I used the default TCP setting in Ubuntu 14.04.
-Original Message-
From: Andrey Korolyov [mailto:and...@xdel.ru]
Sent: Wednesday, April 08, 2015 1:28 AM
To: Somnath Roy
Cc: ceph-us...@lists.ceph.com; ceph-devel
Subject: Re: Preliminary RDMA vs TCP numbers
On Wed, Apr 8, 2015 at 11:17 AM, Somnath Roy wrote:
>
> Hi,
> Please find the preliminary performance numbers of TCP Vs RDMA (XIO)
> implementation (on top of SSDs) in the following link.
>
> http://www.slideshare.net/somnathroy7568/ceph-on-rdma
>
> The attachment didn't go through it seems, so, I had to use slideshare.
>
> Mark,
> If we have time, I can present it in tomorrow's performance meeting.
>
> Thanks & Regards
> Somnath
>
Those numbers are really impressive (for small numbers at least)! What are TCP
settings you using?For example, difference can be lowered on scale due to less
intensive per-connection acceleration on CUBIC on a larger number of nodes,
though I do not believe that it was a main reason for an observed TCP catchup
on a relatively flat workload such as fio generates.
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