为什么在嵌套循环中C＃450比C ++慢450？ [英] Why is C# 450% slower than C++ on nested loops ??

问题描述

http://www.tommti-systems.de/go.html...enchmarks.html

上面的链接显示C＃是450像嵌套

循环这样简单的东西要慢一些。这是因为.NET内在速度较慢，还是C＃编译器只是生成代码而不是像C ++编译器那样优化？

http://www.tommti-systems.de/go.html...enchmarks.html
The above link shows that C# is 450% slower on something as simple as a nested
loop. Is this because .NET is inherently slower or does the C# compiler merely
produce code that is not as well optimized as the C++ compiler?

推荐答案

对于那些想了解更多关于为什么这个问题被问到的问题的人，请看以下链接：

http://groups.google.com/group/micro...cc573d00467eec


大量的回复，以及OP对于.NET和CLR的性质的误解了。


-

- Nicholas Paldino [.NET / C＃MVP]

- mv*@spam.guard.caspershouse.com


" Peter Olcott" <醇**** @ att.net>在消息中写道

news：l_Asf.38059

For those that would like more information on why this question is being
asked, see the following link:

http://groups.google.com/group/micro...cc573d00467eec

A good amount of the reply, and the OPs misunderstanding of the nature
of .NET and the CLR is in this thread.

--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

"Peter Olcott" <ol****@att.net> wrote in message
news:l_Asf.38059

QW2.19657@dukeread08 ...

QW2.19657@dukeread08...

http://www.tommti-systems.de/go.html...enchmarks.html
上面的链接显示C＃在简单的事情上慢了450％嵌套循环。这是因为.NET本身速度较慢，还是C＃
编译器只生成不像C ++编译器那样优化的代码？

http://www.tommti-systems.de/go.html...enchmarks.html
The above link shows that C# is 450% slower on something as simple as a
nested loop. Is this because .NET is inherently slower or does the C#
compiler merely produce code that is not as well optimized as the C++
compiler?

" Nicholas Paldino [.NET / C＃MVP]" < mv*@spam.guard.caspershouse.com>写在

消息新闻：em ***************** @ tk2msftngp13.phx.gbl ...

"Nicholas Paldino [.NET/C# MVP]" <mv*@spam.guard.caspershouse.com> wrote in
message news:em*****************@tk2msftngp13.phx.gbl...

对于那些想了解更多关于为什么要问这个问题的信息，请看以下链接：

http://groups.google.com/group/micro...cc573d00467eec

那么看来你的争用（根据链接指向的消息

to）是因为C＃

编译器生成的代码较差所致。

答案量很大，且OP误解了.NET的本质和CLR就在这个主题中。

-
- Nicholas Paldino [.NET / C＃MVP]
- mv*@spam.guard.caspershouse.com

Peter Olcott <醇**** @ att.net>在消息中写道
新闻：l_Asf.38059

For those that would like more information on why this question is being
asked, see the following link:

http://groups.google.com/group/micro...cc573d00467eec
So then it seems that your contention (based on the message that the link points
to) is that the whole difference is because of poorer code generation by the C#
compiler.

A good amount of the reply, and the OPs misunderstanding of the nature of
.NET and the CLR is in this thread.

--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

"Peter Olcott" <ol****@att.net> wrote in message
news:l_Asf.38059

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