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Posted to issues@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2012/12/21 05:25:22 UTC

[jira] [Assigned] (HBASE-5945) Reduce buffer copies in IPC server response path

     [ https://issues.apache.org/jira/browse/HBASE-5945?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

stack reassigned HBASE-5945:
----------------------------

    Assignee: stack  (was: Todd Lipcon)

Assigning myself unless someone else wants to take it. I am trying to dig in on rpc after the cp's have all gone over to pb.
                
> Reduce buffer copies in IPC server response path
> ------------------------------------------------
>
>                 Key: HBASE-5945
>                 URL: https://issues.apache.org/jira/browse/HBASE-5945
>             Project: HBase
>          Issue Type: Improvement
>          Components: IPC/RPC
>    Affects Versions: 0.96.0
>            Reporter: Todd Lipcon
>            Assignee: stack
>            Priority: Blocker
>         Attachments: buffer-copies.txt, even-fewer-copies.txt, hbase-5495.txt
>
>
> The new PB code is sloppy with buffers and makes several needless copies. This increases GC time a lot. A few simple changes can cut this back down.

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