![]() ![]() I constructed a fairly simple example of this behavior, shown above. get () else : print 'Job failed: %s %s ' % ( type ( i. join () except KeyboardInterrupt : print 'parent received control-c' pool. apply_async ( pool_function, args = ())) pool. Pool ( 3 ) try : jobs = for i in range ( 6 ): jobs. sleep ( 2 ) return 'Success' def pool_function (): try : return do_work () except KeyboardInterrupt : return 'KeyboardException' def main (): pool = multiprocessing. #!/usr/bin/env python import multiprocessing, os, time def do_work (): print 'Work Started: %d ' % os. To the parent process until all jobs are completed. Second, the KeyboardInterrupt is not delivered The KeyboardInterrupt and call sys.exit, these processes persist and First, while the worker processes can handle ![]() Pool of workers cannot be terminated until all the tasks have been consumed.Īfter some simple experimentation I noticed two key things with the ![]() Multiprocessing module contains a pool class which automatically sets up You’ve previously used python’s threading module. Python’s multiprocessing module is actually quite simple to use, especially if Thus the simplest solution seemed to be utilizing Global Interpreter Lock, or GIL, makes it such that only one of these threadsĬan run “concurrently”. Threads that have the ability to run on different cores concurrently, the Produce no benefit for these CPU bound events. That in python I needed to span multiple processes as multithreading would I was recently working on improving the efficiency of my botnet analysis codeīy utilizing 100% of the CPU resources available to my machine. The Python Multiprocessing Queue and Large Objects. You can read about that in my post titled, While the code listed below will work in most situations,Ĭonsider using sentinels to indicate the end of jobs in your queue rather than Update 8: There is an issue with this code when passing large objects Update 3: Added commentary regarding Georges’s comment about this Update 4: Added post: Python Multiprocessing Pool and ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |