#!/bin/sh

# investigate good cache usage
sudo perf stat ./main -1

# investigate bad cache usage
sudo perf stat ./main -2

# look at actual instruction and cache statistics
sudo perf stat -e instructions -e cache-misses ./main -1
sudo perf stat -e instructions -e cache-misses ./main -2

# more detailed events like L1-dcache-loads and L1-dcache-load-misses
# may be available on the system (sudo perf list)

# investigate which lines of code cause the problem
sudo perf record -e cache-misses ./main -2
sudo perf report