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On Monday 06 September 2004 10:47, Alan Cox wrote:
em64t as Intel currently call it is pretty close to the x86-64
architecture so its not too bad a clone. It lacks prefetch/prefetchw
which can also be used by some fancy user space stuff like image
processors. It also lacks a hardware IOMMU so you may have
performance problems going above about 3.5Gb of RAM depending on your
other hardware.
I know they are similar, and em64t lacks some things that AMD64 has,
however we have lots of customers that refuse to run anything but
Intel, and they want to run Naconas. I'm just making sure that the
performance hit they get against Opteron isn't due to misconfigured
software. If what Arjan says is true, and it's a runtime detection
thing and I don't have to build a complete kernel optimized for em64t
than that is cool. Thanks.
- --
Jesse Keating RHCE (
http://geek.j2solutions.net)
Fedora Legacy Team (
http://www.fedoralegacy.org)
GPG Public Key
(
http://geek.j2solutions.net/jkeating.j2solutions.pub)
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