Hello. I am currently tasked with figuring out what kind of JavaScript
performance we can expect out of Qt 5.0.1. I have created a trivial
application to construct a QWebView and run tests in it. Using this program
and running the SunSpider benchmark, I get the following results (Qt 4.8.4, Qt
5.0.1 and Chrome shown for comparison, on Windows 7 64-bit).
Can someone tell me whether these are the kind of results I should expect, or
am I doing something wrong? I am disappointed that Qt 5.0.1 is only slightly
faster than Qt 4.8.4, and a full 7x slower than Chrome. I expected the V8
engine to improve this considerably.
Thanks,
Stan Pensak
Qt 4.8.4:
============================================
RESULTS (means and 95% confidence intervals)
--------------------------------------------
Total: 1429.4ms +/- 2.3%
--------------------------------------------
3d: 184.6ms +/- 3.3%
cube: 57.2ms +/- 7.9%
morph: 64.9ms +/- 4.6%
raytrace: 62.5ms +/- 2.0%
access: 266.2ms +/- 2.3%
binary-trees: 21.6ms +/- 8.7%
fannkuch: 151.9ms +/- 1.7%
nbody: 64.6ms +/- 4.8%
nsieve: 28.1ms +/- 8.4%
bitops: 167.8ms +/- 8.0%
3bit-bits-in-byte: 37.7ms +/- 4.4%
bits-in-byte: 41.5ms +/- 7.6%
bitwise-and: 28.9ms +/- 8.8%
nsieve-bits: 59.7ms +/- 11.4%
controlflow: 26.1ms +/- 10.0%
recursive: 26.1ms +/- 10.0%
crypto: 110.9ms +/- 6.3%
aes: 49.6ms +/- 10.8%
md5: 31.2ms +/- 11.3%
sha1: 30.1ms +/- 4.4%
date: 62.0ms +/- 5.1%
format-tofte: 35.2ms +/- 7.6%
format-xparb: 26.8ms +/- 2.8%
math: 173.1ms +/- 1.7%
cordic: 70.9ms +/- 2.7%
partial-sums: 53.5ms +/- 3.5%
spectral-norm: 48.7ms +/- 2.2%
regexp: 202.0ms +/- 6.7%
dna: 202.0ms +/- 6.7%
string: 236.7ms +/- 6.8%
base64: 38.7ms +/- 7.4%
fasta: 45.3ms +/- 5.5%
tagcloud: 49.9ms +/- 5.8%
unpack-code: 61.0ms +/- 5.4%
validate-input: 41.8ms +/- 27.7%
Qt 5.0.1:
============================================
RESULTS (means and 95% confidence intervals)
--------------------------------------------
Total: 1340.5ms +/- 0.4%
--------------------------------------------
3d: 133.5ms +/- 0.5%
cube: 35.4ms +/- 1.0%
morph: 46.8ms +/- 1.0%
raytrace: 51.3ms +/- 0.7%
access: 175.1ms +/- 1.4%
binary-trees: 18.2ms +/- 1.7%
fannkuch: 96.4ms +/- 0.9%
nbody: 37.8ms +/- 6.8%
nsieve: 22.7ms +/- 1.5%
bitops: 233.1ms +/- 0.3%
3bit-bits-in-byte: 30.2ms +/- 1.5%
bits-in-byte: 51.0ms +/- 1.5%
bitwise-and: 93.2ms +/- 0.8%
nsieve-bits: 58.7ms +/- 1.4%
controlflow: 27.1ms +/- 1.9%
recursive: 27.1ms +/- 1.9%
crypto: 94.0ms +/- 4.9%
aes: 38.6ms +/- 11.7%
md5: 28.2ms +/- 1.6%
sha1: 27.2ms +/- 1.1%
date: 68.8ms +/- 2.7%
format-tofte: 34.2ms +/- 1.3%
format-xparb: 34.6ms +/- 5.4%
math: 151.7ms +/- 0.5%
cordic: 60.8ms +/- 1.1%
partial-sums: 54.8ms +/- 1.2%
spectral-norm: 36.1ms +/- 1.5%
regexp: 231.9ms +/- 0.9%
dna: 231.9ms +/- 0.9%
string: 225.3ms +/- 1.5%
base64: 37.3ms +/- 1.3%
fasta: 43.0ms +/- 0.8%
tagcloud: 48.7ms +/- 5.4%
unpack-code: 61.0ms +/- 1.0%
validate-input: 35.3ms +/- 1.9%
Chrome 24.0.1312.57 m:
============================================
RESULTS (means and 95% confidence intervals)
--------------------------------------------
Total: 182.4ms +/- 2.8%
--------------------------------------------
3d: 28.6ms +/- 3.6%
cube: 8.7ms +/- 5.5%
morph: 9.0ms +/- 3.7%
raytrace: 10.9ms +/- 3.7%
access: 16.9ms +/- 3.7%
binary-trees: 1.1ms +/- 20.5%
fannkuch: 8.2ms +/- 3.7%
nbody: 4.9ms +/- 4.6%
nsieve: 2.7ms +/- 12.8%
bitops: 12.3ms +/- 5.5%
3bit-bits-in-byte: 0.6ms +/- 61.5%
bits-in-byte: 3.9ms +/- 5.8%
bitwise-and: 3.0ms +/- 0.0%
nsieve-bits: 4.8ms +/- 6.3%
controlflow: 2.0ms +/- 0.0%
recursive: 2.0ms +/- 0.0%
crypto: 16.9ms +/- 3.7%
aes: 6.0ms +/- 0.0%
md5: 5.5ms +/- 6.8%
sha1: 5.4ms +/- 6.8%
date: 18.1ms +/- 3.9%
format-tofte: 8.5ms +/- 5.9%
format-xparb: 9.6ms +/- 5.2%
math: 15.5ms +/- 4.5%
cordic: 2.6ms +/- 14.2%
partial-sums: 9.9ms +/- 4.1%
spectral-norm: 3.0ms +/- 0.0%
regexp: 8.4ms +/- 4.4%
dna: 8.4ms +/- 4.4%
string: 63.7ms +/- 3.9%
base64: 4.3ms +/- 8.0%
fasta: 7.3ms +/- 4.7%
tagcloud: 19.9ms +/- 8.0%
unpack-code: 22.7ms +/- 3.0%
validate-input: 9.5ms +/- 15.6%
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