blocks|key|4229596|text|据我所知，最好的比较是The+Computer+Language+Benchmarks+Game。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4229597|它比较了(目前)大量编程语言的10个基准测试的速度、内存使用和源代码大小。基准的实现是由用户提交的，而且还在不断改进，因此排名有所变化。|4229598|目前比较的是openjdk和C#+.NET核心。|4229599|Currently+it+is+close,+but+.NET+Core+is+slightly+faster+on+most+benchmarks。|4229600|entityMap|0|LINK|mutability|MUTABLE|url|https://benchmarksgame-team.pages.debian.net/benchmarksgame/|1|https://benchmarksgame-team.pages.debian.net/benchmarksgame/fastest/java-csharpcore.html^0|B|11|0|0|0|0|0|22|1|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]]|C|$]]|$1|D|3|E|5|6|7|X|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|Y|8|@]|9|@]|C|$]]|$1|H|3|I|5|6|7|Z|8|@]|9|@$A|10|B|11|1|12]]|C|$]]|$1|J|3|-4|5|6|7|13|8|@]|9|@]|C|$]]]|K|$L|$5|M|N|O|C|$P|Q]]|R|$5|M|N|O|C|$P|S]]]]

The best comparison that I am aware of is <a href="https://benchmarksgame-team.pages.debian.net/benchmarksgame/" rel="nofollow noreferrer">The Computer Language Benchmarks Game</a>.

It compares speed, memory use and source code size for (currently) 10 benchmarks across a large number of programming languages. The implementations of the benchmarks are user-submitted and there are continuous improvements, so the standings shift around somewhat.

The comparison is currently openjdk vs C# .NET Core.

<a href="https://benchmarksgame-team.pages.debian.net/benchmarksgame/fastest/java-csharpcore.html" rel="nofollow noreferrer">Currently it is close, but .NET Core is slightly faster on most benchmarks</a>.

blocks|key|4229695|text|这是一个关于这个主题的nice+recent+study：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4229696|4229697|在C、C#和Java中的数值性能|blockquote|4229698|4229699|彼得·塞斯托夫特(sestoft@itu.dk)|4229700|丹麦哥本哈根IT大学|4229701|版本0.9.1+of+2010-02-19|4229702|摘要:我们比较了C，C#和Java在三种小情况下的数值性能。|4229703|...|4229704|entityMap|0|LINK|mutability|MUTABLE|url|http://www.itu.dk/%257Esestoft/papers/numericperformance.pdf^0|B|H|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@$A|11|B|12|1|13]]|C|$]]|$1|D|3|-4|5|6|7|14|8|@]|9|@]|C|$]]|$1|E|3|F|5|G|7|15|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|16|8|@]|9|@]|C|$]]|$1|I|3|J|5|6|7|17|8|@]|9|@]|C|$]]|$1|K|3|L|5|6|7|18|8|@]|9|@]|C|$]]|$1|M|3|N|5|6|7|19|8|@]|9|@]|C|$]]|$1|O|3|P|5|6|7|1A|8|@]|9|@]|C|$]]|$1|Q|3|R|5|6|7|1B|8|@]|9|@]|C|$]]|$1|S|3|-4|5|6|7|1C|8|@]|9|@]|C|$]]]|T|$U|$5|V|W|X|C|$Y|Z]]]]

Here's a <a href="http://www.itu.dk/%7Esestoft/papers/numericperformance.pdf" rel="noreferrer">nice recent study</a> on the subject:
<blockquote>
Numeric performance in C, C# and Java
Peter Sestoft (sestoft@itu.dk)
IT University of Copenhagen Denmark
Version 0.9.1 of 2010-02-19
Abstract:We compare the numeric performance of
C, C# and Java on three small cases.
...
</blockquote>

blocks|key|1369255|text|这两种语言在性能方面都在不断发展。至少在2013年，微软自己的Joe+Duffy+blogged|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1369256|1369257|+Java在性能上比C#更接近C%2B%2B，这要归功于在类似热点的虚拟机中出色的工作，这些虚拟机使用了代码间距和堆栈分配。|blockquote|1369258|1369259|entityMap|0|LINK|mutability|MUTABLE|url|http://joeduffyblog.com/2013/12/27/csharp-for-systems-programming/^0|15|7|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|-4|5|6|7|U|8|@]|9|@]|C|$]]|$1|E|3|F|5|G|7|V|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|W|8|@]|9|@]|C|$]]|$1|I|3|-4|5|6|7|X|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

Both languages are evolving in terms of performance. At least in 2013, Microsoft's own Joe Duffy <a href="http://joeduffyblog.com/2013/12/27/csharp-for-systems-programming/" rel="noreferrer">blogged</a>:

<blockquote>
 Java is closer [to C++ in performance] than C# thanks to the excellent work in HotSpot-like VMs which employ code pitching and stack allocation.
</blockquote>

blocks|key|4229651|text|这可能会招致火焰之战，不过，这是我的意见...|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4229652|首先，如果你的网站运行太慢，你需要更好的硬件。或更多硬件，并为您的站点添加负载平衡。如果你是Google，你最终会得到拥有数千台机器的巨大服务器场，即使站点本身是用一些过时的语言开发的，这些服务器群似乎也能提供闪电般的性能。|4229653|大多数语言都进行了优化，以充分利用其硬件，并将在此特定环境中通过特定设置胜过任何其他语言。比较语言没有多大意义，因为有数以千计的技术可以进一步优化它们。此外，您如何开始衡量性能？|4229654|让我们看一下执行速度。语言X执行某些任务的速度可能比语言Y快2倍。然而，语言Y对于运行多个线程进行了更优化，并且在相同的时间内可以为比语言X多10倍的用户提供服务。在客户机/服务器环境中，将this和Y结合起来会快得多。|4229655|但是，然后将X安装在一个优化的系统上，它的操作系统是X非常喜欢的，加上额外的硬件，无数字节的内存和磁盘空间，以及十几个CPU，X将再次击败Y。|4229656|那么，了解语言的执行速度有什么价值呢？甚至是语言的比较？我们如何知道创建报告的人是不是有偏见？我们如何确定他们对每种语言都使用了最优的设置？他们有没有写出最优的测试代码？无论如何，你如何比较最终的结果？每个用户的执行时间？还是总执行时间？|4229657|回到X和Y两种语言。X在2秒内运行一个任务，但它同时只支持10个线程，即10个用户。Y需要6秒，但同时为50个线程提供服务。X会使每个用户的速度更快。在两秒钟内，X已经处理了10个用户。在6秒内，X已经处理了30个用户。但到那时，Y已经处理了50个用户。因此，当你拥有大量用户时，Y的表现将优于X，而当用户数量较少时，X的表现将优于Y。(或线程。)看到有报道提到这一点会很有趣，对吧？|4229658|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|S|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|T|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|U|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|V|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|O|$]]

This could invite a flamewar, but hey, it's my opinion... First of all, if your site runs too slow, you'll need better hardware. Or more hardware and add load balancing to your site. If you're Google, you'll end up with huge server farms with thousands of machines that will seem to provide a lightning-fast performance, even if the sites themselves are developed in some outdated language. Most languages have been optimized to get the best from their hardware and will outperform any other language in this specific environment with a specific setup. Comparing languages won't make much sense because there are thousands of techniques to optimize them even more. Besides, how do you measure performance to begin with? 
Let's say that you look at execution speed. Language X might perform some task 2 times faster than language Y. However, language Y is more optimized for running multiple threads and could serve 10 times more users than language X in the same amount of time. Combine this and Y would be much faster in a client/server environment. But then install X on an optimized system with an operating system that X likes a lot, with additional hardware, a gadzillion bytes of memory and disk space and a dozen or so CPU's and X will beat Y again. So, what's the value of knowing the execution speed of languages? Or even the comparison of languages? How do we know that the ones who created the report weren't biased? How are we sure that they used the most optimal settings for every language? Did they even write the most optimal code to be tested? And how do you compare the end results anyways? Execution time per user? Or total execution time? 
Back to languages X and Y. X runs a task in 2 seconds but it supports only 10 threads at the same time, thus 10 users. Y needs 6 seconds but serves up to 50 threads at the same time. X would be faster per user. In two seconds, X has processed 10 users. In 6 seconds, X has processed 30 users. But Y would have processed 50 users by that time. Thus Y would outperform X when you have lots of users, while X would out-perform Y with a low amount of users. (Or threads.) It would be interesting to see reports mentioning this, right?

blocks|key|1370908|text|2021|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|1370909|概述|1370910|多年来，无论是使用Java还是在.NET/C#上创建的应用程序都具有类似级别的性能。然而，微软和许多第三方贡献者已经在这方面的优化方面进行了一些重要的投资，并继续改进。例如，ASP.NET核心web框架允许您在一台服务器上每秒处理700万个请求。根据TechEmpower的测试，ASP.NET核心远远领先于任何Java+web框架。|1370911|研究|1370912|https://github.com/ixy-languages/ixy-languages|1370913|这是可以在.NET平台上实现的性能的另一个很好的演示-一个用不同语言编写的超快网络驱动程序的示例。用C#编写的驱动程序显示出与C和Rust几乎相同的性能水平，略好于Go语言，并远远领先于所有其他高级语言，包括Java。|1370914|Source|1370915|entityMap|0|LINK|mutability|MUTABLE|url|1|https://korzh.com/blog/dotnet-vs-java-what-development-platform-better^0|0|4|0|0|2|0|0|0|2|0|0|1A|0|0|0|0|6|1|0^^$0|@$1|2|3|4|5|6|7|10|8|@$9|11|A|12|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|13|8|@$9|14|A|15|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|16|8|@]|D|@]|E|$]]|$1|J|3|K|5|6|7|17|8|@$9|18|A|19|B|C]]|D|@]|E|$]]|$1|L|3|M|5|6|7|1A|8|@]|D|@$9|1B|A|1C|1|1D]]|E|$]]|$1|N|3|O|5|6|7|1E|8|@]|D|@]|E|$]]|$1|P|3|Q|5|6|7|1F|8|@]|D|@$9|1G|A|1H|1|1I]]|E|$]]|$1|R|3|-4|5|6|7|1J|8|@]|D|@]|E|$]]]|S|$T|$5|U|V|W|E|$X|M]]|Y|$5|U|V|W|E|$X|Z]]]]

2021
Overview
For years, the applications created either with Java or on .NET/C# had a similar level of performance. However, Microsoft and many third-party contributors have made some significant investments in the optimization of this aspect and continue to improve. For example, the ASP.NET Core web framework allows you to serve 7 million requests per second on a single server. And according to TechEmpower tests, ASP.NET Core is way ahead of any Java web framework.
Research
<a href="https://github.com/ixy-languages/ixy-languages" rel="nofollow noreferrer">https://github.com/ixy-languages/ixy-languages</a>
Here's another good demonstration of the performance that can be achieved on the .NET platform — an example of a super-fast network driver written in different languages. The driver written in C# shows almost the same level of performance as C and Rust, slightly better than the Go language, and way ahead of all other high-level languages, including Java.
<a href="https://korzh.com/blog/dotnet-vs-java-what-development-platform-better" rel="nofollow noreferrer">Source</a>

Taking out all of the obvious caveats related to benchmarks and benchmark comparison, is there any study (an array of well documented and unbiased tests) that compares the average execution speed of the two mentioned languages?
Thanks

Java vs C#: Are there any studies that compare their execution speed?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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剔除所有与基准测试和基准比较相关的明显警告，是否有任何研究(一系列有良好文档和无偏见的测试)比较了上述两种语言的平均执行速度？谢谢

问Java与C#：有没有比较它们执行速度的研究？
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