Hi Roy, I already scan your merged codes about "fdcache" and "optimizing for lfn_find/lfn_open", could you give some performance improvement data about it? I fully agree with your orientation, do you have any update about it?
As for messenger level, I have some very early works on it(https://github.com/yuyuyu101/ceph/tree/msg-event), it contains a new messenger implementation which support different event mechanism. It looks like at least one more week to make it work. On Fri, Aug 29, 2014 at 5:48 AM, Somnath Roy <somnath....@sandisk.com> wrote: > Yes, what I saw the messenger level bottleneck is still huge ! > Hopefully RDMA messenger will resolve that and the performance gain will be > significant for Read (on SSDs). For write we need to uncover the OSD > bottlenecks first to take advantage of the improved upstream. > What I experienced that till you remove the very last bottleneck the > performance improvement will not be visible and that could be confusing > because you might think that the upstream improvement you did is not valid > (which is not). > > Thanks & Regards > Somnath > -----Original Message----- > From: Andrey Korolyov [mailto:and...@xdel.ru] > Sent: Thursday, August 28, 2014 12:57 PM > To: Somnath Roy > Cc: David Moreau Simard; Mark Nelson; ceph-users@lists.ceph.com > Subject: Re: [ceph-users] [Single OSD performance on SSD] Can't go over 3, 2K > IOPS > > On Thu, Aug 28, 2014 at 10:48 PM, Somnath Roy <somnath....@sandisk.com> wrote: >> Nope, this will not be back ported to Firefly I guess. >> >> Thanks & Regards >> Somnath >> > > Thanks for sharing this, the first thing in thought when I looked at this > thread, was your patches :) > > If Giant will incorporate them, both the RDMA support and those should give a > huge performance boost for RDMA-enabled Ceph backnets. > > ________________________________ > > 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@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com -- Best Regards, Wheat _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
