Re: [LAU] : jack CPU % is going crazy !

Mysth-R wrote:
> I forgot to precise that my sound card is a Presonus Firebox and run
> with Freebob.
> I got the idea to test with my U-control Uca202 (Behringer) Usb
> sound-card, and there is no problems. The cpu percent is quite stable
> around 2,1%.
> It is a bit strange because I got the rtirq script congiured for my
> firewire card. So it should not work better than my firewire ...
>
> I am a bit lost !! :O[

Is the 'real' cpu time (e.g. from top) also that high? It could be that
there is a bug in the time reporting of the freebob backend, resulting
in a bad calculation of the cpu time.

Greets,

Pieter

>
> 2008/4/6, Mysth-R <mysthr21@email-addr-hidden <mailto:mysthr21@email-addr-hidden>>:
>
> Hi, and thank you for your answer.
>
> I am actually trying qjackctl 0.2.23 and the problem is the same. So
> it should not be a QT problem.
> Anyway, I can note that for the same qjackctl config the cpu load
> percent is lower on version 0.2.23 (~= 2.5 - 3%) than on the 0.3.2
> version (3 - 4.5%).
>
> If someone has anonther Idea ... :)
> Cheers,
>
> Mysth-R
>
> 2008/4/5, Russell Hanaghan <hanaghan@email-addr-hidden
> <mailto:hanaghan@email-addr-hidden>>:
>
> Sounds similar to the issue I spoke of here a week ago.
> If its the latest Qjackctl built with QT4, its a QT4 problem of yet
> to be defined origin. Only difference I had, going by your
> description, was that
> My CPU was running at 99% and staying there.
>
> If you run jack from the command line and see normal Cpu, this
> would point to the same problem.
>
> I have not yeilded a root cause from my Googling. Only some
> similar instances from other users, not only with Qjackctl & Qsynth,
> but also Skype and others built with QT4.
>
> My fix for now was to revert to an older version of qjackctl.
>
> Thanks!
>
>
>
> On Apr 5, 2008, at 10:26 AM, Mysth-R <mysthr21@email-addr-hidden
> <mailto:mysthr21@email-addr-hidden>> wrote:
>
>> Hello list,
>> Since I have installed Gentoo I got some issue with JACK. I am
>> using Jackdmp
>> When I run qjackctl all is right but the CPU percent, in spite
>> of staying around 3 or 4% it is moving : 4% then 3 %, then it
>> passes to 27% then 10% and 53% and 4% ...
>>
>> I don't understand very well what it is going wrong.
>> My config : gentoo 64 bits version on a Dell Insprion 9400
>> Intel Core Duo 2 T7200 with 2 Go Ram.
>> Firstly I had installed jack 0.109 and the issue was worse
>> that jackdmp :sometimes CPU load until 80%
>>
>> The kernel I use was compiled by my own. Perhpas I forgot an
>> option or something...
>> uname -a :
>> 2.6.24-rt1 #4 SMP PREEMPT RT Sun Mar 16 21:42:41:CET 2008 x86_64 Intel(R) Core(TM)2 CPU T7200 @ 2.00GHz GenuineIntel GNU/Linux
>>
>> Thank you very much for your help.
>>
>> Cheers,
>> Mysth-R
>>
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Received on Mon Apr 7 12:15:01 2008