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Altera_Forum
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15 years ago

Timing analysis of the I/O processes

Hello i have a device driver that comunicates with an onchip mem. I need to see how much time it takes to read and write from the onchip mem. I've put several printk's with timestamp to debug how...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

I am doing those calls on userspace (calling a device driver of course)

Therefore i supose there is a lot of scheduler trouble in the userspace and stuff like that..

I did the test 1000 times, my best result was 300uS, my worst was 218ms and the average was 30mS