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MAT command line with IBM PHD files? [message #1831169]

Wed, 12 August 2020 21:37

vinay chilakamarri

Messages: 2
Registered: August 2020

Junior Member

I am trying to extract MAT generated reports using the command line feature and was able to use the below link and command to generates reports successfully:

https://wiki.eclipse.org/MemoryAnalyzer/FAQ

/usr/java5_64/jre/bin/java -Dosgi.bundles=org.eclipse.mat.dtfj@4:start,org.eclipse.equinox.common@2:start,org.eclipse.update.configurator@3:start,org.eclipse.core.runtime@start -jar plugins/org.eclipse.equinox.launcher_*.jar -consoleLog -application org.eclipse.mat.api.parse path/to/mydump.dmp.zip org.eclipse.mat.api:suspects org.eclipse.mat.api:overview org.eclipse.mat.api:top_components

This works perfectly for HPROF files. However, when I try with Portable heapdumps from IBM (PHD file) the command would fail with the exception below:


!ENTRY org.eclipse.osgi 4 0 2020-08-12 00:22:38.019
!MESSAGE Application error
!STACK 1
org.eclipse.mat.SnapshotException: Error opening heap dump 'heapdump.20160404.083909.9480.0002.phd'. Check the error log for further details.
	at org.eclipse.mat.parser.internal.SnapshotFactoryImpl.parse(SnapshotFactoryImpl.java:268)
	at org.eclipse.mat.parser.internal.SnapshotFactoryImpl.openSnapshot(SnapshotFactoryImpl.java:126)
	at org.eclipse.mat.snapshot.SnapshotFactory.openSnapshot(SnapshotFactory.java:145)
	at org.eclipse.mat.internal.apps.ParseSnapshotApp.parse(ParseSnapshotApp.java:134)
	at org.eclipse.mat.internal.apps.ParseSnapshotApp.start(ParseSnapshotApp.java:106)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1515)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1488)
Caused by: java.io.IOException: Not a HPROF heap dump
	at org.eclipse.mat.hprof.AbstractParser.readVersion(AbstractParser.java:130)
	at org.eclipse.mat.hprof.Pass1Parser.read(Pass1Parser.java:84)
	at org.eclipse.mat.hprof.HprofIndexBuilder.fill(HprofIndexBuilder.java:80)
	at org.eclipse.mat.parser.internal.SnapshotFactoryImpl.parse(SnapshotFactoryImpl.java:222)
	... 17 more

I ran this command on the same plugins folder where MAT had the DTFj extension installed. And I could see that the DTFj jars were placed in the configuration folder when I installed that plugin. When I try to open the same PHD file on the GUI, it works fine.

I was wondering if there is a way to get the command line launcher to parse the PHD file format and generate reports out of it.

Thanks!

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Re: MAT command line with IBM PHD files? [message #1831178 is a reply to message #1831169]

Thu, 13 August 2020 05:34

vinay chilakamarri

Messages: 2
Registered: August 2020

Junior Member

I was able to go past this. The problem seems to be that I had a copy of plugins and configuration folder in a different location where I was running the command line which I did not notice.

Once I moved back to the MAT install folder and executed the command, it worked fine.

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