The ratio of free vnodes to vnodes in use that is to be maintained by the kernel.
Value
Default: 2:1
Range: 1:1 to 16:1, or 0 to auto-configure
When to Change
For most workstations and servers the default, auto-configured value is sufficient. Increase this parameter if you have an application that opens and closes many files frequently. When a program is opening and closing and reopening many files, the system may overflow the file buffer cache, even though the file contents are still in memory. Then the files will be read in again, wasting disk activity and time. Increasing this parameter increases the number of files that can be "remembered" by IRIX.