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2.7. perf
perf 工具通过使用硬件性能计数器和内核跟踪程序来追踪其他命令和应用程序对系统的影响。不同 perf 子命令显示并记录常见性能活动的统计数据，并对数据进行分析和报告。
关于 perf 及其子命令，详情请见 第 A.7 节 “perf”。
此外，欲了解更多信息，请参见红帽企业版 Linux 7 《Developer Guide》，可从 http://access.redhat.com/site/documentation/Red_Hat_Enterprise_Linux/ 中获取。
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