7

Recently I have downloaded a game patch from a torrent. The total patch size was ~528 MB and the torrent has shown 235 MB as "wasted", with 0 hashfails. Some other things I remember about the download:

  • my client is uTorrent 2.2.1
  • While downloading, there were ~250 peers connected, the torrent had ~70 seeds.
  • My download speed was limited to 50 kB/s

When searching documentation to learn what "wasted" means, I have found a following mention in the uTorrent documentation:

In many cases, this is an indication that the swarm you are connected to is fake or poisoned and set up by some anti-P2P organization. ... Another source of hashfails may be your router.

I am not sure I understand this correctly, but it seems that the fact I have no hashfails at all does not match the situation described.

  • What can be a source of wasted data when there are no hashfails?
  • Is this something to worry about, and if it is, what can be done to improve it?
Suma
  • 1,484

3 Answers3

7

When you download from torrents your client requests blocks of data from multiple peers. Usually the first to reply gets used. If others also reply with the block that data is most often discarded, or wasted. It's nothing to worry about and is part of the normal operation of bittorrent.

Majenko
  • 32,964
0

I was facing the same problem. For me changing the following setting in Preferences-->Advanced helped

bt.prio_first_last_piece  false

It was true in my case which probably resulted in being supplied the first and last piece by many connections ending up in wasted data.

I found this suggestion here utorrent forum - i-need-an-experts-advice-about-wasted-data

Fear
  • 101
0

Man, I found a solution.. Just limit the number of peers connected to your Clint at that particular moment. Go to settings-->Preferences-->Bandwidth--> and limit the number of peers to 2 or 3 as per your convince In --> Maximum number of connected peers per torrent It will stop more peers receiving your request and hence save your wasted data ...

PRAKHAR BAISAKHIYAR
  • 1