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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-576) Investigate IPC performance
Date Tue, 15 Apr 2008 16:05:06 GMT

    [ https://issues.apache.org/jira/browse/HBASE-576?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12589134#action_12589134

stack commented on HBASE-576:

Dennis says patch does not improve throughput.  Suggests looking at https://grizzly.dev.java.net/.
 There is also http://mina.apache.org/features.html.

Lets first study what is taking the time -- serialization, introspection -- and try and speed
up hadoop ipc.

> Investigate IPC performance
> ---------------------------
>                 Key: HBASE-576
>                 URL: https://issues.apache.org/jira/browse/HBASE-576
>             Project: Hadoop HBase
>          Issue Type: Improvement
>          Components: ipc
>    Affects Versions: 0.2.0, 0.1.2, 0.1.0, 0.1.1
>            Reporter: Jim Kellerman
> Turning off all file I/O, and running the PerformanceEvaluation test, of 1,048,576 sequential
writes to HBase managed to achieve only 7,285 IPCs per second.
> Running PerformanceEvaluation sequential write test modified to do an abort instead of
a commit, it was possible to do 68,337 operations per second. We are obviously spending a
lot of time doing IPCs. 
> We need to investigate to find the bottleneck. Marshalling and unmarshalling? Socket
setup and teardown?

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