blocks|key|741591|text|FreeRTOS，它提供底层内核。我在一些嵌入式应用程序中使用过它，它看起来很健壮。但是，这确实取决于您的应用程序。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|741592|http://www.freertos.org/|offset|length|741593|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|O|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@$D|O|E|P|1|Q]]|A|$]]|$1|F|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|C]]]]

FreeRTOS, it provides the underlying kernel. I've used it in some embedded apps and it seems robust. But, it really depends on your application.

<a href="http://www.freertos.org/" rel="nofollow noreferrer">http://www.freertos.org/</a>

blocks|key|416439|text|查看eCos免费、开放源码和实时操作系统.(支持x86，不确定多核)|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|416440|RTLinux也是可用的|416441|entityMap|0|LINK|mutability|MUTABLE|url|http://ecos.sourceware.org/|1|http://www.rtlinuxfree.com/^0|2|4|0|0|0|7|1|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]]|C|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]]]

Check out <a href="http://ecos.sourceware.org/" rel="nofollow noreferrer">eCos</a> free, open source and real-time operating system. (Supports x86, not sure about multi-core)

<a href="http://www.rtlinuxfree.com/" rel="nofollow noreferrer">RTLinux</a> is also available

blocks|key|741636|text|eCos是免费的(但你可以得到付费支持)。它支持英特尔的x86架构。它支持多处理器系统。根据您的时间要求，我在实时Linux系统方面没有太好的经验。虽然平均响应时间可能很好，但我已经看到几天内最糟糕的情况可能是10倍甚至100倍。我想这部分取决于驱动程序的质量，部分取决于调度程序本身。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|741637|但我想归根结底是您的系统需要硬实时还是软实时，时间限制是什么，您需要运行什么样的应用程序。以及你所需要的精简开发系统。|741638|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

eCos is free (but you can get paid support). It supports Intel x86 architecture. It supports multi-processor systems. Depending on your timing requirements, I've had not too good experience with real-time Linux systems. Although response time may be good in average, I've seen cases where the worst case over a few days may be 10 or even 100 times as much. I guess this partly depends on the quality of the drivers, partly on the scheduler itself.

But I guess it boils down to whether your system demands hard or soft real-time, what the timing constraints are, what kind of application you need to run. And how streamlined development system you require.

blocks|key|416583|text|Linux内核有一些硬的实时扩展。你可能想看看其中的一些。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|416584|好的例子是RTAI和LXRT。|416585|区域贸易协定|offset|length|416586|entityMap|0|LINK|mutability|MUTABLE|url|https://www.rtai.org/^0|0|0|0|6|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@$F|S|G|T|1|U]]|A|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]]]

There are hard real-time extensions to the Linux kernel. You might want to check some of those out.

Good examples are RTAI and LXRT

<a href="https://www.rtai.org/" rel="nofollow noreferrer">RTAI</a>

blocks|key|416619|text|OpenSolaris具有实时功能，但是如果您决定使用它进行实时开发，您应该小心:几乎所有I/O都会导致内核中的优先级倒置(低优先级的系统工作线程可能会饿死并导致高优先级线程被阻塞，例如在流代码中)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|416620|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

OpenSolaris has real-time capabilities, however you should watch out if you decide to use it for real-time development: pretty much all I/O can cause priority inversions in the kernel (low-priority system worker threads can starve and cause high priority threads to be blocked, e.g. in STREAMS code).

blocks|key|1950778|text|我还一直在使用FreeRTOS操作系统，该操作系统可以在修改后的GNU许可证、付费商业许可证版本或昂贵的安全认证版本(SafeRTOS)下免费使用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1950779|在网站上有一个x86端口，如下所示|1950780|x86|1950781|*+Supported+processor+families:+Any+x86+compatible+running+in+Real+mode+only,+plus+a+Win32+simulator
*+Supported+tools:+Open+Watcom,+Borland,+Paradigm,+plus+Visual+Studio+for+the+WIN32+simulator|code-block|syntax|javascript|1950782|该操作系统提供具有队列、信号量和任务优先级设置的抢占式或合作性任务调度。它不提供其他大型OS实现(如Linux+)附带的I/O或文件库功能。|1950783|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|Q|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|R|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

I have also been using the FreeRTOS operating system that is available either for free under a modified GNU licence, a paid commercial licence version or an expensive safety certified version (SafeRTOS)

From the web-site there is an x86 port as follows 

<h1>x86</h1>

<pre><code>* Supported processor families: Any x86 compatible running in Real mode only, plus a Win32 simulator
* Supported tools: Open Watcom, Borland, Paradigm, plus Visual Studio for the WIN32 simulator
</code></pre>

This OS provides the pre-emptive or co-operative task scheduling with queues, semaphores and priority setting for the tasks. It does not provide the sort of I/O or file library functions that come with other larger OS implementations like Linux.

blocks|key|742002|text|你的确切要求是什么？也许你可以使用普通的Linux+-它不提供实时保证，但可能足够好。有些人发现，这并不像实时销售商想要做的那样糟糕。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|742003|普通Linux也有不同的调度策略，但并不是很多人都知道这一点。|742004|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

What are your exact requirements? Perhaps you can use vanilla Linux - it doesn't provide real-time guarantees but might be good enough. Some people find that it's not as bad as the real-time vendors try to make out.

Vanilla Linux DOES have different scheduling policies as well, but not a lot of people know that.

blocks|key|1950561|text|普雷克斯是在BSD许可下。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1950562|entityMap|0|LINK|mutability|MUTABLE|url|http://prex.sourceforge.net/^0|0|4|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

<a href="http://prex.sourceforge.net/" rel="nofollow noreferrer">Prex</a> is under BSD License.

blocks|key|416466|text|这就是S.Ha.R.K.项目。它适用于x86+CPU，但我不知道它是否处理一个CPU的所有核心。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|416467|entityMap|0|LINK|mutability|MUTABLE|url|http://shark.sssup.it/^0|3|9|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

There is the <a href="http://shark.sssup.it/" rel="nofollow noreferrer">S.Ha.R.K.</a> Project. It works with x86 CPUs but I don't know if it handles all cores of a CPU.

blocks|key|741622|text|这不是开源，但是你知道Windows是一个硬实时操作系统，并且它有一个x86端口吗？不过，我不知道它是否能支持多核CPU。如果这是一个商业项目，你绝对应该考虑它。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|741623|还有MicroC/OS-II，它有一个x86端口，但如上所述，我不知道它是否支持多核。它对非商业应用是免费的。|offset|length|741624|entityMap|0|LINK|mutability|MUTABLE|url|http://en.wikipedia.org/wiki/MicroC/OS-II^0|0|2|C|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

Well this is not Open Source, but did you know that Windows CE is a hard real time operating system and that it does have a x86 port? I don't know however if it can support multi core CPUs. If it is a commercial project, you definitely should consider it.

There is also <a href="http://en.wikipedia.org/wiki/MicroC/OS-II" rel="nofollow noreferrer">MicroC/OS-II</a>, which has a x86 port, but as above, I don't know if it supports multi cores. It is free for non-commercial applications.

blocks|key|1950727|text|正如其他人已经提到的，Linux有一些实时扩展。看看xenomai.org。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1950728|我不太确定多处理器的问题。您到底想在多个处理器上做什么？|1950729|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

There are real-time extensions to Linux, as already mentioned by someone else. Have a look at xenomai.org.

I'm not so sure about the multiprocessor issue. What exactly do you want to do on your multiple processors?

blocks|key|1950785|text|BeRTOS看起来很有趣。但是对于x86，它只支持“仿真器”。但不知道为什么。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1950786|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

BeRTOS looks quite interesting. But for x86 it supports "emulator only". Not sure why though.

Are there any open source real time operating systems out there? I've heard of real-time Linux, but most implementations seem to really be a proprietary RTOS (that you have to pay for) that run Linux as a process -- much the same way Ardence's RTX real-time system works for Windows.

EDIT: I should clarify that I'm looking for RTOS to work with multi-core x86-family CPUs.

Are There any Open Source Real Time Operating Systems for x86?

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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有开源的实时操作系统吗？我听说过实时Linux，但大多数实现似乎都是一个专有的RTOS (您必须付费)，它将Linux作为一个进程运行--就像阿登斯的RTX实时系统适用于Windows一样。编辑:我应该澄清，我正在寻找RTOS与多核x86家庭CPU工作。

问x86有开放源码的实时操作系统吗？
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问x86有开放源码的实时操作系统吗？
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