On 9/6/19 12:08 PM, Stefan Priebe - Profihost AG wrote: > These are the biggest differences in meminfo before and after cached > starts to drop. I didn't expect cached end up in MemFree. > > Before: > MemTotal: 16423116 kB > MemFree: 374572 kB > MemAvailable: 5633816 kB > Cached: 5550972 kB > Inactive: 4696580 kB > Inactive(file): 3624776 kB > > > After: > MemTotal: 16423116 kB > MemFree: 3477168 kB > MemAvailable: 6066916 kB > Cached: 2724504 kB > Inactive: 1854740 kB > Inactive(file): 950680 kB > > Any explanation? How does /proc/pagetypeinfo look like? Also as Michal said, collecting the whole of /proc/vmstat (e.g. catting it to vmstat.$TIMESTAMP once per second) when the bad situation is happening, would be useful. You could also try if the bad trend stops after you execute: echo never > /sys/kernel/mm/transparent_hugepage/defrag
