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Eclipse Memory Analyzer - More Than Just a Heap Walker

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Eclipse Memory Analyzer – More Than Just a Heap Walker Andrew Johnson (IBM) Elena Nayashkova (SAP)
Introduction ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
A Little Bit of History ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Agenda ,[object Object],[object Object],[object Object]
IBM Dumps ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Demo ,[object Object],[object Object],[object Object],[object Object],[object Object]
Demo ,[object Object],[object Object],[object Object],[object Object]
Report Overview Any up-to-date architecture loads components with separate class loaders, be it OSGi or JEE application servers. Extensible to display meaningful names. Classification for trouble ticket system: less ping-pong of trouble tickets. Search by keywords: identify if problem is known One big object: memory leak suspect
Report Details Accumulated objects A significant drop in the retained sizes shows the accumulation point The chain of objects and references which keep the suspect alive
Demo ,[object Object],[object Object],[object Object],[object Object]
Report Details
Report Details
Equinox OSGi Bundle Explorer ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Demo ,[object Object],[object Object],[object Object],[object Object],[object Object]
What’s Next? ,[object Object],[object Object],[object Object]
Thank You! ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Binary Heap Dump ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],For Your Reference IOIOII IOIIOI OIOIO IIOIIOI IOIOII IOIIOI OIOIO IIOIIOI
How to Get a Heap Dump ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],For Your Reference
Shallow and Retained Size ,[object Object],[object Object],[object Object],For Your Reference Set of elements Retained Set C C, F, G, J K K C, K C, F, G, J, K, I
Dominator Tree ,[object Object],[object Object],[object Object],For Your Reference ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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Eclipse Memory Analyzer - More Than Just a Heap Walker

  • 1. Eclipse Memory Analyzer – More Than Just a Heap Walker Andrew Johnson (IBM) Elena Nayashkova (SAP)
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  • 8. Report Overview Any up-to-date architecture loads components with separate class loaders, be it OSGi or JEE application servers. Extensible to display meaningful names. Classification for trouble ticket system: less ping-pong of trouble tickets. Search by keywords: identify if problem is known One big object: memory leak suspect
  • 9. Report Details Accumulated objects A significant drop in the retained sizes shows the accumulation point The chain of objects and references which keep the suspect alive
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