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This article mainly introduces python how to limit CPU and memory usage, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let Xiaobian take you to understand.

Limit "CPU" and memory usage

If you do not want to optimize the program's memory or CPU usage, but want to directly limit it to a certain number, Python also has a corresponding library that can do this:

Import signal import resource import os # To Limit CPU time def time_exceeded (signo, frame): print ("CPU exceeded...") Raise SystemExit (1) def set_max_runtime (seconds): # Install the signal handler and set a resource limit soft, hard = resource.getrlimit (resource.RLIMIT_CPU) resource.setrlimit (resource.RLIMIT_CPU, (seconds, hard) signal.signal (signal.SIGXCPU, time_exceeded) # To limit memory usage def set_max_memory (size): soft, hard = resource.getrlimit (resource.RLIMIT_AS) resource.setrlimit (resource.RLIMIT_AS, (size) Hard))

We can see that in the code snippet above, there are options to set both the maximum CPU run time and the maximum memory usage limit. When limiting the running time of CPU, we first get the soft limit and hard limit for that particular resource (RLIMIT_CPU), and then set it using the number of seconds specified by the parameter and the hard limit previously retrieved. Finally, if the running time of the CPU exceeds the limit, we will signal that the system exits. In terms of memory usage, we retrieve the soft and hard limits again and set it with "setrlimit" with the "size" parameter and the hard limits we retrieved earlier.

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