First Steps with MAT

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Bonitasoft

Technology Entertainment & Humor

First Steps with MAT AurélienPupier@EclipseDemocamp Grenoble, June 28th 2011

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

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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