[jira] [Commented] (HBASE-22387) Evaluate the get/scan performance after reading HFile block into offheap directly

["Anoop Sam John (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-22387?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16854192#comment-16854192 ] 

Anoop Sam John commented on HBASE-22387:
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bq.After applied the patch [0001-Initialize-a-small-buffer-to-send-the-short-circuit-.patch|https://issues.apache.org/jira/secure/attachment/12970333/0001-Initialize-a-small-buffer-to-send-the-short-circuit-.patch],  the dfs client heap allocation dropped from 45% to 27%,  the  heap allocation flame graph: 
Good. Raised any Hadoop jira?

> 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: 0001-Initialize-a-small-buffer-to-send-the-short-circuit-.patch, G1GC-stage-stw.case01.png, G1GC-stage-stw.case02-with-buffer-size-64KB.png, G1GC-stw.case01.png, G1GC-stw.case02-with-buffer-size-64KB.png, QPS-latency.case01.png, QPS-latency.case02-with-buffer-size-64KB.png, async-prof-pid-24534-alloc-2.svg, async-prof-pid-25042-alloc-2.svg, async-prof-pid-25042-cpu-1.svg, async-prof-pid-25042-lock-3.svg, blockReaderRemote.png, blocksByHFile-stack-trace.png, screenshot-1.png, screenshot-2.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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