Messages in this thread | | | From | Linus Torvalds <> | Date | Tue, 24 Aug 2021 09:34:02 -0700 | Subject | Re: 5.14-rc breaks iotop swap io monitoring. |
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On Tue, Aug 24, 2021 at 8:19 AM Dave Jones <davej@codemonkey.org.uk> wrote: > > On Tue, Aug 24, 2021 at 10:31:16AM +0200, Peter Zijlstra wrote: > > > > If you need DELAYACCT I'm thinking: > > > > e4042ad49235 ("delayacct: Default disabled") > > > > and > > > > 0cd7c741f01d ("delayacct: Add sysctl to enable at runtime") > > That does sound more relevant. however, even after echo 1 > /proc/sys/kernel/task_delayacct, > it still fails in the same way.
Hmm.
What happens if you boot with the 'delayacct' kernel parameter.
Even if you enable it at run-time, processes that have been started before it was enabled won't actually have the 'tsk->delays' allocation. So I'm not sure how effective the run-time thing is.
Linus
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