Solaris Tunable Parameters Reference Manual

segmap_percent

Description

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.

Data Type

Unsigned integer

Default

12 percent of free memory at system startup time

Range

2 Mbytes to 100 percent of physmem

Units

% of physical memory

Dynamic?

No

Validation

None

When to Change

If heavy file system activity is expected, and sufficient free memory is available, you should increase the value of this parameter.

Commitment Level

Unstable