In this tutorial lets see how to install Memory analyzer in eclipse and start analyzing both Sun/Oracle jdk heap dumps (*.hprof) and ibm jdk heap dumps (*.phd).
Installation:
Step 1:
In Eclipse, Navigate to Help -> Install New Software.
Step 2:
Enter the eclipse memory analyzer update site url: http://download.eclipse.org/mat/1.5/update-site/ and press enter. Select the necessary components. Here I am selecting only “Memory analyzer for Eclipse IDE” and not selecting “Stand-alone Memory Analyzer.”
Step 3:
Click “Next” twice, accept the terms and conditions, then click “Finish”. Once the installation is complete, we will get the below confirmation message. Press “Yes” to restart eclipse.
Step 4:
Once eclipse comes up, Navigate to “Window->Open Perspective-> Other -> Memory Analysis” to open the memory analysis perspective.
Step 5:
In the file menu, check if the options “Acquire Heap Dump” and “Open Heap Dump” are available. If so, then we are all set for analyzing a hprof heap dump file.
Navigate to File -> Open Heap Dump. Select the hprof file.
Once we select the hprof file, it may take 15-20 minutes depending on the heap dump size and CPU of the local machine, to complete analyzing and open the report as shown below.
To Open a IBM JVM Heap dump – (Portable Heap Dump (phd) format)
IBM heap dumps are generated in *.phd file format. To open *.phd heap dumps, we need to install IBM Diagnostic tool framework for java (dtfj), from the below URL.
http://public.dhe.ibm.com/ibmdl/export/pub/software/websphere/runtimes/tools/dtfj/
Step 1:
In Eclipse Memory Analyzer Window, Navigate to Help -> Install New Software and provide the dtfj url and press Enter.
Step 2:
Click Next twice, Accept the terms of the license agreements and then click Finish. IBM diagnostic tool framework will start installing. This may take 5-10 minutes. Once the installation is completed, press “Yes” to restart eclipse.
Step 3:
Once eclipse is restarted, we can now see *.phd files under known formats. To check this, navigate to File -> Open Heap Dump. Select the phd file.
Step 4:
Now the phd file will be loaded and analyzed. This step may take 15-20 minutes depending on the heap dump size.
