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From "Filipe Manana (JIRA)" <j...@apache.org>
Subject [jira] Updated: (COUCHDB-1054) Better couch_log performance
Date Wed, 02 Feb 2011 07:39:29 GMT

     [ https://issues.apache.org/jira/browse/COUCHDB-1054?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Filipe Manana updated COUCHDB-1054:
-----------------------------------

    Attachment: COUCHDB-1054-2.patch

Simpler version of the patch.
Also gets rid of the useless all possible EOLs substitution with CRLF.

http://graphs.mikeal.couchone.com/#/graph/0379dbdaef29b1c0fbf0342154029698

> Better couch_log performance
> ----------------------------
>
>                 Key: COUCHDB-1054
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-1054
>             Project: CouchDB
>          Issue Type: Improvement
>            Reporter: Filipe Manana
>            Assignee: Filipe Manana
>         Attachments: COUCHDB-1054-2.patch, COUCHDB-1054.patch
>
>
> Building the messages to write to the console and the log file can be done outside the
couch_log gen_event. This significantly increases the parallelism when many processes log
messages. The following relaximation test graph shows a throughput increase using the attached
patch against current trunk:
> http://graphs.mikeal.couchone.com/#/graph/0379dbdaef29b1c0fbf03421540243f7

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