Digital & Data

Throughput

Definition

Throughput is the actual rate at which data is successfully transferred over a network or system in a given time period, measured in bits or bytes per second.

Explanation

Throughput is always less than or equal to bandwidth due to protocol overhead, packet loss, retransmissions, and congestion. A 1 Gbps Ethernet link typically achieves 940–960 Mbps of usable TCP throughput. Disk throughput and network throughput are both critical bottlenecks in data center design. The difference between advertised bandwidth and measured throughput is a common source of consumer frustration.

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RELATED TERMS

Bit and Byte

A bit is the smallest unit of digital information, representing a 0 or 1; a byte is a group of 8 bits, capable of representing 256 distinct values.

Binary Prefix

Binary prefixes (KiB, MiB, GiB) denote powers of 1024, in contrast to metric SI prefixes (KB, MB, GB) which denote powers of 1000.

Bandwidth

Bandwidth is the maximum data transfer capacity of a communication channel, typically measured in bits per second (bps, Mbps, Gbps).

Latency

Latency is the time delay between a data packet being sent from a source and received at its destination, typically measured in milliseconds (ms).

Clock Speed

Clock speed is the frequency at which a processor executes cycles, measured in hertz (Hz), with modern CPUs operating in the gigahertz (GHz) range.