What is latency, throughput and degree of concurrency?
chrisapotek asked. How do you define throughput and latency for your test? There is not a simple question, so I have replied with a post. Sustained Throughput I consider throughput to be the number of actions a process can perform over a sustained period of time, between 10 seconds and day. (Assuming you have a quite period over night to catch up) I measure this as the number of actions per second or mega-bytes (MB) per second, but I feel the test needs to run for more than a second to be robust. Shorter tests can still report a throughput of X/s but this can be unrealistic because systems are designed to handle bursts of actively with caches and buffers. If you test one behaviour alone you get a figure which assumes nothing else is running on the system and the limits of these buffers are not important. When you run a real application on a real machine doing other things, they will not have full use of the caches, buffers, memory and bandwidth and you may not get within 2-3x the