[Gluster-devel] Striping.
Anand Avati
avati at zresearch.com
Thu Nov 29 18:13:24 UTC 2007
Chris,
you will see the help of stripe when you perform IO where disk head is the
bottleneck. For example try to dd a file > 2x RAM size. Then dd with stripe.
you will note that the 'rock bottom throughput' is lifted higher with
stripe. It also helps when one file is accessed by a LOT of clients so that
one machine's IO does not become a bottleneck.
avati
2007/11/29, Chris Johnson <johnson at nmr.mgh.harvard.edu>:
>
> Hi again,
>
> So I did my dd read test of my 24MB file on a simple two brick
> stripe. Nothing fancy. Two bricks and the stripe define on the server
> side. Client side mounts the remote stripe. Default block size,
> 128KB.
>
> No difference between that and my single brick test as far as
> time goes. What's striping supposed to get me? I thought it was
> drives heads. Or am I missing something again?
>
> -------------------------------------------------------------------------------
>
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