SUPPORT THE WORK

GetWiki

wire speed

ARTICLE SUBJECTS
aesthetics  →
being  →
complexity  →
database  →
enterprise  →
ethics  →
fiction  →
history  →
internet  →
knowledge  →
language  →
licensing  →
linux  →
logic  →
method  →
news  →
perception  →
philosophy  →
policy  →
purpose  →
religion  →
science  →
sociology  →
software  →
truth  →
unix  →
wiki  →
ARTICLE TYPES
essay  →
feed  →
help  →
system  →
wiki  →
ARTICLE ORIGINS
critical  →
discussion  →
forked  →
imported  →
original  →
wire speed
[ temporary import ]
please note:
- the content below is remote from Wikipedia
- it has been imported raw for GetWiki
{{cleanup|date=November 2011}}In computer networking, wire speed or wirespeed refers to the hypothetical peak physical layer net bitrate (useful information rate) of a cable (consisting of fiber-optical wires or copper wires) combined with a certain digital communication device, interface, or port. For example, the wire speed of Fast Ethernet is 100 Mbit/sRobert Breyer, Sean Riley, Switched and fast Ethernet: how it works and how to use it, 1995 also known as the peak bitrate, connection speed, useful bit rate, information rate, or digital bandwidth capacity. The wire speed is the data transfer rate that a telecommunications standard provides at a reference point between the physical layer and the datalink layer.Atlantic, Encyclopaedia of Information Technology

Related terms

The wire speed should not be confused with the line bitrate, also known as gross bit rate, raw bitrate or data signalling rate, which is 125 Mbit/s in fast Ethernet. In case there is a physical layer overhead, for example due to line coding or error-correcting codes, the line bitrate is higher than the wire speed. Note also that the theoretical channel capacity of the cable may be much higher, especially if the cable is short, but this is not utilized in the communication standard. The channel capacity depends on the physical and electrical properties of the cable, while the wire speed also depends on the connection protocols.The wire speed may also refer to maximum throughput, which typically is a couple of percent lower than the physical layer net bitrate in wired networks due to datalink layer protocol overhead, data packet gaps, etc., and much lower in wireless networks.

Communicating "at wire speed"

The term at wire speed, or the adjective wire speed, describes any computer system or hardware device that is able to achieve a throughput equal to the maximum throughput of the communication standard. This requires that the CPU capacity, bus capacity, network switching capacity, etc., be sufficient. Network switches, routers, and similar devices are sometimes described as operating at wire speed. Data encryption and decryption and hardware emulation are software functions that might run at wire speed (or close to it) when embedded in a microchip.The wire speed is rarely achieved in connections between computers due to CPU limitations, disk read/write overhead, or contention for resources. However, it is still a useful concept for estimating the theoretical best throughput, and how far the real-life performance falls short of the maximum.The term wire speed (or wirespeed) is considered a non-formal language term.{{clarify|date=March 2014}}

References



- content above as imported from Wikipedia
- "wire speed" does not exist on GetWiki (yet)
- time: 12:09pm EDT - Fri, Aug 23 2019
[ this remote article is provided by Wikipedia ]
LATEST EDITS [ see all ]
GETWIKI 09 JUL 2019
Eastern Philosophy
History of Philosophy
GETWIKI 09 MAY 2016
GETWIKI 18 OCT 2015
M.R.M. Parrott
Biographies
GETWIKI 20 AUG 2014
GETWIKI 19 AUG 2014
CONNECT