I could post the entire test project if this is considered helpful. from app1.tasks import task_fast, task_slow If I execute following from a management shell I see, that one fast task is only executed after the slow task finished. Logger.warning("fast task_slow(delay=30):
#Fasttasks 2 code#
The code of my workers import time, loggingįrom miniclry.celery import app as celery_app The _init_.py of my django project is from. Os.tdefault('DJANGO_SETTINGS_MODULE', 'ttings')Īpp = Celery("miniclry", backend="rpc", broker="pyamqp://")Īpp.config_from_object('nf:settings', namespace='CELERY') My django project's celery.py file is: from _future_ import absolute_import My celery settings are default except: CELERY_BROKER_URL = , The commands, that I execute to start the workers are: celery -A miniclry worker -concurrency=1 -n w2 -Q=fast,slow -prefetch-multiplier 0Ĭelery -A miniclry worker -concurrency=1 -n w1 -Q=fast Is there any way to implement what I want? Is this a documentation bug? Is this an implementation bug? Or do I misunderstand the documentation? However what I observe is, that with a prefetch_multiplier of 1 one task is prefetched and would still be delayed by a slow task. APPRENTICE ELECTRICAL TECHNICIAN TEST (ETT) About the Test There are 40 questions with a maximum time limit of three hours. That setting to 0 will allow the worker to keep consuming as many To disable prefetching, set worker_prefetch_multiplier to 1. You are here: Sqwarq Apps FastTasks 2 FT2 is a troubleshooting utility that provides a number of useful.
#Fasttasks 2 mac#
Thus I'd like to disable prefetch for worker W2. Fasttasks 2 47 The Troubleshooting Approximate Square FastTasks 2 the troubleshooting app for your mac FT2 is a troubleshooting utility that provides a number of useful. 1 celery worker W2 with concurrency 1 that can handle fast and slow tasks.Ĭelery has by default a task prefetch multiplier ( ) of 4, which means that 4 fast tasks could be queued behind a slow task and could be delayed by several minutes.1 celery worker W1 with concurrency 1, that handles only fast tasks.Slow tasks occur less often, but it can happen that 2 or 3 are queued up at the same time. Slow tasks might run for a few minutes but the result can be delayed. There can be many fast tasks in a short time frame (0.1s - 3s), so ideally both CPUs should handle them. Due to RAM limitations I can only run two worker processes.įast tasks shall be executed ASAP.
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