Hi, Low, On Thu, Feb 4, 2016 at 9:35 AM, Jason Low <jason.l...@hp.com> wrote: > I've done some testing with this patch with some of the AIM7 workloads > and found that this reduced throughput by about 10%. The reduction in > throughput is expected since spinning as a waiter is less efficient. > > Another observation I made is that the top waiter spinners would often > times require needing to reschedule before being able to acquire the > lock from spinning when there was high contention. A waiter can go into > the cycle of spin -> reschedule -> spin -> reschedule. So although the > chance of starvation is reduced, this patch doesn't fully address the > issue of waiter starvation.
Could you share your workload? I want to reproduce it in 0day/LKP+ environment. Best Regards, Huang, Ying
