From: Thomas Gleixner <tglx@linutronix.de>
To: Chris Edwards <cedwards@ripples.dyndns.org>
Cc: Steven Rostedt <rostedt@goodmis.org>,
linux-rt-users <linux-rt-users@vger.kernel.org>
Subject: Re: IRQ "nobody cared...Disabling" errors on linux-3.0.10-rt27 on SMP AMD64 system
Date: Sat, 3 Dec 2011 17:29:05 +0100 (CET) [thread overview]
Message-ID: <alpine.LFD.2.02.1112031726370.2735@ionos> (raw)
In-Reply-To: <4ED9EEB2.6070401@ripples.dyndns.org>
On Sat, 3 Dec 2011, Chris Edwards wrote:
> linux-3.0.9 mainline, with "threadirqs":
>
> IRQs:
> 17 Firewire
> 18 Radeon
> 19 Gina24
>
> IRQ 17 is definitely noisier now, with ~500,000 interrupts during 4 mins
> uptime without JACK running, but no "nobody cared" errors observed.
>
> JACK/FFADO runs OK, ~3200 interrupts/s on IRQ 17 (--rate 96000 --period
> 128 --nperiods 3). DSP load 30%.
>
> PROBLEM: Audio drop-outs and JACK XRUNs while playing back in Ardour.
> These seem to coincide with extra bursts of interrupt activity on IRQ 17
> (4,000-10,000 per second, above the 3,200 baseline). Same problem observed
> using mplayer with JACK playback.
Ok, that tells us something. So there is something unhappy in your
system about the way how the threaded irq handling works. Can you
please provide the output of lspci -vvv and a full boot log (any
3.0/3.2 kernel you have handy)?
Thanks,
tglx
next prev parent reply other threads:[~2011-12-03 16:29 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-23 12:39 IRQ "nobody cared...Disabling" errors on linux-3.0.10-rt27 on SMP AMD64 system Chris Edwards
2011-11-23 13:52 ` Steven Rostedt
2011-11-23 23:12 ` Chris Edwards
2011-11-29 2:25 ` Chris Edwards
2011-11-30 22:10 ` Steven Rostedt
2011-12-03 9:41 ` Chris Edwards
2011-12-03 10:42 ` Chris Edwards
2011-12-03 16:29 ` Thomas Gleixner [this message]
[not found] ` <4EDAAEFD.9060209@ripples.dyndns.org>
2011-12-04 13:32 ` Thomas Gleixner
2011-12-05 13:39 ` Chris Edwards
2011-12-05 16:56 ` Thomas Gleixner
2011-12-05 18:14 ` Borislav Petkov
2011-12-05 21:02 ` Thomas Gleixner
2011-12-06 2:51 ` Chris Edwards
2011-12-06 11:17 ` Borislav Petkov
2011-12-07 0:32 ` Thomas Gleixner
2011-12-06 19:42 ` Borislav Petkov
2011-12-07 0:37 ` Thomas Gleixner
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