Managing NFS and KRPC Kernel Configurations in HP-UX 11i v3 (762807-001, March 2014)

1 Introduction
NFS is a network-based application that offers transparent file access across a network. The behavior
and performance of NFS depends on numerous kernel tunables. Tunables are variables that control
the behavior of the HP-UX kernel. To achieve optimal performance, the system administrator can
modify the values of the tunables.
This white paper discusses the configurable Network File System (NFS), Kernel Remote Procedure Call
(KRPC), and Kernel Lock Manager (KLM) tunables in HP-UX 11i v3 and describes how to manage
them. Appendix A lists the tunables that were previously provided on HP-UX 11i v2 and are obsolete
on HP-UX 11i v3.
There are two kinds of tunables: dynamic and static. A dynamic tunable does not require a reboot to
activate changes whereas a static tunable does. This white paper specifies which of the listed tunables
are dynamic and also specifies when the tunables may require modification.
Disclaimer:
HP makes every effort to deliver your systems with a standard configuration that works well in most
environments. However, there are some applications that can benefit from selective and carefully
planned changes to the default settings.