On Mon, Jan 13, 2014 at 06:23:50PM +0200, Marian Marinov wrote: > Hello Peter, > > I need help with the scheduler. > > I'm currently trying to patch the /proc/loadavg to show the load that is > only related to the processes from the current cgroup. > > I looked trough the code and I was hoping that tsk->sched_task_group->cfs_rq > struct will give me the needed information, but unfortunately for me, it did > not. > > Can you advise me, how to approach this problem? Yeah, don't :-) Really, loadavg is a stupid metric. > I'm totally new to the scheduler code. Luckily you won't actually have to touch much of it. Most of the actual loadavg code lives in the first ~400 lines of kernel/sched/proc.c, read and weep. Its one of the best documented bits around. Your proposition however is extremely expensive, you turn something that's already expensive O(nr_cpus) into something O(nr_cpus * nr_cgroups). I'm fairly sure people will not like that, esp. for something of such questionable use as the loadavg -- its really only a pretty number that doesn't mean all that much. > -------- Original Message -------- > From: Li Zefan <lizefan@xxxxxxxxxx> > > Then you should add Peter, Ingo and LKML to your Cc list. :) You failed that, let me fix that. -- To unsubscribe from this list: send the line "unsubscribe cgroups" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
