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https://issues.apache.org/jira/browse/HBASE-5915?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13266711#comment-13266711
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Zhihong Yu commented on HBASE-5915:
-----------------------------------
TestKVComparisonPerformance without the patch:
{code}
Run 99 took 99574us
Avg: 98655us
{code}
Here is the output with the patch:
{code}
Run 99 took 79849us
Avg: 79295us
{code}
> Improve performance of KeyValue comparison
> ------------------------------------------
>
> Key: HBASE-5915
> URL: https://issues.apache.org/jira/browse/HBASE-5915
> Project: HBase
> Issue Type: Improvement
> Components: performance
> Affects Versions: 0.94.1
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Attachments: 5915-v2.txt, hbase-5915.txt
>
>
> Got bored tonight and poked around at making KeyValue comparison faster. I
> was able to get a ~23% speedup on a micro-benchmark I wrote by using Unsafe
> in a few more places. This should make some difference for real workloads,
> since this is usually one of the top CPU consumers.
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