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https://issues.apache.org/jira/browse/COUCHDB-913?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12923695#action_12923695
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Filipe Manana commented on COUCHDB-913:
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I ran a relaximation test, with the default settings (BTree caches with size
100 and no doc cache):
$ node tests/compare_write_and_read.js --wclients 300 --rclients 150 \
-name1 btree_caching -name2 trunk \
-url1 http://localhost:5984/ -url2 http://localhost:5985/ \
--duration 120
Results are very significant, an improvement in both reads and writes:
http://graphs.mikeal.couchone.com/#/graph/6a174582ead9d38a9200967573028e16
> Caching of BTree nodes and documents
> ------------------------------------
>
> Key: COUCHDB-913
> URL: https://issues.apache.org/jira/browse/COUCHDB-913
> Project: CouchDB
> Issue Type: Improvement
> Reporter: Filipe Manana
> Assignee: Filipe Manana
>
> The following patch adds optional caching of BTree nodes (for both DBs and
> view indexes) and documents:
> http://github.com/fdmanana/couchdb/commit/c6361d1e0d86942fc86350bea9ca1e8d7539c1b3
> Look at the new parameters introduced in default.ini.tpl.in for more details.
> This is based on the work initially done by Randall Leeds, found at:
> http://github.com/tilgovi/couchdb/commits/forevercache
> I'll not commit it before 1.1 nor without any feedback.
> cheers
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