Re: AMD64 Local APIC Timer

From: Takeharu KATO <takeharu1219_at_ybb.ne.jp>
Date: Sun, 27 Feb 2005 08:41:02 +0900
Hi

Sorry, in fact , my patch has some problem.
If you need local apic timer AMD64 please try
peter wemm'work:

  http://people.freebsd.org/~peter/hammer.diff


> 
> The lapic timer patch seems to break something in the
> timeout(9)/untimeout(9) handling. I have a mobile athlon64 laptop, and
> have been using Fukuda Nobuhiko's acpi_ppc driver for the Cool'n'Quiet
> operation. With your patch applied, this driver no longer scales the
> CPU frequency. It seems to use timeout(9) to have the kernel call a
> polling function regularly to monitor CPU usage and scales the CPU
> speed to match the usage. This helps maintain bettery life.
> 
> The driver is at:
> http://www.spa.is.uec.ac.jp/~nfukuda/software/dist/acpi_ppc-20050210.tgz
> 
> --
> coleman kane


-- 
Takeharu KATO
Received on Sat Feb 26 2005 - 22:41:08 UTC

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