Use Gentle Velocity to Track down Your Server

Equipment to Track down Your Server

The superior news is you do not have to have a super precise examination, as a substitute, a somewhat precise alternative is quickly obtainable. All you have to have is a minimal knowledge of the pace of mild and optical fiber! Essential pieces of info:

one. Gentle travels at roughly 186,000 miles per 2nd or 186 miles per millisecond in a vacuum.
two. Fiber has a refractive index of close to one.46.
3. The modern “Internet” is fiber when working with long distances.

In circumstance you have not discovered, these are not specific calculations.

The next phase in your finding out system is to understand a “ping” examination. You most likely have the “ping” resource on your computer already. “Ping” is a uncomplicated system made use of to verify network connectivity and general performance. It will deliver a examination packet of info out to a specified area or IP and time how long it normally takes for that area or IP to answer. It will report that back again to you in “milliseconds.” We have instructions if you have never ever made use of this before.


Just after you have completed the ping tests, just consider the the resultant milliseconds and multiply it by the pace of mild in fiber. This will give you the spherical trip mileage. Divide by two for the just one way length:

Taken from the average end result of the Linux example from earlier mentioned for a ping from Newark, Delaware to Los Angeles, California

seventy seven.two Milliseconds * 186 miles per millisecond / one.46 refractive index = 9835 miles spherical trip or 4918 just one way.

Hold out a millisecond, traveling from Newark, DE to Los Angeles, CA is not almost 5000 miles! Straight line length is about two,350 miles. The shortest length by car from Google is 2700 miles. In this circumstance, since we have a superior plan of what metropolitan areas the bodily route goes as a result of, it is about 3,two hundred miles. So what provides?

Other Variables

There are a bunch of outside the house components that impact the “distance”:

one. The examination packet must be encoded and decoded by your computer and the concentrate on computer.
two. Gear like switches and routers (check out a “trace route“) must interact with your packet to get it to it’s place.
3. Not all of the route will be in excess of fiber. Most of it will be, but particular sections this sort of as your own Internet relationship, will not be.
4. Life isn’t fantastic.

Attempt It Your self

However, this is a good way to look at “distances” to track down your server site. Attempt it out on different web-sites and look at it to to our East Coastline info center (suburban Washington, D.C.) and our West Coastline info center (Los Angeles, California). Ping the pursuing to see the variation: