The research content of this paper is mainly to obtain hardware topology information of LS3A3000 processor and access to the performance management unit.By specifying the event type,the number of related events in the PMU is obtained to analyze the cause of performance bottlenecks.The performance bottleneck analysis tool is integrated into the Eclipse development environment as a plug-in through Eclipse plug-in technology,providing a graphical user interface for programmers,enables programmers to obtain relevant information more intuitively,so that they can find performance bottlenecks in the program in time and locate them during the development process.