NAME
dma32_pool_size — the amount of memory to reserve for the 32-bit DMA pool
VALUES
Default
256MB
Specify an integer value.
DESCRIPTION
This tunable specifies the amount of memory in the first 4GB
of the physical address space to be reserved
for DMA for 32-bit cards. The memory is set aside at boot
time and cannot be used for other purposes. This is required
only on some Itanium platforms. On platforms where the 32-bit pool
is not needed, this value is ignored.
The value of this tunable should be set based on the number
of 32-bit cards in the system and the type of cards.
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
dma32_pool_size
was developed by HP.
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