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

nfs performance tuning for hp-ux 11.0 and 11i systems page 76

Notes:

Page 76July 22, 2002

cachefs

• What is it?

• How does it work?

• What are its limitations?

• Caching Application

Binaries

• CacheFS Performance

Considerations

• Should you use CacheFS?

• Measuring Effectiveness

This section begins by describing how CacheFS works and the potential benefits it

can provide. This is followed by a list of the many limitations of CacheFS, and why

it may not provide the promised benefits in every environment.

Next is a discussion of the unique considerations to understand when using

CacheFS to cache application binaries, and how to best configure CacheFS when

used to front NFS-based applications. This section describes an HP-specific

CacheFS enhancement called the rpages mount option, and how this mount option

influences CacheFS behavior and performance.

Following this is a discussion of the many ways you can configure your CacheFS

clients to achieve optimal caching performance. This is followed by a discussion of

whether CacheFS should be considered for your environment or not. Finally, for

those customers who choose to implement CacheFS, are some guidelines for

determining conclusively whether CacheFS is actually providing a benefit in your

environment.