[ardour-users] ardour timed ou

Jan Depner eviltwin69 at cableone.net
Sat Jul 10 20:29:31 PDT 2004

Some of the effects are not real time.  I think you can check them with
jack-rack.  It lists whether they are RT or not.  Try removing effects
until the problem clears up and then replace them one at a time. 
Freeverb should be OK.  A couple of the TAP plugins aren't RT I think.


On Sat, 2004-07-10 at 17:15, Frode Haugsgjerd wrote:
> When i load ardour with 3-4 tracks and some LADSPA effects, like fast
> overdrive,freeverb and DJ Flanger (guitar tracks), ardour tells me it
> was too slow and that i have to save and restart.
> Relevant Jackd log:
> subgraph starting at ardour timed out (subgraph_wait_fd=17, status = 0,
> state = Running)
> client ardour error: awake_at = 1817455749 state = 2 timed_out = 
> My system:
> Current Debian Unstable
> jackd          0.98.1-4
> ardour-gtk     0.9beta17.1-2
> Jackd invoked with  /usr/bin/jackstart -R -P5 -dalsa -dhw:0 -r44100
> -p1024 -n2 -S -H -M
> This setting yelds 46,4 msec latency :(
> Tried many other combinations, no luck.
> Vanilla 2.6.7 kernel w. realtime-lsm 0.1.1-2 and LD_ASSUME_KERNEL=2.4.19
> Tried also Ingo's patch against 2.6.7-vanilla, 
> WARNING! using the LD_ASSUME_KERNEL trick with this kernel wil bog down
> your system, almost impossible to kill ardour from a tty. (but you
> wizzards probably knew that)
> HW:
> Celleron 2,2 Ghz
> 512 Ram
> Old SBLive! (1998)
> Onboard SiS962 Sound (alsa snd_intel8x0)
> I have read up on latency and tested my system with latency-graph-0.2
> http://fsb.x86.no/~froh/div/test.gif
> This test is while opening lots of heavy apps like Openoffice,
> mozilla.., while copying a kerneltree to another partition and compiling
> a 2.6.7 kernel. The load was well over 3 , an there was no audible
> skipping in xmms playback while doing this test.
> I have tested the latest nightly ardour build, and also tested with my
> onboard SiS962 sound, to no avail.
> Any help is greatly appreciated, 'cause Ardour is one killer app.

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