POWER7 based machines introduces the Active Memory Expansion (AME) which makes the memory of an AIX 6 Logical Partition (LPAR) seem larger than is actually is by compression memory pages on the fly. This movie covers the basics of how it works, how to switch it on at the LPAR level, running the "amepat" tool to predetermine good AME settings and its effect and then how to monitor it while its running.
ANZ AIX User Group
From archive: February 2010 X
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#IBM announces #POWER7 redefines the benchmarks against which performance is measured