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delayacct: Document task_delayacct sysctl

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Update sysctl/kernel.rst.

Signed-off-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20210512114035.GH3672@suse.de
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Mel Gorman 2021-05-12 12:40:35 +01:00 • committed by Peter Zijlstra
parent 90a0ff4ec9
commit fcb5017045
1 changed files with 7 additions and 0 deletions
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Documentation/admin-guide/sysctl/kernel.rst
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@ -1087,6 +1087,13 @@ Model available). If your platform happens to meet the
requirements for EAS but you do not want to use it, change requirements for EAS but you do not want to use it, change
this value to 0. this value to 0.
task_delayacct
===============
Enables/disables task delay accounting (see
:doc:`accounting/delay-accounting.rst`). Enabling this feature incurs
a small amount of overhead in the scheduler but is useful for debugging
and performance tuning. It is required by some tools such as iotop.
sched_schedstats sched_schedstats
================ ================