The POWER4™ processor in the IBM pSeries™ 690 system supports two virtual page sizes. It supports the traditional POWER architecture 4KB page size. It also supports a new 16MB page size. AIX 5L™ for POWER Version 5.1 with the 5100-02 Recommended Maintenance package contains support for 16MB size 'large' pages. This document describes AIX operating system support for large pages. It describes how customers may configure a POWER4 system to use large pages and how applications request large pages to back their virtual storage requirements.
AIX Support for Large Page