On Tue, Nov 30, 2010 at 11:59:37AM +0200, David Griffiths wrote:
  Hi all,
 I don't know if this is a known issue or something fixed in recent
 kernels, but I recently found a fix for a problem I was having with my
 harddisk spinning down in live performances, and then loading samples
 from disk:
 
http://www.pawfal.org/dave/blog/2010/11/jackd-performances-and-harddisks/ 
apart from just preventing your harddisk from spinning down, you could
also have increased the -t timeout value.
the semantics of --nozombies only prevent zombification of clients which
dont respond to audiocallbacks in time.
if the client hits the request timeout for normal requests it gets
zombified.
its been a long time since i have seen these kinds of lockups.
what kernel are you using ?
 Also, while I'm here, this was the performance in which I tested the fix
 (slub livecoding at Piksel a couple of weeks ago):
http://giss.tv/dmmdb//player.php?ID=1450&mode_clip&autoplay=no&…
 cheers,
 dave
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torben Hohn