From owner-freebsd-performance@freebsd.org Fri Feb 5 18:52:10 2016 Return-Path: Delivered-To: freebsd-performance@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 B9101A76A5C for ; Fri, 5 Feb 2016 18:52:10 +0000 (UTC) (envelope-from wolfgang.meyer@hob.de) Received: from hobex19.hob.de (hobex19.hob.de [212.185.199.31]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (Client CN "hobex19", Issuer "hobex19" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 2DCAD984; Fri, 5 Feb 2016 18:52:09 +0000 (UTC) (envelope-from wolfgang.meyer@hob.de) Received: from HOBEX22.hob.de (172.22.1.4) by hobex19.hob.de (172.25.1.31) with Microsoft SMTP Server (TLS) id 14.2.347.0; Fri, 5 Feb 2016 19:51:42 +0100 Received: from HOBEX11.hob.de ([fe80::b99f:1c54:7122:49b4]) by HOBEX22.hob.de ([::1]) with mapi id 14.02.0387.000; Fri, 5 Feb 2016 19:52:07 +0100 From: "Meyer, Wolfgang" To: 'Allan Jude' , "freebsd-performance@freebsd.org" Subject: RE: ixgbe: Network performance tuning (#TCP connections) Thread-Topic: ixgbe: Network performance tuning (#TCP connections) Thread-Index: AdFefq3DO+J8ScSLR4uotZFUcfP67wAJFIMAAAN+hIAAYzfxMP//9wkA///nTnA= Date: Fri, 5 Feb 2016 18:52:07 +0000 Message-ID: References: <56B23DEA.1060307@freebsd.org> <56B4E7B0.9010509@freebsd.org> In-Reply-To: <56B4E7B0.9010509@freebsd.org> Accept-Language: de-DE, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [172.24.71.140] old-x-esetresult: clean, is OK old-x-esetid: 46BD7B39450636371DF120 x-esetresult: clean, is OK x-esetid: 46BD7B39450636371DF120 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 05 Feb 2016 18:52:10 -0000 > -----Original Message----- > From: owner-freebsd-performance@freebsd.org [mailto:owner-freebsd- > performance@freebsd.org] On Behalf Of Allan Jude > Sent: Freitag, 5. Februar 2016 19:19 > To: freebsd-performance@freebsd.org > Subject: Re: ixgbe: Network performance tuning (#TCP connections) > > On 2016-02-05 13:05, Meyer, Wolfgang wrote: > > > > > > > As I was telling in my original message, the rxd and txd values were mo= re or > less the only ones that changed my numbers to the better when reducing > them. Not that I understood that behaviour but a double-check now > revealed that I stand corrected on this observation. Raising the value (t= o > 1024) now did not only degrade througput to my original bad numbers but t= o > the opposite slightly improved it (but only barely measurable compared to > measurement variation). Don't know what cross interaction was leading to > my original observation. > > > > Concerning pcb hash table size I only found net.inet.sctp.pcbhashsize a= nd > that had no influence. Not sure whether sctp plays a role at all in my > problem. > > > > Regards, > > Wolfgang Meyer > > > > > > I think the one you are looking for is: net.inet.tcp.tcbhashsize > > See if doubling that makes a difference. > > -- > Allan Jude Doesnt't seem to make a difference. Anyway as now system load of the cores = handling the interrupt queues seem to max out, I'll probably have to look g= iving some relief to this parameter. On Linux there was also some manual se= tting of processor affinities for the interrupt queues necessary. Regards, Wolfgang ________________________________ Follow HOB: - HOB: http://www.hob.de/redirect/hob.html - Xing: http://www.hob.de/redirect/xing.html - LinkedIn: http://www.hob.de/redirect/linkedin.html - HOBLink Mobile: http://www.hob.de/redirect/hoblinkmobile.html - Facebook: http://www.hob.de/redirect/facebook.html - Twitter: http://www.hob.de/redirect/twitter.html - YouTube: http://www.hob.de/redirect/youtube.html - E-Mail: http://www.hob.de/redirect/mail.html HOB GmbH & Co. KG Schwadermuehlstr. 3 D-90556 Cadolzburg Geschaeftsfuehrung: Klaus Brandstaetter, Zoran Adamovic AG Fuerth, HRA 5180 Steuer-Nr. 218/163/00107 USt-ID-Nr. DE 132747002 Komplementaerin HOB electronic Beteiligungs GmbH AG Fuerth, HRB 3416