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I need to use MATLAB in realtime, but when I go to the Task Manager and try to change it, it's giving me an error:

Unable to set Realtime priority. The priority was set to High instead.

I tried to do so with other applications, the result is the absolutely the same.

I am using Windows 7 Home Edition (Retail).

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Do you have system admin privileges? –  matcheek Oct 24 '12 at 14:06
    
It's not asking me for any... –  ScReYm0 Oct 24 '12 at 14:11
    
Are you just trying to eke out all of the performance you can on MATLAB, or does your application require real time processing? If it's the latter, you may have to look into specific OS extensions that address this, as the scheduling on Windows is just a recommendation to the OS. –  jonsca Oct 24 '12 at 17:36
    
My application is for Realtime, but windows is not putting my app on 1st place, but if this happens out of testing it can be catastrophic... –  ScReYm0 Oct 24 '12 at 18:20

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