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Posted to dev@couchdb.apache.org by "ASF subversion and git services (JIRA)" <ji...@apache.org> on 2013/04/24 17:31:16 UTC
[jira] [Commented] (COUCHDB-1775) Lower I/O priority of compaction
[ https://issues.apache.org/jira/browse/COUCHDB-1775?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13640535#comment-13640535 ]
ASF subversion and git services commented on COUCHDB-1775:
----------------------------------------------------------
Commit 1d1cd9ad097fbe3dd0977857fb3c08de23d8f4e0 in branch refs/heads/1775-feature-io-regulator from [~rnewson]
[ https://git-wip-us.apache.org/repos/asf?p=couchdb.git;h=1d1cd9a ]
Deprioritize compaction I/O
When there are compaction vs non-compaction I/O requests, service the
non-compaction requests with higher probability.
Note: For demonstration purposes at the moment, the code is likely too
slow for production use.
COUCHDB-1775
> Lower I/O priority of compaction
> --------------------------------
>
> Key: COUCHDB-1775
> URL: https://issues.apache.org/jira/browse/COUCHDB-1775
> Project: CouchDB
> Issue Type: New Feature
> Reporter: Robert Newson
>
> Running compaction can seriously impact performance of other concurrent tasks. Instead of using a scheduler to move compaction to idle times, instead run compaction I/O at a lower priority somehow.
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