"HW- and SWServiceTime" reports of the DISK report group

The “HWServiceTime” and "SWServiceTime" reports are available only if the SAMPLING-DEVICE monitoring program with recording of hardware and software service times is activated. If software service times occur which are more than 10% over the hardware service times, I/O operations must sometimes wait in front of an occupied volume.
The SM2 monitoring program DISK-FILE and the SM2 online report DISK-FILE can then be used to ascertain the files affected.

If the application works with asynchronous inputs/outputs, an increased number of long software wait times can occur without a tuning measure being required or possible.