Packaging for Fedora about oomd

[filbranden]

RPMs for the just released oomd v0.2.0 are available on this COPR repository:
https://copr.fedorainfracloud.org/coprs/filbranden/oomd/

Feel free to use them and please report back on how they work for you!

I'm also going to propose them for inclusion on Fedora.

Cheers,
Filipe

[filbranden]

Proposed for inclusion on Fedora:
https://bugzilla.redhat.com/show_bug.cgi?id=1750983

[hakavlad]

Please add this here https://github.com/facebookincubator/oomd#building-and-installing

[filbranden]

Will do. Preparing a PR for that right now.

[hakavlad]

@filbranden

report back on how they work for you!

1. They kill all the session instead of one process.
2. They uses 7% CPU on my VM.
3. I turned off the swap and started opening browser tabs, and in the end the system freezed.

https://imgur.com/a/FSOtqPm

Resume: they are not for desktop. Don't advise it to use on desktop. Use earlyoom or nohang on desktop instead of oomd.

[hakavlad]

I would like you to honestly document the disadvantages of using oomd on the desktop somewhere.

[danobi]

They kill all the session instead of one process.

Yeah this is most unfortunate. There's been some discussion on the fedora mailing lists about getting gnome to start applications in their own user slices. This would be more in line with how we handle things in the data center. Each cgroup should be a logical block of the system. It's kind of clowny to put all user applications in the same cgroup.

They uses 7% CPU on my VM.

This has been fixed in upstream linux. It used to be an O(N) operation to read memory.stat in a cgroup (N is the number cgroups alive and non-reclaimed yet). Now it will be O(1).

I turned off the swap and started opening browser tabs, and in the end the system freezed.

oomd needs swap. If configured correctly (see point 1), oomd will prevent swap thrashing. In theory that makes swap only useful and not bad.

[danobi]

I would like you to honestly document the disadvantages of using oomd on the desktop somewhere.

I noticed you have a short state-of-the-world in your nohang repo. I would take a patch for a wiki page in this repo for a description if you're interested.

[hakavlad]

if you're interested

yes, please (but I do not quite understand what you mean)

[filbranden]

Just wanted to leave a note here that oomd-0.2.0-4 is available on Fedora Rawhide already. (So you don't even need the COPR repository there.)

I opened tickets to push it to Fedora 31 and 30 as well (since they seem to have most of the pre-requisites available), so it may end up being included by default there.

I'll be releasing new versions of oomd to Fedora as they become available, so feel free to push fixes, new features and docs upstream and they'll eventually get into the Fedora package.

I believe this issue can be closed now, since I'd say inclusion in Fedora has been completed.

Regarding the fixes on documentation and including a state-of-the-world, perhaps this should be done on a separate issue? But feel free to keep having the discussion on this one (either keeping it closed or reopened) if you feel like this is still the place for it.

Cheers!
Filipe