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

nfs performance tuning for hp-ux 11.0 and 11i systems page 59

Notes:

Page 59July 22, 2002

rpc.lockd

rpc.statd

• What are they?

• How are lock requests

handled?

• How are locks recovered

after a system reboot?

• Avoiding NFS lock hangs

• Ensuring optimal lock

performance

• Troubleshooting

This section describes how the rpc.lockd and rpc.statd daemons make up the

Network Lock Manager (NLM) protocol. It discusses how lock requests are

processed, and how locks are recovered after server failures. It also explains why

many NFS file lock hangs occur and how to avoid them. This is followed by a

discussion on the factors in your environment that can adversely affect the

performance of rpc.lockd and rpc.statd. Finally, a troubleshooting section

describes the recommended tools and procedures to use when investigating NFS

file locking issues.