# py-spy > A sampling profiler for Python programs. > More information: . - Show a live view of the functions that take the most execution time of a running process: `py-spy top --pid {{pid}}` - Start a program and show a live view of the functions that take the most execution time: `py-spy top -- python {{path/to/file.py}}` - Produce an SVG flame graph of the function call execution time: `py-spy record -o {{path/to/profile.svg}} --pid {{pid}}` - Dump the call stack of a running process: `py-spy dump --pid {{pid}}`