RTT in Kopano-stats. What does it mean?

[genz]

Hey Guys,
I am creating a system to monitor our kopano cluster using dashboards. I am wondering about the meaning of the parameter rtt that the kopano-stats --top command prints out. What does it mean/represent?

Thanks

[robing]

@genz ,

The RTT(Round Trip Time) is the complete time that a request takes to get a response from the server.

[genz]

hey @robing,
I am monitoring the RTT value given by the kopano-stats script:

• Our cluster has been up for 6 weeks and 3 days.
• The avarage RTT value is: 11.5 ms
• The highest RTT value we registered is: 3 795 ms

To sum up: sometimes we see several spikes in the RTT value. These spikes can reach very high values. We do not have any clue about why this is happening.

My questions are:

• Is this normal?
• Is a behaviour you would excpect or we need to change something in our setup?

Thanks