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

Andrea Arcangeli
2002-01-14T11:43:07Z

On Sun, Jan 13, 2002 at 07:32:18PM +0000, Alan Cox wrote:
> > Again, preempt seems to reign supreme. Where is all the information
> > correlating preempt is inferior? To be fair, however, we should bench a
> > mini-ll+s test.
>
> How about some actual latency numbers ?

with an huge rescheduling rate (huge swapout/swapin load) and the
scheduler walking over 100 tasks at each schedule it is insane to
deduct anything from those numbers (-preempt was using O(1)
scheduler!!!!). so please don't make any assumption by just looking at
those numbers.

Andrea