Re: [patch 0/4] V2 ia64 SPARSEMEM

Jack Steiner
2005-06-09T19:47:13Z

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.

--
Thanks

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