Messages in this thread | | | Date | Tue, 11 Jun 2002 20:29:35 +0200 | From | Martin Dalecki <> | Subject | Re: [PATCH] CONFIG_NR_CPUS, redux |
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Użytkownik Ruth Ivimey-Cook napisał: > On Tue, 11 Jun 2002, Randy.Dunlap wrote: > > >>On 11 Jun 2002, Robert Love wrote: >> >>| Here are the defaults I picked: >>| >>| CONFIG_NR_CPUS=32: i386, mips, parisc, ppc, sparc >> >>I don't know what is "typical" for non-x86, but for x86, why not >>use something more like a 'typical' NR_CPUS for SMP, like 8 (?)... >>why still waste all of that memory? > > > Perhaps it's just because I'm coming in late, but I cannot understand why > NR_CPUS cannot be as low as 4 by default, for all archs, and then in the > kernel boot messages, should more be found than is configured for a message is > emitted to say "reconfigure your kernel", and continue with the number it was > configured for. I personally only rarely see 2-way boxes, 4-way is pretty > rare, and anything more must surely count as very specialized. > > Let the defaults be reasonable for 99% of users (IMO 99.9%), and let the rest > have to think about config options...
Actually 2 would only make sense on Intel. Well and then you have to account for the recent HT additions so this becoumes 4. On Sparc 4 is quite common. But anything above is indeed very very rare.
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