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Posted to issues@hbase.apache.org by "Devaraj Das (JIRA)" <ji...@apache.org> on 2013/03/27 18:21:17 UTC
[jira] [Updated] (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 ]
Devaraj Das updated HBASE-5945:
-------------------------------
Priority: Major (was: Blocker)
Downgrading priority since I don't think this is a relevant issue anymore. Please discuss if you feel otherwise.
> 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
> Fix For: 0.95.0
>
> Attachments: 5945-in-progress.2.1.patch, 5945-in-progress.2.patch, 5945-in-progress.patch, 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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