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Latency, from a general point of view, is a time delay between the cause and the effect of some physical change in the system being observed. Lag , as it is known in gaming circles , refers to the latency between the input to a simulation and the visual or auditory response, often occurring because of network delay in online games.
Graphical depiction of contributions to network delay. Network delay is a design and performance characteristic of a telecommunications network.It specifies the latency for a bit of data to travel across the network from one communication endpoint to another.
RTT is a measure of the amount of time taken for an entire message to be sent to a destination and for a reply to be sent back to the sender. The time to send the message to the destination in its entirety is known as the network latency, and thus RTT is twice the latency in the network plus a processing delay at the destination. The other ...
Latency (engineering), a measure of the time delay experienced by a system Latency (audio), the delay between the moment an audio signal is triggered and the moment it is produced or received; Mechanical latency
The speed of light imposes a minimum propagation time on all electromagnetic signals. It is not possible to reduce the latency below = / where s is the distance and c m is the speed of light in the medium (roughly 200,000 km/s for most fiber or electrical media, depending on their velocity factor).
Performance engineering within systems engineering encompasses the set of roles, skills, activities, practices, tools, and deliverables applied at every phase of the systems development life cycle which ensures that a solution will be designed, implemented, and operationally supported to meet the performance requirements defined for the solution.
The time to switch between two separate processes is called the process switching latency. The time to switch between two threads of the same process is called the thread switching latency . The time from when a hardware interrupt is generated to when the interrupt is serviced is called the interrupt latency .
The definition of latency is more or less correct. It is the total time, including the startup time. The definition of throughput is not. Throughput is the amount of work done (e.g., bits transmitted over a network) in a given amount of time, not just the number of actions.