From owner-freebsd-stable@freebsd.org Wed Aug 26 07:26:14 2015 Return-Path: Delivered-To: freebsd-stable@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 885D39C34AA for ; Wed, 26 Aug 2015 07:26:14 +0000 (UTC) (envelope-from slw@zxy.spb.ru) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id 6FF63F22 for ; Wed, 26 Aug 2015 07:26:14 +0000 (UTC) (envelope-from slw@zxy.spb.ru) Received: by mailman.ysv.freebsd.org (Postfix) id 6D18A9C34A9; Wed, 26 Aug 2015 07:26:14 +0000 (UTC) Delivered-To: stable@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 6CB019C34A8 for ; Wed, 26 Aug 2015 07:26:14 +0000 (UTC) (envelope-from slw@zxy.spb.ru) Received: from zxy.spb.ru (zxy.spb.ru [195.70.199.98]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 28112F21 for ; Wed, 26 Aug 2015 07:26:14 +0000 (UTC) (envelope-from slw@zxy.spb.ru) Received: from slw by zxy.spb.ru with local (Exim 4.84 (FreeBSD)) (envelope-from ) id 1ZUV62-000JPC-Da; Wed, 26 Aug 2015 10:26:10 +0300 Date: Wed, 26 Aug 2015 10:26:10 +0300 From: Slawa Olhovchenkov To: Gerrit =?koi8-r?Q?K=22uhn?= Cc: stable@freebsd.org Subject: Re: dev.ix.0.queueX.interrupt_rate Message-ID: <20150826072610.GI21849@zxy.spb.ru> References: <20150824192926.GL3158@zxy.spb.ru> <20150825095448.53458554a4ee7f96129a2d70@aei.mpg.de> <202540715.30987815.1440503749374.JavaMail.zimbra@uoguelph.ca> <20150825160441.48ed35049f5947f0dbbaa801@aei.mpg.de> <20150825164508.GH21849@zxy.spb.ru> <20150826083114.a30618a5142008b6c94a7659@aei.mpg.de> MIME-Version: 1.0 Content-Type: text/plain; charset=koi8-r Content-Disposition: inline In-Reply-To: <20150826083114.a30618a5142008b6c94a7659@aei.mpg.de> User-Agent: Mutt/1.5.23 (2014-03-12) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: slw@zxy.spb.ru X-SA-Exim-Scanned: No (on zxy.spb.ru); SAEximRunCond expanded to false X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 26 Aug 2015 07:26:14 -0000 On Wed, Aug 26, 2015 at 08:31:14AM +0200, Gerrit K"uhn wrote: > On Tue, 25 Aug 2015 19:45:08 +0300 Slawa Olhovchenkov > wrote about Re: dev.ix.0.queueX.interrupt_rate: > > SO> For discover poor network performance you need: > > [...] > > I am already through this, see > I am don't subscribe to freebsd-net. I am quick look into thread and don't see this information. For you case collet also `top -PHS` and may be you need capture nfs seession by tcpdump and analize this by wireshark (may be solaris servered synchronus write). > I just wanted to let /you/ know that my interrupt rates look similar (you > asked for that). My case is very special -- I am realy have 3Mpps syn-flood and try to mitigate this by netmap filtering. > I think there are a couple of people on the mailing lists reporting > performance issues with ix interfaces and (especially?) NFS lately. Would > be great if we could find and fix the root cause(s)... Nobody do instrumental analysis. I see only guesting. My experience talk: before solve software problem make sure no hardware problem. For this need to collect `show interface`, netstat and etc. My experience talk: before tuning make sure what tuning need and so. For this need capturing nfs session and analise by wireshark. May be just solaris on every write do sync.