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https://issues.apache.org/jira/browse/HBASE-17049?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16268571#comment-16268571
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Guanghao Zhang commented on HBASE-17049:
----------------------------------------
Rerun the test with jdk8u152. The result for asyncfs is better than the last
result I tested with jdk8u111.
{code}
./hbase org.apache.hadoop.hbase.PerformanceEvaluation --nomapred --presplit=50
--size=50 --columns=50 --valueSize=200 --writeToWAL=true --bloomFilter=NONE
randomWrite 24
FSHLog: Min: 1137792ms Max: 1149589ms Avg: 1145215ms
AsyncFSWAL: Min: 902928ms Max: 909489ms Avg: 907534ms
AsyncFSWAL(with HBASE-17049.patch): Min: 874205ms Max: 886175ms Avg:
883192ms
{code}
When set autoFlush=True, try the PE again.
{code}
./hbase org.apache.hadoop.hbase.PerformanceEvaluation --nomapred
--autoFlush=True --presplit=50 --size=50 --columns=50 --valueSize=200
--writeToWAL=true --bloomFilter=NONE randomWrite 24
FSHLog: Min: 1440408ms Max: 1443414ms Avg: 1442290ms
AsyncFSWAL: Min: 1068619ms Max: 1071616ms Avg: 1070317ms
AsyncFSWAL(with HBASE-17049.patch): Min: 1010050ms Max: 1012656ms Avg:
1011489ms
{code}
> Do not issue sync request when there are still entries in ringbuffer
> --------------------------------------------------------------------
>
> Key: HBASE-17049
> URL: https://issues.apache.org/jira/browse/HBASE-17049
> Project: HBase
> Issue Type: Sub-task
> Components: wal
> Reporter: Duo Zhang
> Assignee: Duo Zhang
> Priority: Critical
> Fix For: 2.0.0-beta-1
>
> Attachments: HBASE-17049.patch, delay-sync.patch
>
>
> https://issues.apache.org/jira/browse/HBASE-16890?focusedCommentId=15647590&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15647590
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