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Siebel Server Installation Guide for UNIX > Tuning UNIX Operating Systems for Siebel Installation > Tuning Siebel eBusiness Applications for AIX >

Tuning Kernel Settings for AIX

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There are a number of AIX Kernel settings you can tune for optimal Siebel Server performance under AIX. These include the Virtual Memory Management and TCP settings. You must have root privileges to modify these settings.

To change the vmtune values

Using a text editor such as vi, open the /etc/rc.net file for editing.
Modify the vmtune settings as follows:

if [ -f /usr/samples/kernel/vmtune ] ; then

/usr/samples/kernel/vmtune -p 5 -P 8 -f 720 -F 752 -b 200 -s 1

Modify the socket default buffer size as follows:

if [ -f /usr/sbin/no ] ; then

/usr/sbin/no -o tcp_sendspace=24576

/usr/sbin/no -o tcp_recvspace=24576

Make sure that all User Limits (ulimit) are set to unlimited, as follows:

ulimit -a

NOTE:  To change the set limits, update the /etc/security/limits file by changing all ulimit parameter values to -1 (unlimited).

Save your changes and exit the text editor.
Restart the server to have your changes take effect.

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