On Thu, Sep 20, 2012 at 11:12 AM, Rolando Cañer Roblejo <rolando.ca...@cnic.edu.cu> wrote: > Hi all, > > Is it possible for me to put a limit in the amount of processor usage (% > CPU) that my current python script is using? Is there any module useful for > this task? I saw Resource module but I think it is not the module I am > looking for. Some people recommend to use nice and cpulimit unix tools, but > those are external to python and I prefer a python solution. I am working > with Linux (Ubuntu 10.04).
Maximum percentage of CPU used isn't normally something you control. The only way I know of to do it involves having another process monitor the thing you want to control and sending signals to stop and start it (e.g., http://cpulimit.sourceforge.net/). Typically, you instead want to control the priority (so that higher priority apps can easily take more CPU time). That's what nice is for (http://docs.python.org/library/os.html#os.nice). If you want to limit a process in the same way that ulimit does, then the resources module is what you want (http://docs.python.org/library/resource.html#resource.setrlimit). Is there a particular reason that you'd rather have your CPU sitting idle, rather than continuing with whatever code is waiting to be run? I'm having a hard time understanding what problem you might be having that some combination of setting the nice level and imposing resource limits won't handle. -- Jerry -- http://mail.python.org/mailman/listinfo/python-list
