Date: Wed, 26 Aug 2015 10:26:10 +0300 From: Slawa Olhovchenkov <slw@zxy.spb.ru> To: Gerrit =?koi8-r?Q?K=22uhn?= <gerrit.kuehn@aei.mpg.de> Cc: stable@freebsd.org Subject: Re: dev.ix.0.queueX.interrupt_rate Message-ID: <20150826072610.GI21849@zxy.spb.ru> In-Reply-To: <20150826083114.a30618a5142008b6c94a7659@aei.mpg.de> 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>
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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 <slw@zxy.spb.ru> > wrote about Re: dev.ix.0.queueX.interrupt_rate: > > SO> For discover poor network performance you need: > > [...] > > I am already through this, see > <https://lists.freebsd.org/pipermail/freebsd-net/2015-June/042536.html>; 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.home | help
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