Hi,
I was wondering if anyone had run benchmarks comparing Linux 64-bit performance on both AMD64 and EM64T processors. Thanks...

Check out AnandTech they have quite a few nice benchmark articles compairing various things like 64 bit vs 32 bit linux performance on AMD and Intel and how dual core matches up against dual cpu systems etc. Nice site.

I'd put in a link but dont have enough posts yet hah. just look on the linux tab.

Now I have enough wish I could remember my original username from many years ago lol.

64 bit Linux on Opteron and Xenon

Thanks Lynx_ss. The review is pretty good. Anything more up-to-date though? I know that Opteron support is probably a lot better in 2004 than Xeon 64-bit since Opteron was more mature, but I was wondering how the situation has changed (if it has changed).

I beleive they have other reviews in hardware or cpu that are not completely linux oriented. But Personally I dont things have changed all that much.

I got my first AMD64 in a laptop in early '04 and it was a major hassle to get everything working back then requiring editing make files and config scripts and hand building everything. So support has definately improved 100 fold. Performance, however, has increased enough to be noticable but not a whole lot.

I have 3 AMD64s at home, one is a dual core that isnt quite tuned yet, and a few xenons I've built for work. From what I can tell, the AMD's run almost an order of magnitide faster on memory intensive tasks and graphics. The Intels run a fair bit faster on pure cpu intensive tasks and everywhere else they are about the same. And for some reason the AMDs smoke Intel on MySQL, maybe it has optimized x86-64 or athlon libraries.

Just what I've noticed, I dont have the time to go through benchmarking stuff and cant test the xenons now that they are running critical apps.

Thanks Lynx_ss. The AMD64 support and even the CPU itself is more mature than similar Xeons. The Xeons will probably only excel with tasks where it can make use of it's larger L3 cache. I was just looking for up-to-date Linux benchmarks to back up these claims