Re: [PATCH] sched/fair: Do not decay new task load on first enqueue

From: Matt Fleming
Date: Tue Oct 11 2016 - 06:40:17 EST


On Tue, 11 Oct, at 10:44:25AM, Dietmar Eggemann wrote:
>
> [...]
>
> Yeah, you're right. But I can't see any significant difference. IMHO,
> it's all in the noise.
>
> (A) Performance counter stats for 'perf bench sched messaging -g 100 -l
> 1 -t'
> # 20 sender and receiver threads per group
> # 100 groups == 4000 threads run
>

FWIW, our tests run with 1000 loops, not 1, and we don't use 100
groups for low cpu machines. We tend to test upto $((nproc * 4)).