[sc-users] Bad leopard performance? Or something else?

[Josh Parmenter]

The AirPort problem has to do with occasional spikes in the CPU usage  
for no apparent reason. Not with over all load.

Josh

On Apr 20, 2008, at 7:02 PM, Batuhan Bozkurt wrote:

> Ok, he says that turning airport off changes nothing for him(in  
> terms of
> load), and the reported cpu usage of supercollider is the same with  
> the
> one reported by activity monitor(scsynth process), both around 80%. So
> SC is reporting correctly I think.
>
> BB
>
> Batuhan Bozkurt wrote:
>> I've totally missed the airport issue since I'm using tiger on a
>> (ahem)hackintosh right now(without airport off course). I'll inform  
>> my
>> friend, so he will try by disabling airport and I'm going to report
>> back. And if there is a huge difference between activity monitor  
>> report
>> and scmeter, I'll ask and try to file a bug report as Scott  
>> requested.
>>
>> Thanks.
>> BB
>>
>>
>> Josh Parmenter wrote:
>>
>>> And... if you built your own SCs, watch out for the difference  
>>> between
>>> Development and Deployment builds. If you are using the same build,
>>> then this shouldn't matter (just thought I would mention it).
>>>
>>> In general, I find performance with Leopard the same as Tiger on the
>>> same laptop (as long as AirPort is off).
>>>
>>> Josh
>>>
>>> On Apr 19, 2008, at 6:27 PM, felix wrote:
>>>
>>>
>>>> did you turn airport off ?  it depends which os update you are
>>>> running.  the newer ones are broken.
>>>>
>>>>
>>>>
>>>>
>>>> On Sat, Apr 19, 2008 at 11:46 PM, Batuhan Bozkurt
>>>> <batuhan at batuhanbozkurt.com <mailto:batuhan at batuhanbozkurt.com>>  
>>>> wrote:
>>>>
>>>>    We were sharing some code with a friend of mine, we observed  
>>>> some
>>>>    performance differences so I wanted to ask. He is using Leopard
>>>>    on a new
>>>>    macbook pro c2duo running at 2.4ghz(santa rosa I believe), and  
>>>> my
>>>>    laptop
>>>>    is running tiger 10.4.8 c2duo 2ghz. He also has 2gigs of ram and
>>>>    I have 1gb.
>>>>
>>>>    We tested with the following code:
>>>>
>>>>    (
>>>>    SynthDef("testing", { var sinebank = Array.fill(300,
>>>>    { Pan2.ar(Pulse.ar(LFNoise1.kr(0.005).range(1, 16000),
>>>>    LFNoise1.kr(2).range(0.001, 0.99), 300.reciprocal),
>>>>    LFNoise1.kr(0.5)); });
>>>>                                  var sum = Mix.ar(sinebank);
>>>>                                  Out.ar([0, 1], sum); } ).load(s);
>>>>    )
>>>>
>>>>
>>>>    Synth.new("testing");
>>>>
>>>>    This runs with 3000 UGens on server. We both have the same sound
>>>>    card,
>>>>    which is m-audio fasttrack pro. Running with coreudio drivers,
>>>>    512samples buffer, 44.1kHz sampling rate.
>>>>
>>>>    On my computer, this piece of code reports 51% avg and peak  
>>>> cpu load.
>>>>    But on his faster computer running leopard, sc reports 80% load.
>>>>
>>>>    I'm not sure if it is right to ask for your individual results  
>>>> on
>>>>    this
>>>>    mailing list, but maybe someone has an idea on this issue. Why  
>>>> is
>>>>    there
>>>>    such a huge difference in cpu load?
>>>>
>>>>    Thanks
>>>>    _______________________________________________
>>>>    sc-users mailing list
>>>>    sc-users at create.ucsb.edu <mailto:sc-users at create.ucsb.edu>
>>>>    http://lists.create.ucsb.edu/mailman/listinfo/sc-users
>>>>
>>>>
>>>>
>>>>
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>>> ******************************************
>>>
>>> /* Joshua D. Parmenter
>>>
>>> http://www.realizedsound.net/josh/
>>>
>>>
>>> “Every composer – at all times and in all cases – gives his own
>>> interpretation of how modern society is structured: whether actively
>>> or passively, consciously or unconsciously, he makes choices in this
>>> regard. He may be conservative or he may subject himself to  
>>> continual
>>> renewal; or he may strive for a revolutionary, historical or social
>>> palingenesis." - Luigi Nono
>>>
>>> */
>>>
>>> ------------------------------------------------------------------------
>>>
>>> _______________________________________________
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>>>
>>
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******************************************
/* Joshua D. Parmenter
http://www.realizedsound.net/josh/

“Every composer – at all times and in all cases – gives his own  
interpretation of how modern society is structured: whether actively  
or passively, consciously or unconsciously, he makes choices in this  
regard. He may be conservative or he may subject himself to continual  
renewal; or he may strive for a revolutionary, historical or social  
palingenesis." - Luigi Nono
*/