Messages in this thread | | | Date | Thu, 6 Oct 2005 13:38:33 -0700 | From | Mark Knecht <> | Subject | Re: 2.6.14-rc3-rt10 - xruns & config questions |
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On 10/6/05, Mark Knecht <markknecht@gmail.com> wrote: > On 10/6/05, Ingo Molnar <mingo@elte.hu> wrote: > > > > * Mark Knecht <markknecht@gmail.com> wrote: > > > > > I am still getting a few xruns even after raising Jack's priority > > > level to 80. I am wondering whether it's fair to report these when I > > > have CONFIG_DEBUG_PREEMPT set? > > > > > 4559 78 38 [IRQ 58] > > > > > 58: 257570 IO-APIC-level hdsp > > > > IRQ 58 is your audio interrupt, right? You should raise that one to prio > > 80 too. (via chrt) > > > > > Since my NIC is getting a higher priority than both my sound card and > > > my 1394 audio drives (IRQ217 vs. IRQ58/IRQ66) I assume that network > > > activity might possibly sometimes cause a problem? Or is this not > > > true? > > > > yeah, that could be the case. > >
> > Can you suggest how I might be able to do this at boot time?
Apologies for answering myself...
I found an old conversation that answered this, at least when I'm logged in as root. Hopefully it will work at boot time also:
chrt -f -p 80 `pidof "IRQ 58"`
I noted that the default chrt command changed the IRQ process from SCHED_FIFO to SCHED_RR so I assume I really should leave it at SCHED_FIFO?
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