HP-UX 11i December 2004 Release Notes

General System Administration and Performance Monitoring
EnhancedMMAP Available on Software Pack
Chapter 9
202
EnhancedMMAP Available on Software Pack
new for December
2004
Now available on the December 2004 Software Pack (SPK) media is EnhancedMMAP,
which was released earlier on the Web via the SPK Web program.
EnhancedMMAP improves the performance of the mmap (2) call with MAP_FIXED or
user-supplied address cases.
An application that performs a large number of mmap/munmaps in an irregular manner
tends to degrade over time. EnhancedMMAP improves the performance of an application
that maps, unmaps, and then remaps the same range of address spaces a large number
of times.
EnhancedMMAP improves the performance of mmap (2) for cases wherein the user
supplies the address expected in the mmap (2) call. In other words, this feature’s
performance improvements will only be seen when the first argument to the mmap (2) is
non-null.
Documentation
For further information, see the product-specific documentation available in the DOCS
directory on the Software Pack media.
For more information about Software Pack and how you can obtain EnhancedMMAP, see
“Software Pack (Optional HP-UX 11i v1 Core Enhancements)” on page 62.