Messages in this thread | | | Subject | Re: [PATCHv2 11/11] writeback: prevent unnecessary bdi threads wakeups | From | Artem Bityutskiy <> | Date | Fri, 23 Jul 2010 18:03:02 +0300 |
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On Thu, 2010-07-22 at 18:05 +1000, Nick Piggin wrote: > This is producing 2 unrequired context switches, so I really would > like to see it done properly. Setting up a timer is really pretty > simple (or if you would care to implement a delayed process wakeup > API, I think that would be useful -- I'm surprised there isn't one > already).
It reduces flusher thread wake-up count a lot, BTW. I've just sent v4 of the patch set which implements this, see patch 12.
Nick, could you please take a look at patch 10 in that v4 series. I've added memory barriers, they are always tricky, and last time I remember you helped me to use barriers properly.
Thanks!
-- Best Regards, Artem Bityutskiy (Артём Битюцкий)
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