Maximum Connections

Hello guys. May I know what are the best settings for maximum number of connected peers per torrent and global maximum number of connections for uTorrent? I put 80/400. Is it okay? My download speed is 1Mbps while my upload is 384Kbps. Thanks a lot.

That's a good place to start, experiment with this value to see what works best for you. Most likely lowering will have a positive effect. Try using 4 upload slots and throttle your upload to say, 36 or so, and also experiment with lowering/raising this value.

I have 384Kbps as upload as well, and use 384 for global and 115 per torrent. I use a max upload of 38.

Other than start a new topic for a near enough the same question,

I have a 400/80 MAX/PerTorrent 'Maximum connection' set, and I have unlocked my halfopenconnections to 275. My halfopen connections in advanced settings are set to 100. Are these good values for a 240kbps down, 29kbps up connection? Any opinions would be appreciated.

You shouldn't really set halfopen above 50.

He did patch it. And this number doesn't matter when it comes to speed AFAIK, it only allows connecting to peers faster.

Well, if you set your value above or equal to the half-open connection limit, you'll completely stall your internet connection until the queue finishes.

But he said he set it to 275.

That's why I edited my post earlier.

Regardless, setting it to above 50 still isn't a good idea (might cause problems with a crummy router/modem)

This is a bit OT but what is a good router/modem brand and model. I have one that doesn't cope very well with two person sharing a 1Mbps/384kbps connection (both using BT). Web surfing is thoroughly a pain in the ass sometimes. Does a dedicated Linux PC acting as a router with the router modem acting as modem only be (much) better?

dlink di-604 .. cheap and works (mostly) !

WRT54G/GS with the HyperWRT firmware.

Except for the latest hardware revision. (V5 and V4 respectively).

I would use like 300 for 1mbps

Mainline client uses only 45 (or is it 55?) max connections, per torrent. And well, more connections doesn't always mean faster speeds.

Well firstly window has a limit to how many TCP connections you can have open at a same time: It's 10, so if you set your half-open connections to like 50 or more it still connects only 10 TCP connections at a same time (correct me if wrong).

Secondly: for 1024/384 connection you should have about 130-160 connections per task and 4 upload slots.

Well firstly window has a limit to how many TCP connections you can have open at a same time: It's 10, so if you set your half-open connections to like 50 or more it still connects only 10 TCP connections at a same time (correct me if wrong).

U r wrong ! this limitation is only in XP SP2, it is a *rate* of 10 connections per second and this rate can also be inreased using special patch ...

And you are also wrong, I believe ;]

Time doesnt matter, you can only have 10 half-open connections on an unpatched install, no matter how much time passes. The rest of the connections get queued and wait for the others to finish their business (either fully connect or drop).

Well, you are probably right... not concurrent "TCP connections" as Osjur have explained, but half-open connections (SYN) as you have correctly noted. If the timeout for those is - by any chance - 1 sec., it might limit you to a max. rate of establishing 10 TCP connections to 10 peers per second...

Anyway, it is better (for uT) to increase this...

8 is the 'safe limit' to avoid problems with XP SP2 systems, and crappy modems/routers/etc that can't handle making lots of connections at once.

You raise it at your own risk.

Really OK, I'm staying with good old Win 98 ...

It's only applicable to Service Pack 2, and there's a patcher out there to raise the connection attempt limit. Remember, this is connection ATTEMPTS, not max number of connections!

Windows 2003 sets it to 50 by default, and the patcher works for it too.

Windows 98 however, limits you to 100 TOTAL connections, unless you set a registry key.

Windows 98 however, limits you to 100 TOTAL connections, unless you set a registry key.

I know, I already "patched" it... The problem is that it seems like the (undocumented) maximum possible is around 400-450 ... do you happen to know of any way to get arround that ?

I don't know of a way to get around it, sorry... though, you shouldn't really -need- 400 on BitTorrent, unless you got like a 10mbit pipe.

The actual maximum is 512. It's a hardcoded limit, you can't get past that any way apparently. :/

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\MSTCP

MaxConnections

Value Type: String

Value: 512

TcpTimedWaitDelay

Value Type: String

Value: 60

this one makes it drop connections in the TIME_WAIT status (closed connection) after 60 seconds, instead of waiting 4 minutes. It should help greatly in dealing with the connection limit.

10x Firon