On Mon, 2007-10-29 at 23:54 +0200, Chuckk Hubbard wrote: > On 10/29/07, Florian Schmidt <mista.tapas@xxxxxxx> wrote: > On Monday 29 October 2007, Chuckk Hubbard wrote: > > On 10/25/07, Florian Schmidt <mista.tapas@xxxxxxx> wrote: > > > Well, if chrt works now without sudo, try running > > > > > > jackd -R -P 70 -d alsa ... > > > > > > again. It should work now, too.. > > > > Update: I just discovered that running jackd -R -P 70 -dalsa > -P -p256 -n2 > > -r44100 as ROOT doesn't even set priority 70. jackd then > runs as a root > > process with priority 20, according to both chrt and top. > > Apparently my system is not able to run anything higher than > 20 priority; > > does this mean my kernel is misconfigured, or might it be > something else? > > -Chuckk > > install htop > > run it > > press f2 [setup] > -> Display Options > -> uncheck "Hide userland threads" > -> uncheck "Hide kernel threads" > > Do you see all 4 jack threads now? > > Woop, there it is. Thanks. I see 5 actually, one -71, one -81 > (watchdog?), and the rest 20. Running Csound with its --sched=N flag, > I also see two csound processes, one of which is -70 and the other 20, > no matter what value I put... time to take that up with the Csound > list I guess. With JACK output? From the Csound manual: "DO NOT use "--sched" if you are using JACK for audio output. JACK controls scheduling for the audio applications connected to it, and also tries to run at the highest possible priority. If the "--sched" flag is used, Csound and JACK will be competing rather than cooperating, resulting in extremely poor performance." --ll
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