Hi Lennart, Andrey, Some questions about the discuss: 1. Does systemd re-enable sorting user sessions into their own cgroups in the 'cpu' hierarchy? 2. AIUI, rtkit is a daemon used for doing RT-related privilege operations. It doesn't spawn RT-threads. Am I right? 3. Does rtkit have related systemd service file? Does it run at its own cgroup with controller=cpu? If yes, how does the cgroup receive rt-bandwidth(period time, run time)?
2011/2/10 Andrey Borzenkov <arvidj...@mail.ru> > On Tue, Feb 8, 2011 at 3:11 PM, Lennart Poettering > <lenn...@poettering.net> wrote: > > Weird, weird, weird. So, systemd is in the right cgroup with correct > > settings but still doesn't have the privs to make itself RT. There's > > something very weird here. > > > > Kernel bug. > > commit f44937718ce3b8360f72f6c68c9481712517a867 > Author: Mike Galbraith <efa...@gmx.de> > Date: Thu Jan 13 04:54:50 2011 +0100 > > sched, autogroup: Fix CONFIG_RT_GROUP_SCHED sched_setscheduler() failure > > If CONFIG_RT_GROUP_SCHED is set, __sched_setscheduler() fails due > to autogroup > not allocating rt_runtime. Free unused/unusable rt_se and rt_rq, > redirect RT > tasks to the root task group, and tell __sched_setscheduler() that it's > ok. > _______________________________________________ > systemd-devel mailing list > systemd-devel@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/systemd-devel > -- Regards, - cee1
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