Compaq 300 manual # sysconfig -qsubsystemname

Installation (Compaq Tru64 UNIX)

You can then display the values set for particular parts of a given subsystem, such as "vm" or "proc", as shown:

#sysconfig -qsubsystem_name

In this command, the value of subsystem_name is "vm" or "proc".

The /etc/sysconfigtab configuration file is read during bootup, and sets the values appropriately.

When using CAD/CAM/CAE or similar three-dimensional graphics applications on Tru64 UNIX, one step that frequently helps improve performance is to add the following line to the end of the /etc/sysconfigtab file:

vm: ubc-borrowpercent = 50

More advanced tuning of your Tru64 UNIX system depends on the type of user activity and data files. For example, if you perform occasional assembly modeling operations with numerous view and edit operations on individual components, adding the following lines to the end of the /etc/sysconfigtab file can also improve performance:

vm:

vm-maxvas = 1610612736

proc:

per-proc-data-size = 268435456 max-per-proc-data-size = 1610612736 per-proc-stack-size = 4194304 max-per-proc-stack-size = 48000000 max-per-proc-address-space = 1610612736

This technique is a suggested first level of tuning to try for average workloads. To achieve the best possible performance on your system, however, you should consult the Tru64 UNIX tuning documentation, experiment with the different tuning techniques proposed, and monitor the results while your application is running.

PowerStorm 300 AGP and 300/350 PCI Graphics Controllers 6–9