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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

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First Steps with MAT