Re: 64-bit vs 32-bit userspace/kernel benchmark? Was: Athlon 64 X2 cpuinfo oddities

[Ken Moffat <zarniwhoop@ntlworld.com>]

On Tue, 10 Jan 2006, Jeffrey Hundstad wrote:

> Has anyone done any actual benchmark tests that show 64-bit vs 32-bit 
> environments/distributions with Athlon64 processors.  If so, I love to see 
> the results.  I too elected to stick with 32-bit, using the same 
> reasoning/guessing above.
 Some months ago, on a 2GHz San Diego (4000+) I ran some tests using 
linuxfromscratch with 2.6.11.11, 1 GB PC3200, ext3, 5 runs of each

(a) specific oggenc and photo manipulations in parallel

64-bit kernel, total time 246.053 to 257.601 sec, avg 250.022, std dev 
4.62415
32-bit kernel, total time 247.572 to 258.963 sec, avg 252.405, std dev 
4.22909
pure64,        total time 172.942 to 177.532 sec, avg 174.582, std dev 
1.90047

 At that time, I hadn't built multilib.

Ken
--
 das eine Mal als Tragödie, das andere Mal als Farce