On Mon, 14 Oct 1996, Mark Brinicombe wrote:
> 
> Having to clean the dcache on every context switch and also when making
> significant changes to pte's etc does hit performance. Although user binaries
> run faster there is a big penelty for lots of I/O etc.
> 

How much of a problem is having to clean the cache on every context switch?

How much of the total time goes simply into cleaning the cache?

 Presumably if it has to do it both on context switches and on recieving 
interrupts it's quite a lot!

Ale.