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Date: Mon, 6 Jul 2009 15:17:14 -0700 (PDT)
From: "Khaled Elmeleegy (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
Subject: [jira] Commented: (MAPREDUCE-712) TextWritter example is CPU
 bound!!
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    [ https://issues.apache.org/jira/browse/MAPREDUCE-712?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12727811#action_12727811 ] 

Khaled Elmeleegy commented on MAPREDUCE-712:
--------------------------------------------

Ah, I forgot to mention I turned off compression to make sure it's not a
bottleneck. You can see that in the command line I used.


> TextWritter example is CPU bound!!
> ----------------------------------
>
>                 Key: MAPREDUCE-712
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-712
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: task
>    Affects Versions: 0.20.1, 0.21.0
>         Environment: ~200 nodes cluster
> Each node has the following configuration:
> Processors:     2 x Xeon L5420 2.50GHz (8 cores) - Harpertown C0, 64-bit, quad-core (8 CPUs)
> 4 Disks
> 16 GB RAM
> Linux 2.6
> Hadoop version: trunk
>            Reporter: Khaled Elmeleegy
>
> Running the RandomTextWritter example job ( from the examples jar) pegs the machiens' CPUs.

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