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

nfs performance tuning for hp-ux 11.0 and 11i systems page 12

Notes:

Page 12July 22, 2002

local filesystem

considerations

• Analyze Filesystem Layout

• Measure Filesystem

Throughput Capabilities

• Filesystem Tuning

Recommendations

The performance of the local filesystems (both on the NFS client and server) can

have just as big an impact to overall NFS performance as the underlying network.

Again, this shouldn’t be a surprise since NFS is an acronym for “Network File

System”. Therefore, when faced with an NFS performance issue, it is a good

idea to perform some “sanity checks” on the underlying filesystems involved before

beginning a detailed investigation into a specific area of NFS.

This section will not be describing the numerous available disk and filesystem

technologies (such as disk striping, RAID, disk arrays, etc.). NFS servers are

allowed to export any local filesystems, and NFS typically performs better with a

faster underlying disk subsystem. There is a wealth of information about the latest

and greatest filesystem technologies available from HP’s IT Resource Center:

http://itrc.hp.com and HP’s documentation repository: http://docs.hp.com.

What will be described is a recommended methodology and set of tools available

for understanding the physical layout of your filesystems, measuring their

throughput, and performing routine filesystem maintenance and troubleshooting.