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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5943) Set tcpnodelay as default
Date Fri, 04 May 2012 22:13:48 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5943?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13268747#comment-13268747
] 

Todd Lipcon commented on HBASE-5943:
------------------------------------

before doing this we should run a wireshark and make sure we're not sending too many small
packets, etc. See the discussion in  HADOOP-8069
                
> Set tcpnodelay as default
> -------------------------
>
>                 Key: HBASE-5943
>                 URL: https://issues.apache.org/jira/browse/HBASE-5943
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: stack
>            Assignee: stack
>         Attachments: nodelay.txt
>
>
> From IRC:
> {code}
> 14:46 < tlipcon> i turned off the FirstKeyOnlyFilter on the shell count command
> 14:46 < tlipcon> thgouhtput dropped like carzy... looked at strace, and saw 40ms
delays
> 14:46 < tlipcon> turned on ipc.server.nodelay or whaever and it got fast again
> 14:46 < tlipcon> we should really ship that by default on
> 14:46 < tlipcon> there are probably people getting screwed by it
> {code}

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