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https://issues.apache.org/jira/browse/COUCHDB-786?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Randall Leeds updated COUCHDB-786:
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Attachment: 0001-db-header-fsync-with-fewer-gen_server-calls.patch
doh. how many times will I forget to run git add.
> Make fewer gen_server calls to fsync the db header
> --------------------------------------------------
>
> Key: COUCHDB-786
> URL: https://issues.apache.org/jira/browse/COUCHDB-786
> Project: CouchDB
> Issue Type: Improvement
> Components: Database Core
> Affects Versions: 0.10.2, 0.11
> Reporter: Randall Leeds
> Fix For: 0.12
>
> Attachments: 0001-db-header-fsync-with-fewer-gen_server-calls.patch
>
>
> Currently the couch_db_updater process is responsible for calling
> couch_file:sync based on the fsync options when the db header is written.
> Instead, this patch just passes the fsync options down to couch_file so that
> writing the header can always be performed with a single gen_server call.
> Writes are serialized through couch_db_updater but reads can have high
> concurrency. This patch should boost write performance when the message queue
> on couch_file is long.
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