Solution : https://service.sap.com/sap/support/notes/1063061 (SAP Service marketplace login required)
Key words : 
wp    = resptime - queuetime wait time     = queuetime roll-, time = rolloutti rollwait time = rolled_out, response time = resptime + rolled_out time, wp wait time roll-, prerequisites 'response time' refers, dispatcher wait queue rollinti, response time queuetime, time  = rollinti roll-, time rollwait time, dispatcher wait time
Related Notes : 
       
| 950019 | STAD Roll (in+wait) time in RFC/CPIC/ALE statistic records | 
| 919657 | Dialog response times in alert monitor and workload monitor |