This paper presents the effectiveness of an interactive support facility to tune processor allocation of data-driven realtime programs on CUE (Coordinating Users’ requirements and Engineering constraints)-series super-integrated dynamic datadriven processors. In tuning processor allocation of data-driven programs on CUE processors, one of the most critical issues is how to detect and remove sideeffects on processor loads. Especially, in multiple processing of some streams, it must be clearly identified how a peak of instantaneous load convergence comes into existence and which portion of program causes the peak. The authors have been proposed a development environment named Realtime Execution System for CUE-series data-driven processors (RESCUE). CUE processors have ideal multi-processing capability without any interference among independent processes running simultaneously. Hence, the runtime performance of CUE processor can be predicted by static analysis of the program as long as...