[PD] audio gets "scratchy" -- setting process priority on windows XP

[oliver]

i aldo ran into this problem, and found out a weird thing:

if any midi-stuff is defined in the start-up script (i.e. -midiindev 
etc.), setting HIGH priority using the "start" command doesn't work! 
really haven't got a clue why. so there's several possibilities:

1.) deactivate MIDI in your start-up script if you don't need it.
2.) if you do need MIDI, start a second PD and route your midi stuff to 
your NON-MIDI PD using OSC or netsend/netreceive
3.) there's a nice little freeware command-line utility called 
"process". you can download it here:
http://www.beyondlogic.org/solutions/processutil/processutil.htm

this allows to set priorities with the command line. it's just an .exe 
file that you put where your machine finds it. then you also need the 
"motex" library for the [system] object. give it a message called
[process -p PD.EXE High(

you can then automate this thing with loadbang (and maybe a slight delay 
- like 1 second...)


i know this is quirky, but at least it works and functions automatically.

good luck

oliver


Josh Steiner wrote:
> interesting, i've occastionally set the priority higher in the 
> taskmanager which seems to help avoiding stutters when moving objects 
> around and such, but when i try your command like alone, it works: pd is 
> running at high priority, but if i stick "cmd /c start /High " in front 
> of my big line in the .bat with all the -lib's and -path's and 
> -audiodev's and such, it starts as normal priority... any ideas?
> 
>>
>> hi, if you're talking WinXP:
>>
>> i have an audio problem, that results in "scratchy sound" now and 
>> then, as long as PD is not at least in HIGH priority mode.
>>
>> i think by default it is in NORMAL mode and by setting it 
>> automatically to HIGH (by batch command "cmd /c start /High 
>> D:\pd\bin\pd.exe") i removed the problem. it is important though that 
>> "wish32.exe" (the GUI) stays in NORMAL priority
>>
>> just my 2c
>>
>> ciao
>>
>> oliver
>>
> 
> 

-- 


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