Mailing List Archive

On Sat, 2005-11-12 at 15:22 +0000, Ferris McCormick wrote:

> On Fri, 11 Nov 2005, David S. Miller wrote:
>
> > From: Ferris McCormick <fmccor@gentoo.org>
> > Date: Fri, 11 Nov 2005 21:35:48 +0000
> >
> > > I'm running it on U2(2x400) currently with 2.6.14-U2-2x400-g393b0725.
> > > So far, it's doing fine, and this is on a system which has never been
> > > stable with a 2.6 kernel. With this kernel + IRQ patch, though, it's
> > > stayed up through a lot of stress tests which I would have expected
> > > would have killed it.
> > > (But uptime is only 6 hours so far).
> >
> > It would be interesting to know if that exact kernel,
> > but without the IRQ stacks patch, works just as well.
> >
> > It's nice that it's stable, but we should find out exactly
> > why :-)
> >
> If the system is still up Monday and if no one else has reported on the U2
> (and U1) stability, I'll try to make a test using Josh Grebe's (squash's)
> crashme script against that kernel with the IRQ patch removed. I can't
> give a good estimate of when the test will be possible because Monday
> morning the U2 will be helping with a fairly lengthy upgrade unrelated to
> the kernel.
>
> Regards,
> Ferris

OK, I lied. I did the tests today. Here are the results:
1. 2.6.14-U2-2x400-g393b0725 (git kernel as identified, with IRQ stack
patch): Still looks stable.

2. 2.6.14-U2-2x400-noIRQpatch-g393b0725 (same kernel w/o IRQ stack
patch): very unstable (Josh's crashme script crashes it in the untar
test during first pass).

And just for fun,

3. 2.6.14.2-U2-2x400 (2.6.14.2 as available at
http://www.kernel.org/pub/linux/kernel/v2.6/) + IRQ stack patch:
extremely unstable (apparently, more unstable than -2- above).
I have no explanation; just results. (The g393... kernel seems to be
dated November 11, and 2.14.2 also seems to be November 11: in .git/ for
g393...,
4 drwxr-xr-x 260 536 536 4096 Nov 11 05:39 objects/

I've told you more than I know, but at least a stable 2.6.14-xxx on U2
is possible.

--
Ferris McCormick (P44646, MI) <fmccor@gentoo.org>
Developer, Gentoo Linux (Sparc, Devrel)

From: Ferris McCormick <fmccor@gentoo.org>
Date: Sat, 12 Nov 2005 18:24:54 +0000

> I've told you more than I know, but at least a stable 2.6.14-xxx on U2
> is possible.

Ok, thanks :)
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