From: Tao Cui The io.latency doc says the io.stat delay field counts microseconds. The field is delay_nsec and is reported in nanoseconds. Refer to it by its real name and correct the unit. Signed-off-by: Tao Cui --- Documentation/admin-guide/cgroup-v2.rst | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst index eec99813d82d..687839cf5c73 100644 --- a/Documentation/admin-guide/cgroup-v2.rst +++ b/Documentation/admin-guide/cgroup-v2.rst @@ -2304,9 +2304,9 @@ This throttling takes 2 forms: throttled without possibly adversely affecting higher priority groups. This includes swapping and metadata IO. These types of IO are allowed to occur normally, however they are "charged" to the originating group. If the - originating group is being throttled you will see the use_delay and delay - fields in io.stat increase. The delay value is how many microseconds that are - being added to any process that runs in this group. Because this number can + originating group is being throttled you will see the use_delay and delay_nsec + fields in io.stat increase. The delay_nsec value is how many nanoseconds that + are being added to any process that runs in this group. Because this number can grow quite large if there is a lot of swapping or metadata IO occurring we limit the individual delay events to 1 second at a time. -- 2.43.0