From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steve Wise Subject: Re: nfs-rdma performance Date: Thu, 12 Jun 2014 15:00:03 -0500 Message-ID: <539A06C3.1030909@opengridcomputing.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Mark Lehrer , linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-rdma@vger.kernel.org On 6/12/2014 2:54 PM, Mark Lehrer wrote: > Awesome work on nfs-rdma in the later kernels! I had been having > panic problems for awhile and now things appear to be quite reliable. > > Now that things are more reliable, I would like to help work on speed > issues. On this same hardware with SMB Direct and the standard > storage review 8k 70/30 test, I get combined read & write performance > of around 2.5GB/sec. With nfs-rdma it is pushing about 850MB/sec. > This is simply an unacceptable difference. > > I'm using the standard settings -- connected mode, 65520 byte MTU, > nfs-server-side "async", lots of nfsd's, and nfsver=3 with large > buffers. Does anyone have any tuning suggestions and/or places to > start looking for bottlenecks? What RDMA device? Steve. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html