On Fri, Sep 29, 2017 at 01:35:00PM +0200, Peter Zijlstra wrote: > On Thu, Sep 28, 2017 at 11:03:03AM +0100, Morten Rasmussen wrote: > > IIUC, if grq->avg.load_avg > grq->load.weight, i.e. you have blocked > > tasks, you can end up with underestimating the ge->load.weight for some > > of the group entities lead to \Sum ge->load.weight < tg->weight. > > Ah yes, you're right. However, if you look at the end of the series we > actually end up with using: > > max(grq->load.weight, grq->avg.load_avg) > > Which I suppose makes it true again.
Yes, with the next patch in the series, underestimation is no longer possible.
