[jira] Resolved: (HADOOP-193) DFS i/o benchmark.

["Doug Cutting (JIRA)" <ji...@apache.org>]

     [ http://issues.apache.org/jira/browse/HADOOP-193?page=all ]
     
Doug Cutting resolved HADOOP-193:
---------------------------------

    Fix Version: 0.2
     Resolution: Fixed

I just committed this.  Thanks, Konstantin.

> DFS i/o benchmark.
> ------------------
>
>          Key: HADOOP-193
>          URL: http://issues.apache.org/jira/browse/HADOOP-193
>      Project: Hadoop
>         Type: Test

>   Components: fs
>     Reporter: Konstantin Shvachko
>      Fix For: 0.2
>  Attachments: IOBenchmark.patch
>
> DFS i/o benchmark is a map-reduce based test that measures performance of the cluster for reads and writes.
> This is an evolved version of HADOOP-72, and HADOOP-95 test.
> This test writes into or reads from a specified number of files.
> File size is specified as a parameter to the test.
> Each file is processed in a separate map task.
> The unique reducer then collects stats.
> Finally, the following information is displayed
> # read or write test
> # date and time the test finished
> # number of files processed
> # total number of bytes processed
> # throughput in mb/sec (total number of bytes / sum of processing times)
> # average i/o rate in mb/sec per file
> # standard i/o rate deviation
> I  included the test into the AllTestDriver.

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