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py-spy:tldr:01d9d
The command py-spy top --pid ${pid}
runs the py-spy
tool to collect profiling information about a running Python process with a specific process ID (pid
).
Here's what each part of the command means:
-
py-spy
: This is the command for running thepy-spy
tool, which is a sampling profiler for Python that allows you to investigate and analyze the performance of Python code. -
top
: This is an argument forpy-spy
to specify the profiling mode. In this case,top
mode is used, which means it will continuously sample the Python process and display the most active functions in real-time. -
--pid ${pid}
: This is another argument forpy-spy
to specify the process ID of the Python process you want to profile.${pid}
is a placeholder for the actual process ID, which needs to be replaced with the actual number.
By executing this command, py-spy
will attach to the specified Python process and sample its call stack periodically. It will then collect and display information about the most CPU-intensive functions, indicating which functions are taking up the most processing time within the Python process.