lkml.org 
[lkml]   [2021]   [Jul]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v2 rcu 04/18] rcu: Weaken ->dynticks accesses and updates
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?

\
 
 \ /
  Last update: 2021-07-28 22:38    [W:0.153 / U:0.060 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site