Re: Hyperthreading

[Jeff V. Merkey]

On Wed, Apr 17, 2002 at 02:10:52PM -0700, Martin J. Bligh wrote:
> > That has balanced the timer irqs.  I've also enabled hyper threading
> > (append="acpismp=force").
> > ...
> > And, you've gotta like this line:
> > Total of 4 processors activated (14299.95 BogoMIPS).
> 
> Before you get too excited about that, how much performance boost do 
> you actually get by turning on Hyperthreading? ;-)
> 

In my testing with SCI, it speeds up some operations and with 3Ware 
it increases throuput about 10 MB/S.  Not a lot but there is some 
improvement (if you can get around the lockups during boot).

Jeff

> M.
> 
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