Beginners • Memory access time Pi5

Hi. I am using Pi5 recently.
I was doing some simple tests for evaluating processing speed. The results I got can be summarized as following :

read/write from/to file (so on SD card) : around 330ns/byte
copy from variable to another variable (so SDRAM or equivalent) : around 330ns/byte.

I did the tests with block of approx 25MB and 250MB in order to optimize the time transfer and to have more accuracy on the measurements. I got the same results for the two sizes.

I would appreciate some expert comments here.
Also, I am certainly doing things wrong somewhere because RAM access "should be" ten time shorter....

Statistics: Posted by Paul B65 — Sat Jul 27, 2024 3:18 pm

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