Speed up Bitcomet and uTorrent
Written by Ernesto on December 20, 2005In a previous post we advised to raise the maximum amount of half-open tcp connections to speed up your torrents. On itself this is a great trick, however I recently discovered that 90% off all people use the default settings on their client, and that’s a problem.
Both Bitcomet and uTorrent (and probably other clients) limit half-open tcp connections by default. This means even if you hack the max half-open tcp connections in windows xp, your speed will still be limited. So this is what you need to do:
First of all, read this post that gives you some tips and tricks how to speed up your torrents
1. Hack the max half-open TCP connections
If you’re on XP sp2, your TCP connections are limited to a maximum of 10. This seriously hurts your downloading speed because it wont let you connect to a high amount of ip numbers. It is supposed to slow down viruses because their spreading strategy is to connect to a high amount of ip numbers, but it also cripples your torrent downloads.
A nice way to fix this is to download this patch, it allows you to set the maximum allowed connections to any number you want. Any number between 50 and 100 is ok (more is NOT always better).
2. Configure your torrent client to allow 50-100 max half-open TCP connections
uTorrent: Options > Preferences > Advanced options > net.max_halfopen
Bitcomet: Options > Preferences > Connection > max half-open TCP
Now you’re ready to go…
A third point of interest is that some “windows updates” revert your tweaked tcp connections back to 10. So it’s wise to check this every now and then. You can check this by going to (in windows xp) Start > Control Panel > Administrative Tools > Event Viewer > System… Look for event 4226 (sort by event).
If there are a lot of daily occurrences it’s likely that the max amount of half-open tcp connections was set back to 10. Or you’re infected with some nasty spyware…
If you’re done, you might want to try the torrent settings optimizer to check if all setting are correct
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417 Responses
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I was getting 2kb/s and then i forwarded to my router the port used by utorrent and now i’m getting 200+kb/s. Just thought I’d pass on what’s worked for me. Very simple with no patch, this is my first time running utorrent. In preferences go to ‘connections’ and find: ‘port used for incoming connections’. This is the port that you want to forward. Forward one for tcp and then another udp. That’s all I did and now I’m getting super-fast speeds.
hmm .. the speed didn’t change. thank you anyway
can anyone tell me what my upload, download, tcp all those settings should be if my connection is 100mbps.i noticd that my max upload is 55kb/s but i dun know about my max download. can someone tell me whats the best setting? thx in advance
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NO changes are done after patching and configure torrent’s program
it depends only how many peers have my file !!
this way will work great at high scale :::
>>if there is too many peers have my file and my download speed is very high >4Mb and i can’t use all of it’s BW.
so, at this situation this way will be Excellent.
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Help, i can’t seem to get the utorrent port forwarding working. I went thru the portforward website stilll i can’t get it done. My com is connected to a router and i did the configurations but stil can’t achieve a portforwarding detection. What do i do?The worst thing is that uTorrent is not even downloading anything even though seed and peers are sorta detected 0(xxx) and 0(xxx). I am really in desperation. This has been going on for nearly 1 and a half months. the fucking isps
how do you decrease your uploading rate on utorrent
decreasing your upload speed will decrease your download speed, it’s in the options, have you looked? i wouldn’t bother.
NIKOLAS BEST
This stuff really works! My speeds are now tripeled ,if not more… Anyone wants a faster download,THIS IS IT!!!
Thanx man,youre a genious!!
When I try to install this, I get this message:
Can someone help me? Even though I’m on a 54mpbs wireless broadband connection I only get 14kbps on a 70seed-30peer file. ??? Any help would be GREATLY appreciated.
MESSAGE: http://img62.imageshack.us/my.php?image=bitcometnu3.png
[quote comment="30575"]When I try to install this, I get this message:
Can someone help me? Even though I’m on a 54mpbs wireless broadband connection I only get 14kbps on a 70seed-30peer file. ??? Any help would be GREATLY appreciated.[/quote]
Did you try all the other settings. If you only get 14kbps, this patch wont help either. What is your max upload and max download speed?
Hello all
With the new BitComet version (0.79) you can configure your half open connections in the preferences menu, so no need for the patch…
I first set it to 80 but saw in the statistics window that they never exceeded the max of 35 so set it to 35 obviously ;). I have Cable connection (20mbps/512kbps). Atm not much change in speed…
Greetz
[quote comment="21730"]I was getting 2kb/s and then i forwarded to my router the port used by utorrent and now i’m getting 200+kb/s. Just thought I’d pass on what’s worked for me. Very simple with no patch, this is my first time running utorrent. In preferences go to ‘connections’ and find: ‘port used for incoming connections’. This is the port that you want to forward. Forward one for tcp and then another udp. That’s all I did and now I’m getting super-fast speeds.[/quote]
Did you use static ip ? or juz forward the port only?
I cant really see any differance in opening more half open connections i tryed it on 80 and theres no difference to 10, but some downloads i can get 500kb/s+ and other are 100kb/s and less i think it only really matter how many seeders you have to download from
it does NOT work for bitcomet. i already had a download speed of 143kb/s and it didnt go up after changing to 80. it dont do shit for anything, its just a program to mess up your windows files. it’s pretty much a virus. it will try to crash windows xp SP2.
Hi, I am having trouble with this. I have done everything here and my speed is still at 10-30kb/s but when i go down to Statistics in BitComet the Overall Rate is 60kb/s but it is only downloading at 10kb/s on the downbloading page.
The upload it going to 12kb/s faster than the downloading and i tried everything please help me!!!!
Email:reddy_red182@hotmail.com
i am not sure is it safe i have bittorrent .my internet speed varies grom 400kbps to 768kbps
but my download rate is only 1,2,3 or 4kbps
Do u have to rebbot after installin patch cos im in the middle of several downloads and if they stop i automatically get rejected from broadband and are shaped to 64k internet pls help?
you are very very good!!!!
wireracer If your having trouble connecting to bitcomet try u torrent SOME versions off bitcomet have been banned on various torrent sites for sharing with non members. I used to use bitcomet and liked it. but mine got nuked so I switched.
i did a speed test and i have a download speed of 5556kb/s and upload speed of 247kb/s. However my download speed in BitComet is less than 20KB/s though im connected to a large number of seeds ie. 24/36[30/277]. I also changed my max half open tcp connections to 80 but it aint working. Some1 please help me. Can email me at slitboi@hotmail.com.
Good job. Pretty Big Improvement. So what are the security issues of having 80 concurrent TCP connections?
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