Tomcat uses 100% cpu after jira upgrade

Hi guys,

While using Jira 6 and so on, I've had no such problems, but after upgrade from Jira 6.3 to Jira 6.3.4, immediately tomcat started using all CPU (2 virtual cpu's) full (almost 100%). When no one is using Jira, cpu (tomcat) usage is about ~2% and when any jira user opens any page, usage immediately jumps to 80% - 100% percents untill page is loaded and dear God it takes a looong time to load that page. Even though the page is only pressed to "reload". Using processexp showed that the problem is that tomcat creats MSVCR100.dll threads (~100 threads) that overuse cpu. After searching for any solutions i've increased jira Java memory sizes as follows:



Although, there are a lot suggestions what to do, being an average computer administrator i do not actually know where to begin and what i need to find in catalina logs or so. Also, I didnt quiet understand how to make a dump file for this problem.

Virtual Machine Windows 7

4 GB Ram

2 CPU's

Jira version 6.3.4

Only 1 application running on Tomcat 7

Can anyone direct me to the solution? Catalina.log:

3 answers

I'm facing exactly the same issue as you described. And I ended up did a OS recovery to my daily disk restore point which has an earlier JIRA version of 6.1.

Thanks for an answer, i'm afraid that i would have to do the same but that's just nonsense.

Maybe it's worth to submit a bug for this?

Forgot to mention my server config is:

Windows Server 2012

16G Ram

4 Cores

Jira Version 6.3.4

How come I changed Memory sizes in setenv.bat but still Systeminfo shows:

JVM Input Arguments -Dcatalina.home=C:\Program Files\Atlassian\JIRA -Dcatalina.base=C:\Program Files\Atlassian\JIRA -Djava.endorsed.dirs=C:\Program Files\Atlassian\JIRA\endorsed\Program Files\Atlassian\JIRA\temp -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.util.logging.config.file=C:\Program Files\Atlassian\JIRA\conf\ -XX:MaxPermSize=384m exit -Xms128m -Xmx256m

Appearantly, Jira installation setup is shipped without some very importat java config parameters, such as:



Adding those to the Tomcat ( helped to free about 15% cpu which does a bit of a trick.

Also, i ran the Jira log scanner and it also showed same errors to fix and docummentation to them.

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