16 Chapter 2. Computer System Requirements
• For HP-UX 11i, install the latest HP-UX 11i Quality Pack (GOLDQPK11i) patch from June 2004
or later. For details, refer to http://www.software.hp.com/SUPPORT_PLUS/qpk.html.
• The PHSS_30966: ld(1) and linker tools cumulative patch is critical before installation of Directory
Server.
• The following patches are recommended:
GOLDAPPS11i: B.11.11.0406.5 Gold Applications Patches for HP-UX 11i v1, June
2004
GOLDBASE11i: B.11.11.0406.5 Gold Base Patches for HP-UX 11i v1, June 2004
• Run the dsktune utility to see if you need to install any other patches. The utility helps you to verify
whether you have the appropriate patches installed on your system and provides useful information
and advice on how to tune your kernel parameters for best performance. For information on the
dsktune utility, see Section 2.3.1 dsktune Utility.
2.3.3.4. Tuning the System
Set your kernel parameters as follows:
• Set maxfiles to 1024.
• Set nkthread to 1328; nkthread is a computed value: (((NPROC*7)/4+16).
• Set max_thread_proc to 512.
• Set maxusers to 64.
• Set maxuprc to 512.
• Set nproc to 750.
Typically, client applications that do not properly shut down the socket cause it to linger in a
TIME_WAIT state. To prevent this, you should consider changing the TIME_WAIT setting to a
reasonable value. For example, setting
ndd -set /dev/tcp tcp_time_wait_interval 60000
limits the TIME_WAIT state of sockets to 60 seconds.
You also need to turn on large file support in order for Directory Server to work properly. To change
an existing filesystem (from one that has no large files to one that accepts large files):
1. Unmount the system using the umount command:
umount /export
2. Create the large filesystem:
fsadm -F vxfs -o largefiles /dev/vg01/rexport
3. Remount the filesystem:
/usr/sbin/mount -F vxfs -o largefiles /dev/vg01/export
For additional information and recommendations about setting these parameters, consult your
operating-system documentation.
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