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https://issues.apache.org/jira/browse/CASSANDRA-6755?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14041180#comment-14041180
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Benedict commented on CASSANDRA-6755:
-------------------------------------
Yes, unfortunately I just can't get it quite as fast; I think this is most
likely down to an increase in virtual invocation costs, as the introduction of
the parallel NativeCell tree breaks the VM's opportunities for fast-pathing
everything. Although I haven't had the time to truly test the hypothesis, there
aren't many other possibilities.
I'll give [~slebresne] a 24hr opportunity to veto the simple cell comparison
changes if he wants to before committing with your nits.
> Optimise CellName/Composite comparisons for NativeCell
> ------------------------------------------------------
>
> Key: CASSANDRA-6755
> URL: https://issues.apache.org/jira/browse/CASSANDRA-6755
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Benedict
> Assignee: T Jake Luciani
> Priority: Minor
> Labels: performance
> Fix For: 2.1.1
>
> Attachments: 6755.txt, 6755v2.txt
>
>
> As discussed in CASSANDRA-6694, to reduce temporary garbage generation we
> should minimise the incidence of CellName component extraction. The biggest
> win will be to perform comparisons on Cell where possible, instead of
> CellName, so that Native*Cell can use its extra information to avoid creating
> any ByteBuffer objects
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