[jira] [Commented] (COUCHDB-3284) 8Kb read-ahead in couch_file causes extra IO and binary memory usage

["ASF subversion and git services (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/COUCHDB-3284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15890514#comment-15890514 ] 

ASF subversion and git services commented on COUCHDB-3284:
----------------------------------------------------------

Commit bf12a7a3336bd438493e7db1d090160f1c1a09f3 in couchdb-couch's branch refs/heads/2971-count-distinct from [~vatamane]
[ https://git-wip-us.apache.org/repos/asf?p=couchdb-couch.git;h=bf12a7a ]

Remove dead code from couch_file

This code was left over after removing 8kB read-ahead

https://github.com/apache/couchdb-couch/pull/223/commits/d52a5335d930d11ade4953c8576d22f55872ff6f

COUCHDB-3284


> 8Kb read-ahead in couch_file causes extra IO and binary memory usage
> --------------------------------------------------------------------
>
>                 Key: COUCHDB-3284
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-3284
>             Project: CouchDB
>          Issue Type: Bug
>          Components: Database Core
>    Affects Versions: 2.0.0
>            Reporter: Nick Vatamaniuc
>         Attachments: jira_io_increased.png
>
>
> 8Kb read-ahead logic in couch_file seems to cause extra input IO thrashing, binary memory usage but doesn't speed-up



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