Re: Re: ACPI source patches updated (20021101)

[Pavel Machek <pavel-+ZI9xUNit7I@public.gmane.org>]

Hi!

> >>>>> "Robert" == Robert Moore writes:
>  Robert> We have discovered a possible situation where an Acquire() with
>  Robert> an infinite wait (0xFFFF) could in fact timeout without
>  Robert> obtaining the mutex.  This may be the root of the problem you
>  Robert> are seeing.
> 
>  Robert> Andy is preparing a patch.  
> 
> Great!
> 
> On a related note, I'm seeing situations where ACPI starts to eat my CPU
> time. It has to be related to the mutex issue -- but perhaps should be
> fixed independently.
> 
> In most cases I see a kacpidpc thread that eats CPU, but sometimes the
> machine slows down _A LOT_ (windows being redrawn slowly, etc), even
> when kacpidpc is not visibly running. In my case, it's always related to
> fans -- whenever ACPI tries to manage them, I run into problems and
> eventually have to reboot.

Maybe thermal throttling is going on? Or machine overheats and bios
slows down to save it.
								Pavel

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