Methods and systems for incremental calculation of latency variation

A network configured to calculate local latency variations in an incremental manner, comprising:

• first and second switches comprising first and second output ports, respectively;
• and
• a latency variation calculator configured to update a first local latency variation of a first streaming session at the first output port;
• the latency variation calculator is further configured to identify a relationship that:
• the first streaming session and a second streaming session are passing through the second output port, and the first streaming session is passing through the second output port after passing through the first output port;
• the latency variation calculator is further configured to update a second local latency variation of the second streaming session at the second output port, based on the relationship;
• wherein the updated second local latency variation is calculated based on the updated first local latency variation.