Date: Thu, 1 Apr 2004 17:58:57 +0700 From: Alexey Dokuchaev <danfe@nsu.ru> To: Ruslan Ermilov <ru@freebsd.org> Cc: Nate Lawson <nate@root.org> Subject: Re: cvs commit: src/sys/pci if_ste.c Message-ID: <20040401105857.GA72284@regency.nsu.ru> In-Reply-To: <20040401064241.GA18644@ip.net.ua> References: <20040331211028.37B5016A4E2@hub.freebsd.org> <20040331134609.N90425@root.org> <20040401064241.GA18644@ip.net.ua>
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On Thu, Apr 01, 2004 at 09:42:41AM +0300, Ruslan Ermilov wrote: > On Wed, Mar 31, 2004 at 01:47:16PM -0800, Nate Lawson wrote: > > On Wed, 31 Mar 2004, Ruslan Ermilov wrote: > > > Modified files: > > > sys/pci if_ste.c > > > Log: > > > Under a heavy RX load, at least with D-Link DFE-550TX adapters, > > > the driver's RX ring head may fall behind the chip, causing the > > > stuck traffic, disordered packets, etc. Work around this by > > > adopting the technique of resyncing RX head used in dc(4) and > > > xl(4) drivers, but do it in a slightly different place to reduce > > > the number of resyncs needed. > > > > > > Also, set the NIC's RX polling period to a more meaningful value, > > > to stop overloading the PCI bus (this also reduces the number of > > > resyncs by a factor of 3 or more in a long run; the actual number > > > is very dependent on a nature of the traffic). > > > > > > Maintain the statistics counter as the hw.ste_rxsyncs sysctl. > > > > This pollutes the toplevel hw sysctl space. Please move it to > > hw.ste.rxsyncs or better, debug.*. > > > Seems I followed the bad practice from dc(4) and fxp(4). I will > move it to hw.ste, thanks. Care to fix this "bad practice" in dc(4) and fxp(4) as well? :) Or should we wait for their maintainers, or possibly filling the PR ? ./danfe
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