[Bamboo-Users] high cpu load

[Sean Rhea]

What OS are you using?  Can you attach you .cfg file?

Bamboo uses VERY little CPU on PlanetLab.

Sean


On Dec 12, 2007 3:23 AM, Olaf Görlitz <goerlitz at uni-koblenz.de> wrote:
> Hi all,
>
> I'm experiencing a constantly high cpu load of 100% when running bamboo.
> I tried to pinpoint the cause with Java's build in profiler (-Xprof) and
> got following output for Thread-1 which is the ASyncCoreImpl instance.
>
> Flat profile of 198.82 secs (9964 total ticks): Thread-1
>
>   Interpreted + native   Method
>  99.3%     0  +  9878    sun.nio.ch.PollArrayWrapper.poll0
>   0.3%     0  +    31    com.sleepycat.db.db_javaJNI.DbEnv_open0
>   0.2%     0  +    15    com.sleepycat.db.db_javaJNI.initialize
>   0.0%     0  +     3    com.sleepycat.db.db_javaJNI.DbTxn_commit0
>   0.0%     0  +     3    bamboo.dht.ReturnToClient.<init>
>   0.0%     0  +     2    java.lang.Thread.start0
>   0.0%     0  +     2    java.lang.Class.forName0
>  ...
>  99.9%     5  +  9936    Total interpreted
>
> Does anyone know why sun.nio.ch.PollArrayWrapper.poll0 is called so
> often? How can I reduce the cpu load?
>
> Regards,
> Olaf
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