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

Arjan van de Ven
2005-05-10T19:07:09Z

On Tue, May 10, 2005 at 11:58:18AM -0700, Andrew Morton wrote:
> "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*.

the balance between correctness and performance ;)

the patch to keep track of basically the below-gap-size will fix the
correctness side I suppose, however I'm not sure I'm thrilled by the
inherent complexity that is beeing added. More to track means more
complexity and fragility.