Sun Nov 25 07:27:25 2001
You know, this is not really a major thing to add, but I'd just like to comment that a close acquaintance of mine is developing his own ISA as a personal project; it has less than 10 instructions, and is bit-agnostic -- it can be extended to address any memory address width as needed, without cruft like PAE. Or at least that's how I understand it. He'd find it easier to explain but he's not a member here and has no desire to become one.
[url]http://arstechnica.infopop.net/OpenTopic/page?a=tpc&s=50009562&f=77909774&m=6190918813[/url]
What the Frick is PAE?????????????
Sun Nov 25 07:40:04 2001
Physical Address Extention used to facilitate addressing more than 4gig or memory.
Sun Nov 25 07:53:11 2001
Physical Address Extention used to facilitate addressing more than 4gig or memory.
That's the general idea. Basically it's an attempt by Intel to cheat their way into the low end of the server market and extend the extremely crappy x86 ISA yet more.
Wouldn't you know it, it works. Mostly because compared to Sun/IBM/HP/Compaq/SGI 64bit RISC architecture servers, Xeons are ridiculously cheap, and can perform very well for their low cost; low for a server that is.
Serious server buyers might need to look elsewhere, though. It's too bad that DF or MWNH don't post here, it would be nice to get their feedback directly.
Ahem...MWNH posted once, I forgot about that. He might not even remember that he has an account -- I think it was back in late February or early March. As far as I'm aware, DF has no account here.
[color=green]This post has been edited.[/color]
(Edited by Imitation Gruel at 11:55 pm on Nov. 24, 2001)
Sun Nov 25 11:16:29 2001
Sun Nov 25 18:44:11 2001
It's too bad that DF or MWNH don't post here,
Except I don't think MWNH knows much about such issues, and I understand that DF referrs to such implementation as a "Hack"
Sun Nov 25 19:27:59 2001
Mon Nov 26 10:42:39 2001
Benchmarks seem to indicated around 3-6% CPU hit just for using the PAE extensions (ie. it applies regardless of whether you are actually accessing memory locations greater then 4GB).
from http://www.spack.org/index.cgi/LinuxRamLimits
Mon Nov 26 18:04:14 2001
understand that DF referrs to such implementation as a "Hack"
He's correct. It's basically bank switching. If you need this kind of space, for God's sake use a 64-bit processor and operating system.
Like Itanium II and Windows.NET 64, for example.
Mon Nov 26 21:25:10 2001
Like Itanium II and Windows.NET 64, for example.
Or a Power4 and AIX :cheesy:
Mon Nov 26 22:30:34 2001
I am looking forward to seeing what Win2K2 Server looks like. though. I'm thinking of going straight from an NT 4 domain to .Net server. (mainly because I'm too lazy to excersize the 2K install CD I have, and I don't feel like tearing the PDC apart just yet...)
Mon Nov 26 22:31:33 2001
from AllYorBaseRBelong2Us posted at 12:44 pm on Nov. 25, 2001Since when has that stopped him from rendering an opinion?
Except I don't think MWNH knows much about such issues