Here's a picture-tutorial to disable Nagle Algorithm. The following applies to Window XP users with SP1 or later (Possibly works on Vista with SP1 or Hotfix installed).

1) Open "Run" program from the Start Menu

2) Type "regedit" into the run window to open up registry editor

3) In the registry editor, navigate to the following folder: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\

4) Inside the "Interfaces" folder should contain atleast 1 of these {18A9B9F94A...-like folders

5) Inspect each one and look for these 2 files shown in the picture. These 2 files should not contain 0.0.0.0's but something else other than zeros like 813.61.52.182, just not zeros...

6) Right click on the white spot of the registry editor where all the files are listed, and create a new DWORD file.

7) Rename the file (which can also be done by rightclicking on the new DWORD file) to: TcpAckFrequency

8) We'll be modifying the file's value. Right click on the TcpAckFrequency, and select Modify.

9) In the Value Data box, replace/enter the number "1" and press OK.

10) Close everything and restart your computer.

Oops, wrong thread.

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I give up :\

Testing to see if this works

http://img507.imageshack.us/img507/4818/Step1.jpg" target="_blank" title="http://img507.imageshack.us/img507/4818/Step1.jpg">

Well I tried all image-inserting method, from Imageshack's html code to the forum's insert image button.

This is an unbelievable guide. tyvm.

Now I will have a "goto" thread that I can send people to get thier Nagle fixed. :D

Lonelysoul6:

No idea what that means. o.o I'm no good with the tech stuffs T~T

This is clearly an attempt to up post count.

If you have a tart, then are given another one, you would be retarted.

PigSlayer:

Lonelysoul6:

No idea what that means. o.o I'm no good with the tech stuffs T~T

This is clearly an attempt to up post count.

Lonelysoul6:

PigSlayer:

Lonelysoul6:

No idea what that means. o.o I'm no good with the tech stuffs T~T

This is clearly an attempt to up post count.

Thats my basic goal! >:D

That's what she said.

Just uh..try and match this mess ^ to this one V

Darkmgl:

This is not a joke. I have been suffering from major lag for a long time, and I have FOUND the problem.

The issue is something known as the "Nagle Algorithm". Anyways I'll keep it simple, this algorithm was created years ago as a way of allowing a steady stream of data to use low bandwidth. It was designed for older dial up modems to prevent online games and other things sending large numbers of small packets from filling up your entire bandwidth sending "ACK Packets". What this does is automatically delay your computer from responding to a single packet by 200ms which allows your computer to respond to multiple packets at once using less bandwidth. What this essentially does, is add up to 200ms to your lag. If you want to know more, do some googling; I don't want to bore you.

Anyways, if you are on a modern broadband connection, you can DRASTICALLY improve your Mabinogi lag by disabling this algorithm. I am unsure of how to do this in Windows Vista, but in Windows XP it is a simple registry edit.

1. Run Regedit
2. Browse to HKEY_LOCAL_MACHINE \SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\
3. It gets tricky here, there be a bunch of Folders with letters and numbers under this Key, you need to find the one that is your network adapter. Browse them one at a time and look for the ones with similar settings to your network, such as if you have an IP address or a Gateway manually set. If you are unsure, you could always just try adding the line to all of them.
4. Add a DWORD named TcpAckFrequency      This is Case Sensitive. If it is already there, skip to step 5.
5. Set the Value of the DWORD to 1
6. Reboot your PC

After this, the Nagle Algorithm will be disabled.

If you wish to test your lag, the best way to do it is by casting the Healing spell. Try casting all 5 charges of your healing spell before this fix, then after. I guarantee you'll cast them twice as fast after this fix if you have had lag issues or are living on the east coast.

For more information read: http://smallvoid.com/article/winnt-nagle-algorithm.html 

I was ready to quit this game due to lag issues until I found this. Now all of my problems have completely gone away. If this improves your game performance, please share!

If you have a tart, then are given another one, you would be retarted.