[ https://issues.apache.org/jira/browse/HBASE-14479?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14952159#comment-14952159 ]
stack commented on HBASE-14479: ------------------------------- [~nkeywal] FYI. You'll like this one. [~ikeda] Should we use this patten elsewhere, say, in the handoff to syncer threads in WAL? See http://hbase.apache.org/xref/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#1770 if I understand the pattern right, we could purge Readers and have Handlers themselves do the select read from the socket (one less handoff)? > Apply the Leader/Followers pattern to RpcServer's Reader > -------------------------------------------------------- > > Key: HBASE-14479 > URL: https://issues.apache.org/jira/browse/HBASE-14479 > Project: HBase > Issue Type: Improvement > Components: IPC/RPC, Performance > Reporter: Hiroshi Ikeda > Assignee: Hiroshi Ikeda > Priority: Minor > Attachments: HBASE-14479-V2 (1).patch, HBASE-14479-V2.patch, > HBASE-14479-V2.patch, HBASE-14479.patch, gc.png, gets.png, io.png, median.png > > > {{RpcServer}} uses multiple selectors to read data for load distribution, but > the distribution is just done by round-robin. It is uncertain, especially for > long run, whether load is equally divided and resources are used without > being wasted. > Moreover, multiple selectors may cause excessive context switches which give > priority to low latency (while we just add the requests to queues), and it is > possible to reduce throughput of the whole server. -- This message was sent by Atlassian JIRA (v6.3.4#6332)