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https://issues.apache.org/jira/browse/COUCHDB-797?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12878271#action_12878271
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Adam Kocoloski commented on COUCHDB-797:
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Hi Sean, `make check` fails for me with this patch. Can you double-check it?
/usr/local/src/couchdb/test/etap/121-stats-aggregates...............FAILED
tests 7, 9, 11, 13, 15, 17
Failed 6/17 tests, 64.71% okay
> PATCH: couch_stats_aggregator should use queue instead of list
> --------------------------------------------------------------
>
> Key: COUCHDB-797
> URL: https://issues.apache.org/jira/browse/COUCHDB-797
> Project: CouchDB
> Issue Type: Improvement
> Components: Database Core
> Reporter: Sean Bartell
> Priority: Minor
> Attachments: 0001-stats-use-queue-instead-of-list-for-speed.patch
>
>
> couch_stats_aggregator uses a list to store samples, but many times per
> second adds a value to the front or removes one from the end. This patch
> makes it use a queue instead. Statistics take up little CPU time, but there's
> a noticeable improvement when CouchDB is idle.
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