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	fnordianslip	2010-06-04 , 19:58
	Posts: 670 \| Thanked: 359 times \| Joined on May 2007	#15

Originally Posted by zimmerit

Actually I was looking for reasons for short standby battery life (~30 hours), never had any problems device being slow with any programs

But does ram usage affect on that, if cpu usage stays around 0-3 % all the time?

Dynamic RAM (DRAM) like we have in these devices consumes power whether it is in use or not (for most definitions of 'in use'). So, the amount of RAM provided is subject to a tradeoff against battery life.

Linux prefers to use RAM for disk/file caching than to leave it unused, as unused RAM is a waste of space and power (and RAM). Swapping to/from the eMMC might consume more power though, not sure, but if you're idling at 3%, then you're probably not swapping.

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