From owner-freebsd-infiniband@freebsd.org Wed Mar 30 19:47:05 2016 Return-Path: Delivered-To: freebsd-infiniband@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id B8270AE3C70 for ; Wed, 30 Mar 2016 19:47:05 +0000 (UTC) (envelope-from chrisr@spectralogic.com) Received: from mail1.bemta12.messagelabs.com (mail1.bemta12.messagelabs.com [216.82.251.4]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mail1.bemta12.messagelabs.com", Issuer "Symantec Class 3 Secure Server CA - G4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 7EBE81878 for ; Wed, 30 Mar 2016 19:47:05 +0000 (UTC) (envelope-from chrisr@spectralogic.com) Received: from [216.82.251.33] by server-4.bemta-12.messagelabs.com id 31/DE-08444-63D2CF65; Wed, 30 Mar 2016 19:47:02 +0000 X-Env-Sender: chrisr@spectralogic.com X-Msg-Ref: server-8.tower-130.messagelabs.com!1459367222!24263300!1 X-Originating-IP: [192.30.190.20] X-StarScan-Received: X-StarScan-Version: 8.11; banners=-,-,- X-VirusChecked: Checked Received: (qmail 47184 invoked from network); 30 Mar 2016 19:47:02 -0000 Received: from outmx2.spectralogic.com (HELO mail.spectralogic.com) (192.30.190.20) by server-8.tower-130.messagelabs.com with AES256-SHA encrypted SMTP; 30 Mar 2016 19:47:02 -0000 From: Chris Reeves To: "freebsd-infiniband@freebsd.org" Subject: IPOIB perforance in 11.0-current Thread-Topic: IPOIB perforance in 11.0-current Thread-Index: AQHRirovZuQEBZEolUyRyem4TLL7jA== Date: Wed, 30 Mar 2016 19:47:01 +0000 Message-ID: <1459367221119.55232@spectralogic.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.21 X-BeenThere: freebsd-infiniband@freebsd.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Infiniband on FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Mar 2016 19:47:05 -0000 Hi All, I've been trying to benchmark performance using IPOIB on FreeBSD 11.0-curre= nt, but I'm not getting the speeds I think I should. The best I'm seeing o= n a 56 Gb/s link is about 10 Gb/s. I know I won't see line speed using IPO= IB, but this performance still seems slow... I have two hosts, each with a MLX 354A card, connected to an FDR switch. T= he ports show connected at 56 Gb/s. I'm running in connected mode with an = MTU of 65520. Using iperf as a benchmark, the best performance I can get is about 10 Gb/s= one way. Using the exact same setup under Ubuntu, I've been able to get I= POIB performance of 18 Gb/s. Does anyone have any advice for improving my performance in FreeBSD? I've = tried datagram mode, but performance is slower (about 5 Gb/s) which I think= is expected. I've tried different window sizes in iperf, but haven't been= able to get any higher than 10 Gb/s. I've also turned off all the debug o= ption in my kernel config. Should I expect better performance? Are there = any other changes I can make to speed things up? Thanks very much, Chris