我在台式机上运行 Ubuntu 15.04，配备 6 核 5930K 处理器、msi x99s 主板、32gb 内存、ssd 和 nvidia gtx 980ti。令人惊讶的是，整体系统性能远低于预期，比我的笔记本电脑慢得多。至少乍一看，因为计算机是新的，我没有机会在上面运行大量计算。似乎问题的根源在于新的 intel_pstate 驱动程序保持较低的 CPU 频率。
实际上， cpufreq-info 的输出是
analyzing CPU 0:
driver: intel_pstate
CPUs which run at the same hardware frequency: 0
CPUs which need to have their frequency coordinated by software: 0
maximum transition latency: 0.97 ms.
hardware limits: 1.20 GHz - 3.70 GHz
available cpufreq governors: performance, powersave
current policy: frequency should be within 3.70 GHz and 3.70 GHz.
The governor "performance" may decide which …