Re: [RFC][PATCH 0/9] sched: Power scheduler design proposal

From: Arjan van de Ven
Date: Wed Jul 24 2013 - 11:16:46 EST

Given that the power topology is taken into account, a sort
left/right-like mechanism would only help performance insensitive tasks
on big.LITTLE. Performance sensitive tasks that each can use more than
a little cpu should move in the opposite direction. Well, directly to a
big cpu, even if some little cpus are idle.

It can be discussed whether smaller performance sensitive tasks that
would fit on a little cpu should be put on a little or big cpu. That
would depend on the nature of the task and if other tasks depend on it.

yeah that makes it fun

just a question for my education; is there overlap between big and little?
meaning, is the "highest speed of little" as fast, or faster than "lowest speed of big"
or are those strictly disjoint?

(if there's overlap that gives some room for the scheduler to experiment)

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at