Realtime Scheduling

GNU Radio
1

Hello:

I am writing a flowgraph using GRC. In the “Options” block, there is
something called “Realtime Scheduling”, which can be On or Off. What
does this do, under the hood? When should you set it to On? When would
you want to set it to Off?

Thanks.

Steve McMahon

2

On Sun, Dec 5, 2010 at 9:05 PM, Steve M.
[email protected] wrote:

Hello:

I am writing a flowgraph using GRC. In the “Options” block, there is something
called “Realtime Scheduling”, which can be On or Off. What does this do, under the
hood? When should you set it to On? When would you want to set it to Off?

Thanks.

Steve McMahon

Real-time scheduling sets the niceness, or scheduling priority, of the
application to a real-time priority. Basically, it makes your
application the most important thing your OS is running. Basically,
don’t set it to use realtime if you don’t know what your program might
do as it could lock it up.

To allow non-root users to set this, edit /etc/security/limits.conf
and add this line:
@usrp - rtprio 50

Tom