The read_rnd_buffer_size system variable is pretty straightforward and there aren't a lot of complex considerations, but this variable can be used to a great performance benefit when set properly. Let Releem
handle the calculations and figure out exactly the correct value, on a per session basis, for read_rnd_buffer_size. Releem takes the guesswork out of MySQL server tuning, to improve the overal MySQL Performance Score
with proven configuration recommendations.