Linux 2.4.[01] and BogoMips

Linux 2.4.[01] and BogoMips

[Pat Verner]

I have Linux running on several older Pentium machines - Pentium -166 MHz 
and Pentium - 120 Mhz.

Under kernel 2.2.13+ these machines report a BogoMips of 66 or 47 
respectively;  suddenly under kernel 2.4.[01] the speed is suddenly 
reported as 332 and 238 respectively.

Has there been a change in the definition of "BogoMips"?

Regards
=Pat
--
Pat Verner				E-Mail:  pat@isis.co.za
           Isis Information Systems (Pty) Ltd
           PO Box 281, Irene, 0062, South Africa
Phone: +27-12-667-1411	      	Fax: +27-12-667-3800

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Re: Linux 2.4.[01] and BogoMips

[Øyvind Jægtnes]

Pat Verner <pat@isis.co.za> writes:

> I have Linux running on several older Pentium machines - Pentium -166
> MHz and Pentium - 120 Mhz.
> 
> Under kernel 2.2.13+ these machines report a BogoMips of 66 or 47
> respectively;  suddenly under kernel 2.4.[01] the speed is suddenly
> reported as 332 and 238 respectively.
> 
> Has there been a change in the definition of "BogoMips"?

AFAIK bogomips is just an internal delay calibration variable and not
something used to test the speed of the cpu, rather just how long a
certain loop takes to execute.


Øyvind Jægtnes

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Re: Linux 2.4.[01] and BogoMips

[rui.sousa]

On Mon, 5 Feb 2001, Pat Verner wrote:

> I have Linux running on several older Pentium machines - Pentium -166 MHz
> and Pentium - 120 Mhz.
>
> Under kernel 2.2.13+ these machines report a BogoMips of 66 or 47
> respectively;  suddenly under kernel 2.4.[01] the speed is suddenly
> reported as 332 and 238 respectively.
>
> Has there been a change in the definition of "BogoMips"?

No. It is still as bogus as before.

Rui Sousa

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Re: Linux 2.4.[01] and BogoMips

[Pete Toscano]

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hmmm, *remembers back to lwe*.... maybe linus would be able to say if
there's been a change... i seem to recall he was surprised by this...
=;]

pete

On Mon, 05 Feb 2001, Pat Verner wrote:

> Has there been a change in the definition of "BogoMips"?

-- 
Pete Toscano         pete@research.netsol.com          703.948.3364
GPG fingerprint: D8F5 A087 9A4C 56BB 8F78  B29C 1FF0 1BA7 9008 2736

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