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From Kevin Burton <>
Subject Using chronicle map to store off heap data easily
Date Fri, 20 Mar 2015 06:16:43 GMT
This is interesting.

Right now AMQ5 uses ConcurrentHashMap and for large heaps this has some
obvious GC issues.

1.  You have to keep a LARGE % of the JVM memory free for large GCs.

2.  All the objects pool into the old generation screwing up GC and wasting
cycles for every GC.

Then there’s this.

This should allow a drop in replacement for CHMs with off-heap memory.


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