I use digitalocean 512 Mb droplet, with centos 6.4, 32bit. I call # top -b -n1 and see that I have only 64Mb of free memory: Mem: 510888k total, 446184k used, 64704k free, 141832k buffers OK, I have installed OpenVPN, but it eats only 0.5%, according to 'top', the rest is consumed by the system and programs, which were pre-installed. Well... may be 512Mb is a bare minimum and I should not ask for a lot, but then I create a 1 Gb droplet, with centos 6.4, 64bit, expecting to have additional 512Mb, but... when I call # top -b -n1 I see that there is only 192 Mb of free memory: Mem: 1020400k total, 827804k used, 192596k free, 24832k buffers Again, it is a clean system, nothing is running on it yet. I am also using vps from another provider and the same 1 Gb CentOS 6.4, 64bit gives completely different memory picture: Mem: 1048576k total, 278932k used, 769644k free, 0k buffers So, what is wrong with memory usage? Is it possible to do something, to have at least 512 Mb free on a 1Gb droplet?