> There was such a thing in 386BSD and FreeBSD1.0
I remember no such thing doing a 'bogomips' to compare against Linux.
Certainly not in 386BSD.
Nate
>
> I certainly thing it was a worth-while thing.
> I'd try make the loop as similar to the Linux one so that they are
> comparable.
>
> On Thu, 2 Sep 1999, Nick Sayer wrote:
>
> > Linux generates a meric of CPU performance as a byproduct of calibrating
> > a delay loop.
> > We don't require doing any such thing, and so adding it would be purely
> > cosmetic.
> > However, I allege that cosmetic things aren't in and of themselves evil,
> > so long as
> > they don't break anything in the process.
> >
> > I would like to generate a number that will hopefully be reasonably
> > compatible with
> > the one Linux spits out. The best method I have come up with is to have
> > a similar
> > (the same?) count down loop in assembler. Have it count down from
> > 1,000,000 and
> > see how much nanotime() has gone by. NANSPERSEC/nansused = bogomips.
> > A 1 bogomips machine will take an extra second to do this (anything
> > likely to be
> > even able to run FreeBSD should exceed 1 BM - yes, ha ha), and a kBM CPU
> >
> > can do it in 1 ms. Perhaps in the future a prescaler might be required,
> > but
> > this whole thing is just really chrome anyway.
> >
> > Would anyone scream and projectile-vomit if I added this to identcpu.c?
> >
> >
>
>
>
> To Unsubscribe: send mail to [EMAIL PROTECTED]
> with "unsubscribe freebsd-hackers" in the body of the message
>
To Unsubscribe: send mail to [EMAIL PROTECTED]
with "unsubscribe freebsd-hackers" in the body of the message
