Lustre discuss - May 2013 - Query on improving throughput

Dear All,

We have a small setup of lustre with 7 OSTs on 8gb FC . We have kept one
OST per FC port.  We have lustre 2.3 with CentOS 6.3. There are 32 clients
which access this over FDR IB.  We can  achieve more than 1.3GB/s
throughput using IOR, without cache.  Which is roughly 185MB/s per OST.  We
wanted to know if this is normal.  Should we expect more from 8gb FC port.
OSTs are on 8+2 RAID6 .

Thanks and Regards
Dilip G Sathaye
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What is the raw performance of your pure storage system?

Next step - run obdfilter-survey on your installation - this will be
your storage performance baseline under lustre.

Next step - run IOR on lustre clients again.

Compare those 3 numbers. You will not achieve more from lustre clients
then from storage performance if lustre servers are fast enough.

P




On Mon, May 27, 2013 at 7:36 AM, Dilip Sathaye
<dsathaye-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> Dear All,
>
> We have a small setup of lustre with 7 OSTs on 8gb FC . We have kept one
OST
> per FC port.  We have lustre 2.3 with CentOS 6.3. There are 32 clients
which
> access this over FDR IB.  We can  achieve more than 1.3GB/s throughput
using
> IOR, without cache.  Which is roughly 185MB/s per OST.  We wanted to know
if
> this is normal.  Should we expect more from 8gb FC port. OSTs are on 8+2
> RAID6 .