20 Nov
2007
20 Nov
'07
4:58 p.m.
Ken Restivo a écrit :
On Mon, Nov 19, 2007 at 09:41:19PM +0100, David Causse
wrote:
You're right, I misunderstood sched_fifo, it is the realtime scheduling
policy, sched_rt is my invention ;)
David.
Ken Restivo a écrit :
Excellent! That ps cocktail shows it, and it is apparently working. Thanks!
I'm having a bit of difficulty getting chrt
to, um, chrt.
I've written a little MIDI-processing daemon and I want it to run with high priority.
It is very small and tight and I don't expect it to take up much CPU, but I definitely
want it running first.
So I do this:
sudo /usr/bin/chrt -f -p 81 `pidof mydaemon`
And then I do this:
ps -Leo pid,class,rtprio,ni,pri,pcpu,stat,comm --sort -rtprio
And... my daemon does *not* show up in the process list at all.
Try this :
ps Haxo pid,class,rtprio,ni,pri,pcpu,stat,comm --sort=-rtprio
--sort seems to skip some processes with the -edf syntax style, I don't
know why...
But your process won't be on top because you
have set the SCHED_FIFO
wich is not rtprio.
You should use :
chrt -p 81 `pidof mydaemon`
SCHED_RT is the default.
Um... JACKD runs in FIFO mode, or isn't that what the "FF" means in the ps?
PID CLS RTPRIO NI PRI %CPU STAT COMMAND
25176 FF 80 - 120 0.0 SLsl jackd