perf

apt install build-essential git flex bison
git clone --depth 1 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
cd linux/tools/perf
make
cp perf /usr/bin

./perf record -p $(pgrep your_graphical_app) -o pout -e cycles:u -a -- sleep 5
./perf report -i pout | grep -c radeonsi_dri.so