Re: Linux Realtime Scheduling Option

[Daniel Jacobowitz <drow@false.org>]

On Mon, Mar 21, 2005 at 01:20:02PM -0600, David Steven Trollope wrote:
> Hi Daniel,
> 
> Our application does change its own priority, but I was concerned with 
> the priority of gdbserver/gdb. Which Linux tools are you referring to? 
> I'll go take a look at them.

Search for 'rt' or 'chrt'; I do not recall which one is current.  I
believe they are in the 'schedutils' distribution.

> In our environment gdb/gdbserver should always run realtime at a set 
> priority. Help me understand why is it not a good idea to have 
> gdb/gdbserver set its own priority based on an option in .gdbinit?

First of all, gdbserver doesn't parse an init file.  You would have to
add a Linux-specific packet type to the remote protocol for GDB to
communicate this to gdbserver.

Secondly, because there are standalone tools to handle the problem.
gdbserver is supposed to be simple; I don't want to add code specific
to a particular, fairly uncommon debugging environment when existing
tools handle it perfectly well.

If you can come up with a reason why the standalone tools can not be
used to solve the problem, then we can rediscuss :-)

-- 
Daniel Jacobowitz
CodeSourcery, LLC