wazo-webhookd memory usage investigation (aircall)

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.