On Friday 04 May 2007 18:52, Ingo Molnar wrote:
quoted text
> agreed. Con, IIRC you wrote a testcase for this, right? Could you please
> send us the results of that testing?

Yes, sorry it's a crappy test app but works on 32bit. Timed with prefetch 
disabled and then enabled swap prefetch saves ~5 seconds on average hardware 
on this one test case. I had many users try this and the results were between 
2 and 10 seconds, but always showed a saving on this testcase. This effect 
easily occurs on printing a big picture, editing a large file, compressing an 
iso image or whatever in real world workloads. Smaller, but much more 
frequent effects of this over the course of a day obviously also occur and do 
add up.

-- 
-ck