Messages in this thread | | | Subject | RE: [patch] prefer TSC over PM Timer | Date | Wed, 17 Nov 2004 07:08:27 -0800 | From | "Pallipadi, Venkatesh" <> |
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>-----Original Message----- >From: Dmitry Torokhov [mailto:dmitry.torokhov@gmail.com] >Sent: Wednesday, November 17, 2004 6:20 AM >To: dean gaudet >Cc: Pallipadi, Venkatesh; john stultz; lkml >Subject: Re: [patch] prefer TSC over PM Timer > >On Tue, 16 Nov 2004 17:50:42 -0800 (PST), dean gaudet ><dean-list-linux-kernel@arctic.org> wrote: >> on a tangent... has the local apic timer ever been >considered? it's fixed >> rate, and my measurements show it in the same performance >ballpark as TSC. >> > >At least Dell laptops will die horrible death if you enable lapic, >probably others. >
Hmm... And local APIC timer comes with its own set of problems http://bugme.osdl.org/show_bug.cgi?id=2560
While in C3, we don't get local APIC timer interrupts.
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