Before revision:  On the basis of BOPS, we propose a new Roofline performance model for DC computing , which we call DC-Roofline model, with which we optimize DC workloads with the improvement varying from 119\% to 325\% .
After revision:  On the basis of BOPS, we propose a new Roofline performance model for DC computing , which we call DC-Roofline model, and all workloads have achieved performance improvements ranging from 1.1X to 4.4X. Furthermore, as the real DC workload always has million lines of codes and tens of thousands of functions, it is not easy to use the DC-Roofline model directly. We propose an optimization methodology for the real-world DC workloads. Under the guidance of the proposed methodology, we optimize Redis by 1.2X .