Utorrent tracker updating
In peer-to-peer file sharing a software client on an end-user PC requests a file, and portions of the requested file residing on peer machines are sent to the client, and then reassembled into a full copy of the requested file.
The "tracker" server keeps track of where file copies reside on peer machines, which ones are available at time of the client request, and helps coordinate efficient transmission and reassembly of the copied file.
Private Torrent Trackers features uploading and downloading limit beyond which the user cannot use these trackers.
Being open to all, the Public Torrent Trackers are slower as compared to Private Torrent Trackers.
Private Torrent Trackers features a speeding rule which forces a user to seed back whenever any file is downloaded.
As Public Trackers are open to all, they are not secure as anyone can watch over you, while you are downloading any file.
But sometimes the file you have selected for downloading might have less number of seeds; which makes downloading very tiresome.
The user uploads a message about his/her interest into the specific tracker.
The tracker scans through the database and identifies similar interests, from previous users and connects to them directly.
These two case will be the primary reason for your torrent file to get download at low speed and also remember if your normal download speed is around 1 Mbps or 2 Mbps then there is no way to increase then what your ISP has given to you.
If you have to increase more from what they normal speed has to be provided by ISP they only way to do is to change your internet plan.