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https://issues.apache.org/jira/browse/COUCHDB-2724?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14642637#comment-14642637
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ASF subversion and git services commented on COUCHDB-2724:
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Commit 1ae21f7c415acf3d1aba8b4924ca3093014b86b1 in couchdb-cassim's branch
refs/heads/master from [~rnewson]
[ https://git-wip-us.apache.org/repos/asf?p=couchdb-cassim.git;h=1ae21f7 ]
Handle waiting_for_updates in callback
COUCHDB-2724
> Batch rows in streaming responses to improve throughput
> -------------------------------------------------------
>
> Key: COUCHDB-2724
> URL: https://issues.apache.org/jira/browse/COUCHDB-2724
> Project: CouchDB
> Issue Type: Improvement
> Security Level: public(Regular issues)
> Components: Database Core, HTTP Interface
> Reporter: Adam Kocoloski
> Assignee: Adam Kocoloski
> Fix For: 2.0.0
>
>
> [~tonysun83] showed me some profiling of the {{_changes}} feed which
> indicated that the coordinator process was spending about 1/3 of its time
> executing inside {{send_delayed_chunk}}. We can reduce the number of
> invocations of this function by buffering individual rows until we reach a
> (configurable) threshold for sending the data out the wire.
> We'll of course want to be careful about continuous feeds; if we're in the
> "slow drip" portion of the feed we'll obviously want to emit right away
> instead of adding latency unnecessarily.
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