It analyses the implementation of Perf, and modifies the codes related to hardware architecture. It designs functions to control the performance counter in Loongson 2F and handle the overflow interruptions.
分析Perf的实现原理，针对龙芯修改Perf内核层中体系相关部分代码，设计硬件性能计数器的操作函数集和溢出中断处理函数。
参考来源 - Perf在龙芯2F上的设计与实现·2,447,543篇论文数据，部分数据来源于NoteExpress
An error occurred while attempting to publish a performance counter.
在尝试发布一个性能计数器时出现错误。
Note: This performance counter is selectable during SQL server installation.
注意：这个性能计数器可以在SQL服务器安装过程中选择。
Listing 6. Turning on the performance counter and formatting the captured data.
清单6 .打开性能计数器和格式化捕捉到的数据。
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