Hi Philip, >> the latency measures the time difference between the *time the request was created* and the response received >> I believe it is *between the time send() was called*, and the time the producer receives the response from the broker.
I believe this is not right as if we see <https://developer.confluent.io/learn-kafka/architecture/producer-hands-on/?_ga=2.143024061.907256740.1667543050-19124442.1666163656&_gac=1.54193882.1667550950.CjwKCAjw8JKbBhBYEiwAs3sxN21FphL9sHjqJWmlOYnVw9d474r-z9r8Hs1b3B5YbyYdxBOgrBxIORoCY-AQAvD_BwE#:~:text=1406.273-,request%2Dlatency%2Davg,-43.292> : [image: image.png] >> the producer doesn't immediately transmit the sends when send() is called, the requests can be batched depending on your configuration. if it was like the way you mentioned, then it implies it includes the producer buffer time also as you mentioned then *request-latency-avg* should be *always greater* than *request-queue-time-avg. *But as per the results above we can see in multiple cases, it is actually vice-versa. Please add more thoughts to this and let me know what you think. Thanks, T
