SLES12SP4: Swapping Behavior
we have some strange swapping behavor.
Using SLES12SP3 we had no major swapping with vm.swappiness = 0
After Upgrading to SLES12SP4 we had some crashes because the operation system could'nt swap. We figure out that vm.swappiness = 0 disables swapping now. So we modify the parameter to vm.swappiness = 1, to enable swapping at all.
With SLES12SP4 and vm.swappiness = 1 we observe a more progressive swapping. The servers swaps out small amounts of memory, even if there is enough memory available. Especially updating with zypper creates a swap with few KB.
Do you have informations about that behaviour?