Re: dynticks + iptables almost stops the boot process [was: Re: 2.6.20-rc6-mm3]

On Tue, Feb 06, 2007 at 05:48:26PM +0100, Ingo Molnar wrote:

Mattia,

* Mattia Dongili <malattia@xxxxxxxx> wrote:

I have it halfways reproducible now and I'm working to find the root
cause. Thanks for providing the info.

Great, I'm obviously available to test any patch :)

Could you try the patch below? The RCU serialization code (a rare call
but can be common in some types of setups) has a nasty implicit
dependency on the HZ tick - which until now was a hidden wart but became
an explicit bug under dynticks. Maybe this is what is slowing down your
box.

No, not this. Anyway the last patch Thomas forwarded does fix the
problem.

By the way, I have all the patches I received stacked up, if you want me
to test some different combination, just ask.

Thanks
--
mattia
:wq!
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