liangkejing Posted June 27, 2009 Report Share Posted June 27, 2009 I am using UT on my server seeding for others(100Mbs bandwith). And when I started with couple tasks, everything works fine; but after I had all my task added (arround 1000), nearly most of the tasks can not upload (downloading not available). I also found the DHT working not normal (always waiting for the announcement), the same as creating new torrents, not speed at all.Anybody knows? Many thanks! Link to comment Share on other sites More sharing options...
DreadWingKnight Posted June 27, 2009 Report Share Posted June 27, 2009 What is the operating system on the server? Link to comment Share on other sites More sharing options...
liangkejing Posted June 28, 2009 Author Report Share Posted June 28, 2009 The OS is Windows server 2003,UT version: 1.8.3I have checked FAQ and searched for some topics,but didn't find. As I don't even know what is my problem and howto sumarize it. The condition is so strange.Is that any change the UT have the limitation on the total of tasks? Link to comment Share on other sites More sharing options...
DreadWingKnight Posted June 28, 2009 Report Share Posted June 28, 2009 The more likely cause is a limitation somewhere in the operating system preventing that many tasks and peer connections from being active at once.The problems come up more often on linux systems when trying to run piles of peer connections at once without proper configuration. Link to comment Share on other sites More sharing options...
liangkejing Posted June 28, 2009 Author Report Share Posted June 28, 2009 Thanks a lot? Could I ask if any sample solutions?I am not sure if Windows server 2003 have the same problem as Linux, if so, how should I config it?Many thanks for your help! Link to comment Share on other sites More sharing options...
Switeck Posted June 28, 2009 Report Share Posted June 28, 2009 Try lower max global (and per torrent) connections as well as turn off extra features like UPnP, NAT-PMP, DHT (especially if you're doing private torrents only!), Local Peer Discovery (LPD), and Resolve IPs (right-click in PEERS window of a torrent).Even disabling Teredo/IPv6 might help, as those are UDP-based.uTP connections in uTorrent v1.8.x and later might also be triggering issues as well, being UDP also.Lower bt.connect_speed and net.max_halfopen to maybe 1-4 each if they were at default settings...or reduce them at least to default values if set higher. Link to comment Share on other sites More sharing options...
liangkejing Posted June 30, 2009 Author Report Share Posted June 30, 2009 I have some tests done these days, and I found that if there are not that many tasks(threads) running, maybe less than couple hundred, everything will be fine, but once if there are so many tasks running at the same time (like me, has over 1000), only some tasks can work properly.these specific tasks, which are uploaded for a long time by other BT tool, and quite a lot of people have downloaded. But if a new task, new torrent, will be no speed, unless seeding by another tool for a period, it will have speed. I observed the DHT, is that a possible that when so many tasks, utorrent can't return the peers by DHT properly, that why there is no speed, or maybe there are a limitation, only when a specific amount of people are downloading at the same time, utorrent can be seeding(also the problem of DHT)? As usually, seed will transfer by DHT and after recorded by tracker???????Could anybody help to have a look? Link to comment Share on other sites More sharing options...
Switeck Posted June 30, 2009 Report Share Posted June 30, 2009 If you have 1000+ torrents running, then uTorrent potentially has to try 1000 x however many ips are on EACH torrent before getting to a new torrent. This can make for an insanely long delay even with a high net.max_halfopen value (which I don't recommend.)You may also be overloading your computer or LAN networking even though your internet connection has bandwidth left to burn. Link to comment Share on other sites More sharing options...
liangkejing Posted June 30, 2009 Author Report Share Posted June 30, 2009 really helpful， thanks a lot. Link to comment Share on other sites More sharing options...
utdime Posted July 19, 2009 Report Share Posted July 19, 2009 "The problems come up more often on linux systems when trying to run piles of peer connections at once without proper configuration."Hey DreadWingKnight. How does one properly configure a linux system to allow more peer connections? Besides a higher tcp_max_syn_backlog? Link to comment Share on other sites More sharing options...
DreadWingKnight Posted July 20, 2009 Report Share Posted July 20, 2009 higher ulimit -n values Link to comment Share on other sites More sharing options...
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