I used the default TCP setting in Ubuntu 14.04. -----Original Message----- From: Andrey Korolyov [mailto:andrey@xxxxxxx] Sent: Wednesday, April 08, 2015 1:28 AM To: Somnath Roy Cc: ceph-users@xxxxxxxxxxxxxx; ceph-devel Subject: Re: Preliminary RDMA vs TCP numbers On Wed, Apr 8, 2015 at 11:17 AM, Somnath Roy <Somnath.Roy@xxxxxxxxxxx> 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. ________________________________ PLEASE NOTE: The information contained in this electronic mail message is intended only for the use of the designated recipient(s) named above. If the reader of this message is not the intended recipient, you are hereby notified that you have received this message in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify the sender by telephone or e-mail (as shown above) immediately and destroy any and all copies of this message in your possession (whether hard copies or electronically stored copies). _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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