brinstar Posted October 14, 2006 Report Share Posted October 14, 2006 I just changed from Azureus to µTorrent and I noticed a BIG slow down on my internet connection... I've read a couple of posts about this problem and I don't believe this is an isolated Issue.Alright, here's my setup :10mb/1mbit cable(~1200k/sec download with 120k/sec upload)PC1 -> Running WIndows XP SP2 with patched tcpip.sys to allow 500 connexions..-> Running µTorrent with the followings settings : max connection globally : 400, max connection/torrent : 125, max half-open connections : 10PC2-> Running WIndows XP SP2 with patched tcpip.sys to allow 500 connexions..-> Running IE6 / Firefox...Both connecter on a Linksys WRT54G V2 with linksys firmware on a Scientifix Atlanta Webstar cable modemUsing azureus, everything is fine (same max connections/max connection per torrent setting, same port, same torrent, same max upload, same max download) but when using µTorrent everything is REALLY slow.. I can't play any online games (getting + 2000ms latency) and browsing the web is a pain.I believe this is due to HOW µTorrent handles the max download/upload... but since it's not Open Source.. I can't check the code myselft...I set µTorrent to max 80kb U/L and DU Meter reports 100-105kb/sec all the time. When setting 80kb U/L on Azureus, I get 78-80 on DU meter. I think that Azureus calculate the overhead of the bit torrent protocol BEFORE it limits the banwidth... and µTorrent simply calculate how muich of the data itsleft is transfered... limit that then encode the packets and send them.Setting Azureus to 105k/sec U/L gives the SAME results as µTorrent at 80kb/secSee for yourself : Link to comment Share on other sites More sharing options...
Ultima Posted October 14, 2006 Report Share Posted October 14, 2006 With a configuration like that, you're setting yourself up for plenty of overhead. Use the Speed Guide. Link to comment Share on other sites More sharing options...
brinstar Posted October 14, 2006 Author Report Share Posted October 14, 2006 Could you be more specific? what's wrong with my configuration? Link to comment Share on other sites More sharing options...
Ultima Posted October 14, 2006 Report Share Posted October 14, 2006 Plenty of overhead as in "you're using settings that are very extreme." As I said, use the Speed Guide. And try uncapping the download speed.Also, µTorrent does take overhead into account when limiting and showing the speeds in the status bar. Hence the reason a question like this would even be listed in the FAQ. Link to comment Share on other sites More sharing options...
brinstar Posted October 14, 2006 Author Report Share Posted October 14, 2006 here's the speed guide result :I checked my contract and it was 960kbps UP.. not 1mbps...this is really close to what I thought.. (10mbps down, 960kbps up) Link to comment Share on other sites More sharing options...
Ultima Posted October 14, 2006 Report Share Posted October 14, 2006 You're not using your connection for any other reason besides testing, while you're testing, right? Including all other comptuers that might be on your network?Anyway, you should test several times. Select the average upload speed from the Speed Guide. If it doesn't match nicely (off by more than 10% or so from the upper one), pick the lower one. Link to comment Share on other sites More sharing options...
brinstar Posted October 14, 2006 Author Report Share Posted October 14, 2006 ok, just tested a few times, from different servers, and I get about 840-860 kbps upload...Speed guide recommends : 72kb/sec upload, 450 max connections, 100 max/torrentsI agree that overhead is probably taken into account... but there is something wrong with the speed limiting.. the speed is not as stable as with azureus.. it goes over and under the limit all the time.While I agree that 80k/sec was a bit high for my upload speed... it was working fine on azureus because it was never actually going over 80. With µTorrent, it probably averages 80k/sec but it goes higer than that... see my screenshots...I'll test with a lower max upload and gives you feedbackThx for your quick answers Link to comment Share on other sites More sharing options...
Switeck Posted October 15, 2006 Report Share Posted October 15, 2006 If your line is capable of the speed, µTorrent will hold the upload speed within 3 KB/sec of what you set it to.Azureus is probably only showing you an average speed and may fluctuate just as much as µTorrent. It seems very odd that in the Azureus screenshot DU Meter is showing LESS upload bandwidth being used than Azureus claims to be uploading. ONE of them is misreporting, and probably by >15%. Link to comment Share on other sites More sharing options...
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