Netbench results on a linux 4-way system

David Collier-Brown davecb at
Thu Aug 1 11:46:02 GMT 2002

Andrew Theurer wrote:
> One other thing, P4 by default sends all ints to CPU0.  This _was_ a
> problem for 4 physical/8 logical processors.  A single physical
> processor is enough to handle all the ints from these network cards at
> the throughput we are seeing.  However, when you split the physical CPUS
> into 2 logical CPUS, (hyperthreading) "1/2" of a CPU is not enough to
> support processing all the ints.  I used a new irq balancing feature to
> spread the ints to multiple processors to avoid this.


	Thanks, all the best in getting Linux to fly.

David Collier-Brown,           | Always do right. This will gratify 
Performance & Engineering      | some people and astonish the rest.
Americas Customer Engineering, |                      -- Mark Twain
(905) 415-2849                 | davecb at

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