uTorrent configuration guide

copied from http://forum.utorrent.com/viewtopic.php?id=74820

Have you upgraded lately from a uTorrent older – 2.x/1.8x – release to the new v 3.X ?
A new install of uTorrent ?
Having some  memory issues ? CPU load increase ?
Router/Internet are overloaded ?
Cannot reach the speed you used to have, or having a fluctuating/crappy speed ?
Want the v3.0 graphs to look & feel like  in 2.2.1 ?

Go on, try and read this, it might help! Most tips are also valid for the 2.x releases.
[size=1.3]Oh… and if it did help you, please post below – what and how. Thanks smile[/size]

[size=2]My mini-guide/suggestions for a 2.x user:[/size]

Contents
Background
O. Quick fix/install…
0. If nothing works for you…
A. For fixing CPU-load/memory-issues/stability
B. For improving low speed  issues
C. For improving Internet choking / router issues
D. If you feel your multimedia player throttles your speed (Win7/Vista)
E. For  minimizing possible “privacy invasion” issues
F. Bypassing known bugs
G. When the speed is going over your set limits
H. For  problems downloading the “help file”
I. For faster sequential downloading of multi-files in a torrent
J. For auto-extracting files after download completes
uTorrnet v3.x Specials…
K. How to revert 3.0 graphs to 2.2.1 look & feel

Background
If you have a pre-2.01 release installed (1.8.5+), you should be aware that the main things that have changes and might effect you are:

In uTorrent version 2.2.1:
1) Your traffic overhead (being the ack packets in the reverse direction to the actual traffic, or the headers inside them) is now being clearly viewable:
You can see it on the dotted speed-graph lines + the “O:” on the bottom status bar
If your “Bandwidth->Apply rate limit to transport overhead” is enabled ( advanced->net.calc_overhead = true  in pre-2.03 releases), overhead will also be counted toward your speed limit (added to your payload-data speed).
2) Support for the uTP (UDP based) protocol was added (in V2.0 and up – added out-going connections’  support)
Also, you can not choose NOT to limit only the uTP payload speed in the Bandwidth pref. dialog.
This latest release has also a bit larger amount of connection per second rate than before.
On post XP systems – the bt.max_halfopen (concurrent connection attempts) default value
was increased from 8 to 25, and both TCP AND uTP connections are being tried for every peer.
3) Files read/writes is differently handled, and your Windows disk cache might be causing some issues (crashes/hangups/slowdown).

In uTorrent version 3.x:
1) The new streaming feature – can cause your download issues/slowdown  especially if you are with low bandwidth
2) The new GUI design can effect CPU/memory  consumption, especially if you have MANY torrents in your list

O. Quick fix/install… 
Well, you can skip reading my guide, get my example settings.dat file, rename it to settings.dat, and:

For new installers:
* Place this settings file with uTorrent.exe in your install directory BEFORE installing

For up-graders or just whoever like to try and improve:
* Locate the old settings.dat file (it is either in your exe directory, or in %appdata%\uTorrent)
* back it up
* replace it with this settings.dat file
If it is a new install, this will also skip for you the optional browser-bar install !!!

This settings are intended for an Internet connection having  1Mbit/s upload speed!
You should at least:
* set up your own port # in preference->connection and forward it in your router.
* set your own download & torrent directory paths in pref->directories

If you do NOT have a 1Mbps upload connection, MANUALLY adjust your  settings with the setup guide (ctrl-G) to 90% of your connection UPLOAD speed.
Here are two alternative settings.dat files for 500Kbit/s upload and 250Kbit/s uploadconnections .

Important: To be clear, please note, that  ALL the above numbers are in Kbit/sec. uTorrent rate limit settings in pref.->connection are in KByte/sec,  that is 1/8 of the above numbers!

Good luck smile

 

0. If nothing works for you… :
No downloads, no seeding , active torrents are in red, no green net-status, in trackers’ tab – none are connecting… check this:
[1] If you have a router –  check that your port is still being forwarded and is opened [Control-G->setup guide] and for both TCP + UDP
[2] Check that you have enabled/excluded the new release in your Windows firewall/3rd party firewall (replacing the old rules). Try uninstall ZoneAlaram if installed.
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A. For fixing CPU-load/memory-issues/stability:
[1] In pref.->advanced->Disk Cache  Make sure :
1a. ->Disable Windows caching of disk writes/reads – are both checked
1b. ->reduce memory usage when the cache is not needed – is unchecked
[2] Make sure pref.->advanced->gui.transparent_graph_legend is false
[3] Win7 users might experience uTorrent process not closing properly.
It is suspected to be caused by a Microsoft IPV6 issue. Those command lines can assist by disabling IPV6 in your system:
netsh int 6to4 set state disabled
netsh int teredo set state disabled

[4] Win7 freezing on you – you can also set the new advanced setting: net.disable_ipv6  = trueand pref->connection->Enable uPnP Port mapping = unchecked. That might prevent it.
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B. For improving low speed  issues:
[1] Make sure your upload speed limit is correctly set as follows:
1a. Set “Banwidth->Apply rate limit to transport overhead”  to enabled   (very recommended) –
set the upload limit to about 80-95% of your connection’s maximum upload-speed/cap.
This is required so to accommodate for 1) + 2) above, limiting the total of
upload-payload + download-acks-overhead
You can test your connection speed @ http://speedtest.net or use  the options->setup-guide (control-G)
1b. If you have “Bandwidth->Apply rate limit to transport overhead” – disabled  –
set the upload limit to 70-80% of your connection’s maximum upload-speed/cap.
This is recommended in this case, but not required, though.
You can set it to as low as the actual seeding-payload speed you like to have.
In both cases you can use a different upload speed limit setting at  pref->bandwidth->”Alternate upload rate when not downloading
Test your download speed again now with this (test torrent…)  This step should be enough for most users that upgrade!

[2] Settings that might improve (reduce) your overhead:
2a. Set pref->advanced->net.uTP_dynamic_packet_size =false
2b. Set pref->advanced->net.utp_initial_packet_size = 8 (use MTU size, actually 1440…)
[3] Set pref.->advanced->bt.tcp_rate_control = false
[4] If you want to try and reduce your ISP’s throttling:
Some ISPs are more “sensitive” to UPD (uTP) traffic. You can reduce the use of uTP by –
4a. Support only uTP incoming connections by setting pref->advanced->bt.transp_disposition =29
4b. Alternatively – disable the use of uTP by pref->BitTorrent->Enable Bandwidth Managementunchecked
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[5] To improve availability of peers, you might want to clean up the bans uTorrent imposes on PEX peers due to ‘message flood’. So, for torrents running/active  for a long time, it might be helpful to perform every couple of days:
right-click->advanced->reset bans
right-click->advanced->clear peer list

Finally,  For users who like to experiment with uTP – try to reset it to UNLIMITED speed disabling the new: Bandwidth->Apply rate limit to uTP connections .
The theory is that this will give you high speeds, w/o effecting other Internet traffic.

Good luck with it ! and report back here … wink

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C. For improving Internet choking / router issues:
[1] First, make sure you have set a proper upload speed limit  (B.1 above) and that your max # of connections/slots are per the setup-guide
[2] Change setting per B.2a&b above
[3] Set your pref->advanced->bt.connect_speed = 5
[4] Set your pref->advanced->net.max_halfopen = 8
[5] Disable the DHT network
[6] In pref->connection – Disable NAT-PMP port mapping.
Make sure ‘uPnP port mapping’ is unchecked if you’ve manually forwarded you port in the router.
[7] AMD Dual Core specific issue, choking when running on XP
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D. If you feel your multimedia player throttles your speed (Win7/Vista):
If you’ve noticed this strange behaviour (mostly with high speed connections) when running a player/recorder/streamer app – blame Microsoft… and modify/create  this registry key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\Multimedia\SystemProfile\
Name : NetworkThrottlingIndex

Setting to  – FFFFFFFF will make it not throttle .
Other values may adjust the amount per the above article.

E. For  minimizing possible “privacy invasion” issues:
1. Settings:
Pref->general->send details when checking for updates –  unchecked
Pref->advanced->gui.report_problems – false (do not send crash reports)
Pref->advanced->gui.bypass_search_redirect – false (bypass BT inc search server when searching)
2. To avoid installing of the TOOL-BAR make sure you follow this:
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You may also look here for some more advanced methods on how to uninstall it … tongue

F. Bypassing known bugs:
1. For Win 7/x64 users –  not being able to kill uT process – see A[3-4] above …
2. Resetting Transfer Cap history – will not quit the “stopped” state , caused by the cap limiter. A bypass solution is here.

 

G. When the speed is going over your set limits:
a. See that your Perf.->bandwidth->Apply rate limit to uTP connections is checked…
b. Preference->bandwidth->Apply overhead to transport overhead
c. Preference->BitTorrent->limit local peers bandwidth

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H. For  problems downloading the “help file” :
– Get the latest copy from here
– Extract to your settings *.dat files location
– Rename to utorrent-<version-#>-<build-#>.chm
For example – for release 2.0.1 build 19248 – utorrent-201-19248.chm
for release 2.0.2 build 19648 – utorrent-202-19648.chm
for release 2.2.0 build 23071 -utorrent-220-23071.chm

 

I. For faster sequential downloading of multi-files in a torrent:
This tip will assist you in  case you have multiple TV episodes inside a single torrent, and you like to download and watch the first episode(s) first.  Here is how you do it conveniently and automatically –
1. Press shift-F2  + click preferences
2. First, make sure you are NOT on advanced, then – click advanced.
3. You’ll see a new property: bt.sequential_files. Set it “true

You are all done. From now on – multi-torrents downloads will automatically set high priority to the first/top file downloading, and low for the rest. This way you’ll get the top on the list  the fastest way.
Note: a. The downloads’ order always goes by the position of the file inside the torrent.
b. You should revert this setting to FALSE again, since the overall time to download multi-files torrents – will be LONGER!

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J. For auto-extracting files after download completes:

Use the following command inside preference->Advanced->Run-Program:

“c:\program files\winrar\winrar.exe” x -ibck  “%D\*.r*” “%D”
or:
cmd /c  start /min IF EXIST “%D\*.r*”  “c:\program files\winrar\winrar.exe” x -ibck  “%D\*.r*” “%D”

Were c:\program files\winrar\winrar.exe – is the location of your Winrar program.
Adding the ‘-ad’ switch will also create a sub-folder with the rar file name.
More details are in this winrar guide: http://acritum.com/software/manuals/winrar/

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K. How to revert 3.0 graphs to 2.2.1 look & feel

Here is a template/skin file I made, that supposes to give you  the 2.2.1 speed-graph’s colors.  Try it out smile
http://www.mediafire.com/?ers6w38k1rvrzoz
You just need to drag & drop it into uTorrent 3.0 or double click it.

To get back into the original colors: close uT, and delete the generated current.btskin file, that should be were your settings.dat is (either at your exe location or %appdata%\utorrent)
Or:
Use this file http://www.mediafire.com/?dp3679xb6g75nn9 the same way as you did the first one.

Have fun wink

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Other troubleshooting related links/threads:
– Speed related issues: http://forum.utorrent.com/viewtopic.php?id=15992

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