Install gtkperf by entering the following commands in the terminal:
sudo apt update sudo apt install gtkperf
Description:
GTK+ performance benchmark
GtkPerf is an application designed to test GTK+ performance. The point is to create common testing platform to run predefined GTK+ widgets (opening comboboxes, toggling buttons, scrolling text) and this way define the speed of device/platform.
Homepage: http://gtkperf.sourceforge.net/
Version: 0.40+ds-2build1
Section: universe/utils