-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 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) Was I helpful? Let others know: http://svcs.affero.net/rm.php?r=jkeating -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQFBPcwv4v2HLvE71NURAmV9AKCRZGO/ZwfqEgoI3tt7K1UOWV9lDgCfTENZ R+iKfPkNJ99QQLxVNmvR3P0= =/zQO -----END PGP SIGNATURE-----
