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From Stack <st...@duboce.net>
Subject Re: load balancing considerations
Date Wed, 11 Aug 2010 05:29:58 GMT
On Tue, Aug 10, 2010 at 9:52 PM, Ted Yu <yuzhihong@gmail.com> wrote:
> Here are GC-related parameters:
> /usr/java/jdk1.6/bin/java -Xmx4000m -XX:+HeapDumpOnOutOfMemoryError
> -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode
>

You have > 2 CPUs per machine I take it?  You could probably drop the
conservative XX:+CMSIncrementalMode.

> The heap dump is big:
> -rw------- 1 hadoop users 4146551927 Aug 11 03:59 java_pid26972.hprof
>
> Do you have ftp server where I can upload it ?
>

Not really.  I was hoping you could put a compressed version under an
http server somewhere that I could pull from.  You might as well
include the GC log while you are at it.

Thanks Ted,

St.Ack

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