On Sat, 2005-06-25 at 12:49, Peter Arremann wrote:
Some real-world benchmark numbers would make the case more convincing. Does anyone have some? I'm particularly interested in anything with AMD vs. IBM's 64-bit xeon boxes.
The talk we had wasn't really about 64bit...
There are a few benchmarks out there comparing the two - but none I've seen actually test 64bit linux tuned for Opteron/Xeon (instead of the stock RHEL kernels, see below) with large memory (>4GB) running heavy IO. That's where you'd see the biggest issue with intels implementation because of the lack of IOMMU.
Most of the situations where I would use them involve some disk update activity but much more reading, so what really interests me is how well a huge amount of memory works as a disk buffer to avoid doing heavy physical I/O.