[nas] NAS freezing up

[David Woodfall]

On (11/04/13 15:05), David Woodfall <dave at dawoodfall.net> put forth the proposition:
>On (11/04/13 14:46), David Woodfall <dave at dawoodfall.net> put forth the proposition:
>>On (10/04/13 08:39), Paul Fox <pgf at foxharp.boston.ma.us> put forth the proposition:
>>>erik wrote:
>>>>Hi,
>>>>
>>>>On Wed, Apr 10, 2013 at 05:26:26AM +0100, David Woodfall wrote:
>>>>> I've been using nas a while now and I'm finding that it seems to
>>>>> freeze up at times. It happens randomly and is hard to predict. I have
>>>>> to kill -9 it, restart it, hit play on umplayer to continue watching.
>>>>>
>>>>> Is there any way of debugging this? I've tried running it with verbose
>>>>> but nothing is showing in the console.
>>>>
>>>>By default, all logging is via syslog. There is a debug option available as
>>>>well that increases the info over verbose.
>>
>>I can't see anything useful in the log even with debug at 99.. there's
>>also nothing useful in mplayer output. I may have a go at an strace
>>although I fear the strace log is going to huge since it happens maybe
>>every other movie or so.
>>
>>I never saw this behaviour until I upgraded my old media box from an
>>old Athlon XP 32bit to a new dual core 64bit machine. I'm wondering if
>>it's a hardware or even network problem. Not quite sure where to look
>>at the moment.
>
>I think I can say that it isn't a network problem - I just pulled the
>network cable on my laptop while playing and I only had to pause/play
>mplayer and it continued with no problem and without having to restart
>nasd.
>
>I also checked the dates of my /dev/dsp* to see whether perhaps
>something flakey was happening with the USB output but they haven't
>been recreated since I booted the box up some months back.
>
>>>i've been seeing this as well, though i think it started for me when i
>>>began running nasd via /usr/bin/aoss, to get it to play well with alsa
>>>(in particular, dmix).
>
>What is your output device? USB, SPDIF, analog? My old box used coax
>and optical, but this new one only has onboard USB and analog outs 
>since I haven't yet bought a decent sound card for it. Wondering if 
>the
>onboard USB is flakey...
>
>>>when i've strace'd a hung process, it's always been stuck on a futex
>>>call, but that doesn't narrow it down much.

Strace log is here: http://www.dawoodfall.net/nasd/strace.log

If anyone can grab anything useful that'd be great.