Messages in this thread | | | Subject | Re: [PATCH 0/2] iowait and idle fixes in /proc/stat | From | Tom Hromatka <> | Date | Tue, 14 Jul 2020 12:55:41 -0600 |
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Ping.
Thanks.
Tom
On 6/10/20 3:05 PM, Tom Hromatka wrote: > A customer is using /proc/stat to track cpu usage in a VM and noted > that the iowait and idle times behave strangely when a cpu goes > offline and comes back online. > > This patchset addresses two issues that can cause iowait and idle > to fluctuate up and down. With these changes, cpu iowait and idle > now only monotonically increase. > > Tom Hromatka (2): > tick-sched: Do not clear the iowait and idle times > /proc/stat: Simplify iowait and idle calculations when cpu is offline > > fs/proc/stat.c | 24 ++++++------------------ > kernel/time/tick-sched.c | 9 +++++++++ > 2 files changed, 15 insertions(+), 18 deletions(-) >
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