G1:long remark pauses
bengt.rutisson at oracle.com
Fri May 16 10:58:34 UTC 2014
It looks like the application is using a lot of Reference objects. The
time spent in remark is dominated by reference processing. See the
attached graph generated from the log file you sent.
You can try to see if adding -XX:+ParallelRefProcEnabled improves the
If the customer is interested in updating their application they might
want to see if they can reduce the number of java.lang.ref.Reference
objects they use.
On 2014-05-16 10:26, Thomas Viessmann wrote:
> I've been tuning a Java 7u51, Solaris 10, T4 system with 24G heap.
> My customer is not very happy with the remark pauses of up to 2 seconds.
> -XX:ParallelGCThreads=48 turned out to be the optimum. Here is the
> log file
> which contains the java args at the top:
> Any idea to drive the remark stop times further down?
> Thanks and Regards
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