Messages in this thread | | | Subject | Re: [PATCH] 3/3 Dynamic cpufreq governor and updates to ACPI P-state driver | From | Arjan van de Ven <> | Date | Tue, 21 Oct 2003 10:38:53 +0200 |
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On Tue, 2003-10-21 at 04:56, Pallipadi, Venkatesh wrote: > Patch 3/3: New dynamic cpufreq driver (called > DemandBasedSwitch driver), which periodically monitors CPU > usage and changes the CPU frequency based on the demand.
it's all nice code and such, but I still wonder why this can't be done by a userland policy daemon. The 2.6 kernel has the infrastructure to give very detailed information to userspace (eg top etc) about idle percentages...... I didn't see anything in this driver that couldn't be done from userspace.
Note that I'm not totally against doing some of this in the kernel; I can well see the point of say, detecting an IRQ overload and based on that, go to max speed in the kernel because it's a situation where userspace doesn't even run; but the patch as is doesn't do any such advanced things... [unhandled content-type:application/pgp-signature] | |