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
1 Chini, Georg wrote:
2 >
3 >
4 > Ferris McCormick wrote:
5 >
6 >> On Wed, 2007-03-21 at 10:53 +0100, bertrand wrote:
7 >>
8 >>
9 >>> Ferris McCormick a écrit :
10 >>>
11 >>>> -----BEGIN PGP SIGNED MESSAGE-----
12 >>>> Hash: SHA1
13 >>>>
14 >>>>
15 >>
16 >> --- snip ---
17 >>
18 >>
19 >>
20 >>>>> JKB
21 >>>>>
22 >>>> This is a problem with U2+kernel-2.6.x generally. Unfortunately, I
23 >>>> have no suggestions nor do I have a solution. I just grit my teeth and
24 >>>> stay with the kernel-2.4.x series, which are completely stable on U2,
25 >>>> so far as I can tell.
26 >>>>
27 >>> What is your U2 configuration ? I have only one U2 and I cannot
28 >>> test on this station because it's a mail server :-( In fact, I think
29 >>> it should be interesting to know if this trouble come from SMP, ESP
30 >>> or Sbus support. It is impossible to build a kernel with debug
31 >>> information (it does not boot due to a address not aligned...), but I
32 >>> have tested the same kernel on a U1E (with the same ESP chip and two
33 >>> additional HappyMeal Ethernet cards on Sbus slots). It perfectly
34 >>> works. Can you try a 2.6 on U2 without SMP support ?
35 >>>
36 >>> Regards,
37 >>>
38 >>> JKB
39 >>>
40 >>
41 >> I have 2 U2's; U2(2x300), U2(2x400). The SMP doesn't matter, though; U2
42 >> with 2.6.x will freeze eventually even if a uniprocessor. SMP just lets
43 >> it fail more quickly. Problem is believed to be SCSI or Sbus, I think,
44 >> but I don't know that anyone is sure. The kernel people have known
45 >> about this for well over a year, but no fix.
46 >>
47 >> For more current information, you might ask squash@g.o or
48 >> weeve@g.o --- I haven't tried 2.6 on U2 for a while because no
49 >> one has claimed to have a fix for this problem. (Gentoo spent a lot of
50 >> time on this freeze a few months ago, but no satisfaction. I am sure,
51 >> though, that we ruled out SMP as the problem.)
52 >>
53 >>
54 >>
55 >>> -
56 >>>
57 >> Regards,
58 >>
59 >>
60 >>
61 > Hi,
62 >
63 > I'm running 2.6.20-rc5 on my ultra2 (2x300) for a few weeks now and have
64 > not
65 > observed any freezes at all. I attach my config, maybe you can find some
66 > hint
67 > what causes the problem.
68 >
69 > Regards
70
71 That doesn't really mean much. My U2 ran for 45 days on 2.6.12 before locking up
72 solid. It was killed by a nightly rsync of the Gentoo portage tree. It had done
73 the same sync 44 times previously, but that time took it out. With 2.6.17, it
74 hard locked the first time I synced the tree on a new install, but that was a
75 full sync instead of just a small subset like with 2.6.12.
76
77 --
78 Andrew Gaffney http://dev.gentoo.org/~agaffney/
79 Gentoo Linux Developer Installer Project
80 --
81 gentoo-sparc@g.o mailing list