Eclipse memory allocation problem

Question

I'm trying to analyse a ~800mb heap dump, which requires a bigger heap than the standard for my eclipse. however, when I go to the eclipse.ini file and set a -Xmx2g (or -Xmx2048m) I get an error "Failed to create the Java Virtual Machine".

1) yes, I have enough memory. 2) I can change it up to exactly -Xmx976m. 3) I've tried the standalone MAT analyser and it works with -Xmx1024m, not a byte more. 4) No, 1gb is not enough to analyse that heap, I get a OOM

This is the eclipse error:

This is the MAT error:

(I reckon they are the same, this is just so you can see an example with MAT)

My current eclipse.ini (working) is:

-startup
plugins/org.eclipse.equinox.launcher_1.1.0.v20100507.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.0.v20100503
-product
org.eclipse.epp.package.java.product
--launcher.defaultAction
openFile
--launcher.XXMaxPermSize
256M
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
-vmargs
-Dosgi.requiredJavaVersion=1.5
-Xms40m
-Xmx384m

Anybody figures this out?

thanks!

f.

Answer 1

This problem you are seeing is on windows I assume?

I had the same issue. After reading your problem I went out digging again. I just found a solution to my issue. If it is the same try it out. In your Eclipse or MemoryAnalyzer ini file, remove the - fromthe Xmx option. My ini file then becomes

-vmargs
Xmx1536m

and now works like a charm with more memory. Thanks to the comment by Alex2308 in this thread http://troyworks.com/blog/2008/06/08/eclipse-jvm-terminated-exit-code-1/comment-page-1/#comment-80

---

My previous solution was to get a Linux Live disc. boot to Linux and then I was able to allocated 2g in MAT without issue. (make sure you get MAT for Linux)

Not the best work around, but I could never find anyting on the MAT forums indicating a bug.