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>
next in thread | previous in thread | raw e-mail | index | archive | help
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.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20150826072610.GI21849>