Re: [Xen-devel] Scheduling of I/O domains

[Rob Gardner <rob.gardner@xxxxxx>]

On Fri, 2004-08-06 at 03:25, G. Milos wrote:
> The patch you sent probably does work, but most of the code responsible 
> for waking up got pushed into specific schedulers (i.e. it is not in 
> schedule.c but in sched_bvt.c, sched_rrobin.c etc). I have replaced the 
> "min <= now" bit by what BVT research paper suggests and only 
> 0.7% difference was observed in the dd test. It would be nice if you could 
> run the dd test on your machine after updating your xen code.

I ran my dd test with the latest xen bits, checked out today. The result
is:
dd test all by itself: best run 1.93s
dd test with another domain running an infinite loop: best run 2.5s

Well this is certainly much better than the 8s it was taking before, but
it's still giving up more than 25% in performance.

Rob Gardner
HP




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