zorbas Posted May 22, 2008 Share Posted May 22, 2008 When I download anything from anywhere, with windows Xp AND with windows Vista.. I have noticed something strange. Why is it that I am downloading at 1.6mb/s and it shows that I am using 15% of my 100Mbps connection? see the attached photo for more details. Link to comment Share on other sites More sharing options...
fairyprincess Posted May 22, 2008 Share Posted May 22, 2008 (edited) When I download anything from anywhere, with windows Xp AND with windows Vista.. I have noticed something strange. Why is it that I am downloading at 1.6mb/s and it shows that I am using 15% of my 100Mbps connection? see the attached photo for more details.Your mixing up to terms MB/s and Mb/s they are diffrerent by a factor of 8.1.5 MB/s is shown as the speed ur downloading , that is equal to 12Mb/s which is 12% of your 100Mb/s connection to your rotuer (NOT to your ISP), which is then connected to your ISPThere will then always be other bits of trafic flowing which will effect the speed a bit, but there is nothing strange happening here Edited May 22, 2008 by fairyprincess Link to comment Share on other sites More sharing options...
zorbas Posted May 22, 2008 Author Share Posted May 22, 2008 When I download anything from anywhere, with windows Xp AND with windows Vista.. I have noticed something strange. Why is it that I am downloading at 1.6mb/s and it shows that I am using 15% of my 100Mbps connection? see the attached photo for more details.Your mixing up to terms MB/s and Mb/s they are diffrerent by a factor of 8.1.5 MB/s is shown as the speed ur downloading , that is equal to 12Mb/s which is 12% of your 100Mb/s connection to your rotuer (NOT to your ISP), which is then connected to your ISPThere will then always be other bits of trafic flowing which will effect the speed a bit, but there is nothing strange happening hereso technically i can only transfer around 15MB/s across my network? is that the truth? Link to comment Share on other sites More sharing options...
cluberti Posted May 22, 2008 Share Posted May 22, 2008 so technically i can only transfer around 15MB/s across my network? is that the truth?If you're talking about 2 machines transferring on a 100Mb network, the max you'd get between the two is 12.5MB (25MB if it's full duplex, theoretically).However, assuming you're using the TCP/IP protocol (default in Windows), and even if your network runs at 100% efficiency, for each Mb of speed you'll see anywhere from 20Kb to upwards of 128Kb TCP overhead depending on the network config and potential changes / tweaks that are (or are not) on your machine. At 100Mb/sec, you should expect on a well maintained, good network to see upwards of 4-12Mb/sec of that be simple TCP overhead depending on the machines and network equipment at each end.And those of us who have done this for a living know that those are good numbers, and normal operations sees higher overheads due to other issues as well - seeing over 10MB/sec transfer on a 100Mb network means you're getting great transfer speeds (of course gigabit networks will provide much faster throughput, but you will also see more frame and TCP overhead...). Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now