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Date: Fri, 28 Sep 2007 11:11:44 +0100
From: sebb <sebbaz@gmail.com>
To: "JMeter Users List" <jmeter-user@jakarta.apache.org>
Subject: Re: OutOfMemoryError with stacktrace.
In-Reply-To: <E5D178BFB0356B48A48B8330B29037210342AFA6@syd1exc04.CE.CORP>
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References: <E5D178BFB0356B48A48B8330B29037210342AFA6@syd1exc04.CE.CORP>

On 28/09/2007, Sonam Chauhan <sonam.chauhan@ce.com.au> wrote:
> Hello -
>
>
>
> I'm currently running JMeter 2.1.1 with Sun JVM 1.6 on RHEL ES 4 Linux
> on VMWare ESX server, and am struggling with out of memory errors
> running JMeter.
>

Might be a garbage collection issue?

Perhaps you could enable GC tracing on the JVMs, and compare the two systems.

>
> The same tests running on a Windows XP box (Sun JVM 1.5) don't throw out
> of memory errors.

What about JVM 1.6 on XP?

>
> Here's 'top' output of the process :
>
>  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
>
>
> 24733 metatest  25   0  977m 150m 6320 S 99.2  4.0  16:20.65 java
>
>
>
> Normally I get errors with no stacktrace:
>
> java.lang.OutOfMemoryError: Java heap space
>
>
>
> However, upping the JVM max. heap memory to 1.5 GB, gave of memory error
> with a stacktrace (see end of email). Is this significant or useful?
>

I don't think so.

It just shows that the JVM ran out of memory trying to log a message.

This was just "the straw that broke the camel's back", The rest of the
straw was loaded previously by other parts of the test.

>
> Kind regards,
>
> Sonam Chauhan
>
> --
>
> Corporate Express Australia Ltd.
>
> Phone: +61-2-93350725, Email: sonam.chauhan@ce.com.au
>
>
>
>
>
>
>
> STACKTRACE
>
>
>
> java.lang.OutOfMemoryError: Java heap space
>
>        at java.util.Arrays.copyOf(Arrays.java:2882)
>
>        at
> java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.jav
> a:
>
> 100)
>
>        at
> java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:390)
>
>        at java.lang.StringBuffer.append(StringBuffer.java:224)
>
>        at java.io.StringWriter.write(StringWriter.java:95)
>
>        at java.io.PrintWriter.write(PrintWriter.java:412)
>
>        at java.io.PrintWriter.write(PrintWriter.java:429)
>
>        at java.io.PrintWriter.print(PrintWriter.java:559)
>
>        at java.io.PrintWriter.println(PrintWriter.java:695)
>
>        at java.lang.Throwable.printStackTrace(Throwable.java:512)
>
>        at
> org.apache.log.format.PatternFormatter.getStackTrace(PatternFormatter.ja
> va
>
> :638)
>
>        at
> org.apache.log.format.PatternFormatter.formatPatternRun(PatternFormatter
> .j
>
> ava:519)
>
>        at
> org.apache.log.format.PatternFormatter.format(PatternFormatter.java:493)
>
>        at
> org.apache.log.output.AbstractOutputTarget.format(AbstractOutputTarget.j
> av
>
> a:189)
>
>        at
> org.apache.log.output.AbstractOutputTarget.doProcessEvent(AbstractOutput
> Ta
>
> rget.java:148)
>
>        at
> org.apache.log.output.AbstractTarget.processEvent(AbstractTarget.java:14
> 5)
>
>        at org.apache.log.Logger.fireEvent(Logger.java:708)
>
>        at org.apache.log.Logger.output(Logger.java:683)
>
>        at org.apache.log.Logger.output(Logger.java:666)
>
>        at org.apache.log.Logger.error(Logger.java:267)
>
>        at
> org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:298)
>
>        at java.lang.Thread.run(Thread.java:619)
>
>

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