Re: Hard real time in user space with preempt_rt patch

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On Tue, 2012-04-24 at 11:16 +0530, Anisha Kaul wrote:
> From: https://rt.wiki.kernel.org/articles/f/r/e/Frequently_Asked_Questions_7407.html
> 
> > Real-time only has impact on the kernel; Userspace does not notice the difference except for better real time behavior.
> 
> Does it mean that if we write the applications in user space, they
> won't get the hard real time effect?
> The threads running in the userspace won't get the hard real time effect?
user DOES get real time. The quote means that you need not to change the
application. in short, you u usleep for 2 ms, you wake after 2ms if you
have the system correctly tuned.
> I am not able to understand the English behind the quote. Please clarify.
> 
> Regards,
> Anisha
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