Re: large page patch (fwd) (fwd)

David Mosberger
2002-08-03T19:38:06Z

>>>>> On Sat, 3 Aug 2002 14:41:29 -0400, Hubertus Franke <frankeh@watson.ibm.com> said:

Hubertus> But I'd like to point out that superpages are there to
Hubertus> reduce the number of TLB misses by providing larger
Hubertus> coverage. Simply providing page coloring will not get you
Hubertus> there.

Yes, I agree.

It appears that Juan Navarro, the primary author behind the Rice
project, is working on breaking down the superpage benefits they
observed. That would tell us how much benefit is due to page-coloring
and how much is due to TLB effects. Here in our lab, we do have some
(weak) empirical evidence that some of the SPECint benchmarks benefit
primarily from page-coloring, but clearly there are others that are
TLB limited.

--daivd