FastFlow: Efficient Scalable Model-Driven Framework for Processing Massive Mobile Stream Data

Figure 16

Compare global resource cost on modified topologies with Esper and Drools, including three steps: (Q2, Q3), (Q1, Q2, Q3), and (Q1, Q2, Q3, Q4).

(a) Step 1. Merge Q 2 and Q 3 into topology

(b) Step 2. Merge Q1 into topology

(c) Step 3. Merge Q4 into topology