Re: tasks not being scheduled; cfs_rq for /mesos is missing

hi Jojy, Unfortunately, I haven't been able to reproduce this issue on demand, it has just happened spontaneously a few times. So I cannot say for sure if it would happen on a newer mesos/kernel version. I'm thinking of trying to force reproduction by creating and destroying a ton of cgroups,

Re: tasks not being scheduled; cfs_rq for /mesos is missing

Hi Eric, Thanks again for the information. The value of 0 for */cgroup/cpu/cpu.cfs_* files looks suspicious. Since you are motivated to look into kernel, here is what I think is interesting. - The shed_debug print

Re: tasks not being scheduled; cfs_rq for /mesos is missing

Hi Erik Happy to work on this with you. Thanks for the details. As you might know, in cfs_rq:/ (from /proc/sched_debug), is the CPU cgroup hierarchy name. I am curious about the contents and cgroups hierarchy when this happens. Could you send the “mesos” hierarchy (directory tree) and

Re: tasks not being scheduled; cfs_rq for /mesos is missing

hey Jojy, Thanks for your reply. Response inline. On Thu, Dec 31, 2015 at 11:31 AM, Jojy Varghese wrote: > > Are /foo/bar cgroups hierarchical such that /foo missing would prevent > > /foo/bar tasks from being scheduled? i.e., might that be the root > cause of > > why

Re: tasks not being scheduled; cfs_rq for /mesos is missing

> Are /foo/bar cgroups hierarchical such that /foo missing would prevent > /foo/bar tasks from being scheduled? i.e., might that be the root cause of > why the kernel is ignoring these tasks? Was curious why you said the above. CPU scheduling shares are a function of their parent’s CPU