8000 Launched apps are not put in an individual cgroup · Issue #242 · pop-os/cosmic-applibrary · GitHub
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Launched apps are not put in an individual cgroup #242

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qwertychouskie opened this issue May 27, 2025 · 0 comments
Open

Launched apps are not put in an individual cgroup #242

qwertychouskie opened this issue May 27, 2025 · 0 comments

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@qwertychouskie
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When launching an app from the app grid, the the app is not launched in a separate cgroup.

pop-os@pop-os:~$ find /sys/fs/cgroup/user.slice/user-$(id -u).slice/user@$(id -u).service/app.slice/ -type d -iname "app-*"
/sys/fs/cgroup/user.slice/user-1000.slice/user@1000.service/app.slice/app-at\x2dspi\x2ddbus\x2dbus@autostart.service
/sys/fs/cgroup/user.slice/user-1000.slice/user@1000.service/app.slice/app-geoclue\x2ddemo\x2dagent@autostart.service
/sys/fs/cgroup/user.slice/user-1000.slice/user@1000.service/app.slice/app-pop\x2dflatpak\x2drepos@autostart.service
/sys/fs/cgroup/user.slice/user-1000.slice/user@1000.service/app.slice/app-cosmic-com.system76.CosmicAppList-4376.scope
/sys/fs/cgroup/user.slice/user-1000.slice/user@1000.service/app.slice/app-dbus\x2d:1.37\x2dorg.a11y.atspi.Registry.slice
/sys/fs/cgroup/user.slice/user-1000.slice/user@1000.service/app.slice/app-print\x2dapplet@autostart.service

When launching from the search, the app is launched in a separate cgroup with an assigned cgroup name as expected (app-cosmic-com.system76.CosmicEdit-<number>.scope in this case):

pop-os@pop-os:~$ find /sys/fs/cgroup/user.slice/user-$(id -u).slice/user@$(id -u).service/app.slice/ -type d -iname "app-*"
/sys/fs/cgroup/user.slice/user-1000.slice/user@1000.service/app.slice/app-at\x2dspi\x2ddbus\x2dbus@autostart.service
/sys/fs/cgroup/user.slice/user-1000.slice/user@1000.service/app.slice/app-geoclue\x2ddemo\x2dagent@autostart.service
/sys/fs/cgroup/user.slice/user-1000.slice/user@1000.service/app.slice/app-pop\x2dflatpak\x2drepos@autostart.service
/sys/fs/cgroup/user.slice/user-1000.slice/user@1000.service/app.slice/app-cosmic-com.system76.CosmicAppList-4376.scope
/sys/fs/cgroup/user.slice/user-1000.slice/user@1000.service/app.slice/app-dbus\x2d:1.37\x2dorg.a11y.atspi.Registry.slice
/sys/fs/cgroup/user.slice/user-1000.slice/user@1000.service/app.slice/app-print\x2dapplet@autostart.service
/sys/fs/cgroup/user.slice/user-1000.slice/user@1000.service/app.slice/app-cosmic-com.system76.CosmicEdit-5214.scope

Tested in a VM using the latest COSMIC alpha ISO (pop-os_24.04_amd64_intel_17.iso).

Why this matters

Proper cgroup assignment is important for modern system monitoring utilities (e.g. Mission Center) to be able to differentiate running applications from system processes. See https://gitlab.com/mission-center-devs/mission-center/-/issues/231 for info on which DEs currently handle this.
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