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WayneBeck1-Visitor
1-Visitor
August 24, 2012
Question

GC overhead limit exceeded.....

  • August 24, 2012
  • 3 replies
  • 1533 views

Ok so a few weeks ago we upgraded to M070 of Windchill 9.1. Since then we have add some stability issues that I have open with PTC. But today I got this error. GC overhead limit exceeded. This came up when someone did a search and then I got it when I went to my home tab. Any input would be great.

3 replies

J
jessh12-Amethyst
12-Amethyst
August 24, 2012
That seems simple enough -- one of the server processes has essentially
run out of memory.

Google "outofmemoryerror gc overhead limit exceeded" and you'll see lots
of information about this error.

The server logs should make it clear which process ran out of memory.

Whether one of your server processes has been given too little memory or
whether you have something that's using way to much memory and/or
failing to release memory is a much trickier question...

S
SteveVinyard1-Visitor
1-Visitor
August 24, 2012
Hi Wayne, I would check your java args to see if Explicit GC collection is disabled or not.

Something similar to this...though there is another one like this for the ServerManager.

Now, that being said if your system isn't tuned up just right (principal cache is too small etc) the system will become overworked with and as such garbage collection will run a lot. I'm guessing its most likely a tuning issue.


<property name="wt.manager.cmd.MethodServer.gc.log.args" overridable="true"&lt;br"/> targetFile="codebase/wt.properties"
value="-Xloggc:$(wt.logs.dir)$(dir.sep){1}-{2,date,yyMMddHHmmssSSS}-{0}-GC.log -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -XX:+DisableExplicitGC"/>


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Steve Vinyard
Application Engineer
K
kalidhas1-Visitor
1-Visitor
August 27, 2012
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