Messages in this thread | | | Date | Wed, 28 Jul 2021 13:47:20 -0700 | From | "Paul E. McKenney" <> | Subject | Re: [PATCH v2 rcu 04/18] rcu: Weaken ->dynticks accesses and updates |
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On Wed, Jul 28, 2021 at 01:37:19PM -0700, Josh Triplett wrote: > On Wed, Jul 28, 2021 at 10:37:15AM -0700, Paul E. McKenney wrote: > > This change makes the memory ordering requirements > > more evident, and it might well also speed up the to-idle and from-idle > > fastpaths on some architectures. > > Cleaning up the memory ordering requirements certainly seems worthwhile. > But is there any straightforward benchmark that might quantify the > "might well also speed up" here? How much does weakening the memory > ordering buy us, in practice?
None that I know of!
Thanx, Paul
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