ansaurus

Question

Answer 1

+1 A:

Sounds like garbage collection

You could try changing the settings in your eclipse.ini, maybe with a higher Xmx value

--launcher.XXMaxPermSize
256m
-vmargs
-Xms256m
-Xmx1024m
-XX:PermSize=64m
-Xss1M
-server
-XX:+DoEscapeAnalysis
-XX:+UseConcMarkSweepGC

stacker 2010-04-21 10:19:56

Turning on the General preferences option "Show heap status" can also help to determine whether garbage collection is the cause.

Stephen Denne 2010-04-21 10:26:11

I already started eclipse with a lot of memory (permsize 128 mb and 1024 mb heap). Also the cpu usage is up to 100 % for too long if it only were garbage collection.

Florian Gutmann 2010-04-21 10:32:52

Answer 2

+1 A:

You can use visualvm to profile eclipse, get a heap dump or a thread dump, see which threads are running, etc.

Stephen Denne 2010-04-21 10:24:15

Wow! I didn't know visualvm before it looks very promising and i think i got a hint to the right direction. Thanks a lot!

Florian Gutmann 2010-04-21 11:09:20

@Florian were you able to determine what was using the CPU?

Stephen Denne 2010-04-21 22:47:23

I thought so, but later found out that it wasn't the php plugin. But now i have a good tool to track down the issue.

Florian Gutmann 2010-04-22 07:29:25

Finally i could really track it down. Now I'm 99% sure what causes the load. It's a regular expression invoked by `org.eclipse.ui.internal.console. ConsolePatternMatcher$MatchJob.run(ConsolePatternMatcher.java:127)`. When i tried to clear the console output eclipse got totally unresponsive. I will try to collect some more information about the issue (like the console output) and go for the eclipse mailing list. Thanks again Stephen!

Florian Gutmann 2010-04-22 08:51:57

ansaurus

tags:

views:

answers:

Eclipse uses 100 % CPU randomly

related questions