On Sat, Jan 30, 2016 at 9:18 AM, Ding Tianhong <[email protected]> wrote: > On 2016/1/29 17:53, Peter Zijlstra wrote: >> On Sun, Jan 24, 2016 at 04:03:50PM +0800, Ding Tianhong wrote: >> >>> looks good to me, I will try this solution and report the result, thanks >>> everyone. >> >> Did you get a change to run with this? >> >> . >> > > I backport this patch to 3.10 lts kernel, and didn't change any logic, Till > now, the patch works fine to me, and no need to change anything, > So I think this patch is no problem, could you formal release this patch to > the latest kernel? :) > > Thanks. > Ding > >
The original patch from Tianhong triggered a performance regression because the optimistic spinning is turned off in effect. I tested Peter's patch with same configuration and there show no regression. So I think the patch keep the optimistic spinning. Test result details will be in the next email. Best Regards, Huang, YIng
