Re: [PATCH v4 1/4] sched/fair: Introduce primitives for CFS bandwidth burst

Peter Zijlstra
2021-03-16T09:43:14Z

On Tue, Mar 16, 2021 at 12:49:28PM +0800, Huaixin Chang wrote:
> In this patch, we introduce the notion of CFS bandwidth burst. Unused
> "quota" from pervious "periods" might be accumulated and used in the
> following "periods". The maximum amount of accumulated bandwidth is
> bounded by "burst". And the maximun amount of CPU a group can consume in
> a given period is "buffer" which is equivalent to "quota" + "burst in
> case that this group has done enough accumulation.

Complete lack of why though. Why am I going to spend time looking at
this?