Date: Wed, 17 Dec 2008 00:06:30 +0100 From: Marius Strobl <marius@alchemy.franken.de> To: Ruben de Groot <fbsd-sparc64@bzerk.org> Cc: sparc64@FreeBSD.org Subject: Re: Panic in 7.1-PRERELEASE (was: Re: kgdb on sparc64) Message-ID: <20081216230630.GY15733@alchemy.franken.de> In-Reply-To: <20081216140311.GA21651@ei.bzerk.org> References: <20081103221111.GA8256@alchemy.franken.de> <20081105195630.GA52831@ei.bzerk.org> <20081109183232.GC76319@alchemy.franken.de> <20081119080344.GA96293@ei.bzerk.org> <20081119220317.GP64456@alchemy.franken.de> <20081120054711.GA11035@ei.bzerk.org> <20081201211806.GF82355@alchemy.franken.de> <20081202115653.GA90256@ei.bzerk.org> <20081209213613.GA21283@alchemy.franken.de> <20081216140311.GA21651@ei.bzerk.org>
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On Tue, Dec 16, 2008 at 03:03:11PM +0100, Ruben de Groot wrote: > On Tue, Dec 09, 2008 at 10:36:13PM +0100, Marius Strobl typed: > > On Tue, Dec 02, 2008 at 12:56:53PM +0100, Ruben de Groot wrote: > > > On Mon, Dec 01, 2008 at 10:18:06PM +0100, Marius Strobl typed: > > > > On Thu, Nov 20, 2008 at 06:47:11AM +0100, Ruben de Groot wrote: > > > > > > > > > > Thanks. I've moved all websites away from this machine, so it's available for any > > > > > further tests to help find a solution. > > > > > > > > > > > > > Could you please give the patch at: > > > > http://people.freebsd.org/~marius/dc_bitbang_delay.diff > > > > a try? It's based on information gained from other drivers for > > > > the same chips that there should be an delay after every write > > > > when bit-banging the MII, which hopefully solves the bus wedging > > > > you're seeing. So far I didn't manage to reproduce the problem > > > > though, so I can't test whether the patch makes an actual > > > > difference either. > > > > > > Thanks for looking into this. > > > Running with this patch right now. It'll take some time to conclude if this > > > fixes the issue, as the panics normally happen only once every 2-3 days. > > > > > > > How is it doing so far? > > Yes, well, the server has been running for exactly 14 days with your patch now > without any troubles. So today I switched the websites back from my -current > machine as the latter was developing some (unrelated) problems. > > So I'd say the issue looks like it's solved. Thanks again! > Could you please switch to the version that is in 7-STABLE (if_dc.c 1.192.2.6/if_dcreg.h 1.54.2.3 or r186137 if you use svn) now? Relative to the version you're running it has an edge case fixed and isn't as inefficient with the register access. I don't expect regressions from this version compared to the old patch but nevertheless it would be great to use the remaining time until 7.1-RELEASE for verifying whether what's in the tree now actually also solves the problem you were seeing. Marius
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