We find that the average dialog response time shown in SLR and EWA reports of Solman is much lower (250 ms) whereas the dialog response time shown in ST03 transaction of the system (XI instance) is high 2000 ms.
Which one is correct and how can I correlate these two values if both are right in their own way.
The data source is ST03, therefore unless there is an issue with the collectors, you should assume the ST03 data is correct.
Pleae run RTCCTOOL on the managed system and ensure ST-PI and ST-A/PI are current.. Also make sure your SAPOSCOL is current.
There is a possibility that there was an error during preparing the transport to send the data back to Solution Manager, so scan the SDCCN task logs for any errors/warnings on the managed system. You can also check the transport to see what vaues are being returned to Solman's service session. If the have the same value as ST03 at this point, then there is an issue witht eh EWA/SLR provcessing. If the data is not the same here as ST03 then there was an issue with the SDCCN tasks.
If the data collection is not at issue and the transfering of that data to Solution Manager service session had no errors, then Please follow Jared's recommendation, as this would then be an issue processing the service sessions, and this could be due to outstanding Service Content updates. This can be checked with transaction code AGS_UPDATE.