Reconfiguring the Kernel in HP-UX Release 11i Version 1.5

Reconfiguring the kernel in HP-UX Release 11i Version 1.5
Reconfiguring the Kernel
Chapter 16
configuring a large number of file systems (approximately 100 or more),
some default table sizes in the kernel may be too small for your system to
successfully boot. To boot your system, reconfigure the install kernel
before the first boot. Refer to the section “Steps to Reconfigure the
Kernel” on page 6 to perform this, keeping in mind that SAM is not
available at this point. The following settings, although not necessarily
optimal for the system, will allow the kernel to be booted:
Alternatively, you can do the following:
• Reconfigure the kernel and change the value of mixers to a large value, such
as 200.
• Select an appropriate bundle of SAM-tuned parameters by doing the
following:
— Open the “SAM Kernel Configuration” menu item
— Select “Configured Parameters”
— Pull down the “Actions” menu
— Select “Apply Tuned Parameter Set”
For further details, refer to Installing HP-UX 11.0 and Updating HP-UX 10.x to
11.0.
Steps to Reconfigure the Kernel
You can use SAM or HP-UX commands to reconfigure the kernel.
To use SAM to reconfigure the kernel, log in as the superuser, ensure you are logged on to the
machine for which you are regenerating the kernel, and start SAM. Select the Kernel
Configuration menu item; use SAM’s online help if needed. Generally, SAM is simpler to use
than the equivalent HP-UX commands.
SAM will also help you determine whether a whole kernel configuration and/or system reboot
are necessary, or if a dynamic configuration of the running kernel is all you need (for example,
Table 1-1 useradd Options
Kernel Parameters Default Recommended Setting
ninode 476 2048
nproc 276 1024
nfile 790 2048