Explain CPU-Bound vs I/O-Bound Work

Explain what CPU-bound and I/O-bound workloads are. Next, contrast the behavior of multithreading, asynchronous I/O, and multiprocessing for each workload type, with particular attention to Python.

Include:

• Ways to identify each workload in real-world scenarios.
• Specific examples.
• The influence of Python's GIL on the decision.
• Which concurrency model suits tasks like web crawling, parsing, and CPU-intensive computation.

Overview: The question assesses comprehension of CPU-bound versus I/O-bound workloads and how they interact with concurrency approaches like multithreading, asynchronous I/O, and multiprocessing in Python, covering the Global Interpreter Lock (GIL) and its relevance to tasks such as web crawling, parsing, and heavy computation.