With a simple bash script, I’ve monitored the entropy in /dev/random, the entropy of the Linux kernel entropy pool. Note however that the way I’ve done it, it lowers the entropy’s pool level by a few bits at every entropy’s level check. So that I’ve limited the entropy checking at a frequency of 1 measurement every 2 seconds, during 6000 seconds (1 h 40 mins).
Here’s a quick summary of the data obtained:
Min. : 728.0
1st Qu.: 929.0
Median : 986.0
Mean : 982.3
Here’s a histogram and a plot of the entropy pool level in function of time: