Monit reports diffent memory usage

[Sorrow]

Hi there,
i use pm2 in both local and on a ec2 instance and i have a very weird memory consumption difference between those two (using same node v, same modules and same v of modules and so on on both). When using on prod, pm2 monit reports without any client connected, 40MB at start and increases 400kb per request. On local i am very far from those numbers (about 40kb at start, nothing really noticeable at each request). At first, i was thinking it could be a huge mem leak but i don't really know how it could be since i am not manipulating huge arrays or files (and null-fying any thing i can).
Maybe someone could enlighten me on this ?
Thanks.

e: oh forgot to mention i am running osx in local, maybe the difference is related to node-usage not being updated ?

[Sorrow]

It seems node-usage 3.5.7 was the culprit, changed for 3.5.8 from #73 and it shows more coherent stats.

e: btw the memory leak was because i was still using memorystore and didn't use node env to get notified about it when launching in prod.