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You seem to be ignoring a very important factor here, energy consumption. RAM usage has a direct effect on battery usage and battery usage is an important facto
by amirmasoudabdol 7y ago
You seem to be ignoring a very important factor here, energy consumption. RAM usage has a direct effect on battery usage and battery usage is an important factor and selling point these days.
- jarfil 7y agoDoes it? I was under the impression that all the installed RAM got refreshed all the time whether it holds useful data or not.
- fourthark 7y agoSurely not as bad as disk.
- slovenlyrobot 7y agoRAM _capacity_ has a direct effect on energy, usage not nearly much if at all. Hardware has been around to selectively put banks into low power saving mode, but I've never heard of any commodity OS that supported anything like that. It'd require active organization of physical pages to take advantage of, if common controllers even supported it
- sephamorr 7y agoNote that most of RAM's power consumption comes from reading and writing (a function of memory clock speed). Allocating the RAM itself is likely to meaningfully increase power draw, but accessing it will.
- belltaco 7y agoAre there any benchmarks around showing this? And how much extra power draw it is.
- daeken 7y agoThe state of bits in RAM has zero effect on energy usage. Caching things in memory allows for lower power consumption, though, by preventing duplication of effort by the CPU. Edit: Originally said "zero effect on memory usage", which makes very little sense!