Re: 4 cheetah-3's pretty much saturate 80MB/sec channel

[Jan Edler]

On Thu, Aug 19, 1999 at 10:39:01PM +0100, Paul Jakma wrote:
> On Thu, 19 Aug 1999, Jan Edler wrote:
> 
>   It isn't reporting 99% of 4 Xeons, but 99% of one Xeon.
>   Bonnie just takes cpu/elapsed*100.
> 
> it also depends on the load. if bonnie is the only real load on the
> machine then cpu util will be 99%. 

Not in my experience.  I see cpu load (calculated by bonnie)
generally around N% when I see read througput of N MB/s.
I'm sure the near equality is a coincidence, but the fact
that the cpu load scales with the througput is significant.
It says the cpu does work proportional to the amount of data being read,
which is what it should be.

Jan Edler
NEC Research Institute