NAME
dbc_max_pct — the maximum percentage of memory to be used by dynamic buffer cache
VALUES
Default
50
Specify an integer value.
DESCRIPTION
When the parameters
bufpages
and
nbuf
are both set to their default value of 0,
the size of the buffer cache grows or shrinks dynamically,
depending on competing requests for system memory.
The value of
dbc_max_pct
sets the maximum percentage of physical memory
that can be allocated to the dynamic buffer cache.
It is possible to set both
dbc_max_pct
and
dbc_min_pct
to the same value, 12 for example, and create a kernel
that uses exactly that percentage of physical memory for the buffer cache,
regardless of the size of physical memory.
Related Parameters
dbc_max_pct
must be greater than or equal to
dbc_min_pct.
To use dynamic buffer caching,
bufpages
and
nbuf
must both be set to zero.
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
dbc_max_pct
was developed by HP.
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