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

nfs performance tuning for hp-ux 11.0 and 11i systems page 39

Notes:

Page 39July 22, 2002

Troubleshooting biods (part 1)

• NFS Client Panics

Ø Analyze the crash dump with Q4 to determine root cause

• NFS Client Application Hangs

Ø Look for biod traffic in a network trace

Ø Examine the running biod daemons on the live system with Q4

Ø Monitor “nfsstat –c” output for biod traffic

Ø When all else fails, TOC the system and analyze dump with Q4

biod

NFS Client Panics

Analyzing HP-UX system dumps is a complex and involved process, which is

typically performed only by experienced HP support personnel or lab engineers.

If your NFS client experiences a system panic, your best course of action is to

contact HP support and request that your system memory dump be analyzed.

NFS Client Application Hangs

A network trace will show if any biods are sending requests to the server.

Q4 can be used by experienced system administrators or HP support personnel

to examine the running biod daemons on the live system.

Successive nfsstat outputs can reveal whether outbound client calls are being

sent.

When all else fails, the system may need to be TOC’d, and the memory dump

analyzed by HP support personnel.