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nflocks(5)

Tunable Kernel Parameters
HP-UX 11i Version 1.6: June 2002
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NAME

nflocks — the maximum combined total number of file locks that are available system-wide to all processes at any given time

VALUES

Minimum

2

Maximum

Memory limited

Default

200

Specify an integer value or use an integer formula expression.

DESCRIPTION

nflocks gives the maximum number of file/record locks that are available system-wide. When choosing this number, note that one file may have several locks, and databases that use lockf() may need an exceptionally large number of locks.

Open and locked files consume memory and other system resources. These resources must be balanced against other system needs to maintain optimum overall system performance. Achieving an optimum balance can be quite complex, especially on large systems, because of wide variation in the kinds of applications being used on each system and the number and types of applications that might be running simultaneously, the number of local and/or remote users on the system, and many other factors.

RELATED PARAMETERS

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.

AUTHOR

nflocks was developed by HP.

SEE ALSO

lockf(2).

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