Re: kworker/u32:5+btrfs-delalloc using 100% CPU

Johannes Thumshirn
2021-12-03T08:10:03Z

On 03/12/2021 00:23, Tomasz Chmielewski wrote:
> On two of my servers running Linux 5.15.5 I can observe
> kworker/u32:5+btrfs-delalloc process using 100% CPU.
>
> The servers receive files with rsync and I suspect that because of that
> process using 100% CPU, the speed is very slow, less than 1 MB/s over a
> gigabit network.
>

Hi,

We're currently working on a similar hang with btrfs on zoned
block devices. Which brings me to the question, are you seeing this issues
on a zoned device, like an SMR drive, or on a regular device?

Thanks,
Johannes