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High CPU usage even if all decks stopped

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I'm experiencing very strange CPU usage patterns, the following values are using the 'High Performance' power plan:

 

All decks stopped:

  • Window minimised: CPU usage = 13~15%
  • Window not minimised: CPU usage = 37~39%

All 4 decks playing:

  • Window minimised: CPU usage = 10~13%
  • Window not minimised: CPU usage = 30~32%

In Traktor, more decks playing always means more CPU. Minimising the window also reduces CPU. With the window not minimised, CPU usage is 6~7% with all decksstopped and 9~10% with all decks playing.

 

I wonder if other users see similar results, thanks [smile]

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Below are my results using Intel Co i7-3770 @ 3.40 Ghz. The audio buffer size is 128 samples and the samplerate is 44100KHz (...this is important because CPU usage will be higher if the buffer size is smaller or samplerate is bigger).

 

All decks stopped:

- Window minimised: CPU usage = 5-6%

- Window not minimised: CPU usage = 7~8%

 

All 4 decks playing:

- Window minimised: CPU usage = 5-6%

- Window not minimised: CPU usage = 7~8%

 

 

Rendering the screen uses generally more CPU than the audio process. When the decks are stopped (paused) they are not really stopped internally. I think that DD is not the more efficient program in terms of CPU usage but even in your case using 40% of the CPU shouldn't be a big problem for the system (I guess).

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Interesting, you get the similar CPU usage whether decks are playing or not. I'm using a Surface Pro 4 with Core 2.20 GHz i7-6650U. Theoretically it should be able to handle even higher CPU usage but the problem is heat builds up and some times it shows the "overheat" logo and automatically puts itself to sleep.

 

It seems like it could be a graphics issue, if the CPU is doing the work of the GPU that would explain my results. I'm going to update my graphics drivers to see if that helps (had disabled this via Group Policy Editor).

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The high cpu usage is expected when deleting 100 folders.

Deleting files shouldnt use much CPU at all.

 

Actually, it made system unresponsive and was forced to quit in task manager.

 

I wasn't deleting any files or folders, but this might be something LSD worth looking into.

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