NAME
chanq_hash_locks — size of hashed pool of spinlocks protecting the channel queue hash tables
VALUES
Allowed values
Any value between
16
and
16777216
that is a power of two.
Recommended values
Default value only.
HP does NOT recommend changing this tunable from the default value.
Consult your HP Field Service engineer before changing this tunable.
DESCRIPTION
This tunable should NOT be changed.
The default value is the best choice for optimal system performance.
This tunable controls the size of a pool of spinlocks (kernel data
structures used for synchronization) that also protect channel queues.
A very small value increases the probability of collisions
in the channel queue hash tables and degrading performance.
Very large values are unnecessary.
Who Is Expected to Change This Tunable?
HP does NOT recommend changing this tunable from the default value.
Consult your HP Field Service engineer before changing this tunable.
Restrictions on Changing
This tunable should be a power of two.
If another value is specified, the largest value (lower than the given
value) that is a power of two is used.
What Are the Side Effects of Raising or Lowering the Value?
The performance of the system could deteriorate.
What Other Tunables Should Be Changed at the Same Time?
None.
WARNINGS
All HP-UX kernel tunable parameters are release specific.
This parameter may be removed or have its meaning changed in
future releases of HP-UX.
Installation of optional kernel software, from HP or other vendors,
may cause changes to tunable parameter values. After installation,
some tunable parameters may no longer be at the default or
recommended values. For information about the effects of
installation on tunable values, consult the documentation
for the kernel software being installed.
For information about optional kernel software that was
factory installed on your system, see
HP-UX Release Notes
at
http://docs.hp.com.
AUTHOR
chanq_hash_locks
was developed by HP.
Printable version
