HP-UX Reference (11i v1 05/09) - 2 System Calls (vol 5)

s
settune(2) settune(2)
[EINVAL] The specified value is not within the acceptable range for the specified parameter.
[EBUSY] The value of the parameter could not be changed immediately.
[ENOTSUP] The specified parameter cannot be changed without rebuilding the kernel.
[EIO] The Kernel Registry Service was unavailable or encountered an error.
[ENOMEM] Insufficient memory to accommodate the new parameter value.
WARNINGS
It is possible to seriously degrade system performance, or even render a system unbootable, with incorrect
tunable settings. Use care when setting tunable values. Always have a known working kernel saved as a
backup; if the system fails to boot after a tunable change, boot from that backup kernel. Keep good records
of all tunable changes so that they can be reversed if they degrade system performance. (Tunable changes
made with settune() are automatically logged to
syslog and to the Kernel Logging system.)
AUTHOR
settune() was developed by Hewlett-Packard Company.
SEE ALSO
kmtune(1M), mk_kernel(1M), gettune(2), tuneinfo(2).
Section 2342 Hewlett-Packard Company 2 HP-UX 11i Version 1: September 2005