[jira] [Commented] (HBASE-15492) Memory usage optimizations (Write path)

["Vladimir Rodionov (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-15492?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15205810#comment-15205810 ] 

Vladimir Rodionov commented on HBASE-15492:
-------------------------------------------

Applied 4 patches on top of HBASE-15479: HBASE-15493, HBASE-15491, HBASE-15501, HBASE-15512. Set  *hbase.hregion.memstore.chunkpool.maxsize=0.4* (HBASE-15513). See attached 5patches.jfr.

Test run time 340 sec (down from 354 sec pre-HBASE-15479)
Total # of GC in young: 189 ( down from 360)
Total # of GC in old: 4 (down from 8)

Total time spent in GC: 6.7sec (down from 15 sec)

Averages and max GC times are also much better.

Total Allocation rate (combined TLAB + Old space) dropped from 1084MB/s to 704MB/sec (in reality it is even less because it reflects increased throughput). 

> Memory usage optimizations (Write path)
> ---------------------------------------
>
>                 Key: HBASE-15492
>                 URL: https://issues.apache.org/jira/browse/HBASE-15492
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 2.0.0
>            Reporter: Vladimir Rodionov
>            Assignee: Vladimir Rodionov
>             Fix For: 2.0.0
>
>         Attachments: 5Patches.jfr, baseline.jfr, pre-HBASE-15479.jfr
>
>
> This is master ticket for all memory optimization tasks.



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