In data center servers, power management (PM) exploiting Dynamic Voltage and Frequency Scaling (DVFS) for processors can play a crucial role to improve energy efficiency. However, we observe that current PM policies (i.e., governors) not only considerably increase tail response time (i.e., violate a given Service Level Objective (SLO)) but also hurt energy efficiency. Tackling limitations of current PM governors, we propose NMAP, Network packet processing Mode-Aware Power management. NMAP improves energy efficiency while satisfying given SLOs, considering packet processing status on a core for PM by monitoring transitions between network packet processing modes – interrupt and polling. Tracking the transitions, NMAP detects moments that a core cannot process packets fast enough and forces the core to immediately raise the voltage and frequency (V/F) state. As a result, NMAP can provide not only low response time but also low energy consumption. Our experiment shows that NMAP improves tail response time by up to 4.1× compared with the ondemand governor, reducing energy by up to 44.6 percent compared with the performance governor.

中文翻译：

---

数据中心服务器的网络数据包处理模式感知电源管理

在数据中心服务器中，利用处理器的动态电压和频率调节 (DVFS) 的电源管理 (PM) 可以在提高能源效率方面发挥关键作用。然而，我们观察到当前的 PM 策略（即调控器）不仅大大增加了尾部响应时间（即违反了给定的服务水平目标 (SLO)），而且还损害了能源效率。解决当前 PM 州长的局限性，我们建议网络地图, N网络包处理 米颂-一种洁具 磷管理。 网络地图提高能源效率，同时满足给定的 SLO，通过监控网络数据包处理模式（中断和轮询）之间的转换来考虑 PM 内核上的数据包处理状态。跟踪过渡，网络地图检测内核无法足够快地处理数据包的时刻，并强制内核立即提高电压和频率 (V/F) 状态。因此，网络地图不仅可以提供低响应时间，还可以提供低能耗。我们的实验表明网络地图 与 4.1 倍相比，将尾部响应时间提高了 一经请求 调速器，节能高达 44.6% 表现 州长。