On 03/17/2016 02:40 AM, Juri Lelli wrote: >> Could the default schedtune value not serve as the out of the box margin? >> > I'm not sure I understand you here. For me schedtune should be disabled > by default, so I'd say that it doesn't introduce any additional margin > by default. But we still need a margin to make the governor work without > schedtune in the mix.
Why not have schedtune be enabled always, and use it to add the margin? It seems like it'd simplify things. I haven't looked at the schedtune code at all so I don't know whether this makes sense given its current implementation. But conceptually I don't know why we'd need or want one margin in schedutil which will be tunable, and then another mechanism for tuning as well.
