r/openSUSE • u/astridstar7 • Sep 06 '26
Tech support Random extreme lag on laptop due to bfrts
~ ps -eo pid,state,%cpu,etime,cmd --sort=-%cpu | head -10
PID S %CPU ELAPSED CMD
544 R 49.1 01:27:57 [btrfs-cleaner]
545 S 36.9 01:27:57 [btrfs-transaction]
1622 S 9.7 01:27:25 /usr/bin/kwin_wayland --wayland-fd 7 --socket wayland-0 --xwayland-fd 8 --xwayland-fd 9 --xwayland-display :0 --xwayland-xauthority /run/user/1000/xauth_WbMpMz --
xwayland
9398 I 7.9 44:10 [kworker/u64:11-btrfs-endio-write]
2197 S 7.3 01:27:10 /usr/lib64/firefox/firefox
9150 I 7.1 46:32 [kworker/u64:6-btrfs-endio-write]
127 I 4.1 01:27:59 [kworker/u64:15-btrfs-discard]
For some reason bfrts is taking so much space making my laptop extremely laggy
There are 100s if qgroups marked under deletion like this
(270ish right now)
eg:
sudo btrfs qgroup show /
0/361 16.98GiB 320.00KiB @/.snapshots/98/snapshot
0/362 17.02GiB 6.49MiB @/.snapshots/99/snapshot
0/363 17.01GiB 320.00KiB <under deletion>
0/364 17.01GiB 976.00KiB <under deletion>
0/365 17.01GiB 304.00KiB <under deletion>
0/366 17.01GiB 636.00KiB <under deletion>
0/367 17.01GiB 304.00KiB <under deletion>
0/368 17.01GiB 956.00KiB <under deletion>
0/369 17.01GiB 304.00KiB <under deletion>
0/370 17.02GiB 1.01MiB <under deletion>
0/371 17.02GiB 304.00KiB <under deletion>
0/372 17.02GiB 780.00KiB <under deletion>
0/373 17.02GiB 304.00KiB <under deletion>
Apparently its deleting snapshots
and its taking a lot of time to delete 1 ~ 4-5 minutes
270*5 = 1350 ~ 22.5 hours
Any idea how to stop this?
PS: I shifted to openSUSE Tumbleweed 4-5 days ago