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Date: Sun, 3 Feb 2008 00:58:09 -0800 (PST)
From: "dhruba borthakur (JIRA)" <jira@apache.org>
To: core-dev@hadoop.apache.org
Subject: [jira] Updated: (HADOOP-2768) DFSIO write performance benchmark
 shows a regression
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     [ https://issues.apache.org/jira/browse/HADOOP-2768?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

dhruba borthakur updated HADOOP-2768:
-------------------------------------

    Status: Patch Available  (was: Open)

> DFSIO write performance benchmark shows a regression
> ----------------------------------------------------
>
>                 Key: HADOOP-2768
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2768
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.16.0
>            Reporter: Mukund Madhugiri
>            Assignee: dhruba borthakur
>            Priority: Blocker
>             Fix For: 0.16.0
>
>         Attachments: perf.patch, perf.patch, perf1.patch
>
>
> We are seeing a performance regression in DFSIO write benchmark, possibly due to Hadoop-1707. 
> Here is the data:
> - Aggregate cluster throughput went from 0.30G to 0.14G with 39 concurrent clients, on 20 nodes
> - Aggregate cluster throughput went from 1.15G to 0.85G with 39 concurrent clients, on 100 nodes

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