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On my Debian Sid Pentium D 940 w/ 4GB Ram

EPIPHANY 2.30.2

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RESULTS (means and 95% confidence intervals)
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Total: 617.4ms +/- 0.3%
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3d: 89.2ms +/- 0.6%
cube: 21.6ms +/- 3.2%
morph: 45.8ms +/- 2.3%
raytrace: 21.8ms +/- 2.6%

access: 55.6ms +/- 3.7%
binary-trees: 11.8ms +/- 8.8%
fannkuch: 20.4ms +/- 3.3%
nbody: 15.0ms +/- 5.9%
nsieve: 8.4ms +/- 8.1%

bitops: 26.6ms +/- 4.2%
3bit-bits-in-byte: 3.2ms +/- 17.4%
bits-in-byte: 10.0ms +/- 0.0%
bitwise-and: 5.2ms +/- 10.7%
nsieve-bits: 8.2ms +/- 6.8%

controlflow: 4.0ms +/- 0.0%
recursive: 4.0ms +/- 0.0%

crypto: 35.2ms +/- 3.9%
aes: 20.6ms +/- 3.3%
md5: 8.0ms +/- 0.0%
sha1: 6.6ms +/- 10.3%

date: 82.8ms +/- 1.3%
format-tofte: 42.6ms +/- 2.6%
format-xparb: 40.2ms +/- 1.4%

math: 61.6ms +/- 2.3%
cordic: 15.4ms +/- 4.4%
partial-sums: 34.8ms +/- 3.0%
spectral-norm: 11.4ms +/- 6.0%

regexp: 34.8ms +/- 1.6%
dna: 34.8ms +/- 1.6%

string: 227.6ms +/- 0.5%
base64: 26.0ms +/- 3.4%
fasta: 32.0ms +/- 2.7%
tagcloud: 42.2ms +/- 2.5%
unpack-code: 85.8ms +/- 1.9%
validate-input: 41.6ms +/- 1.6%


ICEWEASEL 3.6.4~build2-1

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RESULTS (means and 95% confidence intervals)
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Total: 1587.8ms +/- 1.8%
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3d: 223.8ms +/- 1.2%
cube: 77.0ms +/- 3.6%
morph: 47.4ms +/- 1.4%
raytrace: 99.4ms +/- 0.7%

access: 191.8ms +/- 1.3%
binary-trees: 61.6ms +/- 1.8%
fannkuch: 81.4ms +/- 2.3%
nbody: 32.2ms +/- 1.7%
nsieve: 16.6ms +/- 15.5%

bitops: 44.8ms +/- 5.0%
3bit-bits-in-byte: 1.6ms +/- 42.6%
bits-in-byte: 13.8ms +/- 4.0%
bitwise-and: 2.6ms +/- 26.2%
nsieve-bits: 26.8ms +/- 2.1%

controlflow: 59.4ms +/- 1.9%
recursive: 59.4ms +/- 1.9%

crypto: 80.8ms +/- 5.1%
aes: 47.0ms +/- 9.9%
md5: 21.6ms +/- 3.2%
sha1: 12.2ms +/- 13.3%

date: 260.2ms +/- 1.5%
format-tofte: 163.4ms +/- 2.4%
format-xparb: 96.8ms +/- 1.1%

math: 62.4ms +/- 1.1%
cordic: 27.8ms +/- 2.0%
partial-sums: 25.0ms +/- 0.0%
spectral-norm: 9.6ms +/- 7.1%

regexp: 93.0ms +/- 6.2%
dna: 93.0ms +/- 6.2%

string: 571.6ms +/- 5.0%
base64: 12.2ms +/- 4.6%
fasta: 99.2ms +/- 1.9%
tagcloud: 155.4ms +/- 1.9%
unpack-code: 250.4ms +/- 9.6%
validate-input: 54.4ms +/- 3.8%

I bothered to see how Safari 5 on a Powerbook G4 15" [Powerbook 5/6] and the total was 5168.4ms +/- 0.6%

It's apparent there is not much work on PowerPC optimizations.

I'd like to see what the results are for a PowerMac G5 tower.

G5 is equally abysmal to G4. This is most likely due to the fact that the JavaScript engine is optimized specifically for ARM and x86/x86-64 for JIT, and PowerPC is forced to use the interpreter instead.