The Virtual Memory kernel tunable physical_io_buffers is used to size a shared buffer pool for physical I/O
operations in the kernel.
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 | TIP: To find information about other obsoleted kernel tunables
listed in this document, perform a search on the word “tunable”. |
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Summary
of Change |
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What’s
New for Customers Migrating from HP-UX 11i v1 September 2005?
The Virtual Memory kernel tunable physical_io_buffers did not previously exist in any version of HP-UX 11i
v1 and now will also not exist in HP-UX 11i v3.
What’s
New for Customers Migrating from HP-UX 11i v2 June 2006?
The Virtual Memory kernel tunable physical_io_buffers is now obsolete. This tunable was used in HP-UX 11i
versions 1.6 and 2 to size a shared buffer pool for physical I/O operations
in the kernel. As of HP-UX 11i version 3 and later, the kernel automatically manages
the pool size. The physical_io_buffers tunable is no longer needed.
Impact |
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The Virtual Memory kernel tunable is no longer available to
you. The functionality controlled by this tunable is now handled
automatically by the kernel.
Compatibility |
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HP-UX kernel tunables may be obsoleted or have their meaning
changed in any release. No compatibility issues are expected from
this change.
Performance |
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This change should provide similar performance to all settings
of the tunable without requiring you to manually calculate optimum
values.
Obsolescence |
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The physical_io_buffers tunable has been obsoleted.
Printable version
