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[ale] BogoMips uselsess?
- Subject: [ale] BogoMips uselsess?
- From: gstone at mediaone.net (Glenn R. Stone)
- Date: Tue, 04 May 1999 23:11:13 -0400
Byron A Jeff wrote:
>
> >
> >
> > I just built out a k6-2-400. It reports 700+ bogomips. Looks nice, but
> > my Dual-P2-300 reports 600. Should I be concerned that a 400 is faster
> > than mine?
>
> Bogo is derived from Bogus. The numbers only apply in the same chip families.
> Since the P2 is completely different than the k6-2 the bogomip numbers cannot
> in any way, shape, or form be related.
I have seen a K6-2-300 outcompile a PII-350... but the idea that one K6-2/400
beats a PAIR of anything in the same class is just what Byron said. Bogus.
Essentially it's a timing loop, and it's probably only getting a look at
one of the two Intels...
Which leads me to the following related question: is GNU make(1) smart enough
to take advantage of SMP? I remember at GaTech we had a Sequent Symmetry we
could kick off make -P and snarf all ten processors on the thing.... emacs
compiled in a trice. One would love to turn a quad-Xeon loose on the kernel
recompile.... can you say, way sub-sixty-seconds?
-- Glenn