View ping times between WonderNetwork servers. This is known to be 1126 feet per second at standard temperature and pressure. WonderNetwork operates a global network of servers and leverages them to provide network testing solutions. This represents the audio cursor we’ll call this X. Track the number of seconds of audio you’ve submitted to Deepgram. Calculating Total Latency To calculate total latency: Measure amount of audio submitted. In this example, the person is standing 500 feet from the source speaker. To calculate transcription latency, you must first calculate total latency and then subtract non-transcription latency. The following example outlines how to calculate a speaker delay.įirst, determine the distance from the speaker. Speaker delay is a measure of the total time it takes sound to travel from a speaker to a certain location. This determines the time it takes the sound from the speaker to reach the person. To calculate the speaker delay, divide the distance from the sound source by the speed of sound. This is equal to 1126 feet/second at sea level and standard temperature.The following formula is used to calculate a speaker delay. The line which needs to be added to log4j2.Enter the distance from the speaker in feet and the speed of sound into the calculator to determine the speaker delay. Some extra information can be obtained from the JMeter log file, if you enable debug logging on protocol level you will see timestamps for all the events in the log: So TTLB minus TTFB should give you the time to transfer the response from server to JMeter and given you have at least 2 samplers with different response size you can figure out the network throughput for a single byte. The JMeter time should be closer to that which is experienced by a browser or other application client. Protocol analysers (such as Wireshark) measure the time when bytes are actually sent/received over the interface. Thus the time includes all the processing needed to assemble the request as well as assembling the first part of the response, which in general will be longer than one byte. JMeter measures the latency from just before sending the request to just after the first response has been received. JMeter does not include the time needed to render the response, nor does JMeter process any client code, for example Javascript. JMeter measures the elapsed time from just before sending the request to just after the last response has been received. If you want to measure the time which takes the request to travel from the system under test to JMeter just subtract Latency from Elapsed time and that should be it.Įlapsed time.
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