Hi, I am seeing memory.swap.current usages for the gnome-shell cgroup that seem high if I compare them to smaps_rollup for the contained processes. As I don't have an explanation, I thought I would ask here (shared memory?). What I am seeing is (see below, after a tail /dev/zero): memory.swap.current: 686MiB "Swap" lines from /proc/$pid/smaps_rollup added up: 435MiB We should be moving launched applications out of the shell cgroup before doing execve(), so I think we can rule out that as a possible explanation. I am mostly curious as we currently do swap based kills using systemd- oomd. So if swap accounting for GNOME Shell is high, then it makes it a more likely target unfortunately. Am I missing something obvious? Benjamin $ uname -r 5.16.8-200.fc35.x86_64 $ grep -H . org.gnome.Shell@wayland.service/memory.swap.current; for p in $( cat org.gnome.Shell@wayland.service/cgroup.procs ); do ls -l /proc/$p/exe; grep Swap /proc/$p/smaps_rollup; done org.gnome.Shell@wayland.service/memory.swap.current:712396800 lrwxrwxrwx. 1 benjamin benjamin 0 Feb 25 16:00 /proc/2521/exe -> '/usr/bin/gnome-shell (deleted)' Swap: 294528 kB SwapPss: 244060 kB lrwxrwxrwx. 1 benjamin benjamin 0 Feb 25 16:01 /proc/3853/exe -> /usr/bin/Xwayland Swap: 55580 kB SwapPss: 46628 kB lrwxrwxrwx. 1 benjamin benjamin 0 Feb 25 16:01 /proc/3884/exe -> /usr/bin/ibus-daemon Swap: 4104 kB SwapPss: 4104 kB lrwxrwxrwx. 1 benjamin benjamin 0 Feb 25 16:01 /proc/3891/exe -> /usr/libexec/ibus-dconf Swap: 800 kB SwapPss: 796 kB lrwxrwxrwx. 1 benjamin benjamin 0 Feb 25 16:01 /proc/3892/exe -> /usr/libexec/ibus-extension-gtk3 Swap: 13020 kB SwapPss: 11864 kB lrwxrwxrwx. 1 benjamin benjamin 0 Feb 25 16:01 /proc/3894/exe -> /usr/libexec/ibus-x11 Swap: 16284 kB SwapPss: 16284 kB lrwxrwxrwx. 1 benjamin benjamin 0 Feb 25 16:01 /proc/3931/exe -> /usr/libexec/ibus-engine-simple Swap: 312 kB SwapPss: 312 kB lrwxrwxrwx. 1 benjamin benjamin 0 Feb 25 16:01 /proc/4086/exe -> /usr/bin/python3.10 Swap: 50640 kB SwapPss: 49476 kB
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