What is the command to find the RAM size in computer? I want to see result in MB.
The output of the free command that I fired on my linux host is as belows:
free
total used free shared buff/cache available
Mem: 263846320 47746620 3290072 1140808 212809628 214382420
Swap: 0 0 0
I am not able to figure out what this available part is specifying. The free memory is very less shown i.e around 1.24% even though the total memory is way high and used memory is around 18.09% only.
free -h
total used free shared buff/cache available
Mem: 251G 45G 3.1G 1.1G 202G 204G
Swap: 0B 0B 0B
Does it mean I wont be able to start more applications as free memory is very less. The used memory is 18% only. So shouldn't free memory be 72% and not 1.24% as the command is showing above.
I am confused. Can anyone help?
How shall I find out the frequency and type of my current RAM? My OS is Ubuntu 12.04.
I would like to know what are the drawbacks of using preload? If there would be no downside, preload would be enabled by default, so I guess there are some.
Okay you need a bit more RAM, but most people have by far more RAM then Ubuntu needs - so what are the downsides of using preload?
I read many places that the rule of thumb for swap space is to double the amount of physical RAM. However, 32 GB does seem a LOT. Do I need that much? Do I need it at all with this high amount of physical RAM?