> On 12/05/2020 14:13, Petr Pisar wrote:
> ...
>
> On Tue, May 12, 2020 at 12:47:51PM +0000, virgo wrote:
> >> I recommend you to ask the question about v2 support on Fedora Bugzilla
> >> for=
> >>
> >> the
> >>
> >> libcgroup package
>
> <https://bugzilla.redhat.com/buglist.cgi?classification=3DFedora&compo...
>
> >> =3Dlibcgroup&product=3DFedora&query_format=3Dadvanced>.
> >
> > Prior to the top post, I went through the Bugzilla tickets, with these
> > parameters:
> >
> > * component=libcgroup
> > * order=changeddate DESC
> > * product=Fedora
> > * query_format=advanced
> >
> > and the hits dating back to 2015[fn:1] were just a dozen, none making
> > mention
> > of v2. So, I am not sure whether opening feature requests would help.
>
> Fedora uses systemd that enforces cgroup v2. If libcgroup package is not
> compatible with cgroup v2, then libcgroup package is not compatible with
> Fedora and this is a bug and should be reported to the Fedora's Bugzilla.
>
> That's not really true. Fedora now defaults to v2 but you can still
> choose to boot to v1 instead and systemd still supports both.
Yes, that is well documented. I am not desperate to the point of fiddling with
kernel boot options, though.
>
> > By the way, what would you and (and others) recommend as a
>
> replacement for
>
> > libcgroup-tools?[fn:2]
>
> No idea. I don't use cgroups for anything on purpose. As far as I know,
> cgroups membership in Fedora is defined by systemd's logind. Whether it
> suits
> your needs, I have no idea. I also think it's possible to manage the
> membership manually by editing files in cgroup2 pseudo file system.
>
> Yes as I understand it you're not supposed to fiddle with cgroups
> manually, you're supposed to use systemd-run or something and let
> systemd do the necessary.
>
> It would probably help if the original user described what his goal
> was rather than the low level details of how he achieved that with
> cgroups v1.
Let’s say I want to compile `pandoc` with modifications of my own and many non-
default compiler options. At the same time, on the same machine, I still want
to do other stuff. `cgexec` et al. helped a lot to cap the memory and CPU usage
of tasks like that, without needing container and virtual machines setups.
Nowadays, I am into `systemd-nspawn` because it requires minimal configuration
from my end. It is still a hammer deployed to kill an ant. In pages like
`systemd.resource-control(5)`, one can read:
See the New Control Group Interfaces[1] for an introduction on how to
**make use of resource control APIs from programs.**
Great! But I do not know how to make programs consuming those APIs. The tools
talked about in this thread helped a lot and I am searching for replacement
that would fit with my low-proficiency in Devops.
That said, I read somewhere about user units, I am under the impression those
would help. Somewhere on my computer, there already many tools to accomplish
all of I need and beyond, the issue is that I have not yet met documentation
dumbed down enough to make me see the light.
>
> Tom
>
> --
> Tom Hughes (tom(a)compton.nu)
> http://compton.nu/
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