[systemd-devel] Antw: [EXT] Re: [systemd‑devel] cgroupsv2 and realtime processes

2022-06-06 Thread Ulrich Windl
>>> Michal Koutný schrieb am 06.06.2022 um 18:29 in Nachricht <20220606162925.gh6...@blackbody.suse.cz>: > On Mon, Jun 06, 2022 at 05:59:32PM +0200, Michał Zegan > wrote: >> I assume if it would be on it would break any and all realtime >> usage...? > > Most likely (you'd not be able either: tu

Re: [systemd-devel] cgroupsv2 and realtime processes

2022-06-06 Thread Michał Zegan
W dniu 6.06.2022 o 18:29, Michal Koutný pisze: On Mon, Jun 06, 2022 at 05:59:32PM +0200, Michał Zegan wrote: I assume if it would be on it would break any and all realtime usage...? Most likely (you'd not be able either: turn on RT policy, migrate the process or enable CPU controller, i.e. a

Re: [systemd-devel] cgroupsv2 and realtime processes

2022-06-06 Thread Michal Koutný
On Mon, Jun 06, 2022 at 05:59:32PM +0200, Michał Zegan wrote: > I assume if it would be on it would break any and all realtime > usage...? Most likely (you'd not be able either: turn on RT policy, migrate the process or enable CPU controller, i.e. a step that'd lead to an invalid state). I'm cu

Re: [systemd-devel] cgroupsv2 and realtime processes

2022-06-06 Thread Michał Zegan
W dniu 6.06.2022 o 17:14, Michal Koutný pisze: On Mon, Jun 06, 2022 at 04:54:03PM +0200, Michał Zegan wrote: this note pointed to in the readme is quite cgroups v1 specific, I believe what it describes was true in v1, and v2 does not have any capability to control realtime processes in non ro

Re: [systemd-devel] cgroupsv2 and realtime processes

2022-06-06 Thread Michal Koutný
On Mon, Jun 06, 2022 at 04:54:03PM +0200, Michał Zegan wrote: > this note pointed to in the readme is quite cgroups v1 specific, I believe > what it describes was true in v1, and v2 does not have any capability to > control realtime processes in non root cgroups if I read correctly. Yes. And it

Re: [systemd-devel] cgroupsv2 and realtime processes

2022-06-06 Thread Michał Zegan
W dniu 6.06.2022 o 16:02, Michal Koutný pisze: Hello Michał. On Sun, Jun 05, 2022 at 03:28:23PM +0200, Michał Zegan wrote: I have kernel 5.17 on archlinux. How is your kernel configured wrt CONFIG_RT_GROUP_SCHED? it is unset Is that still true? That depends :-) Yet, checking /proc/(p

Re: [systemd-devel] cgroupsv2 and realtime processes

2022-06-06 Thread Michal Koutný
Hello Michał. On Sun, Jun 05, 2022 at 03:28:23PM +0200, Michał Zegan wrote: > I have kernel 5.17 on archlinux. How is your kernel configured wrt CONFIG_RT_GROUP_SCHED? > Is that still true? That depends :-) > Yet, checking /proc/(pid)/cgroup states these processes are not in a root > cgroup,