| Date | Thu, 12 Jul 2018 16:44:22 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH 0/10] psi: pressure stall information for CPU, memory, and IO v2 |
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On Thu, 12 Jul 2018 13:29:32 -0400 Johannes Weiner <hannes@cmpxchg.org> 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...
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