Frederik Schueler wrote: > Bob Proulx wrote: > > Our own benchmarks at work show about a 7%-8% decrease in performance > > when you turn on CONFIG_HIGHMEM64G. This was for a configuration like > > this: xw8000 dual P4 3.06GHz w/ 6GB ram running two 3GB processes. > > Maybe this is related to the missing IOMMU on em64t systems? The Intel Xeon is 32-bit only. I have no benchmarks for the em64t yet. Bob
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