The server has about 24GB memory. By running
free -g I find the memory is used up
total used free shared buffers cached Mem: 23 23 0 0 0 18 -/+ buffers/cache: 4 19 Swap: 56 2 53
Then I did some research into what has used up all these memory by
M. But it seems the memory is quite free in the
What can I do to free some memory? This is a server for calculation so it is better not to restart the computer.