Re: [PATCH 0/10] psi: pressure stall information for CPU, memory, and IO v2

[Andrew Morton]

On Thu, 12 Jul 2018 13:29:32 -0400 Johannes Weiner <hannes@xxxxxxxxxxx> wrote:

>
> ...
>
> The io file is similar to memory. Because the block layer doesn't have
> a concept of hardware contention right now (how much longer is my IO
> request taking due to other tasks?), it reports CPU potential lost on
> all IO delays, not just the potential lost due to competition.

Probably dumb question: disks aren't the only form of IO.  Does it make
sense to accumulate PSI for other forms of IO?  Networking comes to
mind...