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Date: Mon, 1 Oct 2007 18:33:40 +0400 From: "Mikhail Kshevetskiy" <mikhail.kshevetskiy@...il.com> To: "Thomas Gleixner" <tglx@...utronix.de> Cc: "Andi Kleen" <andi@...stfloor.org>, linux-kernel@...r.kernel.org Subject: Re: Fwd: x86_64 and AMD with C1E 2007/10/1, Thomas Gleixner <tglx@...utronix.de>: > On Mon, 1 Oct 2007, Mikhail Kshevetskiy wrote: > > No, it boot and work normally. The only thing i bother, is the > > additional 260 timer interrupts per seconds. > > Here is short result: > > > > c1e enabled: > > -- power consumption about 23 watts > > -- there is only C1 power state enabled > > -- there are about 260 timer interrupts per seconds > > tested with x86_64(2.6.22, 2.6.23-rc8, 2.6.23-rc8-hrt1 ), > > i386(2.6.21, 2.6.22, 2.6.23-rc5-hrt1) > > > > c1e disabled: > > -- power consumption about 27 watts > > -- there are no any power state enabled (including C1) > > -- there are no additional 260 timer interrupts per seconds > > tested with 2.6.23-rc6-hrt1/x86_64. > > > > I want to reduce the power consumption of my notebook. I see the 2 possibility: > > -- remove 260 additional timer interrupts (c1e enabled case ) > > There is work in progress on a patch, which allows to utilize the hpet > timers as per cpu timers. This should solve the problem. Be patient. I can test it on i386/x86_64 architectures. Mikhail Kshevetskiy - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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