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SubjectRe: PROBLEM: Performance drop
On Sat, Jul 07, 2012 at 03:40:58PM +0100, Jason Vas Dias wrote:
> I can confirm that the AMD Turion X2 2.2Ghz HP Compaq 6715b
> "business" x86_64 k8 dual-core laptops circa 2007
> DO get stuck in 800Khz mode and cannot switch out of it after booting
> the "stable" "v3.4.4" tagged kernel.
>
> I followed the containing post and reverted commit
> ff74ae50f01ee67764564815c023c362c87ce18b :
>
> Commit d51cdad33bb5bb370c05129f7c7f3a16a55eff40
> Author: root <root@jvdspc.localdomain>
> Date: Fri Jul 6 18:57:03 2012 +0000
>
> Revert "ACPI: Evaluate thermal trip points before reading temperature"
>
> This reverts commit 9bcb8118965ab4631a65ee0726e6518f75cda6c5.
>
> commit ff74ae50f01ee67764564815c023c362c87ce18b
> Author: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Date: Fri Jun 22 11:37:50 2012 -0700
>
> And wow ! what a difference - back to a circa 2007 machine versus a
> circa 1987 machine.
>
> Not too many of us left around trying to run the latest version of
> linux on nearly 5-year-old hardware I guess, but still -
> please can you restore correct Linux cpufreq & thermal operation on
> old-style AMD k8 CPUs ?
> They do seem to depend on the temperature being set BEFORE 1st entry .
>
> Thanks & Regards,
> Jason Vas Dias (a Software Engineer) <jason.vas.dias@gmail.com>

Any reason you didn't include the original developers of the
9bcb8118965ab4631a65ee0 patch?

Matthew, Len, any ideas?

greg k-h


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