Re: Terrible interactivity with 2.6.0-t9-mm3

Prakash K. Cheemplavam
2003-11-17T22:47:58Z

john stultz wrote:
> On Mon, 2003-11-17 at 11:46, Thomas Schlichter wrote:
>
>>On Monday 17 November 2003 14:12, Prakash K. Cheemplavam wrote:
>>
>>>Ronny V. Vindenes wrote:
>>>
>>>>I've found that neither linus.patch nor
>>>>context-switch-accounting-fix.patch is causing the problem, but rather
>>>>acpi-pm-timer-fixes.patch & acpi-pm-timer.patch
>>>>
>>>>With these applied my cpu (athlon64) is detected as 0.0Mhz, bogomips
>>>>drops to 50% and anything cpu intensive destroys interactivity. Revert
>>>>them and performance is back at -mm2 level.
>>>
>>>Yup, works for me too. Reverting those patches and my machine is smooth
>>>again. :)
>
>
> Not configuring the ACPI PM time source in should also work as well.

> You're correct, I forgot to initialize cpu_khz in the ACPI PM timesource
> init code. This patch fixes that.

Well I applied your patch without the ones from Thomas Schlichter. Was
is intended like that or should it be on top of Thomas patches?

I haven't tested thouroughly, but on the first impression your patch
didn't make things really better, that's why I stoped testing. I just
did following test:

Running prime95 as task taking 100% CPU) and started up mozilla and
mailer. This took nearly endlessly. Deaktivating ACPI timer and things
are fast again, ie. starting mozilla is like no background task is
runnig. I dunno if it is a not 100% working patch or if it is Nick's
scheduler, which I am using.

Prakash