Re: [REPORT] cfs-v4 vs sd-0.44

Ingo Molnar
2007-04-25T09:45:11Z

* Li, Tong N <tong.n.li@intel.com> wrote:

> [...] A corollary of this is that if both threads i and j are
> continuously runnable with fixed weights in the time interval, then
> the ratio of their CPU time should be equal to the ratio of their
> weights. This definition is pretty restrictive since it requires the
> properties to hold for any thread in any interval, which is not
> feasible. [...]

yes, it's a pretty strong definition, but also note that while it is
definitely not easy to implement, the solution is nevertheless feasible
in my opinion and there exists a scheduler that implements it: CFS.

Ingo