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From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15561) See how G1GC works with MSLAB and chunk pool
Date Thu, 06 Oct 2016 05:22:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15561?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15550918#comment-15550918
] 

ramkrishna.s.vasudevan commented on HBASE-15561:
------------------------------------------------

bq.Sure, were these tests with chunk pool enabled? How beneficial is chunk pool by itself,
ramkrishna.s.vasudevan?
Yes. The entire tests were with MSLAB and Chunk Pool ON. 
Chunk pool is ideally the one where the actual object reuse happens. So for offheap buffers
that is a  must have to avoid offheap memory fragementation and problems leading to unclaimed
offheap buffers lying. 

> See how G1GC works with MSLAB and chunk pool
> --------------------------------------------
>
>                 Key: HBASE-15561
>                 URL: https://issues.apache.org/jira/browse/HBASE-15561
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: ramkrishna.s.vasudevan
>            Assignee: ramkrishna.s.vasudevan
>
> Based on the discussion in https://issues.apache.org/jira/browse/HBASE-14613, we need
to identify specifically how MSLAB and G1GC work. This sub-task is mainly to identify how
things work with G1GC and note down the observations. 



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