From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Rupert Dance" Subject: RE: Slow performance with librspreload.so Date: Sat, 31 Aug 2013 07:34:55 -0400 Message-ID: <000c01cea63e$1e20eae0$5a62c0a0$@soft-forge.com> 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> <00ac01cea5ad$8c e92d20$a6bb8760$@soft-forge.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Content-Language: en-us Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: 'Gandalf Corvotempesta' Cc: "'Hefty, Sean'" , linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-rdma@vger.kernel.org The Vendor ID indicates that this is a Voltaire card which probably means it is an older card. Some of the early Mellanox based cards did not support anything bigger than 2048. 00-08-F1 (hex) Voltaire 0008F1 (base 16) Voltaire 9 Hamenofim st. Herzelia 46725 ISRAEL Checking for FW updates cannot hurt but you may well be restricted to 2048 -----Original Message----- From: Gandalf Corvotempesta [mailto:gandalf.corvotempesta-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org] Sent: Saturday, August 31, 2013 5:21 AM To: Rupert Dance Cc: Hefty, Sean; linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Subject: Re: Slow performance with librspreload.so 2013/8/30 Rupert Dance : > One way to set or check mtu is with the ibportstate utility: > > Usage: ibportstate [options] [] > Supported ops: enable, disable, reset, speed, width, query, down, arm, > active, vls, mtu, lid, smlid, lmc I've tried but max MTU is 2048 on one device: $ sudo ibv_devinfo hca_id: mthca0 transport: InfiniBand (0) fw_ver: 4.7.600 node_guid: 0008:f104:0398:14cc sys_image_guid: 0008:f104:0398:14cf vendor_id: 0x08f1 vendor_part_id: 25208 hw_ver: 0xA0 board_id: VLT0040010001 phys_port_cnt: 2 port: 1 state: PORT_ACTIVE (4) max_mtu: 2048 (4) active_mtu: 2048 (4) sm_lid: 1 port_lid: 2 port_lmc: 0x00 link_layer: InfiniBand any workaround? Maybe a firmware update ? -- 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