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Interrupt Service Routines (ISR) Documentation

Hi,

 

I am looking for some documentation regarding ISR (interrupt service routines) in Real Time Systems.

 

My focus is to detect which processes can cause the CPU ISR load to rise.

 

I could verify that Serial Communication can be one of the issues, and DMA FIFO (FPGA - RT) also can increase that.

 

Does anyone have any documentation on what drives these interrupts in the LabVIEW Real Time? I couldn't find any.

 

Regards,

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