On Do, 08.04.21 17:19, Hadrien Grasland (hadrien.grasl...@ijclab.in2p3.fr) wrote:
> Le 08/04/2021 à 16:11, Lennart Poettering a écrit : > > On Do, 08.04.21 12:24, Hadrien Grasland (hadrien.grasl...@ijclab.in2p3.fr) > > wrote: > > > > > Hi everyone, > > > > > > In a scenario where running benchmarks on dedicated hardware is not > > > possible, I'm trying to momentarily cap the I/O bandwidth used by > > > interactive user sessions while benchmarks are running, in order to > > > improve > > > the stability of said benchmark's I/O performance. > > Is this on cgroupsv1 or cgroupsv2? > > > > IIRC there was some issue that the block io controller wasn't fully > > recursive on cgroupsv1. It should work on cgroupsv2. > > This is on a hybrid cgroup configuration. I (perhaps mistakenly) assumed > that modern systemd (v246) will use the cgroups v2 hierarchy in that case, > even though cgroups v1 is still exposed for compatibility with older apps. No, hybrid mode means all controllers operate in cgroupsv1 mode. It's just that the controller-less cgroupsv2 hierarchy is also mounted. hybrid mode was a mistake, we should never have added that, it's just a massive maintainance burden for little gain. Lennart -- Lennart Poettering, Berlin _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/systemd-devel
