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Turbocharge your Internet TCP/IP


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#1 Visentinel

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Posted 02 October 2005 - 11:19 AM

Windows by default doesn't have a big enough TCP Receive window Size.

Basically this means how big the buffer is for receiving data, for example

You download a file
your PC says send me 16kb
your pc downloads 16kb and sends a tcp reply for another 16kb
during this time your not downloading, however with about 200ms lag you can download full speed just fine with even 300k/sec broadband

But the internet is usually allot worse than that.

So lets increase your computers TCP window to 128K

1.: Click start and select run
2.: type regedit and click ok
3.: Navigate to HKEY_LOCAL_MACHINE/SYSTEM/CURRENTCONTROLSET/SERVICES/TCPIP/PARAMETERS

Now you create 3 Values.

Right click in the Right pane and create 3 DWORD Values Named

1. TcpWindowSize
2. Tcp1323Opts
3. GlobalMaxTcpWindowSize

Right click 1. and choose modify
Select Hexadecimal and enter 20148
Ok

Right click 2. and choose modify
Select Hexadecimal and enter 3
Ok

Right click 3. and choose modify
Select Hexadecimal and enter 20148
Ok

Should look Like this.
Posted Image

With p2p like Bittorrent this doesn't make much difference unless the other peer your getting data from has a similar tweak, but knowing the internet, your probably connected to several that have tweaked :blink:
This works really well with downloads from http servers on the net like downloading a MS patch or getting the latest thing of sourceforge.
Also this isn't recommended if you have 56k dialup :P

You must Restart your computer for the settings to take effect, do you want to restart now ?
*Yes


Thank you for tweaking using a Visentinel Guide.
Rebooting Now Please Wait....
Edit - Fixed a Typing Mistake

Edited by Visentinel, 02 October 2005 - 09:13 PM.


#2 RedInferno

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Posted 02 October 2005 - 07:08 PM

Wow, another nice guide Visentinel!

#3 Neon

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Posted 02 October 2005 - 08:13 PM

Excellent work mate, i just did it :P

#4 clarky3429

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Posted 02 October 2005 - 08:28 PM

i will try it after school, lol - thanks!!

#5 Visentinel

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Posted 02 October 2005 - 09:17 PM

the best way to test it is to dl something of a really laggy server before tweaking, then do it after tweaking.

I cant say i personally have seen amazing results, but it does work well in conjunction with the turbocharge MSIE tweak.

#6 RedInferno

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Posted 03 October 2005 - 12:33 AM

How much do you think this will influence my 56k?

#7 ShadowFox

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Posted 03 October 2005 - 04:21 AM

Lol I'm giving it a shot.

#8 Nvyseal

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Posted 03 October 2005 - 04:36 AM

does this help your upload speed too?

#9 Visentinel

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Posted 03 October 2005 - 05:24 AM

It only helps out the downstream of any given direction of a transfer.

And no the bandwidth of 56k is to low to see any benefit, unless maybe your downloading from a server with like 5000ms lag ;P

This tweak is mainly to provide good download speed over realistic Internet environments for Broadband, since Windows comes with an RWIN designed more for LANS.

#10 RedInferno

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Posted 03 October 2005 - 04:14 PM

SIgh...with my 56k I am left out on everything... :P

#11 clarky3429

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Posted 03 October 2005 - 08:41 PM

:P i cant imagine how bad it is for ya!!

#12 RedInferno

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Posted 04 October 2005 - 02:51 AM

That's why I leech gamer pro's connection, from up in the tree! LOL :P

#13 clarky3429

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Posted 04 October 2005 - 05:41 AM

lol,

gamer pro is thinking "its the start of the month and im shaped already? but i just upgraded to a 100gig a month plan!?"

#14 Visentinel

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Posted 04 October 2005 - 10:01 AM

HaHaHa

#15 ShadowFox

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Posted 04 October 2005 - 03:42 PM

This things not helping with my Linux Downloads :P

Edited by ShadowFox, 04 October 2005 - 03:43 PM.





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