Re: [PATCH] blk-throttle: Fix io statistics for cgroup v1

From: Tejun Heo
Date: Wed Mar 29 2023 - 14:54:39 EST


On Tue, Mar 28, 2023 at 10:23:09PM +0800, Jinke Han wrote:
> From: Jinke Han <hanjinke.666@xxxxxxxxxxxxx>
>
> Now the io statistics of cgroup v1 are no longer accurate. Although
> in the long run it's best that rstat is a good implementation of
> cgroup v1 io statistics. But before that, we'd better fix this issue.

Can you please expand on how the stats are wrong on v1 and how the patch
fixes it?

Thanks.

--
tejun