Internet Express for Tru64 UNIX Version 6.10 Administration Guide (5900-1418, March 2011)

Tuning Kernel Attribute Values
By tuning attribute values in the following kernel subsystems, you can optimize the Internet-related
services running on your AlphaServer system for various process loads, system configurations,
network topologies, and other conditions:
• Generic subsystem (generic)
• Internet subsystem (inet)
• Network subsystem (net)
• Process subsystem (proc)
• Socket subsystem (socket)
• Virtual memory subsystem (vm)
For detailed information on how each kernel subsystem attribute affects the performance of Internet
services on an AlphaServer system, see Tuning Compaq Tru64 UNIX for Internet Services, available
at the following URL:
http://h30097.www3.hp.com/docs/internet/TITLE.HTM
To use the Administration utility to tune Internet-related kernel subsystem attributes, follow these
steps:
1. Ensure that JavaScript is enabled in your browser preferences.
2. From the Administration utility Main menu, choose Manage Components.
3. From the Manage Components menu, under System, choose Tune the Kernel for Internet
Services.
The Administration utility queries the running kernel (using the sysconfig -q command)
and the system configuration file (using the sysconfigdb -l command) to obtain the values
to display in the Run-Time Value and Boot-Time Value text fields, respectively.
If any messages occurred while the Administration utility was building the Tune the Kernel for
Internet Services form, a link appears at the top of the form. Click on this link for details.
4. Use either of the following methods to tune the values in these text fields:
• Type a value in the Run-Time Value field to change the value in the running kernel.
Type a value in the Boot-Time Value field to replace the value in the /etc/sysconfigtab
file.
• Click on one of the following buttons in the Suggested Values column:
◦ Recommended—Sets both the Run-Time Value and the Boot-Time Value to the
optimized value recommended for AlphaServer systems with average loads, under
normal conditions, and typical server hardware and network configurations.
Note:
Because AlphaServer configurations differ, and a recommended value might not
provide optimal performance for all configurations, exercise caution when modifying
attribute values.
◦ Current—Sets both the Run-Time Value and Boot-Time Value to the run-time value the
attribute had when the form was initially displayed.
◦ Default—Sets both the Run-Time Value and the Boot-Time Value to the default setting
for the attribute.
5. To set the attribute values as shown on the form, click on Submit. To discard any changes you
made, click on Reset.
Run-Time Value changes are set in the running kernel and take effect immediately.
Accessing Web-Based System Management Tools 27