Introduction

In this practice, the Kunpeng Performance Boundary Analyzer is used to quickly identify performance issues. Preliminary analysis indicates a high branch misprediction rate among microarchitecture metrics, suggesting the presence of a performance bottleneck. The System Profiler is then used to analyze the microarchitecture. The CPU branch misprediction rate for conditional statements is found to be high. Examination of the source code reveals that data is not processed before these conditional statements are executed. To address this, the data is sorted in the source code, optimizing CPU branch prediction, increasing the branch prediction success rate, and improving overall application performance.