Can/do ISPs traffic shape on torrent size?

[ET-Bay]

Can they? a 700MB file downloads with full bandwidth on my 256kbps↓ 64kbps↑ connection but a 1GB+ torrent, it goes up to full bandwidth for 5 mins then drops to 9kB, then goes up to 19kB and then drops again giving an average of 14-15 kBps. its like a pattern 30>10>20>10>20>30>..* seeds/peers are no problem, P:40 of 105 connected (0 in swarm) S: 9 of 23 connected (0 in swarm). and this happens on every file 1GB+. If i stop the 1GB+ file and start a 700MB one, jumps straight up to 30 and stays there. Upload is limited to 5kB any more and it acks

traffic shaping or is it the small connection?

[schnurlos]

When you limit your upload to 5kB, your download is limited too, min. is 6kB for that. Perhaps that 700MB's are well seeded (public torrents or test torrents)?

[ET-Bay]

nope, they're not public or test torrents, and the individual torrent's upload is set to

5kB - global upload is 0 unlimited.

[jewelisheaven]

Well there have come workarounds made for some ISP traffic shaping in the pre-beta 1.8 (found here)

I'm not sure about them automatically being able to tell the SIZE of the file you are downloading, unless you triggered some sort of global-connections-limiting since the smaller torrent had a smaller swarm?

[ET-Bay]

hmmm... maybe - I too thought how they could be getting the file size and tried deleting the trackers, DHT got the peers, kept it running overnight but no difference. maybe i should have tried this before when first adding the torrent. but can they know the files size when utorrent updates the tracker?

[jewelisheaven]

Nope tracker announces don't include file info; only client related info like total up, total down, your ip, your port.

[ET-Bay]

Alright. Thanks