红帽全球峰会2.3. Kepler 硬件和虚拟化支持
Kepler 是电源监控的关键组件，它通过以下方法之一从节点收集实时功耗数据：
- 内核电源管理子系统（首选）
-
rapl-sysfs: 需要访问/sys/class/powercap/intel-rapl主机文件。 -
rapl-msr: 需要访问/dev/cpu/*/msr主机文件。
-
estimator电源源如果没有访问内核电源上限子系统，Kepler 使用机器学习模型来估算节点上 CPU 的功耗。
警告estimator目前只是实验性的功能，它不被支持，用户不应依赖它。
您可以使用 Power Monitoring / Overview 仪表板来识别节点的电源估算方法。
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