Tunable Base Page Size

3
Static tuning only
The base_pagesize tunable is not dynamic: any change requires a reboot to take effect.
Installing Tunable Base Page Size enhancement
The code to enable the Tunable Base Page Size enhancement is available as a set of patches in
Update 3 to HP-UX 11i v3.
Updating the HP-UX core
All of the files needed to update the HP-UX 11i v3 core for the Tunable Base Page Size enhancement
are installed as a consequence of installing the patch PHKL_38038. A reboot following installation is
required. Installing the enhancement does not change system behavior in any way. It is required to
in increase the base_pagesize tunable above its default value of 4 to change the system behavior.
Updating system utilities
A number of system utilities are sensitive to the base page size, and so must be updated before they
are used on a system with the base page size tuned to a value larger than the default. Since these
utilities are not part of the core, they are not installed along with PHKL_38038. Table 1 shows the
utilities that must be updated if they are used with large base pages:
Table 1. Utilities requiring update before use with large base pages
Utility
Minimum required
version
Included in Update 3?
Java Virtual Machine,
version 4
1.4.2.19
YES, as T1457AA version 1.4.2.19
Java Virtual Machine,
version 5
5.0.13
YES, as Java15JRE version
1.5.0.13.00
Java Virtual Machine,
version 6
6.0.1
YES, as Java60JRE version
1.6.0.01.00
ONC+
B.11.31.01
YES, as ONCplus version
B.11.31.04
FiberChannel td driver
B.11.31.0809
YES, as FibrChanl-00 version
B.11.31.0809
HP SIM
5.2 Update 2
YES, as HPSIM-HP-UX version
C.05.02.02.00