Aircall have created one subscription with 30 events to listen.
wazo-webhookd uses 400M of ram per process by default, processes number can be between 4 and 11.
We have two things to investigate:
Why celery workers uses same amoung of RAM of wazo-webhookd main process (instead of a couple of megabytes)
Why wazo-webhookd main process uses 400M for only 30 events.