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https://issues.apache.org/jira/browse/CASSANDRA-6755?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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T Jake Luciani updated CASSANDRA-6755:
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Attachment: 6755.txt
The attached patch bumps performance 15% for offheap_objects. Still slower
than offheap_buffers for me though.
I refactored FastByteOperations compareTo quite a bit. I found that I had to
increase the MaxInlineSize to get the JVM to inline it.
> 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
>
>
> 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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