Out Of Memory Exception in large RTC SCM Merges
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We are getting OOM exceptions doing large merges with RTC streams. The merge will involve 40-50 components and several hundred (possibly 1000+) change sets. When successful, the merge takes ~10 seconds. When the OOM error occurs, the merge takes 30+ seconds and kills Eclipse. When relaunching, though, the merge was completed successfully. We are using 4.0.3.
Also, the failure is sort of intermittent. It happens frequently, but not all the time. Not sure if it is related to server load, but that is something we are investigating. The fact the process takes 10 seconds makes me think it is not a server-side issue as dashboards and plans seem to be more resource-intensive. The issue seems to be running out of memory on the Eclipse client for rendering.
We have explored up-ing the -Xmx and -Xms JVM setting up to 1G with no luck. I will attach the Eclipse core dump if I can figure out how...
Thoughts? Anyone seen this issue before?
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One answer
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Hi Harry,
It probably sounds like you require a PMR to investigate this, as the issue may be deeper than a quick forum Q&A, but usually the eclipse log should let you know if the OOM is server side or client side. Everything you write implies it is client side, so it sounds like you're working in the right direction by using 1024 in the eclipse.ini as your max heap. You may need to increase this further and ensure that other applications are not consuming all the memory and causing you to swap heavily. If you could let us know this information too, along with any pertinent errors from the log (with any confidential information obfuscated) then we might be able to assist you further.
Kind regards, Paul Comments Thanks Paul. Here is the information on your questions
1) OS - Windows 7
2) 8G,
3) 80% utilized when running RTC merge
5) yes, to 1024m
I would love to post the Eclipse core file - but don't see how to upload a file on this forum. Ideas??
there is no file attachment support here.
Ditto to what Sam says. As you're not using the restrictive XP, then you should be able to allow more access to your 8GB RAM.
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How do we add an attachment with this forum?? Thanks. We can bold, bullet, quote, paste from Word, but can't attach a file??