Re: page table lock patch V15 [0/7]: overview

Marcelo Tosatti
2005-01-12T12:29:07Z

On Wed, Jan 12, 2005 at 01:42:35AM -0800, Andrew Morton wrote:
> Nick Piggin <nickpiggin@yahoo.com.au> wrote:
> >
> > Christoph Lameter wrote:
> > > Changes from V14->V15 of this patch:
> >
> > Hi,
> >
> > I wonder what everyone thinks about moving forward with these patches?
>
> I was waiting for them to settle down before paying more attention.
>
> My general take is that these patches address a single workload on
> exceedingly rare and expensive machines. If they adversely affect common
> and cheap machines via code complexity, memory footprint or via runtime
> impact then it would be pretty hard to justify their inclusion.
>
> Do we have measurements of the negative and/or positive impact on smaller
> machines?

I haven't seen wide performance numbers of this patch yet.

Hint: STP is really easy.