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From "dhruba borthakur (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-2768) DFSIO write performance benchmark shows a regression
Date Mon, 04 Feb 2008 05:11:08 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-2768?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

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

    Attachment: perf2.patch

Fix findbugs warnings

> 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, perf2.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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