03.08.2011 18:20, bearophile:
The benchmark info:
http://chadaustin.me/2011/01/digging-into-javascript-performance/
The code, in C++, JS, Java, C#:
https://github.com/chadaustin/Web-Benchmarks/
The C++/JS/Java code runs on a single core.
D2 version translated from the C# version (the C++ version uses struct
inheritance!):
http://ideone.com/kf1tz
Bye,
bearophile
Compilers:
C++: cl /O2 /Oi /Ot /Oy /GT /GL and link /STACK:10240000
Java: Oracle Java 1.6 with hm... Oracle default settings
C#: Csc /optimize+
D2: dmd -O -noboundscheck -inline -release
Type column: working scalar type
Other columns: vertices per second (inaccuracy is about 1%) by language
(tests from bearophile's message, C++ test is "skinning_test_no_simd.cpp").
System: Windows XP, Core 2 Duo E6850
-----------------------------------------------------------
Type | C++ | Java | C# | D2
-----------------------------------------------------------
float | 31_400_000 | 17_000_000 | 14_700_000 | 168_000
double | 32_300_000 | 16_000_000 | 14_100_000 | 166_000
real | 32_300_000 | no real | no real | 203_000
int | 29_100_000 | 14_600_000 | 14_100_000 | 16_500_000
long | 29_100_000 | 6_600_000 | 4_400_000 | 5_800_000
-----------------------------------------------------------
JavaScript vs C++ speed is at the first link of original bearophile's
post and JS is about 10-20 temes slower than C++.
Looks like a spiteful joke... In other words: WTF?! JavaScript is about
10 times faster than D in floating point calculations!? Please, tell me
that I'm mistaken.
