SG Broadband Community

See help thread below #17

Try to set BufferMultiplier = 1460
and
DefaultReceiveWindow = 513920
DefaultSendWindow = 64240


---
Rogers ATT@Home(1500/192)

Nevermind

If we set MaxFastTransmit = 64, then what about MaxFastCopyTransmit?

mnosteele52...I need your help , Please...I have been learning from you and trying the settings you post but I am getting lost with these new settings. Could you give me a good base to start with using the new XP tweak. I have ADSL/PPPoE, 1500/256 , XP Home...I see that most of the settings are for Cable or DSL with an MTU of 1500 but I have 1492....If I left something out just let me know...Thanks for your time..


Drew...

Lobo and mnosteele52

Same for me. Hey guy, i am impressed with your search for new tweak but there is so much change and thread, it is hard to follow.

Please summurized basic tweak for adsl pppoe and cable (+ adsl pppoA)

Thanks

I would if I could but I don't know much about PPPoE

Originally posted by Lobo
See help thread below #17

whoa!! that thread is long....can u make it short and sweet for me??...hehe

I agree with piranha .. It'll make our tweaking much easier.

Hey Guys help me tune my settings =)


InitialLargeBufferCount=100
InitialMediumBufferCount=300
InitialSmallBufferCount=500
LargeBufferSize=40960
MaxFastTransmit=64
MediumBufferSize=15040
SmallBufferSize=640
TransmitWorker=32
FastSendDatagramThreshold=4096
EnablePMTUDiscovery=1
GlobalmaxTcpWindowSize=27740
TcpUseRFC1122UrgentPointer=0
TcpWindowSize=27740
MaxConnectionsPer1_0Server=4
MaxConnectionsPerServer=6
DefaultTTL=48
SackOpts=1
Tcp1323Opts=0
TcpMaxDupAcks=2

Using ROGERS@HOME (Not sure what caps are but I heard someone say Rogers have their caps at 1500/192)

Chi.speakeasy.net - TEST
2002-07-30 00:45:57 EST: 472 / 73
Your download speed : 472761 bps, or 472 kbps.
A 57.7 KB/sec transfer rate.
Your upload speed : 73286 bps, or 73 kbps

Ka|ibur


wut r ur OS also do the analyzer test http://forums.speedguide.net:8117/

then post it up.. then Lobo or Mnosteele52 will help u

TCP options string = 020405b401010402

MTU = 1500
MTU is fully optimized for broadband.

MSS = 1460
Maximum useful data in each packet = 1460, which equals MSS.

Default Receive Window (RWIN) = 27740
RWIN Scaling (RFC1323) = 0 bits
Unscaled Receive Window = 27740
RWIN is a multiple of MSS
Other values for RWIN that might work well with your current MTU/MSS:
513920 (MSS x 44 * scale factor of 8)
256960 (MSS x 44 * scale factor of 4)
128480 (MSS x 44 * scale factor of 2)
64240 (MSS x 44)

bandwidth * delay product:
Your RcvWindow limits you to: 1109.6 kbps (138.7 KBytes/s) @ 200ms
Your RcvWindow limits you to: 443.84 kbps (55.48 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 31 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 01011100
Precedence (priority) = 010 (immediate)
Delay = 1 (low delay)
Throughput = 1 (high throughput)
Reliability = 1 (high reliability)
Cost = 0 (normal cost)

Specs:

Athlon 800
256 RAM
45G HD
ROGERS@HOME
WinXP Pro

I gather that DefaultReceiveWindow, GlobalMaxTcpWindowSize, and TcpWindowSize all remain the same value, right?

Ka|ibur, try settings below in help thread

Using Lobo's settings

DefaultReceiveWindow= 256960
DefaultSendWindow=40960
InitialLargeBufferCount=1000
InitialMediumBufferCount=3000
InitialSmallBufferCount=5000
LargeBufferSize=409600
MaxFastTransmit= 64
with 481800 in MaxFastTransmit
MediumBufferSize=150400
PriorityBoost=0
SmallBufferSize=16384
TransmitWorker=32
FastSendDatagramThreshold=8192
EnableFastRouteUp=1
EnablePMTULookup=1
IgnorePushOnReceives= 0
GlobalmaxTcpWindowSize= 256960
MaxFreeTcbs= 8000
MaxHashTableSize= 32768
MaxNormLookupMemory=5000000
SackOpts=1
SynAttackProtect= 1
TcpMaxDupAcks=2
TcpRecvSegmentSize=1460
TcpSendSegmentSize=1460
TcpTimedWaitDelay=30
TcpUserRFC1122UrgentPointer=0
Recieve Window= 256960
DisableTOSUserSetting=0
DefaultTOSValue=92


Atl.speakeasy.net
2002-07-30 14:49:25 EST: 974 / 117
Your download speed : 974384 bps, or 974 kbps.
A 118.9 KB/sec transfer rate.
Your upload speed : 117647 bps, or 117 kbps

What else can I do?

You need to quit relying on those online tests for one do real download test and do you have system restore on or and other speed programs installed:



In IE, go to Tools, internet options, connection tab at top, LAN settings at bottom, nothing should be checked in this box, NOTHING, No auto detect, no proxy, no automatic configuration script, NOTHING, REBOOT





Try these setting, they're new:

https://www.speedguide.net/forums/ ... adid=85894

Nothing is checked, and I rebooted. Things looking good, but maybe I should get some specific settings for my caps? I heard someone say ROGERS@HOME is now capped at 1500/192
Your settings work nice Lobo

[edit: typos]

Your CAPS may be here:

http://www.pcworld.com/features/article ... g,7,00.asp



New settings just out, in help thread

Ka|ibur
http://www.canadiancontent.net/commtr/itemid150.html




Make sure system restore is off, firewalls, virus scanners, ICQ & AIM everything

gawd damn it.

Look around for better ISP?

I was thinking about DSL, but sympatico has a 5G/Month Limit, maybe I'll shop around, I dunno cuz I'm just gonna use it for another year or so then I'll be off somewhere else for university I just use it for gaming mostly.

I remember someone was telling be about AEI (piranah I think) I called them and they told me I had to buy their aDSL modem, for like $150 CND ... so I was like... pfft forget that! So I'm still here with Rogers hoping that if I smash the modem with a hammer a few times, It might go faster they're speed holes!

Above, running programs

Make sure system restore is off, firewalls, virus scanners, ICQ & AIM everything

What values would i put into cablebut? my isp is attbi and i've never known what their caps are, which probably isn't a good thing i would really like someone to tell me what my caps are.

Last page: CAPS may be here:

http://www.pcworld.com/features/article ... g,7,00.asp


Settings see in help thread below

Originally posted by wangnan
Try to set BufferMultiplier = 1460
and
DefaultReceiveWindow = 513920
DefaultSendWindow = 64240


---
Rogers ATT@Home(1500/192)

Wrong...... that's the whole point of this thread to let everyone know we have been configuring these values incorrectly just as you just showed.

Originally posted by drewwpb
mnosteele52...I need your help , Please...I have been learning from you and trying the settings you post but I am getting lost with these new settings. Could you give me a good base to start with using the new XP tweak. I have ADSL/PPPoE, 1500/256 , XP Home...I see that most of the settings are for Cable or DSL with an MTU of 1500 but I have 1492....If I left something out just let me know...Thanks for your time..


Drew...

Try the following:

DefaultReceiveWindow = 192512
DefaultSendWindow = 32768
DisableAddressSharing = 1
InitialLargeBufferCount = 1000
InitialMediumBufferCount = 3000
InitialSmallBufferCount = 5000
LargeBufferSize = 409600
MaxFastTransmit = 64
MediumBufferSize = 150400
PriorityBoost = 0
SmallBufferSize = 6400
TransmitWorker = 32
FastSendDatagramThreshold = 4096
EnableFastRouteLookup = 1
EnablePMTUDiscovery = 1
IgnorePushBitsOnReceive = 0
GlobalMaxTcpWindowSize = 27588 or 36300 or 55176 or 74052 or 92928
MaxFreeTcbs = 8000
MaxHashTableSize = 16384
MaxNormLookupMemory = 5000000
SackOpts = 1
SynAttackProtect = 1
Tcp1323Opts = 0 (set to 1 if RWIN is 65535 or higher)
TcpMaxDupAcks = 2
TcpRecvSegmentSize = 1460
TcpSendSegmentSize = 1460
TcpTimedWaitDelay = 30
TcpUseRFC1122UrgentPointer = 0
TcpWindowSize = 27588 or 36300 or 55176 or 74052 or 92928
MaxConnectionsPer1_0Server = 40
MaxConnectionsPerServer = 20
DefaultTTL = 64
DisableUserTOSSetting = 0
DefaultTOSValue = 44

hey steele if im using roadrunner (caps 2000/768 according to lobos website post) using winxp and cable modem what do i put for recieve window and send? what do that convert to in kilobytes?

Hey Vic (I love that name ) try the following:

DefaultRecvWindow - 256000
DefaultSendWindow - 98304

And also make this a reg file and merge it into your registry:

************begin copy and paste***********
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\AFD\Parameters]
"BufferMultiplier"=dword:00000400

************end copy and paste***********

Below are the parameters everyone is getting confused about, these parameters are for 2K & XP ONLY and the entire AFD key is not in your registry by default. The definitions below are from the Microsoft 2000 White Papers. Don't make it any more difficult than it must be do find the proper value for your particular connection for these parameters. Cablenut will not install the parameter BufferMultiplier so it must be added manually and given a value of 1024 which is 400 hexidecimal. To configure your DefaultRecvWindow & DefaultSendWindow just take your ISPs caps in kilobytes and multiply them by 1024 - it's that easy. To find the proper value for your GlobalMaxTcpWindowSize & TcpWindowSize just ping about 10 of your favorite sites and use the calculator here, it makes it very easy. From mnosteele, I don't do it this way

hehe thanks steele. i do have another question tho. looking at what others posted i noticed my InitialLargeBufferCount (and medium/small) were low. large is 50, med 100, small 150. also my large buffer size is 40960, medium is 15040, and small is 256. is this correct? if not what should they be? and do i leave GlobalMaxTcpWindowSize and TcpWindowSize at 51100? thanks for help

I suggest using the following for the buffers:

InitialLargeBufferCount = 1000
InitialMediumBufferCount = 3000
InitialSmallBufferCount = 5000
LargeBufferSize = 409600
MaxFastTransmit = 64 not a buffer but the proper value
MediumBufferSize = 150400
SmallBufferSize = 6400

And yes leave your GlobalMaxTcpWindowSize & TcpWindowSize at 51100.

It's not steele, try, it's new and quick:


https://www.speedguide.net/forums/ ... adid=85894

Thanks Steele I will start with that , it is pretty much the area I have been trying. I have one question about this entry :

TcpRecvSegmentSize = 1460
TcpSendSegmentSize = 1460

Does the 1460 come from the MSS of the MTU of 1500 ??? If so would it be 1452 for PPPoE / 1492 ???? Or is it something totally different ?


Drew...

I believe it would be 1452 for PPPoE

Start another thread this ones over, lol

Originally posted by drewwpb
Thanks Steele I will start with that , it is pretty much the area I have been trying. I have one question about this entry :

TcpRecvSegmentSize = 1460
TcpSendSegmentSize = 1460

Does the 1460 come from the MSS of the MTU of 1500 ??? If so would it be 1452 for PPPoE / 1492 ???? Or is it something totally different ?


Drew...

I'm sorry, my mistake you are correct 1452.

Thanks Guys for the Clear up...


Drew...

Great job mnosteele. After reading the MS Wndows 2000/XP White Pages many times I had always wondered why the BufferMultiplier had a default of 512. It never dawned on me that the default values for DefaultReceive and Send windows were not multipules of MSS.

I test both the new and old settings and found that while my download speeds were the same (375-385 kbytes) my upload speeds did increase from 272 to 289 kbits. Montoring my speeds with NetStat Live they were much more stable with the new settings verses the old ones. Haven't done any ping testing to see if they have stablized but will when I find the time.

I do have one question though. Should Small, Medium and LargeBufferSize also be a multipule of 1024?

Thanks earthmofo , that's exactly what Dannjr said about what the values do - stabilize your speed, they may increase it but mainly it stabilizes it. As for the AFD buffers they can be whatever value you like, they are just the amount of RAM you assign to use for the buffers.