Richard said:
I'd appreciate a description of download manager programs: what do they
do? Why do people use them?
They are very useful if you have a good connection to the net, but the
net itself is very slow in your country, if you live in China, for
example.
The downloadmanager creates 5 different channels through the slow net,
and your download speed comes closer to the possible speed of the
connection you have.
I only use a download manager for very large files, 100+MB.
I use Download Express and let it use 4 threads.
I use it to be able to see what happens more than because I gain any
speed.
But sometimes there is a very slow server, so I gain from a download
manager.
The worst case I have experienced was when trying to download a linux
version which they offer as download but don't want people to download,
they want to sell a CD instead. Their server lowered the speed step by
step until it stood practically still.
Then I raised the number of threads in DE to 16 and got it downloaded
at last.
To use 16 threads is very uncivilized, and stupid in most cases,
because you block download channels for others, and you don't gain
anything from more threads than 3-4, because of the overhead in putting
these parts back together again and administering the whole procedure.
For all other files I use the download manager in Opera.
All browsers nowadays have resume (when the server allows it) so you
don't need a download manager to the get resume possibility.
Using a dlmanager with multiple threads can get you banned on some
servers.
Some server owners dislike it very much when one person takes up all
the capacity of the server, making it unavailable for others.
When I tried to use 4 threads the other day the server only allowed one
thread, and this may become more common in the future.