Network Expansion, Latency

[CarDesinr]

So I want to run an internet connection downstairs to my pc in my bedroom. It will be about 12 feet of cable at most. How much latency is this going to introduce? How much more will there be if I decide to add a network switch?

[ForsakenLive]

not noticeable at all.

[alpenwasser]

It will be about 12 feet of cable at most. How much latency is this going to introduce?

The added latency due to the cable will be negligible. Bits travel along

a networking cable at a significant fraction of the speed of light, signal

travel time will be in the nanosecond to microsecond range.

 

This document (pdf) makes an example for an optical fibre cable of

100 km length, and gets a cable latency of 500 microseconds. Yes,

copper is not the same as fiber, but it will be in a similar area per

length of cable (no ethernet cable will be 100km ).

 

How much more will there be if I decide to add a network switch?

Again, looking at the document linked above, as well as this one

from Cisco, a negligible amount of time. Cisco's white paper

examines 10 GB switches, but again, your numbers should be

in the same region.

 

 

Note: I have not had the time to thoroughly read both documents.

If somebody does and notices that I've made a grave error, feel free

to note that and correct me.

[CarDesinr]

I just want to know for gaming. Playing fps like blacklight.

[alpenwasser]

I just want to know for gaming. Playing fps like blacklight.

 

Think of it like this: With all the cables, routers, modems and switches between

your PC and the gaming server, one additional bit of cable and an additional

switch really shouldn't have a significant impact. If they do, you either have a

really bad cable/switch, or a really, really, really great connection to the gaming

server.

[xXxYOLOxSWAGxXx_420BlazeIt]

So I want to run an internet connection downstairs to my pc in my bedroom. It will be about 12 feet of cable at most. How much latency is this going to introduce? How much more will there be if I decide to add a network switch?

The signal would take roughly 1.82x10^-8 seconds to traverse the cable. Then you just need to add the processing times of the devices on each end.

 

It should be less than 1 millisecond. You wouldnt notice it at all.

[Altecice]

As said above. you wont notice it at all.. CAT5E (Ethernet) is good for anything up to 100 meters in length before you will start to feel any real degradation.