Method, system and computer program product involving congestion detection in ethernet

A computer program product for providing real-time recommendations, the computer program product comprising:

• a non-transitory computer-readable storage medium for storing instructions for executing a real-time recommendation service, the real-time recommendation service comprising a method of:
• receiving a first data packet having a first data packet send time and a type of data payload each located in an EtherType field of a media access control (MAC) header of the first data packet, wherein the first data packet send time is a time the data packet is sent by a source transmitter;
• subtracting the first data packet send time from a first data packet receive time to yield a first data packet transmission time, wherein the first data packet receive time is the time the data packet is received by a destination receiver;
• comparing the first data packet transmission time to a third time;
• determining whether a difference between the first data packet transmission time and the third time exceeds a threshold value;
• and
• sending a notification of a transmission delay responsive to determining that the difference between the first data packet transmission time and the third time exceeds the threshold value.