On 4 June 2015 at 16:27, Trent W. Buck <[email protected]> wrote: > Craig Sanders <[email protected]> writes: > > > [...] to be able to suspend to disk > > [...] you need at least as much swap as RAM. > > AIUI in a situation like this, > I'd need 256MiB (not 2GiB) of swap to suspend-to-disk. > > $ free -m > total used free shared buffers > cached > Mem: 1884 1178 706 269 0 > 966 > -/+ buffers/cache: 211 1673 > > ...but I guess the space saved is not worth the cost of being unable to > suspend-to-disk when firefox is open. > > Curious as to how you came to that conclusion?
I found a couple of references to /sys/power/image_size as being the factor that deteremines how big the suspend-to-disk image will be. According to https://www.kernel.org/doc/Documentation/power/interface.txt it's set to 2/5 of availanble RAM by default, as is the case on my home media server where it's set to 2/5 of 16Gb i.e. 6641303552 bytes. You can change of course and apparently setting it to zero causes the kernel to create the smallest image possible. -- Colin Fee [email protected]
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