Re: [2.4.17/18pre] VM and swap - it's really unusable

[Daniel Phillips]

On January 21, 2002 04:43 pm, [e-mail] wrote:
> On Mon, Jan 21, 2002 at 04:38:59PM +0100, Daniel Phillips wrote:
> > On January 15, 2002 01:39 pm, [e-mail] wrote:
> > > My reservation about preemption as an implementation technique is that
> > > it has costs, which seem to be not easily boundable, but not very 
> > > clear benefits.
> > 
> > To me the benefit is clear enough: ASAP scheduling of IO threads, a 
> > simple heuristic that improves both throughput and latency.
> 
> I think of "benefit", perhaps naiively, in terms of something that can
> be measured or demonstrated rather than just announced.

But you see why asap scheduling improves latency/throughput *in theory*, 
don't you?  As for the measured benefit, there have been a steady stream of 
postive reports on lkml.  My own experience is that the usability of my 
laptop with its small memory is much improved under heavy IO load.

--
Daniel