Solaris Tunable Parameters Reference Manual

nca:nca_vpmax

Description

Maximum amount of virtual memory (in pages) used by NCA for caching pages. Should not be more than 75% of the total memory.

Default

25% of virtual memory

Range

1% to maximum amount of virtual memory

Dynamic?

No

When to Change

When using NCA on a system with a lot of memory (greater than 512 Mbytes). If a system has a lot of virtual memory that is not being used, increase this parameter so NCA will efficiently use this memory to cache new objects, and therefore, increase system's performance.

This parameter should be increased in conjunction with nca_ppmax. Set this parameter approximately same as nca_vpmax unless you have a system with more physical memory than virtual memory.

Commitment Level

Unstable