Why does downloading from torrents wave speed up to a maximum and then drop to zero?

Question

bittorrent

When downloading from torrents, the speed rises in waves to a maximum and drops to zero. At the same time, the speed in all browsers drops to almost zero, the pages do not load at all. Tried to turn off the browser, the problem remains. The speed on average rises to 8 mb / s and then drops to 0.5 kb / s. The problem appeared when reinstalling Windows from 7 32 bit to 7 64 bit. Moreover, if I go to the same torrent from a hundred, then the speed is less than 5 mb / s does not fall at all. There are seats for sure.
The most common solution to this problem on the Internet is to set the value of uTorrent bt.transp_disposition = 5 in the torrent settings. I tried it did not help. Who has any advice?

Answer 1

Useful guide . set bt.transp_disposition to default.
Since the speed can remain at the same level, it means that it is not a screw or a cache. The number of half-open connections is a nightmare win XP, it has nothing to do with it. But where the legs grow from that council is understandable :)
Questions: do you connect via ADSL? What is the version of uTorrent? Have you tried another torrent client or version ?
Perhaps your provider is greedy and filters the channel, cutting off traffic (shaping policy). And the rocker can use µTP, which gives a big profit and it has a bad effect. Set
net.utp_dynamic_packet_size to false .

...in uTP there is a mechanism for adapting the torrent client to the load of the user's channel, and if uTorrent "sees" that the packets have begun to go too slowly, it reduces their size. In practice, this approach often led to an overload of network equipment, both on the user side and on the provider side.

© rutracker.org
If it doesn't help, then in the speed settings, uncheck the "Manage [uTP] speed" checkbox.

Answer 2

Has the router been changed?
Perhaps the problem is in the number of sockets, but on win7 there seems to be no limit.
Is the firewall enabled?

Answer 3

I had such a problem, took another router - everything works fine.

Answer 4

My advice to you - throw out the 3rd version of the mouse, and put, for example, 2.2.1.
The 3rd version is very crooked :( I speak from my own experience, when the client works constantly on the server, in order to fine-tune it, you can also look at the corresponding topics on the same root tracker.
bt.transp_disposition return to default, this will not help. I advise you to read the topic on fine-tuning on the root tracker... Just an
additional question, but you don't accidentally see the message "Disk overloaded" in the mouse?

Answer 5

Router, native firmware? Number of connected devices, what? (PC, tablets, phones)
There was such a situation with asus, and the Internet fell not only from torrents. And everything varied depending on the number of devices connected, and yes, even taking into account the performance of the router (I don’t remember the name), which the poor lived under 70-99% of the load. But as it turned out, the main problem was in the max. number of active connections on custom firmware dd-wrt.
Increasing from the default 4000 to 6000-8000, and everything fell into place. But again, max. the available figure is purely the sum of the ratios of the RAM / CPU configurations of the router.