BogoMips .... and the Cyrix 6x86MX PR200

BogoMips .... and the Cyrix 6x86MX PR200

Post by Frank Sweetse » Sun, 16 Nov 1997 04:00:00




> What does BogoMips actually measure?  I just setup linux 2.0.29 on a FIC
> 2007 motherboard with a Cyrix 686MX PR200 and it only has a rating of 157.
> I was expecting something closer to 400 like K6 200.

bogomips actually measure the time it takes your processor to do nothing.
Yes, nothing.  it just throws in a busy loop that goes for a few cycles to
get some timing values for your processor.  In terms of performance, it's
relativly meaningless, except for variances of 50% or more.  there's a
howto on bogomips at http://sunsite.unc.edu/LDP

--
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BogoMips .... and the Cyrix 6x86MX PR200

Post by William Coope » Sun, 16 Nov 1997 04:00:00


What does BogoMips actually measure?  I just setup linux 2.0.29 on a FIC
2007 motherboard with a Cyrix 686MX PR200 and it only has a rating of 157.
I was expecting something closer to 400 like K6 200.

 
 
 

BogoMips .... and the Cyrix 6x86MX PR200

Post by Rick van der Lind » Mon, 17 Nov 1997 04:00:00


Quote:>> What does BogoMips actually measure?  I just setup linux 2.0.29 on a FIC
>> 2007 motherboard with a Cyrix 686MX PR200 and it only has a rating of
157.
>> I was expecting something closer to 400 like K6 200.

>bogomips actually measure the time it takes your processor to do nothing.
>Yes, nothing.  it just throws in a busy loop that goes for a few cycles to
>get some timing values for your processor.  In terms of performance, it's
>relativly meaningless, except for variances of 50% or more.  there's a
>howto on bogomips at http://sunsite.unc.edu/LDP

Well in that case the Cyrix is much better in doing nothing as the Intel.
Mine get about 68-69 bogomips.... I wonder what's usual for a Intel P166 ???

Rick

 
 
 

BogoMips .... and the Cyrix 6x86MX PR200

Post by m.. » Mon, 17 Nov 1997 04:00:00


Well..... mine gets 59.68

thats a Iwill p55TU motherboard with 6x86L PR200

However, I have change the optimization in the bogomips make
to

CFLAGS  = -Wall -O2 -fomit-frame-pointer -finline-functions -N -s

If you read the accompanying docs you will see that this produces a
flatter responce which is more consistent across various platforms

 
 
 

BogoMips .... and the Cyrix 6x86MX PR200

Post by Marc Schlens » Mon, 17 Nov 1997 04:00:00


Rick van der Linde schrieb:

Quote:

> >> What does BogoMips actually measure?  I just setup linux 2.0.29 on a FIC
> >> 2007 motherboard with a Cyrix 686MX PR200 and it only has a rating of
> 157.
> >> I was expecting something closer to 400 like K6 200.

> >bogomips actually measure the time it takes your processor to do nothing.
> >Yes, nothing.  it just throws in a busy loop that goes for a few cycles to
> >get some timing values for your processor.  In terms of performance, it's
> >relativly meaningless, except for variances of 50% or more.  there's a
> >howto on bogomips at http://sunsite.unc.edu/LDP

> Well in that case the Cyrix is much better in doing nothing as the Intel.
> Mine get about 68-69 bogomips.... I wonder what's usual for a Intel P166 ???

> Rick

Read the BogoMIPS-howto...
 
 
 

BogoMips .... and the Cyrix 6x86MX PR200

Post by jim » Tue, 18 Nov 1997 04:00:00



Quote:> Well in that case the Cyrix is much better in doing nothing as the Intel.
> Mine get about 68-69 bogomips.... I wonder what's usual for a Intel P166 ???

Well according to the BogoMIPS mini-HOWTO
http://www.veryComputer.com/(clock
speed * 0.40) or thereabouts for an Intel Pentium... about 66-67. So
you've no problems there.

jim
--

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