Coming in on the heels of everyone else's compiling woes and optimized 
builds, I just got around to doing my own, and thought I'd post my results.  
I don't have the official linux build or the windows build installed to do 
comparisons with, but I did a default build and an optimized build, and 
have results for each on my system:

povray.unopt +a0.3 +w320 +h240 +v +D +ibenchmark.pov
Time For Parse:    0 hours  0 minutes   6.0 seconds (6 seconds)
Time For Photon:   0 hours  3 minutes   2.0 seconds (182 seconds)
Time For Trace:    1 hours  4 minutes  41.0 seconds (3881 seconds)
    Total Time:    1 hours  7 minutes  49.0 seconds (4069 seconds)

povray +a0.3 +w320 +h240 +v +D +ibenchmark.pov
Time For Parse:    0 hours  0 minutes   4.0 seconds (4 seconds)
Time For Photon:   0 hours  1 minutes  30.0 seconds (90 seconds)
Time For Trace:    0 hours 34 minutes  54.0 seconds (2094 seconds)
    Total Time:    0 hours 36 minutes  28.0 seconds (2188 seconds)

Quite a significant improvement!  OK, so this sucks compared to you Athlon 
XP 1900 people, but I'm quite happy with it on my Athlon tbird 1.1 GHz.  
Some notes on the build:
- Hadn't read the thread on the min/max problem, so I ended up changing all 
calls to min/max to fmin/fmax, and calls to min3/max3 to 
fmin(fmin(),)/fmax(fmax(),).
- Configured as follows based on random suggestions scattered across usenet: 
CXX='/usr/local/gcc-3.1.1/bin/g++ -O3 -march=athlon-tbird 
-mcpu=athlon-tbird -fomit-frame-pointer -falign-functions=6 -funroll-loops 
-ffast-math -malign-double -m3dnow -mmmx' LDFLAGS='-static' ./configure

Note that I linked this as a static binary so if anyone else wants to give 
it a try, I can put it up for download - just let me know.

Ken

Oh, for reference:

$ cat /proc/cpuinfo
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 6
model           : 4
model name      : AMD Athlon(tm) Processor
stepping        : 2
cpu MHz         : 1109.921
cache size      : 256 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov 
pat pse36 mmx fxsr syscall mmxext 3dnowext 3dnow
bogomips        : 2215.11

$ cat /proc/meminfo
        total:    used:    free:  shared: buffers:  cached:
Mem:  261648384 247451648 14196736  1597440 33746944 153714688
Swap: 388575232 92811264 295763968
MemTotal:       255516 kB
MemFree:         13864 kB
MemShared:        1560 kB
Buffers:         32956 kB
Cached:         132836 kB
SwapCached:      17276 kB
Active:         110336 kB
Inact_dirty:     70904 kB
Inact_clean:      3388 kB
Inact_target:        4 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:       255516 kB
LowFree:         13864 kB
SwapTotal:      379468 kB
SwapFree:       288832 kB
NrSwapPages:     72208 pages

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