Messages in this thread | | | Subject | Re: [RFC PATCH] sched: smart wake-affine | From | Mike Galbraith <> | Date | Mon, 03 Jun 2013 05:09:01 +0200 |
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On Mon, 2013-06-03 at 10:28 +0800, Michael Wang wrote: > On 05/28/2013 01:05 PM, Michael Wang wrote: > > wake-affine stuff is always trying to pull wakee close to waker, by theory, > > this will bring benefit if waker's cpu cached hot data for wakee, or the > > extreme ping-pong case. > > > > And testing show it could benefit hackbench 15% at most. > > > > However, the whole stuff is somewhat blindly and time-consuming, some > > workload therefore suffer. > > > > And testing show it could damage pgbench 50% at most. > > > > Thus, wake-affine stuff should be smarter, and realise when to stop > > it's thankless effort. > > Is there any comments?
(I haven't had time to test-drive yet, -rt munches time like popcorn)
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