[BTRACE-36] As a BTrace User I would like to be able to view the memory usage of the different memory pools

[jbachorik]

[reporter="joachimhskeie", created="Wed, 27 Jan 2010 17:25:12 +0100", resolved="Fri, 9 Jul 2010 16:18:58 +0200"]

BTraceUtils have heapUsage() and nonHeapUsage() methods. However, I would also like to be able to get the memory usage for the other memory pools like new generation, old generation and the surviorspace as well as the permanent generation.

[jbachorik]

[author="joachimhskeie", created="Tue, 18 May 2010 20:26:54 +0200"]

Adding comments from Email, along with a diff file.

I have made some changes to the BTrace core to make it possible to get information regarding the individual Memory Pools the JVM uses. I have implemented this feature using Object arrays and format string in a similar fashion to printAggregation.

The BTrace script would then do something like the following to print out a formatted string for each memory pool:

String execStringFormat = strcat("[MemoryPool;", property("btrace.agentname"));
println(getMemoryPoolUsage(strcat(execStringFormat, ";%1$s;%2$d;%3$d;%4$d;%5$d;Memory]")));

I am attaching the diff file for BTrace (My Eclipse reorganized the imports in alphabetical order, feel free to remove this part of the patch if you dont want them sorted that way).

[jbachorik]

[author="jbachorik", created="Fri, 9 Jul 2010 16:18:58 +0200"]

I've pushed your proposed changes since to save you from adapting to the changes in BTraceUtils which span rather big part of the file.

Fixed http://kenai.com/projects/btrace/sources/hg/revision/323