From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gandalf Corvotempesta Subject: Re: Slow performance with librspreload.so Date: Tue, 3 Sep 2013 11:17:55 +0200 Message-ID: References: <1828884A29C6694DAF28B7E6B8A8237388CA937E@ORSMSX109.amr.corp.intel.com> <1828884A29C6694DAF28B7E6B8A8237388CA96AD@ORSMSX109.amr.corp.intel.com> <1828884A29C6694DAF28B7E6B8A8237388CA9865@ORSMSX109.amr.corp.intel.com> <1828884A29C6694DAF28B7E6B8A8237388CA9C6B@ORSMSX109.amr.corp.intel.com> <1828884A29C6694DAF28B7E6B8A8237388CA9D8A@ORSMSX109.amr.corp.intel.com> <1828884A29C6694DAF28B7E6B8A8237388CAA11B@ORSMSX109.amr.corp.intel.com> <003701cea717$28616140$792423c0$@soft-forge.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Return-path: In-Reply-To: Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Rupert Dance Cc: "Hefty, Sean" , "linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" List-Id: linux-rdma@vger.kernel.org 2013/9/1 Gandalf Corvotempesta : > What is strange to me is that rsocket is slower than IPoIB and limited > to 10Gbit more or less. With IPoIB i'm able to reach 12.5 Gbit qperf is giving the same strange speed: FROM NODE1 to NODE2: $ sudo qperf -ub 77.95.175.106 ud_lat ud_bw ud_lat: latency = 12.5 us ud_bw: send_bw = 12.5 Gb/sec recv_bw = 12.5 Gb/sec FROM NODE1 TO NODE2, slower and with more latency than remote host! $ sudo qperf -ub 172.17.0.1 ud_lat ud_bw ud_lat: latency = 13.8 us ud_bw: send_bw = 11.9 Gb/sec recv_bw = 11.9 Gb/sec how can I check if this is due to an hardware bottleneck ? CPU and RAM are good. -- 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