On Thu, 4 Aug 2005 01:22:36 +0200 Christian Leber <[EMAIL PROTECTED]> wrote:
> Just a few numbers: > > I tried it on a Laptop (Dell C810, P3m 1133 mhz) and measured the power > usage with an external device and it stayed with or without patch at > 27W. (HZ was at about 28) Does your machine enter C3 state? Check the usage in /proc/acpi/processor/CPU0/power If usage is 0, unplug all USB peripherals (at least those connected to uhci controllers). Also shut down sound servers. Without C3, there won't be any power savings from lower HZ. Desktop CPUs often don't support C3 at all. Marc - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
