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MAT on Linux [message #791679]

Mon, 06 February 2012 05:55

Gopi V

Messages: 2
Registered: February 2012

Junior Member

Hi,
I ran eclipse memory analyzer on Linux (Linux serverName 2.6.18-194.11.3.el5 #1 SMP Mon Aug 23 15:51:38 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux)

using using below command

jdk1.6.0_24/bin/java -XX:MaxNewSize=512m -Xmx7168m -XX:MaxPermSize=512m -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -verbose:gc -XX:-UseGCOverheadLimit -jar plugins/org.eclipse.equinox.launcher_1.1.1.R36x_v20101122_1400.jar -consoleLog -application org.eclipse.mat.api.parse ../java_pid98178.hprof

And it created below files for java_pid98178.hprof (2.5GB file)

java_pid98178.idx.index
java_pid98178.o2c.index
java_pid98178.a2s.index
java_pid98178.inbound.index
java_pid98178.outbound.index
java_pid98178.o2hprof.index
java_pid98178.index
java_pid98178.domIn.index
java_pid98178.o2ret.index
java_pid98178.domOut.index

Now, how can I analyze the files in graphic mode like in Windows on LInux. I am using Putty from my Windows laptop and I have Xwindows too.

I have exported DISPLAY variable and ran Xwindows on my laptop. Then ran ./MemoryAnalyzer, but no luck.

Thanks,
GV

[Updated on: Mon, 06 February 2012 06:00]

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Re: MAT on Linux [message #795999 is a reply to message #791679]

Sat, 11 February 2012 07:52

Krum Tsvetkov

Messages: 165
Registered: July 2009

Senior Member

Hi,

There shouldnt be any difference to how you run MAT compared to Eclipse or other GUI software. It should be enough to export the display. I can't tell what is going wrong.

May be if this doesn't work, you can try the other way around - copy the dump and index files on your desktop machine. See http://www.eclipse.org/forums/index.php/t/271643/ .

Hope this helps.

Krum

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Re: MAT on Linux [message #835806 is a reply to message #791679]

Tue, 03 April 2012 17:45

Simon Kelly

Messages: 2
Registered: April 2012

Junior Member

Hi,

Did you manage to get this working? I am in the same situation as you were; running the tool on our linux development server but not sure of the best route to viewing the results graphically. I would appreciate any guidance you could possibly give.

Regards,
Simon.

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Re: MAT on Linux [message #836514 is a reply to message #835806]

Wed, 04 April 2012 15:27

Gopi V

Messages: 2
Registered: February 2012

Junior Member

Simon,

I made an update to my command. Below is my updated command, this will also run the Leak_Suspects, System_Overview and Top_Components reports.

<JAVA_HOME>/bin/java -XX:MaxNewSize=512m -Xmx4096m -XX:MaxPermSize=512m -XX:-UseGC
OverheadLimit -jar plugins/org.eclipse.equinox.launcher_1.1.1.R36x_v20101122_1400.jar -consoleLog -application org.eclipse.mat.api.parse <HeapFileLocation>/heap.wls1_103d121.02-15-2012.hprof org.eclipse.mat.api:suspects org.eclipse.mat.api:overview org.eclipse.mat.api:top_components

This will generate <HeapDump>_Leak_Suspects.zip, <HeapDump>_Top_Components.zip and <HeapDump>_System_Overview.zip along with the index files.
Then I have copied my heap dump, index files and zip files (reports) to my windows desktop and ran eclipse memory analyzer on windows against my heap dump. Since MAT already got index files and Leak_Suspects, System_Overview and Top_Components reports, it wont parse the heapdump again (here you can give max heap ~1GB or 512MB) and you can view all the 3 reports. I hope this will help you.

Additionally even if X windows works the display wont be as good and fast as we run MAT locally on windows.

I hope this helps you

Regards,
Gopi

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