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Chapter 5
For decreasing the physical memory access latency, SMP is far more suit-
able than NUMA, with the exception of AMD Opteron’s multiprocessing
implementation that enable core CPU speed access. In benchmarks done
with Exchange 2003, this was reflecting, showing that a dual-core Opteron
server is faster than a quad-processor SMP server.
A final way to improve your memory speed is to prevent general RAM
access by using larger on-die or close-by secondary processor cache (i.e., L1,
L2, and L3 caches).
5.2.3 Co-Hosting Scenarios
Don’t forget that you should reconsider your server configuration approach
if you ...