"memory stats" dataset.bytes changes depending on interface access

[chil L1n]

Hi,

I ran into the following issue while trying to measure the amount of memory that my inserted dataset uses.

I'm using redis v6.0.8 (on Ubuntu 20.04)

When I connect to a clean instance with redis-cli and issue "memory stats" I get the following value:

23) "dataset.bytes"

24) (integer) 46966

If I connect to the same redis server instance with another redis-cli and issue the same command I get (both redis-cli instances give this same value now):

23) "dataset.bytes"

24) (integer) 50956

When I disconnect the second redis-cli and run "memory stats" in the first redis-cli I get:

23) "dataset.bytes"

24) (integer) 46966

Conclusion, the dataset.bytes value appears to depend on the interface usage which is not to be expected given the explanation of dataset.bytes in the documentation.

I have two questions:

1. What's the best method to measure memory consumption of inserted data?

2. I consider this issue with "memory stats" a bug. How should I report it?

Thanks,

chillin