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From "Ryan Moquin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KARAF-2340) Stock Karaf 2.3.1, Cellar 2.3.0, CPU go to constant 20%
Date Sat, 25 May 2013 15:49:20 GMT

    [ https://issues.apache.org/jira/browse/KARAF-2340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13667117#comment-13667117
] 

Ryan Moquin commented on KARAF-2340:
------------------------------------

I rushed and put the one link in the one issue that should have been here, so let's ignore
eventadmin, I haven't seen that with synchronous=true.  As I mentioned in the other jira,
which I would attribute to the same thing, the synchronous not being true, I had found the
following link:

https://github.com/hazelcast/hazelcast/issues/81

I tried the suggestion regarding fixing the "famous epoll bug" and now my cpu usage when I
install cellar appears to sit at 0.3%, so I'm thinking that should be added to karaf, I don't
know if there are any downsides, but it certainly seems to fix the 20% issue I has having.
 Memory usage seems to be being handled much better as well, it's spiking up and down much
more frequently and consistently, not jumping wildly all over.  I'm attaching the files I
changed in Karaf 2.3.1 with the necessary changes to add that property and which seem to have
made a huge difference.
                
> Stock Karaf 2.3.1, Cellar 2.3.0, CPU go to constant 20%
> -------------------------------------------------------
>
>                 Key: KARAF-2340
>                 URL: https://issues.apache.org/jira/browse/KARAF-2340
>             Project: Karaf
>          Issue Type: Bug
>          Components: karaf-feature
>    Affects Versions: 2.3.1
>         Environment: Windows 7 JDK7_17
>            Reporter: Ryan Moquin
>            Assignee: Jean-Baptiste Onofré
>         Attachments: console_screen.JPG, karaf-2.3.1-cellar-2.3.0-installing-eventadmin.JPG,
karaf-2.3.1-cellar-2.3.0-profile.nps
>
>
> I've been working on a demo for several weeks to promote Karaf and Cellar.  Even thought
Karaf 3.0.0 seems to work great, the addition of Cellar just isn't ready yet.  When I tried
Karaf 2.3.2-SNASHOT with Cellar 2.3.0, my CPU went to 25% and hazelcase 5 seemed to be going
a bit crazy.  So I moved to Karaf 2.3.1 and Celler 2.3.0.  I was able to install cellar but
when I finally typed the correct comment to install the admin, my cpu utilization went to
25% and the features:install command never returned.
> Attached are some screenshots of sampling from jvisualvm (the profiler seems to through
karaf into fits).  I'm a little lost on how to get Karad and Cellar running correctly together.

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