT-1756?page=com.atlassian.jir...
]

Barak Korren reassigned OVIRT-1756:
-----------------------------------

    Assignee: Evgheni Dereveanchin  (was: infra)

...
 configure jenkins.ovirt.org to G1 garbage collector
 ---------------------------------------------------

                 Key: OVIRT-1756
                 URL: https://ovirt-jira.atlassian.net/browse/OVIRT-1756
             Project: oVirt - virtualization made easy
          Issue Type: Improvement
          Components: oVirt CI
            Reporter: rgolanbb
            Assignee: Evgheni Dereveanchin

 I noticed jenkins process cpu consumption going over 100% and stalling the
 web handlers. The io wait is not a problem nor mem.
 What I suspect is going on is tons of GC and GC pressure given that 12GB
 heap and fairly nice amount of users and requests.
 What we can do is to configure the gc logging to see if that is really GC
 pauses really and to move to using the G1 garbage collector.
 See this post from cloudbees on the move to G1 collector

https://www.cloudbees.com/blog/joining-big-leagues-tuning-jenkins-gc-resp...

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<html><body>
<pre>[
https://ovirt-jira.atlassian.net/browse/OVIRT-1756?page=com.atlassian.jir...
]</pre>
<h3>Barak Korren reassigned OVIRT-1756:</h3>
<pre>Assignee: Evgheni Dereveanchin  (was: infra)</pre>
<blockquote><h3>configure jenkins.ovirt.org to G1 garbage
collector</h3>
<pre>     Key: OVIRT-1756
     URL: https://ovirt-jira.atlassian.net/browse/OVIRT-1756
 Project: oVirt - virtualization made easy
         Issue Type: Improvement
         Components: oVirt CI
Reporter: rgolanbb
Assignee: Evgheni Dereveanchin</pre>
<p>I noticed jenkins process cpu consumption going over 100% and stalling the web
handlers. The io wait is not a problem nor mem. What I suspect is going on is tons of GC
and GC pressure given that 12GB heap and fairly nice amount of users and requests. What we
can do is to configure the gc logging to see if that is really GC pauses really and to
move to using the G1 garbage collector. See this post from cloudbees on the move to G1
collector <a
href="https://www.cloudbees.com/blog/joining-big-leagues-tuning-jenk...
<p>&mdash; This message was sent by Atlassian Jira
(v1001.0.0-SNAPSHOT#100070)</p>

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