On Fri, Apr 08, 2022 at 05:31:06PM +0800, brookxu.cn wrote: > From: Chunguang Xu <brookxu@xxxxxxxxxxx> > > In the current implementation, cpu_time and rq_time should be > in nanoseconds, so this document needs to be modified. I agree that this is wrong, but we shouldn't be changing the units of measurement reported to userspace without changing the schedstats version. I suspect this was an inadvertent change, and we should be converting from sched_clock() time (~= ns) to jiffies in show_schedstat(). Adding scheduler experts. > Signed-off-by: Chunguang Xu <brookxu@xxxxxxxxxxx> > --- > Documentation/scheduler/sched-stats.rst | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/Documentation/scheduler/sched-stats.rst b/Documentation/scheduler/sched-stats.rst > index dd9b99a..9078a27 100644 > --- a/Documentation/scheduler/sched-stats.rst > +++ b/Documentation/scheduler/sched-stats.rst > @@ -56,9 +56,9 @@ Next two are try_to_wake_up() statistics: > > Next three are statistics describing scheduling latency: > > - 7) sum of all time spent running by tasks on this processor (in jiffies) > + 7) sum of all time spent running by tasks on this processor (in nanoseconds) > 8) sum of all time spent waiting to run by tasks on this processor (in > - jiffies) > + nanoseconds) > 9) # of timeslices run on this cpu > > > -- > 1.8.3.1 >
