Hardware experiences?

Lennart Sorensen lsorense-1wCw9BSqJbv44Nm34jS7GywD8/FfD2ys at public.gmane.org
Mon Sep 11 13:42:18 UTC 2006


On Sun, Sep 10, 2006 at 10:21:49AM +0100, Jamon Camisso wrote:
> http://www.linuxhardware.org/article.pl?sid=05/02/24/1747228 is the best 
> of the three (read most favourable to 64 bit :)
> 
> http://www.osnews.com/story.php?news_id=5768 for a SPARC based 
> comparison, most compelling benchmark to stay with 32bit (on SPARC anyways)

The sparc was never designed to become faster in 64bit mode.  It just
added a 64bit mode to gain address range for the few programs that need
it.  Everything else is intended to stay 32bit on sparc on most systems.
Why waste the extra bytes on pointers if you gain nothing in
performance.

> http://www.pcstats.com/articleview.cfm?articleid=1665&page=9 for a 
> windows based 32 vs 64bit comparison, again, 64 is favoured.

x86 processors (at least from AMD, and I think in the case of the Core
2) do gain performance in 64bit mode (extra registers and less legacy
baggage helps a lot on x86).

> http://www.anandtech.com/IT/showdoc.aspx?i=2447&p=5 some database 
> benchmarks, opteron and xeon, 32 and 64bit comparisons (gentoo users 
> take note of the "standard tuned Gentoo installation")

--
Len Sorensen
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