Re: [patch 0/4] V2 ia64 SPARSEMEM

Bob Picco
2005-06-09T19:59:22Z

Jack Steiner wrote: [Thu Jun 09 2005, 03:47:13PM EDT]
> On Wed, May 25, 2005 at 05:44:06PM -0500, Jack Steiner wrote:
> > On Wed, May 25, 2005 at 11:13:47AM -0400, Bob Picco wrote:
> > ...
> > > and HPSIM. An early version of ia64 with SPARSEMEM was tested by Jesse. It
> > > would be optimal to have another test pass on SGI NUMA hardware.
> >
> >
> > I'm away from the office this week, but next week, I'll give the patch
> > another spin on a big SGI system.
> >
>
> Sorry to have taken so long but I had a number of problems getting the latest
> mm kernel to run reliably on our large systems.
>
> All of the page fault intensive tests that I ran on a 64p showed essentially
> the same performance with & w/o SPARSEMEM enabled.
>
> I also ran AIM7 but was unsucessful drawing any conclusions from the results.
> Something in the latest tree is causing large run-to-run variations - almost 2:1
> at some load points. I'm trying to determine the cause of these variations.
>
> I have not had a chance to pull down the latest SPARSEMEM patches. I'll
> do that once I understand the cause of the run-to-run variations.
Jack,

Great. thanks.

Please hold off on fetching latest SPARSEMEM. I'm about to post V3 of
ia64 SPARSEMEM. It depends on an Andy -mm patch acked by Andrew and two
-mm patches by me not acked by Andrew.

thanks,

bob
>
> --
> Thanks
>
> Jack Steiner (steiner@sgi.com) 651-683-5302
> Principal Engineer SGI - Silicon Graphics, Inc.
>
>