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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416 Responses
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do you have to have the patch to raise the TCP to 80 and therefore speed things up?
guys i installed the marvelous patch linked somewhere on this website around 3months ago..recently my connection speed increased to 8mbps..(i was with 4mbps), the problem is that
…i’m stuck in the 470-530’s region…can bit comet go faster please???????
thnks fava
i have an 8Mb connection. using normal cables. using the step by step system/points exactly stated in the tutorial! believe me ppl.
step by step!
max halfopen tcp 80…etc etc etc
FAva
THE BEST WAY TO SPEED UP UTORRENT IS FOR EVERY 1 TO PUT UNLIMITED SPEED FOR UPLOAD AND DOWNLOAD. with the upload speed on max they do not slow your download speed as they use a different port
HEY GUYS YOUR F***kING GREAT!
I’VE SOLVE ALL MY SPEED PROBLEMS WITH uTORRENT
THANK U A LOOOOOOOT
thanx it looks nice tips
I changed the half open limit from 10 to 38. I went from getting speeds from maybe around 200kb/s on a good day to 700 kb/s consistentley every day. I have vista and i coudlnt change it for the longest time, but bit comet 1.02 i guess has the patch in the software and allows for vista users to do this, so you dont have to go through the whole hassle of trying to manually patch it. I guess im going to fill up my 120gb external pretty quickly. I suggest if your having this problem with vista download the new version it worked for me
this is a virus, my avg detected as a virus. people dont download it!!!
my msn and all gets of when i run bitcomet too but then i run utorrent for 5 min’s and my net gets back on ;)
WOW man this really increased my download first it was always 80Kb/s and now almost 300Kb/s!!!
Thanks!!!!
I increased the half open tcp connections to 80 and no difference, any tips?
tnx!! diz worked on mine………!!
can anyone help me ? i use to download at 200kbps using bitcomet although im on a 1mb line but nowdays i can only download at 20kbps max. ive enev done the patchiing and everything
Woah… This made my speed stay in the 150kbps to the 300kbps thats unbelevieable! xD
my msn and other get off when i run bitcomet…what should i do..help pls..
the only difference i see is from 50 min estimated time to 1 hour 10 min….
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