When does time in SM50 turn red?

Hello everyone,

this question might sound simple but I couldn't find any answer for it in SAP Marketplace, sdn, help.sap.com and the great, wide internet: when does the processed time in SM50 turn to red?

I found some information that it's managed by the rdisp/max_wprun_time parameter. But today I saw a red process in SM50 that had a runtime (approx. 370sec) much less than the configured parameter size (3600).

Many thanks for any help.

Best wishes

Marie Renneke