Hi Nitish.
Thanks for your participation.
On 4 Nov 2015, at 01:54, Nitish Ambastha nits.ambastha@gmail.com wrote:
It is a quad core in-order ARM Cortex A7MP, single cluster SMP, with cluster frequency scaling and per cpu power gating. I don't think this topology will benefit from the energy model of scheduler as much as a heterogeneous system or a multi-cluster system
That may be the case (subject to evaluation). However, given that the EAS work in question (energy model driven task placement and scheduler driven DVFS) is where the community wants to go, it is worthwhile aligning with this work so long as there is no significant power-perf regression versus the status quo.
Looking at it from that PoV, it’s not only about whether there is benefit for a given topology, it’s about whether EAS cuts it when stacked up against what you currently have on that topology. Ultimately the goal is to get EAS to be the replacement for the status quo for any topology.
Of course, if by empirical evaluation it emerges that EAS is tanking things on a single cluster SMP design, then we should try and fix that.
Robin
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