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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 made a timestamp hardware that starts when the Linux writes 1 to it and i get the value when i write 2.

The value between a read/write acessing a mutex is 2ms.

Is that high?