On Tue, Jan 03, 2017 at 05:07:54PM -0500, Waiman Long wrote: > On 01/03/2017 11:18 AM, Peter Zijlstra wrote: > > On Sun, Dec 25, 2016 at 03:26:01PM -0500, Waiman Long wrote: > >> A number of cmpxchg calls in qspinlock_paravirt.h were replaced by more > >> relaxed versions to improve performance on architectures that use LL/SC. > > Claim without numbers ;-) > > Well it is hard to produce actual numbers here as I don't have the setup > to gather data.
Surely RHT has big PPC machines around? I know that getting to them is a wee bit of a bother, but they should be available somewhere.
