Dear Team,
We are using the compact command inorder to reduce the storage space of data and index. 

As we have upgraded MongoDB version from MongoDB-3.4.0 to MongoDB-3.6.17.

We observed that the command compact execution time is more with MongoDB-3.6  and it took very less time with MongoDB-3.4.

We need your Support to confirm that the execution time for compact command is more with MongoDB-3.6.

Below are the environment details

1. OS: Windows 10, architecture: "x64", 
2. Platform: "Java/AdoptOpenJDK/11.0.6"
3. mongodb Journals are enabled by default
4. Mongod server version: db version v3.6.17

Kindly confirm this.

Thanks & Regards

Rammohan