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Could this be the difference between 1.9.8 and git version?

On Oct 29, 2012 12:10 PM, "Robin Gareus"  wrote:
> On 10/29/2012 03:55 PM, Ivica Ico Bukvic wrote:

quoted text
> > All,

> >

> > I noticed since upgrading to Ubuntu 12.04 that the default Jack server is

> > jackdmp (v.1.9.8). Please correct me if I am wrong but my understanding

> this

> > is the smp-enabled version 2 that is being developed in parallel with 1.x

> > series of regular jack.

>

> correct. They are also API and ABI compatible.

>

> > Either way, one of my concerns is that while in the old jack when one

> > accidentally pulled the soundcard jack was trying to talk to (e.g. a USB

> > soundcard), the jack would gracefully stop.

>

> In my experience it stopped but never gracefully (ie it crashed). but

> it's been a while since I used jack1.

>

> > The new version (and this could

> > be Ubuntu quirk) instead of stopping is pegged in some kind of a spinlock

> > that often times locks up the machine (this may be in part since I am

> > running a lowlatency kernel with audio group given priority) and at times

> > keeps it operational while hogging the cpu and making the computer barely

> > responsive until jackd is killed. Apps connected to jack that I tested so

> > far are also stuck in a loop waiting for a response from jack (although

> this

> > could be the app's shortcoming)--jack never broadcasts a signal that it

> has

> > lost the soundcard (AFAICT). FWIW I am running jackdmp through

> qjackctl...

> > Any thoughts on this matter would be most appreciated.

> >

>

> I can't reproduce this. jack2 stops the backend when the device is

> disconnected. You can switch to a new backend using jack_control

> (sending some Dbus messages to jackd) without re-starting jackd. No CPU

> hogging here. - I'm running jack2 - aka 1.9.9.4 from git.

>

> robin

>

>

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Could this be the difference between 1.9.8 and git version?<=

/p>

On Oct 29, 2012 12:10 PM, "Robin Gareus&quo=

t; <robin@gareus.org> wrote:<=

br type=3D"attribution">

On 10/29/2012 03:55 PM, Ivica Ico Bukvic wrote:

quoted text
> All,

>

> I noticed since upgrading to Ubuntu 12.04 that the default Jack server=

 is

quoted text
> jackdmp (v.1.9.8). Please correct me if I am wrong but my understandin=

g this

quoted text
> is the smp-enabled version 2 that is being developed in parallel with =

1.x

quoted text
> series of regular jack.

correct. They are also API and ABI compatible.
> Either way, one of my concerns is that while in the old jack when one<=

br>

quoted text
> accidentally pulled the soundcard jack was trying to talk to (e.g. a U=

SB

quoted text
> soundcard), the jack would gracefully stop.

In my experience it stopped but never gracefully (ie it crashed). but

it's been a while since I used jack1.
> The new version (and this could

quoted text
> be Ubuntu quirk) instead of stopping is pegged in some kind of a spinl=

ock

quoted text
> that often times locks up the machine (this may be in part since I am<=

br>

quoted text
> running a lowlatency kernel with audio group given priority) and at ti=

mes

quoted text
> keeps it operational while hogging the cpu and making the computer bar=

ely

quoted text
> responsive until jackd is killed. Apps connected to jack that I tested=

 so

quoted text
> far are also stuck in a loop waiting for a response from jack (althoug=

h this

quoted text
> could be the app's shortcoming)--jack never broadcasts a signal th=

at it has

quoted text
> lost the soundcard (AFAICT). FWIW I am running jackdmp through qjackct=

l...

quoted text
> Any thoughts on this matter would be most appreciated.

>

I can't reproduce this. jack2 stops the backend when the device is

disconnected. You can switch to a new backend using jack_control

(sending some Dbus messages to jackd) without re-starting jackd. No CPU

hogging here. - I'm running jack2 - aka 1.9.9.4 from git.
robin
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