The freq_step setting changes the size of the frequency step the governor uses to change CPU frequency in either direction.
freq_step 设置修改调控器在调整 CPU 频率时使用的频率步长（包括提高和降低两个方向）。
It's perfectly possible to run make with -j on machines not running distcc, and setting -j to 2 on a single CPU can sometimes speed things up (but not significantly).
完全有可能在没有运行distcc的机器上使用- j来运行make，在单cpu机器上将- j设置为2有时会加快运行速度(但不明显)。
Spinning down the hard disk and setting a reduced CPU speed setting can be performed for any time range when the CPU and disk activity is below a set threshold.
让硬盘停转并且降低CPU速度可以在CPU及磁盘活动低于设定阈值的任何时间范围内执行。
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