nfs3_do_readdirplus.5 (2010 09)

n
nfs3_do_readdirplus(5) nfs3_do_readdirplus(5)
(Tunable Kernel Parameters)
NAME
nfs3_do_readdirplus - turn on or off NFS version 3 readdirplus functionality on the NFS server
VALUES
Failsafe
1
Default
1
Allowed values
0: turn off NFS version 3 readdirplus functionality
1: turn on NFS version 3 readdirplus functionality
DESCRIPTION
nfs3_do_readdirplus
controls the ability to turn on or off the NFS version 3 readdirplus functional-
ity on the NFS server. If this functionality is turned off, the client is forced to use the readdir functional-
ity instead.
Who Is Expected to Change This Tunable?
The distributed file system administrator should examine this value if performance issues are being
experienced when reading large directories.
Restrictions on Changing
The
nfs3_do_readdirplus
tunable is dynamic; tuning will take effect immediately on the running
system.
What Are the Side Effects of Turning Off the Readdirplus Functionality?
By forcing the client to use readdir instead of readdirplus, the client is no longer following the NFS ver-
sion 3 protocol. If problems occur, turn
nfs3_do_readdirplus
back on.
WARNINGS
All HP-UX kernel tunable parameters are release specific. This parameter may be removed or have its
meaning changed in future releases of HP-UX.
Installation of optional kernel software, from HP or other vendors, may cause changes to tunable parame-
ter values. After installation, some tunable parameters may no longer be at the default or recommended
values. For information about the effects of installation on tunable values, consult the documentation for
the kernel software being installed. For information about optional kernel software that was factory
installed on your system, see HP-UX Release Notes at
http://www.hp.com/go/hpux-core-docs
.
AUTHOR
nfs3_do_readdirplus was developed by HP.
SEE ALSO
kctune(1M), sam(1M), gettune(2), settune(2).
HP-UX 11i Version 3: September 2010 − 1 − Hewlett-Packard Company 1