When opening a Performance Report page, Jenkins had no response.
I could see OutOfMemoryError at log.

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Performance: Parsing JMeter report file 2013080300201824tracking_access_ssperf.jtl
Performance: Parsing JMeter report file 2013080300201824tracking_access_ssperf.jtl
Performance: Parsing JMeter report file 2013113016145321tracking_access_ssperf.jtl
Performance: Parsing JMeter report file 2013113016145321tracking_access_ssperf.jtl
Performance: Parsing JMeter report file 2013113016145321tracking_access_ssperf.jtl
Performance: Parsing JMeter report file 2013113016145321tracking_access_ssperf.jtl
Performance: Parsing JMeter report file 2013113016145321tracking_access_ssperf.jtl
Performance: Parsing JMeter report file 2013113016145321tracking_access_ssperf.jtl
Exception in thread "RequestHandlerThread2" java.lang.OutOfMemoryError: Java heap space
at java.util.LinkedList.addBefore(LinkedList.java:795)
at java.util.LinkedList.add(LinkedList.java:215)
at winstone.BoundedExecutorService.execute(BoundedExecutorService.java:62)
at org.eclipse.jetty.util.thread.ExecutorThreadPool.dispatch(ExecutorThreadPool.java:126)
at org.eclipse.jetty.server.nio.SelectChannelConnector$ConnectorSelectorManager.dispatch(SelectChannelConnector.java:300)
at org.eclipse.jetty.io.nio.SelectorManager$SelectSet.doSelect(SelectorManager.java:708)
at org.eclipse.jetty.io.nio.SelectorManager$1.run(SelectorManager.java:290)
at winstone.BoundedExecutorService$1.run(BoundedExecutorService.java:77)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:679)
Dec 3, 2013 11:16:38 AM hudson.triggers.SafeTimerTask run
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Jenkins memory setting
JENKINS_JAVA_OPTIONS="-Djava.awt.headless=true -Dorg.apache.commons.jelly.tags.fmt.timeZone=Asia/Tokyo -Xmx2048m -XX:MaxPermSize=512m"

This job's workspase has 147MB.(about 12files*11MB)
I could not reproduce 1.7(other environment is same).