[Gluster-users] striping & read-ahead & volfiles

Robert Hajime Lanning lanning at lanning.cc
Tue Feb 19 22:42:58 UTC 2013

On 02/19/13 01:10, ruben malchow wrote:
> i thought i could achieve this by doing striping. in this scenarion, i would do stripe+replicate, with nodes 1-5 acting as
> a stripe set and nodes 6-10 acting as it's replica.
> with this setup, i would expect something in the range of 300-500MByte/s … but actually, i see something in the range
> of 100-200.
> i assume that i am doing something wrong - either in the way i deal with block sizes and/or with the way i try to use read-ahead.
> i was hoping read-ahead could be configured to start preparing the next stripe while the first one is reading and so on
> as a remedy for latency issues - is this correct?

Striping isn't what you think it is...

Mr. Flibble
King of the Potato People

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