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https://issues.apache.org/jira/browse/HBASE-14479?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14965933#comment-14965933
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stack commented on HBASE-14479:
-------------------------------

bq.  In this jira issue, the benefit is not from this main advantage because we 
just add the requests to queues.

Yeah, in a new issue, should we pull out the queue... Or, rather, I suppose in 
a follow-on I could experiment with removing queues to see if it buys us 
throughput. If it does, then we could look into redoing scheduling so it was 
like the 'Bound handle/thread association' from the paper.

Thanks for looking at the WAL [~ikeda] I have a sense that this pattern might 
help with the multiple-syncing threads... but let me try.

> 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.



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