Demo: Memory You Do Not See Is Working for You¶

The kernel keeps recently read files in memory. Show how much; do not drop it on the machine you are projecting from.

Run¶

free -h

On your own machine, before the lecture, if you want the cold/warm start timings:

sync; echo 3 | sudo tee /proc/sys/vm/drop_caches
time firefox --version
time firefox --version