Am 05.09.2017 um 07:58 schrieb Stefan Priebe - Profihost AG:
> Hello,
>
> while expecting slow btrfs volumes i switched to kernel v4.13 and to
> space_cache=v2.
...
>
> Is btrfs trying to hard to find free space?
Even nobody replied - i reply to myself. I could completely "fix" this
by using
Hello,
while expecting slow btrfs volumes i switched to kernel v4.13 and to
space_cache=v2.
But i'm still expecting slow performance and single kworker processes
using 100% CPU.
Tracing the kworker process shows me:
# sed 's/.*: //' /trace | sort | uniq -c | sort -n
21595
