I have a situation where my server CPU utilization starts increasing and stays on for a very long time (haven't measured exactly how long, i have see it high for about 1-2 hrs)
JIRA becomes unresponsive and everything seems to fall back to normal upon restart
I took thread dumps(20 every 3 seconds ) during the hign CPU time and i get the below stack for all the long running threads
I am not able to figureout, why high CPU utilization stays on for a very long time and comes back to normal after restart.
Most of these long running threads originate from , JIRA Ajile, gadgets, Script Runner other JQLs
at sun.misc.Unsafe.getByte(Native Method) at java.nio.DirectByteBuffer.get(Unknown Source) at java.nio.ByteBuffer.get(Unknown Source) at java.nio.DirectByteBuffer.get(Unknown Source) at org.apache.lucene.store.MMapDirectory$MMapIndexInput.readBytes(MMapDirectory.java:289) at org.apache.lucene.index.TermBuffer.read(TermBuffer.java:82) at org.apache.lucene.index.SegmentTermEnum.next(SegmentTermEnum.java:131) at com.atlassian.jira.issue.search.parameters.lucene.sort.JiraLuceneFieldFinder.getMatches(JiraLuceneFieldFinder.java:232) at com.atlassian.jira.issue.search.parameters.lucene.sort.JiraLuceneFieldFinder.getUniqueMatches(JiraLuceneFieldFinder.java:184) at com.atlassian.jira.issue.statistics.util.OneDimensionalObjectHitCollector.setNextReader(OneDimensionalObjectHitCollector.java:92) at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:531) at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:320) at com.atlassian.jira.index.DelegateSearcher.search(DelegateSearcher.java:153)
thanks in advanace.
That didn't work..
I have almost 90 threads with the below stack(cut off the remaining stack), which is using up most (> 80%)of the CPU, all in runnable state
We have a powerful server and in spite of that almost every day, the CPU load increases and JIRA becomes unresponsive. Therad dumps reveal that threads piling up on Lucene search. We are on JIRA 6.0.6. I see that you faced this problem back in May. Are you still facing this? If not, did you try any fixes?
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