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https://issues.apache.org/jira/browse/HBASE-22387?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16849472#comment-16849472
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Zheng Hu commented on HBASE-22387:
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Attached two pictures from my testing cluster with 5 nodes, each nodes has
50GB onheap + 50GB offheap(more nodes detail can see
[here|https://issues.apache.org/jira/secure/attachment/12970000/test-cluster-configuration-details.png]),
there seems still be a high GC pressure. Let me see.
> Evaluate the get/scan performance after reading HFile block into offheap
> directly
> ---------------------------------------------------------------------------------
>
> Key: HBASE-22387
> URL: https://issues.apache.org/jira/browse/HBASE-22387
> Project: HBase
> Issue Type: Sub-task
> Reporter: Zheng Hu
> Assignee: Zheng Hu
> Priority: Major
> Attachments: G1GC-stage-stw.case01.png, G1GC-stw.case01.png,
> blockReaderRemote.png, blocksByHFile-stack-trace.png, screenshot-1.png,
> test-cluster-configuration-details.png
>
>
> Now, all sub-tasks has been resolved now (except the HBASE-21946 because of
> the hadoop dependency problem), will provide some performance benckmarks to
> show the latency improvement.
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