Memory Not Auto-Updating in Ratel UI

[Ayush-Bajpai47]

In the Cluster Management tab of the Ratel UI, the memory metrics are not updating automatically.
Is this an expected behavior, or do we need to provide any additional configuration to enable automatic memory updates?

[matthewmcneely]

I'm assuming you're taking about the tablet sizes? Unfortunately Dgraph is unable to calculate exact sizes of predicates -- the reported values are estimations. Some background: #5408

[Ayush-Bajpai47]

Thank you for the prompt response. Could you please clarify how these values are refreshed? Is there any configuration required to ensure that Ratel continuously monitors the tablet size, or is there an existing mechanism/configuration that periodically refreshes these values?

[matthewmcneely]

The problem is not in Ratel; it's in Dgraph. Because of the intricacies of how Dgraph splits the storage of scalars and non-scalar data, along with other factors like compaction timing, the values provided by the cluster with regard to disk consumption are only estimates. If you're concerned about resource consumption, it's best to go to the hardware for answers.