work distribution among workers #503

I have 500 jobs in my queue , worker as non-blocking function to wait for 5 sec. (asyncio.sleep(5)) , when I spawn 3 workers to do the jobs, I see one workers takes most of the work, and 2 other sits idle most of the time. How to make sure all 3 workers picks up job concurrently?

here are my worker configurations
job_timeout = 100
keep_result = 0
poll_delay = 0.5
max_jobs = 50