The present invention relates to a method for determining a network delay, on a network having a first client and at least one second client, comprising the steps of time synchronizing the first client and the second client, performing an action by the first client and capturing the action and its corresponding timestamp in a first log file, capturing a reaction of the second client caused by the action of the first client and its corresponding timestamp in a second log file, and determining the network delay by computing the time difference between the timestamp of the reaction and the timestamp of the action causing the reaction through comparison of the second log file with the first log file.