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Monitoring code cache size

Question asked by JohnGregg on Jul 10, 2014
Latest reply on Jul 11, 2014 by JohnGregg

All,

 

I'm using 9.1.1.

 

I'm interesting in monitoring the size of my code cache.

 

There are a couple of ways to approach this.

 

I would prefer to tweak what shows up under GC Monitor|Memory Pools.  There are 5 MBeans of type MemoryPool in my JVM and 4 of them show up in the Investigator under GC Monitor|Memory Pools.  I just need to make the 5th one show up also but don't know how.

 

Instead, I can edit the jmx filter to include it somehow.  The value is the "used" element of the "Usage" attribute of java.lang:type=MemoryPool,name=Code Cache.  Usage is a CompositeData object, like java.util.Map, with 4 elements in it.  I want the value for key "used."  I can't figure out the syntax for referencing that value.

 

I can't find anything like this in the docs, nor could I find where the existing Memory Pool data is configured in the various OOTB pbd files.

 

thanks

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