On Fri, May 10, 2019 at 11:08 AM Koenig, Christian <Christian.Koenig@xxxxxxx> wrote: > Am 10.05.19 um 16:57 schrieb Kenny Ho: > > On Fri, May 10, 2019 at 8:28 AM Christian König > > <ckoenig.leichtzumerken@xxxxxxxxx> wrote: > >> Am 09.05.19 um 23:04 schrieb Kenny Ho: > So the drm cgroup container is separate to other cgroup containers? In cgroup-v1, which is most widely deployed currently, all controllers have their own hierarchy (see /sys/fs/cgroup/). In cgroup-v2, the hierarchy is unified by individual controllers can be disabled (I believe, I am not super familiar with v2.) > In other words as long as userspace doesn't change, this wouldn't have > any effect? As far as things like docker and podman is concern, yes. I am not sure about the behaviour of others like lxc, lxd, etc. because I haven't used those myself. > Well that is unexpected cause then a processes would be in different > groups for different controllers, but if that's really the case that > would certainly work. I believe this is a possibility for v1 and is why folks came up with the unified hierarchy in v2 to solve some of the issues. https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html#issues-with-v1-and-rationales-for-v2 Regards, Kenny > > On the other hand, if there are expectations for resource management > > between containers, I would like to know who is the expected manager > > and how does it fit into the concept of container (which enforce some > > level of isolation.) One possible manager may be the display server. > > But as long as the display server is in a parent cgroup of the apps' > > cgroup, the apps can still import handles from the display server > > under the current implementation. My understanding is that this is > > most likely the case, with the display server simply sitting at the > > default/root cgroup. But I certainly want to hear more about other > > use cases (for example, is running multiple display servers on a > > single host a realistic possibility? Are there people running > > multiple display servers inside peer containers? If so, how do they > > coordinate resources?) > > We definitely have situations with multiple display servers running > (just think of VR). > > I just can't say if they currently use cgroups in any way. > > Thanks, > Christian. > > > > > I should probably summarize some of these into the commit message. > > > > Regards, > > Kenny > > > > > > > >> Christian. > >> > _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx
