Date: Mon, 24 Nov 2003 22:47:35 +0100 (CET)
From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
To: Bradley Chapman <kakadu_croc@yahoo.com>
cc: linux-kernel@vger.kernel.org
Subject: Re: What exactly are the issues with 2.6.0-test10 preempt?
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On Mon, 24 Nov 2003, Bradley Chapman wrote:

> Hmmm. This is what I have enabled under "Kernel hacking":
>
> #
> # Kernel hacking
> #
> CONFIG_DEBUG_KERNEL=y
> CONFIG_DEBUG_STACKOVERFLOW=y
> CONFIG_DEBUG_SLAB=y
> CONFIG_DEBUG_IOVIRT=y
> CONFIG_MAGIC_SYSRQ=y
> CONFIG_DEBUG_SPINLOCK=y
> # CONFIG_DEBUG_PAGEALLOC is not set
    ^^^^^^^^^^^^^^^^^^^^^^

Here's a candidate. I did have it on. Yes, I know it causes a slowdown -
that was for testing. I could try to double check, if disabling that
single option fixes the problem - but for that I'd need to recompile and
re-install kernel and modules... I also didn't have
CONFIG_DEBUG_STACKOVERFLOW switched on - but I don't think that could be
the reason.

> # CONFIG_DEBUG_INFO is not set
> CONFIG_DEBUG_SPINLOCK_SLEEP=y
> # CONFIG_FRAME_POINTER is not set
> CONFIG_X86_EXTRA_IRQS=y
> CONFIG_X86_FIND_SMP_CONFIG=y
> CONFIG_X86_MPPARSE=y
>
> So far, though, not a single problem -- I was playing Flash animations while
> printing a huge document without a single hiccup (I have an HP DeskJet 880C with
> very little memory, so there was a lot of in-kernel activity).

Guennadi
---
Guennadi Liakhovetski


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