blocks|key|3635558|text|JVM的性能因平台而异。自从我在各种平台上评估jvm性能以来已经有一段时间了，但是当我几年前在JDK1.4上评估jvm性能时，solaris是最好的。那时候，linux中的JVM仍然是新的，并且存在线程支持问题。在JVM实现中，情况发生了很大变化。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3635559|当然，要判断这一点并不容易，您必须选择理想的硬件平台，在同一台机器上安装Soaris、Linux等，并运行一些测试来对其进行评估。支持目标CPU的JIT实现也会产生影响。|3635560|查看每个平台支持的各种扩展JVM选项，您将对您可以完成多少优化工作有一个合理的了解。|3635561|还可以考虑其他JVM，如JRockit或IBM。|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|J|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|K|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|L|8|@]|9|@]|A|$]]]|H|$]]

JVM Performance does vary from platform to platform. Its has been a while since I evaluate jvm performance on various platforms, but when I last did few years ago, on JDK1.4, solaris was best. That time JVM in linux was still new and there were threading support issues. Things have changed a lot in JVM implementations.

Ofcourse there is no easy way to judge this, you have to choose ideal hardware platform and install Soaris, Linux etc on same machine and run some tests to evaluate it. JIT Implementation to support target CPU will also makes a difference.

Look into various extended JVM options supported by each platform, you will get a fair idea on how much optimization you may be able to do.

Also consider other JVMs such as JRockit or IBM JVM.

blocks|key|5634216|text|通过切换您正在使用的操作系统，您将发现很少(如果有的话)改进，除非您现在正在运行一些非常旧的版本，而且即使这样，它也可能不会给您带来您想要的性能增益。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5634217|我的猜测是，您仍然受到当前正在运行的硬件的限制，或者您的Java应用程序可能是主要问题，在投入更多硬件解决问题之前可能值得研究。|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|E|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|F|8|@]|9|@]|A|$]]]|D|$]]

You will find very little(if any) improvement by switching the OS you are using, unless you're running some really old version right now, and even then it might not get you the performance gain you're looking for.

My guess is you're still limited by the hardware you're currently running, or perhaps your Java application is the main issue, and might be worth looking into before throwing more hardware at the problem.

blocks|key|5634357|text|令人惊讶的是，Windows是Java最快的平台，因为它是开发人员的原生平台，Solaris的结果是最糟糕的。在Linux上，为了方便起见，您可以从Sun、IBM、OpenJDK和BEA中进行选择。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5634358|真正的答案是什么将是最简单和成本效益高的管理平台，可能是CentOS或Ubuntu。|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|E|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|F|8|@]|9|@]|A|$]]]|D|$]]

Surprisingly Windows is the fastest platform for Java as it is the developers native platform, Solaris ending up on the worst side. On Linux you get to choose from Sun, IBM, OpenJDK, and BEA for your convenience.

The real answer is what is going to be the easiest and cost effective platform to manage, which is probably CentOS or Ubuntu Server.

blocks|key|3635401|text|不同的发行版之间几乎没有执行Java应用程序的能力。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3635402|然而。您应该选择支持现代硬件和芯片组的操作系统(即一个相对较新的内核)和一个稳定的发布计划。CentOS很好，5.4是最新的版本，支持一些好的新特性，比如本机FUSE支持。|3635403|我可能会选择Ubuntu，每6个月定期发布一次，4月份发布一个3年的LTS版本，非常新的内核和好的补丁版本，以及对sun+6的良好支持。|3635404|为硬件性能和兼容性、支持和安全产品选择操作系统。|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|J|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|K|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|L|8|@]|9|@]|A|$]]]|H|$]]

There's almost nothing between different distros for their ability to execute Java applications. 

However. You should choose an OS with support for modern hardware and chipsets (ie, a relatively new kernel), and a stable release schedule. CentOS is good, 5.4 being the latest release, supports some good new features, like native FUSE support.

I'd probably choose Ubuntu, regular releases every 6 months, a 3 year LTS release coming up in April, very new kernels and good patch releases, and good support for sun-java6.

Choose your OS for hardware performance and compatibility, support, and security offerings.

blocks|key|3635481|text|当然，如果你想要一个正确的答案，你应该在你的非生产硬件环境中测试它的性能。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3635482|您应该考虑多OS生产环境的支持成本，并在计算性能效益时将其考虑到任何COGS+(商品销售成本)。|3635483|我的猜测是，您获得的任何好处都“不足以”超过在生产中支持多个OSs的额外成本。跟你的行动小组谈谈找出答案。|3635484|您的努力可能更好地用于提高您的运营团队已经在生产中支持的OSs上的性能。您可以对操作系统进行调整，还可以切换VM参数，当然，还可以修改代码以提高效率:)。您还可以考虑不同的硬件选项。我们发现不同类型的CPU在工作负载上的行为非常不同，这与典型的基准测试完全不同。|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|J|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|K|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|L|8|@]|9|@]|A|$]]]|H|$]]

Of course you should performance-test this in your non-production hardware environment if you want a proper answer.

You should consider the support costs of having a multi-OS production environment, and factor them in to any COGS (Cost of goods sold) consideration when calculating how much performance benefit you get.

My guess is that any benefit you get is "not enough" to outweigh the additional cost of supporting multiple OSs in production. Talk to your operations team to find out.

Your efforts may be better spent trying to improve performance on the OSs that your Operations team already support in production. You can do tweaks to the OS as well as switching VM parameters and of course, fixing your code to make it more efficient :). You can also consider different hardware options. We've found that different kinds of CPU behave very differently on our workloads, which are not at all like those that typical benchmarks test.

I have a multithreaded Java program. I am dealing with certain perfomance problems.

I have improved everything. Hardware + Software. Now I think that it's time to move to proper Operating System.

I was wondering, what OS is the fastest for Java Virtual machine?

I am using Sun Java6. Do you think that Sun Solaris would be the best choice for Java applications? Or FreeBSD? or CentOS (I am using it currently)?

Thanks

Fastest OS for Java applications

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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我有一个多线程Java程序。我正在处理某些性能问题。我已经改善了一切。硬件+软件现在我认为是时候转向正确的操作系统了。我想知道，Java虚拟机最快的操作系统是什么？我正在使用Sun Java6。您认为Sun Solaris是Java应用程序的最佳选择吗？还是FreeBSD？或者CentOS (我目前正在使用它)？谢谢

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