On 10 October 2014 09:17, Vincent Guittot [off-list ref] wrote:

yes i think it latter because it give a more stable view of the

s/latter/matter/

"overload state" and "have  free capacity state" of the CPU.
One additional point is that the imbalance_pct will ensure that a
cpu/group will not been seen as having capacity if its available
capacity is only 1-5% which will generate spurious task migration

I will add these details in the commit log and in a comment in the code