Re: [patch 00/18] CFS Bandwidth Control v7.2

Peter Zijlstra
2011-09-19T08:33:58Z

On Mon, 2011-09-19 at 12:22 +0400, Vladimir Davydov wrote:
> But communicating tasks do not necessarily wake each other even if
> they exchange data through the pipe. And of course, if they use shared
> memory (e.g. threads), it is not obligatory at all. Also, the
> wake-affine path is cpu-load aware, i.e. it tries not to overload a
> cpu it is going to wake a task on. For instance, if we run a context
> switch test on an idle host, the two tasks will be executing on
> different cpus although it is better to execute them together on the
> same cpu.

This is not a problem specific to cgroups, and thus the solution
shouldn't ever live as something related to cgroups.