I'm trying to pinpoint a problem on one of my computers: when a PC (Win-7) is downloading (be it p2p or other) it is slowing down the whole network for the other computers, even when downloading a low speeds 60kb/s when we have 10mb/s...
It's so bad that I can hardly load a page, when removing the download (on the PC) the speed on the other computers goes up INSTANTLY, done the test multiple times and the one computer is always the culprit. What could be the problem?
If all the computers are using wireless, that's the reason.
What you have to remember is that wireless access is serialized. It's no different than a walkie-talkie. Whenever someone is using the wireless frequency, all other wireless users have to wait until that wireless user ends their communications before the next user gets access. The fact that any given wireless user is consuming only a small portion of the available bandwidth is irrelevant. At any given moment that bandwidth is only available to the current wireless user! IOW, the battle is NOT for bandwidth, but wireless access time! Ironically, you’d be better off if the download PC was using MORE bandwidth and thus reducing its total access time.
That's why except for the convenience, in every other respect (performance, complexity, security, efficiency, etc.), wireless sucks.