On 09/09/2017 07:55 AM, Nicolas Kovacs wrote: > Le 09/09/2017 à 14:41, Phil Perry a écrit : >> Why were you surprised? Linux systems use the available RAM, surely you >> understand that? > > I'm surprised because my system used the available RAM and then it even > began to swap. > >> >> Of course there is the possibility that you have discovered a bug > > Minimal CentOS 7 installation with BIND, Apache, MySQL, Postfix and > Dovecot, regularly updated. > > Hence my post. Wondering if other CentOS users experienced something > similar. Every system that runs continuously for more that a few days will have some pages that were used once when some long-running process started and were never referenced again. Those pages will eventually migrate out to swap, and that's the best place for them. Right now, I see that this system has been up for 16 days and has ~270MB of swap used. I typically see ~500MB of swap used when the system has been running a while longer. -- Bob Nichols "NOSPAM" is really part of my email address. Do NOT delete it.