NFS Performance Tuning for HP-UX 11.0 and 11i Systems

nfs performance tuning for hp-ux 11.0 and 11i systems page 22

Notes:

Page 22July 22, 2002

Performance Enhancing Functionality

Added in Patches

• Many NFS components have been added to the HP-UX

11.0 release after the original release, including:

Ø AutoFS

Ø NFS over TCP/IP

Ø NFS PV3 read and write buffer sizes increased from

a maximum of 8KB to 32KB

patching

In addition to defect fixes, on occasion the NFS lab includes new functionality in

their mega-patches. Many of these enhancements directly impact the performance

of our NFS implementation.

In March 2000, the NFS lab shipped patches that allowed NFS to run over the

TCP/IP transport protocol. This allows NFS to behave more reliably and perform

better over wide area networks. At the same time, the lab increased the read and

write buffer sizes of the PV3 mount points from a maximum size of 8KB to the

industry standard 32KB. This increased buffer size helps HP’s implementation

achieve much higher read and write throughput numbers than with our previous

8KB limitation.