When free RAM drops below a certain threshold, the kernel’s memory‐reclaimer begins to free pages.
By default the SWAP usage is 50%, means after reaching 50% of memory, the kernel will start to fill swap.
If you have enough memory, you can reduce dramatically the swap usage.
- On the left menu, go to
Your System > Your system Memory - Select the Ratio row
Ratio is the Percentage of memory that is allowed for overcommit.
It represents the percentage of physical RAM that along with the entire swap forms the total address space (allocatable memory).
The default is 50 so, quite unintuitively, only half of the RAM will be used.
- Select the field and change it to 80/90% in order to use less swap
