profiling-demo

Based on Dave Cheney's profiling exercise from GopherCon 2019

Two little demos

• Simple word count app: words_test.go.
  • Hint 1 - syscalls can be slow, try CPU profiling.
  • Hint 2 - Once you've fixed the CPU usage, try using the memory profiler to see if there's any stray memory allocations.
• Mutex profiling: mutex_test.go.