This policy sets the link to the second lowest power state (PARTIAL) when there is no I/O on the disk. This mode is designed to allow transitions in link power states (for example during times of intermittent heavy I/O and idle I/O) with as small impact on performance as possible. This may save significant amount of power in idle periods of the link, especially on laptops. E.g. on x240 the average AC power consumption dropped from approx. 5 W to only 2.5 W. Signed-off-by: Jaroslav Škarvada <jskarvad@redhat.com> |
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| tuned.conf | ||