[转载]Performance comparison C++, C# and Java - C# 论坛

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[转载]Performance comparison C++, C# and Java

Performance comparison C++, C# and Java
(性能比較c++,c#,和java)

Test System

AMD Athlon XP 2200+
1024 MB DDR 266
VIA KT266A
Windows XP Prof. + SP1

Java Version + Options

Java 1.4.2_03
Java 1.5 (alpha, 11. Dec. 03)
compiler options: -g:none
running options: -mx1024m

C# Version + Options

.Net Framework 1.1.4322 (Microsoft (R) Visual C# .NET Compiler version 7.10.3052.4)

compiler options: /optimize+ /debug- /checked-
running options:

C++ Version + Options

Microsoft Visual Studio Net 2003 (Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 13.10.3077 for 80x86)

compiler options: /O2 /Oi /Og /Ot /EHsc /arch:SSE

Intel(R) C++ Compiler for 32-bit applications, Version 8.0 Build 20031017Z

compiler options: /fast /G6 /Oi /Og /Ot /EHsc /arch:SSE

running options:

Source Code

Original Source Code is from Christopher W. Cowell-Shah http://www.cowell-shah.com/research/benchmark/code and from http://dada.perl.it/shootout/ and Doug Bagley http://www.bagley.org/~doug/shootout . I took portions and whole parts from both and put them into a single file and did some changes + bugfixes.

Java
C#
C++

Results

Maximum memory usage:

Java - 163 MB
C# - 111 MB
Cpp - 98 MB

Performance in ms:

Cpp is the fastest, except the STL "hashmaps" test is a lot slower, maybe someone can take a look at the source code, I use STL , because was slower.... The memory footprint of Cpp is also the lowest, which was expected. C# is quit fast (I would have been surprised, if C# were much slower than Java), but seems to have some problems with exception handling, matrix multiply and nested loops. Java's hash maps are very fast and the exception handling is also very strong. If you sum it up, Java gets 5 wins against C#, C# gets 9 wins against Java and Cpp gets 11 wins against C#. This black and white comparison only takes performance into account, but other values like development speed and security are also very important issues today. In my opinion it goes much faster to develop complex apps with Java or C#, than with plain Cpp and the STL. Type safety and buffer overrun issues are also much weaker in Cpp, so you have to do more work, which takes more time and will cost some speed! So every language has its strong areas, but as always, nothing comes for free...

轉自;tommti-systems

[此贴子已经被作者于2006-7-20 17:59:48编辑过]