Vault update from 1.8.2 to 1.10.2: High memory usage (400 MB to 8 GB)

I am running Vault in k8s using the official helm chart. I updated from 1.8.2 to 1.10.2 and I am seeing a drastic increase of memory usage that has not dropped since the upgrade. Memory usage of all pods went from ~400MB to 8GB (!)

We are using mostly k8s auth, but also some userpass, JWT and approle. Configwise nothing really changed during the upgrade. Afterwards we enabled MFA, but also before that memory was really high.

Any idea what is happening here?

Did you also migrate your storage to Integrated storage? Otherwise I’d start checking to see if your token generate has increased dramatically.