If I run
htop, I get different memory uses. The system is also using a small amount of swap. I understand from this question why they are reporting different values (some of the data is considered "discardable" and so included by one system and not included by the other), but not why the system has decided to use the swap? It is a GlusterFS server running the latest version (3.4.3).
Does anyone know why it is using the swap and not clearing out the "discardable" data from the physical memory and using that instead?
Is there something I can/should do, or should I just change the monitoring system to not worry about a small amount of swap usage?
Thanks for your help.