On 7/27/21 6:23 PM, David Airlie wrote:
Hi,
I've been using f34 with gnome/wayland session on a 16MB machine which
has 8GB zram swap configured.
If I build anything large inside my desktop environment (llvm/clang)
from a gnome-terminal, systemd-oomd blows away my whole desktop slice.
This seems overly hostile.
Now in theory I can use systemd-run to run a shell but my
understanding is the DE is meant to be smarter here.
Is it at least launching firefox etc in new cgroups or are all
processes on my desktop in one big cgroup?
IIRC, gnome-terminal supposed to put each tab into a new cgroup. And
Gnome would create cgroup for each desktop application started via Gnome
shell or glib functions.
While it's still a bit fragile and there's a lot of ways to escape (i.e.
xdg-open, third-party application launchers, starting apps from the
terminal, etc.), normal use in Gnome should work just fine.
---
From your description, something obviously went wrong: either
assignment of cgroups has failed and everything is in the same big
group, or sd-oomd made a bad shot. systemd-cgls should show which it is.
For the former, I happen to see at least one case where this outright
fails - some SELinux user roles don't have access to the required
systemd dbus interface and method call with cgroup assignment couldn't
be sent.
For the latter, I noticed that on my old hw (8GB ram) sd-oomd always
preferred to kill firefox instead of gcc. Something made cgroup with
firefox less likeable ¯\_(ツ)_/¯
Even if it launched gnome-terminal in another group I assume this
would result in it blowing away all my open terminals just to kill the
compiler/linker that is consuming all the RAM/swap. Again this seems
overly hostile.
Any ideas other than campaigning for systemd-oomd to be turned off again?
Dave.
_______________________________________________
devel mailing list -- devel@lists.fedoraproject.org
To unsubscribe send an email to devel-le...@lists.fedoraproject.org
Fedora Code of Conduct:
https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives:
https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org
Do not reply to spam on the list, report it:
https://pagure.io/fedora-infrastructure
--
With best regards,
Aleksei Bavshin
_______________________________________________
devel mailing list -- devel@lists.fedoraproject.org
To unsubscribe send an email to devel-le...@lists.fedoraproject.org
Fedora Code of Conduct:
https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives:
https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org
Do not reply to spam on the list, report it:
https://pagure.io/fedora-infrastructure
