HP-UX Reference (11i v3 07/02) - 5 Miscellaneous Topics (vol 9)

numa_policy(5) numa_policy(5)

(Tunable Kernel Parameters)

has been designated as cell-local using parmodify(1M) and the machine has been rebooted.

When Should the Value of This Tunable Be Changed to 2?

The tunable value can be set to 2 if the workload has a low-degree of locality to a cell and it is not possible

to change the source code. The value should be changed to 0 after the memory allocations have been com-

pleted. Changing the value to 2 should be done after sufﬁcient memory has been designated as interleave

using parmodify(1M) and the machine has been rebooted. Note, setting the

numa_policy tunable to 2

only makes sense in a mixed environment in which some applications can beneﬁt from cell-local memory,

and others cannot.

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 parame-

ter 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

numa_policy was developed by HP.