Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: [PATCH 4/4] sched/core: split iowait state into two states | Date | Thu, 25 Apr 2024 16:20:29 +0200 |
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On Wednesday, April 24, 2024 12:01:27 PM CEST Peter Zijlstra wrote: > On Tue, Apr 16, 2024 at 06:11:21AM -0600, Jens Axboe wrote: > > iowait is a bogus metric, but it's helpful in the sense that it allows > > short waits to not enter sleep states that have a higher exit latency > > than would've otherwise have been picked for iowait'ing tasks. However, > > it's harmless in that lots of applications and monitoring assumes that > > iowait is busy time, or otherwise use it as a health metric. > > Particularly for async IO it's entirely nonsensical. > > Let me get this straight, all of this is about working around > cpuidle menu governor insaity? > > Rafael, how far along are we with fully deprecating that thing? Yes it > still exists, but should people really be using it still?
Well, they appear to be used to it ...
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