Defines the maximum amount of memory that is used for the fast-access file system cache. This pool of memory is subtracted from the free memory list.
Unsigned integer
12 percent of free memory at system startup time
2 Mbytes to 100 percent of physmem
% of physical memory
No
None
If heavy file system activity is expected, and sufficient free memory is available, you should increase the value of this parameter.
Unstable