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First Steps with MAT

by BonitaSoft on Jun 29, 2011

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mat jmap jconsole

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First Steps with MAT — Presentation Transcript

First Steps with MAT
AurélienPupier@EclipseDemocamp Grenoble, June 28th 2011
Memory Analyzer Tool
Analyzeyourmemory
You need a HeapDump!!!
Heap.bin
*.hprof
How to get a « HeapDump »
Post-mortem
-XX:HeapDumpOnOutOfMemoryError
-XX:HeapDumpPath
During execution
Directly from MAT
JConsole
Jmap
Demo
Analyzeyourmemory
Detectobjectskept in memory
Detectduplicated classes (libs)
Generateuseful reports
Memory leaks
Detectpath to GC root
Compare two dumps
Use Querier to generatecomplexrequests and savequery
See also…
aurelien.pupier@bonitasoft.com
Twitter: @apupier
Eclipse blog: www.bonitasoft.org/blog/category/eclipse
Company: www.bonitasoft.com
Community: www.bonitasoft.org
Twitter: @bonitasoft