Messages in this thread | | | Date | Mon, 21 Apr 2003 15:55:52 -0700 | From | William Lee Irwin III <> | Subject | Re: 67-mjb2 vs 68-mjb1 (sdet degredation) |
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"Martin J. Bligh" <mbligh@aracnet.com> wrote: >> Just wondering if you can recognise / guess the problem from the profiles, >> else I'll poke at it some more (will probably just work out what's hitting >> .text.lock.filemap).
On Mon, Apr 21, 2003 at 02:46:31PM -0700, Andrew Morton wrote: > erk. Looks like the rwlock->spinlock conversion of mapping->page_lock. > That was a small (1%?) win on small SMP, and looks to be a small lose on > big SMP. No real surprise there. > Here's a backout patch. Does it fix it up?
I've yet to recover from merging against this and several others; hopefully mbligh can run the numbers you need.
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