HP-UX 11i Version 2 Release Notes (October 2003)

General System Administration
File Systems Tunable Parameters
Chapter 4
67
• ninode (5)
• ncdnode (5)
Tunable parameters related to the static buffer cache that existed in previous HP-UX
releases are now considered obsolete. The recommended way to obtain a fixed size buffer
caches is to set the value or tunable dbc_min_pct equal to the value of tunable
dbc_max_pct.
Impact
The new default values were selected to improve performance in the majority of system
environments, but may not be suitable or optimum for all systems and environments. By
making the tunables dynamic, the values of the tunables can now be modified while
maintaining system availability.
System update scripts take new tunables restrictions into consideration, adjusting the
tunables values to new allowed values if necessary.
Compatibility
System update scripts take new tunables restrictions into consideration, adjusting the
tunables values to new allowed values if necessary.
For the MAXSYMLINKS literal, and the tunables nbuf, bufpages and bufcache_max_pct,
compatibility will be maintained through HP-UX 11i v2, but obsolescence is planned for
the next release. See the following obsolescence section.
Performance
The new default values were selected to improve performance in the majority of system
environments, but may not be suitable or optimum for all systems and environments.
Documentation
The following manpages have changed:
• nfile (5)
• maxfiles (5)
• maxfiles_lim (5)
• nflocks (5)
• dbc_min_pct (5)
• dbc_max_pct (5)
• aio_max_ops_ops (5)
• aio_listio_max (5)
• aio_prio_delta_max (5)
• ninode (5)
• ncdnode (5)
• fs_async (5)
The following manpages are new:
• fs_symlinks (5)
• aio_proc_threads (5)
• aio_monitor_run_sec (5)
• aio_proc_thread_pct (5)