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I am running Django using Gunicorn behind Nginx. In one of my installation, when I run the gunicorn process, I keep getting debug output, it's like workers are being created in every second (I assume this because django is loading very slow and note the message "[20205] [DEBUG] 3 workers"). You can check the detail output at this gist In similar setup, I am running 3 more installations without any such issues and respective site loads almost instantly. Any idea why this is happening? Thanks.
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Gunicorn should only need 4-12 worker processes to handle hundreds or thousands of requests per second. Generally we recommend (2 x $num_cores) + 1 as the number of workers to start off with. From threads, The number of worker threads for handling requests.
The suggested number of workers is (2*CPU)+1 . For a dual-core (2 CPU) machine, 5 is the suggested workers value. Gunicorn with default worker class (sync).
Gunicorn process will have 5 threads now. And each thread is capable of serving a request. Hence 5 requests can be simultaneosly served.
¶ Since Gunicorn 19, a threads option can be used to process requests in multiple threads. Using threads assumes use of the gthread worker.
The polling of the workers every second on --log-level debug was introduced in gunicorn==19.2.
Change the log level to info.
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