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Anybody else having BTRBK slowing down system
Hello there! I have used BTRBK for a while, but since, what I'm assuming here, kernel updates since maybe 6.12, I notice that during some stages of the process of btrbk run or btrbk resume, it slows the rest of the system, making browsers, file managers, etc. unresponsive for some seconds, minutes sometimes. When I check its resource consumption, it doesn't look like it is taking too much. I am also assuming here that at some stage it consumes more I/O than it should. I'm trying to use btrbk run more than once a day because I also noticed that doing it sporadically, as I used to do, makes it worse too.
My laptop system info
OS: Fedora Linux 42 (Workstation Edition) x86_64
Host: 82CF (LEGION 5 15IMH)
Kernel: Linux 6.14.8-cachyos1.fc42.x86_64
WM: Hyprland 0.49.0 (Wayland)
CPU: Intel(R) Core(TM) i7-10750H (12) @ 5.00 GHz
GPU: NVIDIA GeForce RTX 2060 Mobile [Discrete]
Memory: 4.76 GiB / 15.52 GiB (31%)
Swap: 2.21 GiB / 15.52 GiB (14%)
Disk (/): 378.30 GiB / 929.50 GiB (41%) - btrfs
Disk (/mnt/Mnemosyne/Proton): 653.22 GiB / 931.50 GiB (70%) - btrfs
On both Fedora and CachyOS kernel and both Gnome and Hyprland it happens. I started noticing it when I used only Gnome.
Are btrfs quotas enabled? If so, try disabling them.
No, not enabled. I never used it.
doas btrfs filesystem usage /
Overall:
Device size: 929.50GiB
Device allocated: 436.02GiB
Device unallocated: 493.47GiB
Device missing: 0.00B
Device slack: 0.00B
Used: 408.09GiB
Free (estimated): 510.12GiB (min: 263.39GiB)
Free (statfs, df): 510.12GiB
Data ratio: 1.00
Metadata ratio: 2.00
Global reserve: 512.00MiB (used: 0.00B)
Multiple profiles: no
Data,single: Size:402.01GiB, Used:385.35GiB (95.86%)
/dev/mapper/luks-drive 402.01GiB
Metadata,DUP: Size:17.00GiB, Used:11.37GiB (66.87%)
/dev/mapper/luks-drive 34.00GiB
System,DUP: Size:8.00MiB, Used:64.00KiB (0.78%)
/dev/mapper/luks-drive 16.00MiB