From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gandalf Corvotempesta Subject: Re: Slow performance with librspreload.so Date: Fri, 30 Aug 2013 10:23:21 +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> 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: "Hefty, Sean" , "linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" List-Id: linux-rdma@vger.kernel.org 2013/8/30 Gandalf Corvotempesta : > By the way, moving the HBA on the second slot, brought me to 12Gbps on > both hosts. This is great: $ sudo LD_PRELOAD=/usr/local/lib/rsocket/librspreload.so iperf -c 172.17.0.2 ------------------------------------------------------------ Client connecting to 172.17.0.2, TCP port 5001 TCP window size: 128 KByte (default) ------------------------------------------------------------ [ 3] local 172.17.0.1 port 34108 connected with 172.17.0.2 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 12.2 GBytes 10.5 Gbits/sec $ sudo LD_PRELOAD=/usr/local/lib/rsocket/librspreload.so iperf -c 172.17.0.2 -P 2 ------------------------------------------------------------ Client connecting to 172.17.0.2, TCP port 5001 TCP window size: 128 KByte (default) ------------------------------------------------------------ [ 4] local 172.17.0.1 port 55323 connected with 172.17.0.2 port 5001 [ 3] local 172.17.0.1 port 36579 connected with 172.17.0.2 port 5001 [ ID] Interval Transfer Bandwidth [ 4] 0.0-10.0 sec 7.46 GBytes 6.41 Gbits/sec [ 3] 0.0-10.0 sec 7.46 GBytes 6.41 Gbits/sec [SUM] 0.0-10.0 sec 14.9 GBytes 12.8 Gbits/sec with 2 parallel connection i'm able to reach "rate" speed with iperf, the same speed archived with rstream. Is iperf affected by IPoIB MTU size when used with librspreload.so ? -- 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