Re: Why is real time pinging not possible with RT kernels?

Sebastian Andrzej Siewior
2017-06-13T11:58:21Z

On 2017-06-12 07:57:18 [-0500], Corey Minyard wrote:
> A few notes on what you have done:
>
> * ionice doesn't affect network I/O.
> * renice does not set real-time priorities.
> * You don't do anything with memory locking. What happens
> if memory in your program gets paged out then is required?
> * Something on the other end of the ping is running, too. It
> also needs to be real-time, too, and it's not by default.

You forgot to mention that the real-time kernel is not automatically
overclocking the software in terms of performance (but providing
determinism).

> I'd suggest you need to spend some time learning before you attempt
> something like this.
>
> -corey

Sebastian