Gentoo Archives: gentoo-sparc

From: Andrew Gaffney <agaffney@g.o>
To: "Chini, Georg" <georg.chini@××.com>
Cc: sparclinux@×××××××××××.org, Gentoo Sparc <gentoo-sparc@l.g.o>
Subject: [gentoo-sparc] Re: [Repost] Ultra2 SMP freezes with heavy disk I/O
Date: Wed, 21 Mar 2007 13:49:53
Message-Id: 460137DA.8030808@gentoo.org
Chini, Georg wrote:
> > > Ferris McCormick wrote: > >> On Wed, 2007-03-21 at 10:53 +0100, bertrand wrote: >> >> >>> Ferris McCormick a écrit : >>> >>>> -----BEGIN PGP SIGNED MESSAGE----- >>>> Hash: SHA1 >>>> >>>> >> >> --- snip --- >> >> >> >>>>> JKB >>>>> >>>> This is a problem with U2+kernel-2.6.x generally. Unfortunately, I >>>> have no suggestions nor do I have a solution. I just grit my teeth and >>>> stay with the kernel-2.4.x series, which are completely stable on U2, >>>> so far as I can tell. >>>> >>> What is your U2 configuration ? I have only one U2 and I cannot >>> test on this station because it's a mail server :-( In fact, I think >>> it should be interesting to know if this trouble come from SMP, ESP >>> or Sbus support. It is impossible to build a kernel with debug >>> information (it does not boot due to a address not aligned...), but I >>> have tested the same kernel on a U1E (with the same ESP chip and two >>> additional HappyMeal Ethernet cards on Sbus slots). It perfectly >>> works. Can you try a 2.6 on U2 without SMP support ? >>> >>> Regards, >>> >>> JKB >>> >> >> I have 2 U2's; U2(2x300), U2(2x400). The SMP doesn't matter, though; U2 >> with 2.6.x will freeze eventually even if a uniprocessor. SMP just lets >> it fail more quickly. Problem is believed to be SCSI or Sbus, I think, >> but I don't know that anyone is sure. The kernel people have known >> about this for well over a year, but no fix. >> >> For more current information, you might ask squash@g.o or >> weeve@g.o --- I haven't tried 2.6 on U2 for a while because no >> one has claimed to have a fix for this problem. (Gentoo spent a lot of >> time on this freeze a few months ago, but no satisfaction. I am sure, >> though, that we ruled out SMP as the problem.) >> >> >> >>> - >>> >> Regards, >> >> >> > Hi, > > I'm running 2.6.20-rc5 on my ultra2 (2x300) for a few weeks now and have > not > observed any freezes at all. I attach my config, maybe you can find some > hint > what causes the problem. > > Regards
That doesn't really mean much. My U2 ran for 45 days on 2.6.12 before locking up solid. It was killed by a nightly rsync of the Gentoo portage tree. It had done the same sync 44 times previously, but that time took it out. With 2.6.17, it hard locked the first time I synced the tree on a new install, but that was a full sync instead of just a small subset like with 2.6.12. -- Andrew Gaffney http://dev.gentoo.org/~agaffney/ Gentoo Linux Developer Installer Project -- gentoo-sparc@g.o mailing list