Re: [linux-audio-user] CPU clock - beware

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To: A list for linux audio users <linux-audio-user@...>
Date: Monday, July 26, 2004 - 3:05 am

On Sun, Jul 25, 2004 at 03:13:37AM +0100, tim hall wrote:

a=20

Yeah, definitely overclocked. There are no Celerons with 128KB cache
that run with a 100Mhz bus, AFAIK.

> > "cpu MHz" the real current speed

ly
ed.=20

Depends on the chip. It is used to calculate the amount of time spent
in a particular kernel delay loop. Some chips run this code faster or
slower than others. It's not a benchmark as much as a calibration
value.

> This is what I guessed, I'm using the values specified in the manual for =
a=20

Oops. They could be referring to a PIII Coppermine, you know...

> at 3x clock ratio I get:

1:1 CPU<->AGP ratio? That's not going to work well at 100MHZ FSB.

> I think I might read it now. I'm a bit confused as to why my system think=
s=20

t=20

897MHz is just the FSB * 9. It doesn't run exactly at 100MHz because it
would be impossible to do so while maintaining synchronicity with a
33MHz PCI bus. 33MHz is actually 33.something, so you end up with
99.something when the FSB is running at 3x the PCI frequency.

--=20
Ryan Underwood,

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Messages in current thread:
Re: [linux-audio-user] CPU clock - beware, Matthew Barber, (Fri Jul 23, 4:23 am)
Re: [linux-audio-user] CPU clock - beware, Rick B, (Fri Jul 23, 7:23 am)
Re: [linux-audio-user] CPU clock - beware, tim hall, (Fri Jul 23, 4:23 pm)
Re: [linux-audio-user] CPU clock - beware, Rick B, (Fri Jul 23, 9:45 pm)
Re: [linux-audio-user] CPU clock - beware, tim hall, (Sat Jul 24, 12:57 am)
Re: [linux-audio-user] CPU clock - beware, tim hall, (Sat Jul 24, 2:42 am)
Re: [linux-audio-user] CPU clock - beware, Stefan Scheffler, (Sat Jul 24, 10:41 am)
Re: [linux-audio-user] CPU clock - beware, tim hall, (Sat Jul 24, 12:36 pm)
Re: [linux-audio-user] CPU clock - beware, Ryan Underwood, (Sat Jul 24, 5:04 pm)
Re: [linux-audio-user] CPU clock - beware, Stefan Scheffler, (Sat Jul 24, 2:26 pm)
Re: [linux-audio-user] CPU clock - beware, tim hall, (Sun Jul 25, 2:28 am)
Re: [linux-audio-user] CPU clock - beware, Ryan Underwood, (Mon Jul 26, 3:05 am)
[linux-audio-user] CPU clock - Coppermining, tim hall, (Mon Jul 26, 3:30 pm)
Re: [linux-audio-user] CPU clock - Coppermining, Ryan Underwood, (Mon Jul 26, 10:15 pm)
Re: [linux-audio-user] CPU clock - beware, Rick B, (Sun Jul 25, 3:06 am)
[linux-audio-user] CPU clock - Coppermining, tim hall, (Sun Jul 25, 12:49 pm)
Re: [linux-audio-user] CPU clock - Coppermining, Ryan Underwood, (Mon Jul 26, 2:59 am)
Re: [linux-audio-user] CPU clock - Coppermining, Rick B, (Sun Jul 25, 11:22 pm)
Re: [linux-audio-user] CPU clock - Coppermining, tim hall, (Mon Jul 26, 3:38 pm)
Re: [linux-audio-user] CPU clock - beware, robin fell, (Sat Jul 24, 12:50 pm)
Re: [linux-audio-user] CPU clock - beware, tim hall, (Sun Jul 25, 1:41 am)
Re: [linux-audio-user] CPU clock - beware, Chris Pickett, (Sun Jul 25, 1:52 am)
Re: [linux-audio-user] CPU clock - beware, Russell Hanaghan, (Sat Jul 24, 4:32 am)
Re: [linux-audio-user] CPU clock - beware, tim hall, (Sat Jul 24, 12:41 pm)