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

[Robert Hajime Lanning]

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...
http://joejulian.name/blog/should-i-use-stripe-on-glusterfs/

-- 
Mr. Flibble
King of the Potato People