From: raz ben yehuda <raziebe@gmail.com>
To: Anisha Kaul <born.rebel.83@gmail.com>
Cc: linux-rt-users@vger.kernel.org
Subject: Re: Hard real time in user space with preempt_rt patch
Date: Tue, 24 Apr 2012 09:05:44 +0300 [thread overview]
Message-ID: <1335247544.10715.1.camel@raz> (raw)
In-Reply-To: <CAM1yFZ_MLVNK8xPGg5Ad3suQh_AR18k6coyDqX9EurCkh9j9pg@mail.gmail.com>
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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next prev parent reply other threads:[~2012-04-24 6:05 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-24 5:46 Hard real time in user space with preempt_rt patch Anisha Kaul
2012-04-24 6:05 ` raz ben yehuda [this message]
2012-04-24 8:57 ` Mark Hounschell
[not found] ` <CAF-VNaq3bkC=LCB-Emsx20xTm-Vm1v3kduC5MpyXQA_GS6SOhg@mail.gmail.com>
2012-04-24 9:42 ` Mark Hounschell
2012-04-24 16:26 ` Sven-Thorsten Dietrich
2012-04-24 17:25 ` Mark Hounschell
2012-04-24 19:20 ` Lars Segerlund
2012-04-30 13:18 ` Esben Nielsen
2012-04-24 19:37 ` Armin Steinhoff
2012-04-24 11:36 ` John Kacur
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