Messages in this thread | | | Date | Wed, 23 Mar 2005 11:19:38 +1100 | From | Nick Piggin <> | Subject | Re: [PATCH 1/5] freepgt: free_pgtables use vma list |
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David S. Miller wrote: > On Wed, 23 Mar 2005 10:32:10 +1100 > Nick Piggin <nickpiggin@yahoo.com.au> wrote: > > >>I think David's on the right track - I think there's something a >>bit wrong at the top. In my reply to Andrew in this thread I >>posted a patch which may at least get things working... > > > We have to do the "if (ceiling)" check in every spot where > we mask it in some way, and if it falls to zero from non-zero > due to the masking, we skip. > > That gives me a mostly working kernel. >
I see. Tricky.
> Bad news is that while lat_proc's fork and exec tests improve > dramatically, shell performance is way down on sparc64. > I'll post before and after numbers in a bit. Note, this is > just with Hugh's base patch plus bug fixes. >
That's interesting. The only "extra" stuff Hugh's should be doing is the vma traversal.
The single walk patch seems to fit in quite well with Hugh's updated patchset. I haven't quite worked out how to best do hugepages, but it is easily possible. But I won't dust that off again until Hugh's is nicely tested and working.
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