The Phenom / PhenomII memory controller: ganged vs unganged mode benchmarked

Details: Written by: Gionatan Danti; Category: Hardware analysis; Created: 17 June 2010

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Real world tests: Apache + PHP + Joomla test

In this test, we use the popular Apache + PHP + Joomla stack to evaluate server performances on more complex web workloads. First, let's see the four threads results:

Apache + Joomla benchmark - four concurrent client threads

The unganged mode here has a <2% advantage, so I consider this test a tie. Can the 256 thread test modify the standings?

Apache + Joomla benchmark - 256 concurrent client threads

Yes, it can: now the ganged mode is about 10% faster than unganged! It seems that PHP and Joomla, in this specific case, prefer the ganged mode vs the unganged one.