"Julia A. Case" <[EMAIL PROTECTED]> wrote:
> Thanks to all that sent me email about multi cpu mother boards... One
> more question... I've used linux quite a bit with dual CPU systems, but
> I'm thinking about a motherboard that supports 4 CPU's... I've heard
> rumor that you just don't get a linear increase in computing power when
> you go over 2 CPU's...
True, but you don't get linear from 1 to 2 either.
And the rumor I'd heard was that you don't lose much of the multiplier till
you reach like 16 cpus.... (If thats really just a rumor I'm sure we'll
get corrected here real soon now ;-)
> That the task scheduler doesn't make efficent use
> of the extra CPU's...
That's a new one on me. Maybe thats true of the 'other' OS, but that's not
my understanding on linux.
> Also is it possible to do something like dedicate
> a single CPU to just doing filesystem I/O?
No. Then it would not be *S*MP...
> That would make using
> software RAID almost as fast as using a hardware RAID controller.
Actually, since Linux can (I think) share KERNEL tasks across multiple cpus
as well as the user tasks, that you get this bonus by using 2 cpus anyhow....
Again, standing by for correction ;-)
rc
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