[PD-dev] [ pure-data-Bugs-2791638 ] Jack OSX cpu load

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Mon May 18 11:56:42 CEST 2009


Bugs item #2791638, was opened at 2009-05-14 10:16
Message generated for change (Comment added) made by nobody
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Category: None
Group: v0.42
Status: Pending
Resolution: None
Priority: 5
Private: No
Submitted By: boonier (boonier)
Assigned to: Nobody/Anonymous (nobody)
Summary: Jack OSX cpu load

Initial Comment:
In Jack mode, Blank empty patch

Toggling Compute Audio on and then off results in cpu load jumping up to ~25% from a nominal 1%. Turn Compute Audio back on, and cpu drops back to nominal 1%.

Tested on 2.4ghz iMac , OS 10.5.6. Pd-0.41.4-extended-rc1

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Comment By: Nobody/Anonymous (nobody)
Date: 2009-05-18 09:56

Message:
hi - sorry for delay

hmm i don't understand why when Pd is runing in Jack mode and you switch
audio off, why it would revert to a Portaudio state? I that what you are
saying?

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Comment By: Hans-Christoph Steiner (eighthave)
Date: 2009-05-14 16:24

Message:
For me, Pd without Jack, i.e. just using coreaudio/portaudio, it will use
25% of my CPU just idling.  That's a known issue.  With Jack, it goes down
to 5-7% at idle.   So my guess is that the first time the 25% spike is
caused by the same think.  

Is this causing any problems for you?

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