Messages in this thread | | | Date | Tue, 27 May 2003 17:08:38 -0300 (BRT) | From | Marcelo Tosatti <> | Subject | Re: 2.4.20: Proccess stuck in __lock_page ... |
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On Tue, 27 May 2003, Andrea Arcangeli wrote:
> > It seems your "fix-pausing" patch is fixing a potential wakeup > > miss, right? (I looked quickly throught it). Could you explain me the > > yes, not just one but multiple of them, all similar. lots of boxes were > hanging in a weird manner until I found and fixed this glitch. > > > problem its trying to fix and how? > > I'm attaching the old email, it should have all the explanataions. > > but don't use that old patch (that was the first revision and it missed > one last race in wait_for_request noticed by Chris or Andrew [or > both?]), use this one instead (seems just the second revision, should be > that one plus that last race fix): > > http://www.us.kernel.org/pub/linux/kernel/people/andrea/kernels/v2.4/2.4.21rc2aa1/9980_fix-pausing-2
I wonder if the additional wakeups result in performance degradation (not that it matters much in case there is no other way to fix the problem).
But anyway I would like to have some numbers with/without the patch.
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