On Fri, Feb 09, 2018 at 05:59:12PM +0000, Jon Maloy wrote:
> The two commits
> d153b153446f7 (" sched/core: Fix wake_affine() performance regression") and
> f2cdd9cc6c97 ("sched/core: Address more wake_affine() regressions")
> are causing a serious performance degradation in Linux 4.5.
>
> The effect is worst on TIPC, but even TCP is affected, as the figures below
> show.
I did run a whole bunch of netperf and didn't see anything like that.
0-day also didn't report anything, and it too runs netperf.
I'll try and see if I can reproduce somewhere next week.
