[jboss-jira] [JBoss JIRA] Updated: (JGRP-520) OOM with RpcDispatcher

[Bela Ban (JIRA)]

     [ http://jira.jboss.com/jira/browse/JGRP-520?page=all ]

Bela Ban updated JGRP-520:
--------------------------

    Priority: Minor  (was: Critical)

actually, minor (nobody's using deadlock detection with the concurrent stack)

> OOM with RpcDispatcher
> ----------------------
>
>                 Key: JGRP-520
>                 URL: http://jira.jboss.com/jira/browse/JGRP-520
>             Project: JGroups
>          Issue Type: Bug
>         Environment: 1.5.0_10-b03;Sun Microsystems Inc.;mixed mode, sharing;Windows;32 bit JVM
> Windows Server 2003 Standard x64
>            Reporter: Bela Ban
>         Assigned To: Bela Ban
>            Priority: Minor
>             Fix For: 2.5
>
>         Attachments: SimpleClusterManager.java, testcfg.xml, TestJGroups.java
>
>
> [from Patrick Eger]
> Attempting to isolate the problem, I ran into a (probably unrelated)
> other OutOfMemoryError problem with JGroups 1.5b2. Got an
> OutOfMemoryError after ~3 minutes of running the attached
> TestJGroups.java, 3 instances in parallel. Also attached is the stack
> config and a couple YJP views of the HPROF dump as generated by
> -XX:+HeapDumpOnOutOfMemoryError.
> The test is looping single-threaded, calling a remote method via
> RpcDispatcher every 100 ms which returns a few KB String. Looks like all
> the memory is retained instances of org.jgroups.stack.IpAddress
> (~1,000,000 for a ~3 minute run (seems like a lot?)), held by
> pbcast.NAKACK.sent_msgs. I have the HPROF dump if you need, its about 15
> megs zipped so I assumed would not make it through the mail filters.
> Is this a real OOME or is it a stack configuration/tuning thing? I have
> used the default UDP config, but with increased thread_pool and
> oob_thread_pool sizes.
> Options
> -----------------------------------------
> -agentlib:yjpagent
> -server
> -Xmx64m
> -XX:+HeapDumpOnOutOfMemoryError
> -Dcom.sun.management.jmxremote
> -Dpeer_cluster_manager.XXXTestClusterXXX.jgroups_config=C:\tmp\testcfg.x
> ml

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