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From "Filipe Manana (JIRA)" <j...@apache.org>
Subject [jira] Commented: (COUCHDB-913) Caching of BTree nodes and documents
Date Thu, 21 Oct 2010 23:53:15 GMT

    [ https://issues.apache.org/jira/browse/COUCHDB-913?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12923700#action_12923700
] 

Filipe Manana commented on COUCHDB-913:
---------------------------------------

For a few (2, 3) DBs opened, with a cache size of 100, it doesn't seem noticeable. Measured
by looking at 'top' on Linux.

Unfortunately relaximation doesn't measure CPU and memory usage (or some other CouchDB perfomance
test tool).

Nevertheless, any of the caches can be enabled or disabled at a DB/View group level or globally.
Just wondering if the current defaults are ok.

> 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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