neo4j/neo4j — pull request #2195 by jakewins (2014-03-29 15:10:02+00:00)
Title: Replace synchronization in XARM with CHM.

- Doubles read query throughput for concurrent MATCH (n) WHERE id(n)=x RETURN n.name
- Moves write contention for small writes solely into LogBuffer.flush() and
PersistenceRow flushing.