2K & XP Users Please Try This

mnosteele52 · Post by **mnosteele52** » Sat Dec 27, 2003 12:11 pm

All 2K & XP users please try something for me and let me know the results. If you are using CableNut please use all of your normal values except change the following ones:

GlobalMaxTcpWindowSize = leave blank
Tcp1323Opts = 1
TcpWindowSize = leave blank

Change those then save to registry and reboot as usual.

Try these changes for a few days and let me know if your speed has improved, stayed the same or become worse.

Thank You,

mnosteele

Andrzej · Post by **Andrzej** » Sat Dec 27, 2003 12:29 pm

OK
... For Win2K/XP the registry key and the name which set value :
[HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters]
"TcpWindowSize" =DWORD:0000xxxx
"GlobalMaxTcpWindowSize" =DWORD:0000xxxx
"Tcp1323Opts" =DWORD:00000000

but also hehehe - not on mentioned CN
[HKLM\S\CCS\Services\Tcpip\Parameters\Interfaces\(AdapterID)]
"TcpWindowSize" =DWORD:0000xxxx

mccoffee · Post by **mccoffee** » Sat Dec 27, 2003 3:24 pm

It worked in my case superman check ur pm

Triplate · Post by **Triplate** » Sat Dec 27, 2003 3:58 pm

It killed me

...whats up?

Andrzej · Post by **Andrzej** » Sat Dec 27, 2003 4:41 pm

on ADSL PPPoE|A 512kbps w2k
- not work at all - cannot surf
but rwin in NIC key solved problems (wthout RWINs in Parameters)

BTW can be useful
...default RWIN (settings not present by default)
values:
Windows 95/98 = MSS × 6 time = 8760
Windows Me/2000 = MSS × 12 time =17520
Windows XP = MSS × 44 time =64240...

Joel · Post by **Joel** » Sat Dec 27, 2003 5:20 pm

It seems to have stayed the same for me...Win 2K Pro, ADSL PPPoE

mccoffee · Post by **mccoffee** » Sun Dec 28, 2003 4:45 pm

iflog · Post by **iflog** » Mon Dec 29, 2003 11:03 pm

I got a small increase but any is better than none. I went from 350Kb/s to 358Kb/s...not bad

Adelphia Cable
3000/256
Windows 2000 Pro
Asus A7V333 Motherboard
AMD Athlon XP 2800+ 2.08 GHz CPU
Asus V8 420 GeForce 4 Ti4200 Video Card
Western Digital Caviar WD400BB 40 GB Hard Drive
Dual Monitors - 21" Sony & 19" NEC

welz400 · Post by **welz400** » Tue Dec 30, 2003 8:49 am

Tried it for about 10 minutes.....aaaaarggghhh!
Could not surf; it was like travelling by donkey instead of a car

Download speed was 3.5Kb/sec!
Now back to 57.4Kb/sec

earthmofo · Post by **earthmofo** » Thu Jan 01, 2004 11:39 am

Tried it for 24 hrs and it was slow at 2800-2900 kb/s. With my custom settings 3100-3200 kb/s. No difference in the upload speed.

Used NetStat to monitor speeds.

TrevGlas · Post by **TrevGlas** » Thu Jan 01, 2004 4:03 pm

mnosteele now I'm running above my caps

Caps = 189 KB/S

Now = 197.3 KB/s constant for 2 hours straight

How can this be?

mnosteele52 · Post by **mnosteele52** » Thu Jan 01, 2004 6:05 pm

Thank you very much to all who responded.

And to the other 400 and some lame arses - no thanks to you for a response.

Things are inconclusive since it was such a LOW response.

OK here is the deal.

As most of you know (those who have read the TCP/IP White Papers) Windows 2K & XP have a self tuning TCP/IP stack. What this means is that it wil continuosly auto adjust as needed for optimum throughput, it will ALWAYS keep your TcpWindowSize at even increments of your MSS to help optimize bandwidth. When you connect to a server/site your pc and the remote pc agree upon a TcpWindowSize and the transfer of data starts, your TcpWindowSize and the remote servers TcpWindowSize can never exceed one another and they will continuosly adjust themselves as needed for the best possible throughput. If you leave these values blank then your TcpWindow can continuosly auto adjust itself as needed and by setting Tcp1323Opts to 1 it will allow for window sizes larger than 65535 if they are needed. So in essence it could be a mute point trying to optimize the TcpWindowSize, just let Windows do what it is supposed to do.

I would REALLY like some more input on this if more people could respond.

*Note*- This is for 2K & XP ONLY, 98 & ME DO NOT have the same TCP/IP stack and they DO NOT self adjust themselves so tweaking is an absolute must with those OSs.

Bandit159 · Post by **Bandit159** » Thu Jan 01, 2004 8:21 pm

I just started trying it as of yesterday.It had a postive response i feel.I can tell in my online gaming and speed tests at the usual places are better in general..

mccoffee · Post by **mccoffee** » Fri Jan 02, 2004 2:43 pm

bump cmon people give it a shot do your good deed

TrevGlas · Post by **TrevGlas** » Fri Jan 02, 2004 2:54 pm

People.... also make sure you completley delete the field..... NOT set it to zero.... I don't see why It would decrease your speed unless its set to 0.

welz400 · Post by **welz400** » Fri Jan 02, 2004 4:36 pm

I just gave it another go earlier this evening, after I read mnosteels' explanation etc., and I thought logically it should work ok, so I went for it again.

No it did not work, I could hardly connect to my ISP; mail program failed! Anyway, I tried surfing and then did a speed test at adslguide.org.uk, and my speed was abismal....just about 3KB/sec.

And no, I did not forget to change tcp1323opts to 1.

So there you have, I did try and hoped it would work, but it wasn't to be

Lee_Nover · Post by **Lee_Nover** » Fri Jan 02, 2004 5:06 pm

My download speeds decreased on the two test files, AOL and Optonline. My surfing, however, has increased very slightly. I use to have large RWIN, so with download sites with little packet loss, I was downloading about 530 Kilobytes/sec. Now I am below 100 KBs. Question, if the TCP window size is adjusted on the fly (when handshaking occurs) then why do I have to reboot when I do it manually? Why does the TCP analyzer say 17,520? Does speedguide always negotiate that size?

mccoffee · Post by **mccoffee** » Fri Jan 02, 2004 5:23 pm

You always reboot when a registry changed if you don't reboot the changes is not saved sorta speak.

TrevGlas · Post by **TrevGlas** » Fri Jan 02, 2004 5:24 pm

Welz did you put the receive window at 0, or did you just delete the field completely?

welz400 · Post by **welz400** » Fri Jan 02, 2004 5:29 pm

TrevGlas, I deleted the field(s) completely

WolfgangPC · Post by **WolfgangPC** » Fri Jan 02, 2004 5:32 pm

I am pretty sure I have a increase, where are these test links, so I can check the download speeds?

Lee_Nover · Post by **Lee_Nover** » Fri Jan 02, 2004 5:36 pm

FTP SPEED TESTS

OOL FTP Speed Test
ftp://ftp1.optonline.net/pub/test64

AOL FTP Test
ftp://ftp.newaol.com/aol6.0/179902/setupaol60.exe

RoadRunner FTP Test
ftp://test.tampabay.rr.com/ftp.50m.sav

The most reliable way to test your speed/bandwith is to use one of the FTP tests above. Just download about half of it (until your speed levels off) and multiply the average by 8 to see how close to your caps you are.

Lee_Nover · Post by **Lee_Nover** » Fri Jan 02, 2004 6:09 pm

Originally posted by mccoffee
You always reboot when a registry changed if you don't reboot the changes is not saved sorta speak.

So windows does not change the registry when it is done automatically? Btw, surfing speeds have increased with sites having latency under 100 milliseconds.

mnosteele52 · Post by **mnosteele52** » Fri Jan 02, 2004 6:10 pm

welz400 there has to be something else going on with your connection otherwise what you are saying is that if you don't tweak your connection then you can't connect to the internet. That means that eveyone with your ISP should have this problem if they don't tweak, that's impossible.

Lee_Nover you need to reboot when you change it manually because anytime you make changes to your reegistry in certain hives a reboot is required for the change to take effect. It just so happens that lately when you are using the analyzer your TcpWindow is adjusting to 17520, mine does this sometimes and other times it adjusts to 64240.

iflog · Post by **iflog** » Fri Jan 02, 2004 8:44 pm

I have already posted that I did get a slight increase in download speeds but I want to add one more thing. Something I find happening is that when I start to download a file, the program hesitates for just a second then starts. I use Download Accelerator Plus.

tryn1 · Post by **tryn1** » Sat Jan 03, 2004 9:58 am

Always searching your site for a better tweak! This one seems to keep my speed about the same, perhaps slightly better up-load.
Its only been a half day so far so I'll let you know if I do notice a larger difference later.

As always, keep the suggestions comming!

2004-01-03 09:46:52 EST: 3150 / 194
Your download speed : 3150677 bps, or 3150 kbps.
A 384.6 KB/sec transfer rate.
Your upload speed : 194647 bps, or 194 kbps.
Seems like broadband .. above the 1mbit barrier!

welz400 · Post by **welz400** » Sat Jan 03, 2004 10:39 am

Originally posted by mnosteele52
welz400 there has to be something else going on with your connection otherwise what you are saying is that if you don't tweak your connection then you can't connect to the internet. That means that eveyone with your ISP should have this problem if they don't tweak, that's impossible.

mnosteele52, while I don't doubt what you say, the other side of the coin is that win2k has a default Rwin value of 81920???, so that value is there, against none at all, and logically a connection can be made.

Please correct me if what I say is rubbish

I will endeavour to find out what is wrong with my connection so that I can connect with no value.

Thanks

mnosteele52 · Post by **mnosteele52** » Sat Jan 03, 2004 10:52 am

2K & XP do not have a hard coded TcpWindowSize, they both self tune themselves, just read the White Papers on how it works.

welz400 · Post by **welz400** » Mon Jan 05, 2004 4:07 pm

mnosteele52, I just did a quick install of winXP on my other machine, and leaving the Rwin values blank etc, the speed change on this box is about the same.
With my MTU set at 1478 and a Rwin of 51768 I get 58Kb/sec, and with Rwin values blank, I get 57.8Kb/sec.

One thing I have noticed is that with a Rwin value of 17256 on the win98 machine, my download speed varies from a poor 43KB/sec to a decent 58KB/sec, depending on time of day etc, and with the win2k machine I get speeds between 53Kb/sec and 58Kb/sec.

So that will do for me

Thanks

welz400 · Post by **welz400** » Mon Jan 05, 2004 4:08 pm

Oh, sorry, forgot to say:
My connection is a 512/256 adsl PPPoA thru a router.

chpalmer · Post by **chpalmer** » Tue Jan 06, 2004 12:33 am

Ive just been playing with this and can not use 1 in the tcp1323opts field. Dont know if it would work yet with hard coded numbers but Im wondering if it has to do with my Linksys router or modem... Gonna keep trying stuff as this has got me stumped

chpalmer · Post by **chpalmer** » Tue Jan 06, 2004 1:25 am

as long as I have a number larger than 65535 for rwin, the tcp1320opts field can have a 1. if not then it will cause the page to hang. I get the header of msn.com, ect. and that is it.
Win 2000 sp5 WaveBroadband 768/128 using Linksys stackable ver 2 modem and router, befsr41 pre Cisco.

Numbers below are constant

All boxes blank in Cablenut
TCP/Web100 Network Diagnostic Tool v5.2.0f
click START to begin
Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done
running 10s outbound test (client to server) . . . . . 119.44Kb/s
running 10s inbound test (server to client) . . . . . . 803.36kb/s
Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done
running 10s outbound test (client to server) . . . . . 125.00Kb/s
running 10s inbound test (server to client) . . . . . . 833.53kb/s
Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done
running 10s outbound test (client to server) . . . . . 125.72Kb/s
running 10s inbound test (server to client) . . . . . . 830.53kb/s

Tweaked with 20440 rwin 16384 default send window. Other fields as recomended by Cablenut live page...
TCP/Web100 Network Diagnostic Tool v5.2.0f
click START to begin
Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done
running 10s outbound test (client to server) . . . . . 132.14Kb/s
running 10s inbound test (server to client) . . . . . . 804.53kb/s
Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done
running 10s outbound test (client to server) . . . . . 133.29Kb/s
running 10s inbound test (server to client) . . . . . . 806.70kb/s
Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done
running 10s outbound test (client to server) . . . . . 132.26Kb/s
running 10s inbound test (server to client) . . . . . . 807.95kb/s

Tweaked with 32120 rwin and 16384 default send window 768 128 speeds
Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done
running 10s outbound test (client to server) . . . . . 130.88Kb/s
running 10s inbound test (server to client) . . . . . . 829.04kb/s
Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done
running 10s outbound test (client to server) . . . . . 132.39Kb/s
running 10s inbound test (server to client) . . . . . . 829.79kb/s
Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done
running 10s outbound test (client to server) . . . . . 132.39Kb/s
running 10s inbound test (server to client) . . . . . . 829.04kb/s

I know these tests are not to reliable but they are constant...

mccoffee · Post by **mccoffee** » Tue Jan 06, 2004 2:18 am

Originally posted by chpalmer
Ive just been playing with this and can not use 1 in the tcp1323opts field. Dont know if it would work yet with hard coded numbers but Im wondering if it has to do with my Linksys router or modem... Gonna keep trying stuff as this has got me stumped

It shouldn't matter that u are using a router or modem you should be able to put a 1 in tcpopt123, if anything i would try reinstalling tcpip it could've got corrupted i have to ask when did win2k come out with sp5 the lastest one was 4 so i tought??

chpalmer · Post by **chpalmer** » Tue Jan 06, 2004 2:34 am

Brain fart... yep sp4. seen the patches labeled pre sp5 so had that in the back of my head

Ill try reinstalling as I get a chance and re-post. Figured it must be some kind of issue on this end, and may be what some of the other posters were see'ing.

busjahn · Post by **busjahn** » Tue Jan 06, 2004 7:45 am

Hey, it's a nice try man, thanks for being ever vigilant. The problem here is probably in a false implementation of the TCP/IP whitepapers by Microsoft in Windows 2000. I could be wrong, but personally I get nothing when I try this full tweak, and I'm sure I didn't fill in the values wrong. Has anyone with win2k had positive results? I don't know what you all use, but it's looking a lot like the tcp/ip stack is a little different from 2k to xp.

mccoffee · Post by **mccoffee** » Tue Jan 06, 2004 9:06 am

I notice a difference with win 2k are using the afd buffers while ur doing the default.

mnosteele52 · Post by **mnosteele52** » Tue Jan 06, 2004 10:48 am

Originally posted by busjahn
Hey, it's a nice try man, thanks for being ever vigilant. The problem here is probably in a false implementation of the TCP/IP whitepapers by Microsoft in Windows 2000. I could be wrong, but personally I get nothing when I try this full tweak, and I'm sure I didn't fill in the values wrong. Has anyone with win2k had positive results? I don't know what you all use, but it's looking a lot like the tcp/ip stack is a little different from 2k to xp.

This is not a "patch" it is just leaving certain registry settings at their default values - that is all. The White Papers are correct.

What I see a number of people saying is that their connection won't work or is extremely slow when they do this. That is IMPOSSIBLE, if that were true then how did you even use the internet prior to finding Speedguide and tweaking your connnection? You did it by using the default values in the registry.

FYI 2K & XP use the same TCP/IP stack.

Another FYI if you using a speed test that is giving results above your caps - it's bogus and should be discarded.

busjahn · Post by **busjahn** » Tue Jan 06, 2004 12:50 pm

Sorry, I wrote that post when I was half asleep. Yeah, you think I'm an idiot, or I'm just trying put you down. I actually came to this site wondering what VPI and VCI values really mean, and wondering if I can use alternate values on my dsl modem to get a better connection. I tried your registry settings in Cablenut and after rebooting, my connection was painfully slow even to my modem interface (I.e. wait minutes for the first page load). I know I put in the settings correctly, so either Cablenut messed somthing up, or there's something really f*cked in win2k (not unlikely).

I was actually hoping to get a repsonse from some of the other people who reported a connection speed loss with more specifics on their configurations, but I didn't get through, sorry.

mnosteele52 · Post by **mnosteele52** » Tue Jan 06, 2004 12:54 pm

I don't think either of those things. You never specified any problem and have never posted a TCP/IP Analyzer test for us to make sure things are setup properly.

welz400 · Post by **welz400** » Tue Jan 06, 2004 2:20 pm

Originally posted by busjahn

I was actually hoping to get a repsonse from some of the other people who reported a connection speed loss with more specifics on their configurations, but I didn't get through, sorry.

If you are using win2k, which looks like it, I got a right miserable speed with the Rwin boxes blanked out to no value, but with XP my speed was about the same as when I did fill the Rwin box.

Now then, you seem to have the same problem as I do with Win2k, and I haven't a clue what it might be. I wish I knew because I would rather have win2k use its own settings as and whenever, rather than me put a specific value in which may do for some sites but not for others.

Hope you find an answer as I do

SG Broadband Community

2K & XP Users Please Try This

Better, Worse, Same?

2K & XP Users Please Try This

About the Same......

I dont think this patch works on win2k..

Re: I dont think this patch works on win2k..