Re: [PATCH 3/4] sched: Optimize tick periodic cpu load updates

2016-04-02 Thread Frederic Weisbecker
On Sat, Apr 02, 2016 at 09:23:37AM +0200, Peter Zijlstra wrote: > On Fri, Apr 01, 2016 at 03:23:06PM +0200, Frederic Weisbecker wrote: > > Don't bother with the whole pending tickless cpu load machinery if > > we run a tick periodic kernel. That's less job for the CPU on ticks. > > Again, the chan

Re: [PATCH 3/4] sched: Optimize tick periodic cpu load updates

2016-04-02 Thread Peter Zijlstra
On Fri, Apr 01, 2016 at 03:23:06PM +0200, Frederic Weisbecker wrote: > Don't bother with the whole pending tickless cpu load machinery if > we run a tick periodic kernel. That's less job for the CPU on ticks. Again, the changelog really could use help. Is this a pure optimization patch? If so, do

[PATCH 3/4] sched: Optimize tick periodic cpu load updates

2016-04-01 Thread Frederic Weisbecker
Don't bother with the whole pending tickless cpu load machinery if we run a tick periodic kernel. That's less job for the CPU on ticks. Cc: Byungchul Park Cc: Chris Metcalf Cc: Christoph Lameter Cc: Ingo Molnar Cc: Luiz Capitulino Cc: Mike Galbraith Cc: Paul E. McKenney Cc: Peter Zijlstra