Messages in this thread | | | Subject | Re: [PATCH] eventpoll : Suppress a short lived lock from struct file | From | Peter Zijlstra <> | Date | Mon, 11 Jul 2005 10:34:27 +0200 |
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On Mon, 2005-07-11 at 09:18 +0200, Eric Dumazet wrote: > Hi Davide > > I found in my tests that there is no need to have a f_ep_lock spinlock > attached to each struct file, using 8 bytes on 64bits platforms. The > lock is hold for a very short time period and can be global, with almost > no change in performance for applications using epoll, and a gain for > all others. >
Have you tested the impact of this change on big SMP/NUMA machines? I hate to see an Altrix crashing to its knees :-)
-- Peter Zijlstra <a.p.zijlstra@chello.nl>
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