Messages in this thread |  | | Date | Fri, 24 May 2002 00:28:29 +0200 | From | Vojtech Pavlik <> | Subject | Re: It hurts when I shoot myself in the foot |
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On Thu, May 23, 2002 at 10:33:05AM -0700, Mike Fedyk wrote: > On Wed, May 22, 2002 at 11:42:19PM -0600, Andreas Dilger wrote: > > On May 22, 2002 21:49 -0700, Mike Fedyk wrote: > > > On Wed, May 22, 2002 at 09:48:21PM -0600, Andreas Dilger wrote: > > > > There was a kernel patch posted about 5 or so months ago which would > > > > "handle" this setup (CPUs with the same clock speed, but different > > > > multipliers). Alan Cox said it probably was a bad idea, so it wouldn't > > > > go into the kernel, but the patch may still be usable. > > > > > > > > This is sometimes called "asymmetric multiprocessing", and the thread > > > > is at http://marc.theaimsgroup.com/?l=linux-kernel&m=98519070331478&w=4 > > > > > > I thought asymmetric multiprocessing would support CPUs with different > > > speeds. ie, 400 & 450mhz. How would you get different multipliers and same > > > Mhz when the CPUs are on the same FSB(ignoring AMD SMP where each processor > > > has an exclusive FSB, and this might be possible)? > > > > That was what I was trying to say: same FSB speed * different multipliers > > = different CPU MHZ, like what the original poster is asking about. > > I don't think it is possible to configure a motherboard to have different > > FSB speeds for two processors. > > > > Me neither, but it seems theoretically possible.
It is not, they are both on the same FSB, at least in Pentium II/III case.
-- Vojtech Pavlik SuSE Labs - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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