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Does current DAWs really scale that bad? Virtual Instrument Plugins
Old 28th December 2010
  #1
Gear Addict
 
nicogrubert's Avatar
 

Does current DAWs really scale that bad?

Hi there

This evening I made a quick test to see how good my DAWs scale on multiple cores. To be honest: I am shocked how bad they scale.

I used FL Studio 9.7 beta and Ableton Live 8.2.1 on Windows XP SP3.
Hardware:
+ PC, i7-920 CPU, 3 GB of RAM
+ RME HDSP 9632 at 256 Samples (12 ms latency)

I created 2 channels:
1: sampler with kickdrum
2: UHE ACE Softsynth with a cpu hungry patch

Both channels have an identical FX chain of 8 different plugins.

The CPU meter in FL Studio reads 99% and crackles appear.
The CPU meter in Ableton Live reads 78% and if I add some other CPU hungry plugins the CPU goes to 87-93% and audio crackles appear too.

The task manager tells me:
13% CPU usage when running FL Studio
20 % CPU usage when running Ableton Live at 87-93% CPU in Live.

See the picture below:




Is there anything I can do to get a better scaling?
I mean, if the CPU is only at 20% and audio already starts to crackle, something must be wrong.
If I use more tracks then all cores are somewhere between 10% and 40% while the taskmaner CPU reads 25% and audio starts to crackle...
Old 28th December 2010
  #2
Lives for gear
 
jupiter8's Avatar
 

DPC Latency Checker
Run this one and see what it says.
Old 28th December 2010
  #3
Gear Addict
 
nicogrubert's Avatar
 

DPC Latency Checker: everything green.
Current latency is between 20 and 50 µs.
Absolute maximum: 53 µs
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