[FFADO-devel] [FFADO] #179: ffado 2.0 and swap creates xruns

[FFADO <ffa...@ff...>]

#179: ffado 2.0 and swap creates xruns
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   Reporter:  dx9s                    |       Owner:           
       Type:  bug                     |      Status:  new      
   Priority:  major                   |   Milestone:  FFADO 2.0
    Version:  FFADO SVN (2.0 branch)  |    Keywords:  b1484    
Device_name:                          |  
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 I **stumbled** on this by accident (short/long story about disabling swap
 and reusing that partition to try to install XP and flash firmware)

 When I was using my Echo AF12 initially it worked flawlessly (and I had no
 swap partition enabled) ... solid for 20 minutes at 3x64 and 48kHz -- even
 storing WAVs to external USB2 HD.

 At some point after that I wiped the XP partition (never used it for
 updating firmware, brought AF12 to work and [ab]-used an XP+SP2 machine
 there) and re-enabled swap at boot (/etc/fstab)

 and I was getting XRUNS regardless of what jackd settings used with ffado.
 Just COULDN'T stop them, and I was smart to remember the change I did and
 reversed it (swapoff /dev/sdX) and restarted and tada SOLID

 so a work around for those having XRUNs and for testing purposes is to
 disable swap memory (can script it inside qjackctl via gksudo swapoff
 /dev/sdX)

 I have a sneaky suspicion that some buffer and/or code space (perhaps all
 of it) isn't properly "locking" it's memory or something like that. Since
 I don't fully understand the details... I'll shut-up and leave it at that.

 --Doug

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Ticket URL: <http://subversion.ffado.org/ticket/179>
FFADO <http://subversion.ffado.org/index.fcgi>
Free Firewire Audio Drivers