Mete Durlu 0d6e63abdc hyptop: Calculate sample time delta for physical partition ...

Physical machine information does not include any monotonically
increasing time field like other per CPU information blocks. This
Prevents the percentage calculation for the physical information fields
as the divisor(time_delta) is missing;

field% = (value_current - value_previous) / time_delta

To circumvent that, use the current partition's per CPU online time
values to calculate the time_delta. Integrate time_delta as a new
field(phys_delta_us) specific to the physical systems.

Explicitly CPU0 online time is used, since CPU0 is always online
and cannot be deconfigured on s390x. Its online-time deltas would
match those of the physical CPUs.

Since a new field has to be used for physical systems a new
column in the table also has to be created but instead map the
physical system field to the corresponding regular system fields
for a nicer table view.

Reviewed-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Mete Durlu <meted@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>

2025-12-10 14:40:51 +01:00

11 KiB

Raw Blame History

View Raw