[Gluster-users] Performance

[Mohit Anchlia]

dd of=/dev/null if=/dev/sda bs=128k count=80k iflag=direct
81920+0 records in
81920+0 records out
10737418240 bytes (11 GB) copied, 83.8293 seconds, 128 MB/s

Is it ok to use "sda" as a file in "dd" test? Thanks!

On Wed, Apr 20, 2011 at 5:24 PM, Joe Landman
<landman at scalableinformatics.com> wrote:
> On 04/20/2011 06:49 PM, Mohit Anchlia wrote:
>>
>> Numbers look very disappointing. I destroyed RAID0. Does it mean disks
>> on all the servers are bad?
>
> [...]
>
>> [root at dslg1 ~]# dd if=/dev/zero of=/dev/sda bs=128k count=80k oflag=direct
>> 81920+0 records in
>> 81920+0 records out
>> 10737418240 bytes (11 GB) copied, 572.117 seconds, 18.8 MB/s
>
> how about the read?
>
>
>
> --
> Joseph Landman, Ph.D
> Founder and CEO
> Scalable Informatics, Inc.
> email: landman at scalableinformatics.com
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>