Benedict created CASSANDRA-7030:
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Summary: Remove JEMallocAllocator
Key: CASSANDRA-7030
URL: https://issues.apache.org/jira/browse/CASSANDRA-7030
Project: Cassandra
Issue Type: Improvement
Components: Core
Reporter: Benedict
Assignee: Benedict
Priority: Minor
Fix For: 2.1 beta2
JEMalloc, whilst having some nice performance properties by comparison to Doug
Lea's standard malloc algorithm in principle, is pointless in practice because
of the JNA cost. In general it is around 30x more expensive to call than
unsafe.allocate(); malloc does not have a variability of response time as
extreme as the JNA overhead, so using JEMalloc in Cassandra is never a sensible
idea. I doubt if custom JNI would make it worthwhile either.
I propose removing it.
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