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A.11. perf_event
当
perf_event 子系统被附加到层级时,该层级中所有 cgroup 都可以用来将进程和线程分组,之后可以使用 perf 工具对这些进程和线程监控,这与监控单独进程、独立线程或者单个 CPU 相反。使用 perf_event 子系统的 cgroup 不包含任何特殊可调参数,除了〈第 A.12 节 “常用可调参数”〉列出的常用参数。
关于如何使用 perf 工具来监控 cgroup 任务,请参阅《Red Hat Enterprise Linux 开发者指南》,具体请访问 http://access.redhat.com/knowledge/docs/Red_Hat_Enterprise_Linux/ 。

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