On Tue, Jun 06, 2006 at 01:39:31PM -0400, Lee Revell wrote: > On Tue, 2006-06-06 at 11:10 -0400, Joshua Boyd wrote: > > I have CONFIG_PREEMPT and CONFIG_PREEMPT_BKL on. My application runs > > with SCHED_FIFO and has an elevated priority, but not realtime > > priority. When I tried setting it to realtime priority it grinds the > > networking, control panel, and VGA display applications to a halt. > > Uhhh, SCHED_FIFO and "realtime priority" are the same thing. > > Can you be more specific? setpriority(PRIO_PROCESS, 0, -20); I was under the impression that that set priority to a "realtime" priority, although rereading the man page I don't see any specific correlation listed between -20 and realtime. I also do: sched_setscheduler(0, SCHED_FIFO, &sp); When I do the setpriority to -20, basically everything other than the main application grinds to a halt. If I use -10 instead, other programs work fine, but networking is then allowed to interfere with the main program. Is this specific enough? I also should probably have mentioned that my application (actually three programs on one box) is heavily threaded. -- Joshua D. Boyd jdboyd@xxxxxxxxxx http://www.jdboyd.net/ http://www.joshuaboyd.org/
