I have notebook with 1,5ghz one core CPU, 1,5gb ram, btrfs as system fs. Before btrfs it was there ext4. Overall system is slow, it takes a lot of to start any application, or change...despite, there is only 10% of RAM in use, no SWAP.
In fstab is activated space_cache. SO it seems this is caused by btrfs...but I am not sure.
Can anybody help to find it out?
How to change fs to ext4, or what is best way to backup system on btrfs and then restore it on ext4?