In order to apply these tips you need to know your maximum
up- and download speed. You can test your bandwidth over
here (stop all download activity while testing). Also make
sure that you applied the tips provided in our previous posts.
Note that there’s a huge difference between kb/s
(kilobits/second) and kB/s (kilobytes/second). To be
precise, kB/s = kb/s divided by 8. In this tutorial we use
kB/s (like most torrent clients do). This means that you
might need to calculate your max speed in kB/s yourself if
the speedtest only gives you the results in kb\s (so divide by
8 then).
Settings 1-4 can be found in the options, settings or
preference tab of most torrent clients.
1. Maximum upload speed
Probably the most important setting there is. Your
connection is (sort of) like a pipeline, if you use you
maximum upload speed there’s not enough space left for the
files you are downloading. So you have to cap your upload
speed. Use the following formula to determine your optimal
upload speed…
80% of your maximum upload speed
So, if your maximum upload speed is 40 kB/s, the optimal
upload rate is 32kB/s
But keep seeding!
2. Maximum download speed
Although setting your maximum download speed to
unlimited may sound interesting, in reality it will only hurt
your connection. If you still want to be able to browse
properly, set your maximum download speed to:
95% of your maximum download speed
so if your maximum download speed is 400 kB/s, the
optimal download speed is 380kB/s
3. Maximum connected peers per torrent
Yet another setting that you don’t want to max out. I
experimented quite a lot with the max connected peers
settings and came to the conclusion that both high and low
number hurt the download speed of a torrent. The following
setting worked best for me.
upload speed * 1.3
so, if your maximum upload speed is 40 kB/s, the optimal
amount of connected peers per torrent is
40 * 1.3 = 52
I didn’t noticed a difference for fast or slow connections here.
4. Maximum upload slots
1 + (upload speed / 6)
So, if your maximum upload speed is 30 kB/s, the optimal
number of upload slots is
1 + (30 / 6) = 6
5. More tips
A. Seed.
Downloading speeds will be sub-optimal for everyone unless
everyone plays their part and seeds. Private tracker sites are
a great example of how the overall speed of the swarm
increases when everyone is seeding and downloading in
equal measure. So, play your part in seeding and tell others
to as well.
B. Be connectable.
Make sure you’re not “firewalled” by opening up your
incoming ports or by enabling UPnP in your router,
otherwise you’ll be leaving bandwidth on the table.
C. Select the right torrents.
Your download will be faster if you choose to download a
torrent where there is a good balance of seeds and peers. For
instance, Vuze ranks its search results according to the
number of seeds and peers to make this easier.
D. Be realistic.
Check the swarm average and if you’re already above
average, then you just need to be patient. If you’re below
average, go back and check some of these other things I’ve
mentioned.
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