On Fri, Jan 29, 2016 at 8:08 AM, pavi1729 <[email protected]> wrote:
> Hi, > I have an issue with libpam-systemd which is interfering with > scheduler settings on my machine. Details as below > > -------------------------------------------------------------------------- > File: linux/kernel/sched/core.c > > WITHOUT libpam-systemd > > [ 36.278241] rt_bandwidth_enabled(): 1 > [ 36.281977] rt_policy(policy) : 1 > [ 36.285367] task_group_is_autogroup(task_group(p)) : 0 > [ 36.289883] task_group(p)->rt_bandwidth.rt_runtime : 950000000 > > > WITH libpam-systemd INSTALLED > > [ 2096.713855] rt_bandwidth_enabled(): 1 > [ 2096.717871] rt_policy(policy) : 1 > [ 2096.721408] task_group_is_autogroup(task_group(p)) : 0 > [ 2096.726180] task_group(p)->rt_bandwidth.rt_runtime: 0 <-- (gets set to > 0) > > > QUESTION: Why is libpam-systemd setting > task_group(p)->rt_bandwidth.rt_runtime to 0 ? > Probably due to moving the process to a separate (per-user) cgroup; check /proc/self/cgroup. There are known kernel problems with RT scheduling; see also: https://github.com/systemd/systemd/blob/master/README#L99-L106 > SYSTEM DETAILS > > root at pavi:/home/pavi# uname -a > Linux pavi 3.18.21-pavi-g4c8a53e-dirty #43 SMP PREEMPT Fri Dec 18 > 14:56:40 IST 2015 aarch64 aarch64 aarch64 GNU/Linux > > > root at pavi:/home/pavi# cat /etc/os-release > NAME="Ubuntu" > VERSION="15.04 (Vivid Vervet)" > ID=ubuntu > ID_LIKE=debian > PRETTY_NAME="Ubuntu 15.04" > VERSION_ID="15.04" > HOME_URL="http://www.ubuntu.com/"; > SUPPORT_URL="http://help.ubuntu.com/"; > BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"; > But which systemd version? -- Mantas Mikulėnas <[email protected]>
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