Return the CPU time taken by the python process and its child processes.
时间: 2024-04-08 17:30:48 浏览: 20
To measure the CPU time taken by a Python process and its child processes, you can use the `resource` module in Python. Here's an example:
```python
import resource
import os
# Start measuring CPU time
resource.setrlimit(resource.RLIMIT_CPU, (1, resource.RLIM_INFINITY))
# Run your Python process or child processes here
# Get the CPU time
usage = resource.getrusage(resource.RUSAGE_CHILDREN if os.name == 'posix' else resource.RUSAGE_SELF)
# Print the CPU time
print("CPU Time (seconds):", usage.ru_utime + usage.ru_stime)
```
The `resource.getrusage()` function returns a structure `usage` that contains information about resource usage, including CPU time. The `usage.ru_utime` represents the user CPU time, and `usage.ru_stime` represents the system CPU time. By summing them up, you can get the total CPU time taken by the process and its child processes.
Note that the method to retrieve CPU time may vary depending on the operating system. The example provided above works for Linux/Unix-based systems. For Windows, you can use the `psutil` library to retrieve similar information.