Date: Mon, 28 Feb 2005 17:04:05 -0500 From: John Baldwin <jhb@FreeBSD.org> To: Mario Sergio Fujikawa Ferreira <lioux@FreeBSD.org> Cc: Dan Nelson <dnelson@allantgroup.com> Subject: Re: FreeBSD 5-STABLE, APIC and SCB timeouts (was Re: FreeBSD 5-STABLE, MSI KT880 , fxp and SCB timeouts) Message-ID: <200502281704.05284.jhb@FreeBSD.org> In-Reply-To: <20050226000517.99181.qmail@exxodus.fedaykin.here> References: <20050224020702.51073.qmail@exxodus.fedaykin.here> <421DF86A.7010807@alumni.rice.edu> <20050226000517.99181.qmail@exxodus.fedaykin.here>
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On Friday 25 February 2005 07:04 pm, Mario Sergio Fujikawa Ferreira wrote: > On Thu, Feb 24, 2005 at 09:52:52AM -0600, Jon Noack wrote: > > Mario Sergio Fujikawa Ferreira wrote: > > >On Wed, Feb 23, 2005 at 09:33:41PM -0600, Jon Noack wrote: > > >>On 02/23/05 21:30, Dan Nelson wrote: > > >>>In the last episode (Feb 23), Jon Noack said: > > >>>>On 02/23/05 20:06, Mario Sergio Fujikawa Ferreira wrote: > > >>>>>My last motherboard burned down to ashes so I got myself a brand > > >>>>>(after 2 weeks) new MSI KT880. I am getting some weird results. > > >>>>> > > >>>>>1) fxp intel etherxpress 10/100 network cards report SCB timeout > > >>>>>as well as achieving ridiculously low transfer rates of 600 > > >>>>>Bytes/second. Well, I got 10 KBytes/sec once but that does not count > > >>>>>since a side box gets more than 50KB/s ;-) on the same hub. Oh, I've > > >>>>>already switched hub ports, rj45 cables and fxp cards. > > After some research, it seems John Baldwin has found the > reason for the SCB timeouts. It is related to APIC being enabled on the > motherboard. It is optional for single processor systems but required for > multiprocessor systems. > > The message regarding the patch is contained in the following URL > > http://lists.freebsd.org/pipermail/freebsd-smp/2005-January/000751.html > > I have been using the aforementioned patch for the past 24 > hours. It is not perfect but I am getting some real speed (over > 10KB/s though I should be getting close to 50KB/s). However, I am > losing lots of packets when performing ping tests. > > Does anyone know anything further about it? I am willing > to test trial patches as long as I do not lose my HDD data ;-D This patch is in current@ already and on my MFC list. Do you have a system with Pentium Pro CPUs? If so, can you show me your dmesg output? -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org
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