rdisp/time_intervals is a SAP Parameter attribute which is used to control Activate/deactivate kernel time intervals information. This is available within R/3 SAP systems depending on the version and release level.
Below is the standard documentation available and a few details of the attributes values .
You can use this parameter to activate additional kernel statistical
information about RFC. It is only for SAP test purposes and is set to
OFF by default (additional statistics not active).
See SAP Parameter Documentation for full SAP documentation for this profile parameter.