I'm having a heart attack over my internet connection speeds.

[spidey07]

Originally posted by: Sukhoi
Based on a quick Google conversion, light takes 54 ms to travel 10,000 miles. I believe the US is closer to 3000 miles coast-to-coast. Back when I used to game from Illinois I rarely remember getting west coast pings lower than 75 ms. There is a whole lot of processing overhead to eliminate, no?

speed of light is just part of it. Fiber doesn't transmit at speed of light. I forget off the top of my head...something like 70-80% of it.

Then you have to add in the serialization delay of putting the packet "onto the wire" for each router it passes through plus any processing time/buffer.

There isn't much processing overhead as the routers do most of it in hardware. The packet is already cued up on the egress interface by the time the butt catches up. But that does take time. For home use, the low bandwidth connections they have the serialization delay becomes quite a bit of the latency equation.

 

[Sukhoi]

Originally posted by: spidey07

Originally posted by: Sukhoi
Based on a quick Google conversion, light takes 54 ms to travel 10,000 miles. I believe the US is closer to 3000 miles coast-to-coast. Back when I used to game from Illinois I rarely remember getting west coast pings lower than 75 ms. There is a whole lot of processing overhead to eliminate, no?

speed of light is just part of it. Fiber doesn't transmit at speed of light. I forget off the top of my head...something like 70-80% of it.

Then you have to add in the serialization delay of putting the packet "onto the wire" for each router it passes through plus any processing time/buffer.

There isn't much processing overhead as the routers do most of it in hardware. The packet is already cued up on the egress interface by the time the butt catches up. But that does take time. For home use, the low bandwidth connections they have the serialization delay becomes quite a bit of the latency equation.

Interesting, I figured fiber would be at c.

 

[Hyperlite]

NCSU