Robert Love wrote:
> On Fri, 2002-10-04 at 17:25, Manfred Spraul wrote:
> 
> 
>>Which cpus have slow local_irq_disable() implementations? At least
>>for  my Duron, this doesn't seem to be the case [~ 4 cpu cycles
>>for cli]
> 
> 
> I believe there are pipeline effects to disabling interrupts, e.g. it
> has to be flushed?
> 
At least my Duron [700 MHz] obviously doesn't flush the pipeline. If the 
Pentium 4 flushes his pipeline, it could mean 20+ cycles - test app is 
attached.

--
	Manfred