Re: Fw: [Bug 4520] New: /proc/*/maps fragments too quickly compared to

Andrew Morton
2005-05-10T19:43:57Z

"Chen, Kenneth W" <kenneth.w.chen@intel.com> wrote:
>
> Andrew Morton wrote Tuesday, May 10, 2005 11:58 AM
> > "Chen, Kenneth W" <kenneth.w.chen@intel.com> wrote:
> > > Andrew Morton wrote on Monday, May 09, 2005 2:27 PM
> > > > Possibly for the 2.6.12 release the safest approach would be to just
> > > > disable the free area cache while we think about it.
> > >
> > > I hope people are not thinking permanently kill the free area cache
> > > algorithm. It is known to give a large percentage of performance gain
> > > on specweb SSL benchmark. I think it gives 4-5% gain from free area
> > > cache algorithm.
> >
> > It also makes previously-working workloads completely *fail*.
>
> I agree that functionality over rule most of everything else. Though, I
> do want to bring to your attention on how much performance regression we
> will see if the free area cache is completely disabled. I rather make
> noise now instead of a couple month down the road :-)

Well we allegedly have a patch from Wolfgang which fixes things up, but our
talk-to-testing ratio seems to be infinite.

This is pretty serious, guys. Could someone please find the time to work
on it?