How many CPU cores has a heroku dyno?

heroku cpu celery cpu-cores
jcatalan picture jcatalan · Apr 9, 2013 · Viewed 11.8k times · Source

I'm using Django with Celery 3.0.17 and now trying to figure out how many celery workers are run by default.

From this link I understand that (not having modified this config) the number of workers must be currently equal to the number of CPU cores. And that's why I need the former. I wasn't able to find an official answer by googling or searching heroku's dev center. I think it's 4 cores as I'm seeing 4 concurrent connections to my AMQP server, but I wanted to confirm that.

Thanks,

J

Answer

ryanbrainard picture ryanbrainard · Jun 12, 2013

The number of CPUs is not published and is subject to change, but you can find out at runtime by running grep -c processor /proc/cpuinfo.

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