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registry parameters problem

jaeger — Sat, 19 Jul 2003 18:37:29 GMT

http://ny-monitor.dslreports.com/tweak/block:3526bb9?service=cable&speed=1537&os=winXP&via=normal

this is what I get a dslreports, I have dl-ed dr.tcpip but it just doesnt change.

So I altered it in my registry coz I thought maybe dr.tcpip wouldnt work, but still the same problem.........no selective acks, mtu 40.....

I changed everything in my regestry like they say and when i reboot and run the tweaktest I get the same thing everytime.

I dont know what I did or how I did it, but I dont know if my registry is dmaged coz the registry says I chenged it but when I go check at dslreports it says something else and I know there isnt anything wrong with their site/tests.

Anyone knows what the problem might b?

Thanx in advance.

registry parameters problem

j79zlr — Sat, 19 Jul 2003 18:37:29 GMT

First things first, uninstall DrTCPIP.

Then take a TCP Analyzer test and post the results here.

Then use cablenut to tweak you interent connection, it is far superior to Dr. TCP.

registry parameters problem

mnosteele — Sat, 19 Jul 2003 18:37:29 GMT

Welcome to TweakXP jaeger , do as j79zlr says. Just follow the thread at the top of this forum, it will give you a link to everything you need to know to maximize your connection. It also looks as if you have edited your reigstry improperly and really messed up some settings , don't worry, j79zlr and I will get you straight.

registry parameters problem

jaeger — Sat, 19 Jul 2003 18:37:29 GMT

k heres the result :

and I have cablenut installed, but do not dare to touch it :P

registry parameters problem

mnosteele — Sat, 19 Jul 2003 18:37:29 GMT

You have to copy and paste the results.

registry parameters problem

jaeger — Sat, 19 Jul 2003 18:37:29 GMT

TCP options string = 020405a00103030201010402

MTU = 1480
MTU is optimized for Windows XP PPoE DSL broadband. If not, consider raising MTU to 1500 for optimal throughput.

MSS = 1440
MSS is optimized for Windows XP PPPoE DSL broadband. If not, consider raising MTU to 1500 for maximum throughput.

Default Receive Window (RWIN) = 256960
RWIN Scaling (RFC1323) = 2 bits
Unscaled Receive Window = 64240

For optimum performance, consider changing RWIN to a multiple of MSS.
Other values for RWIN that might work well with your current MTU/MSS:
506880 (MSS x 44 * scale factor of 8)
253440 (MSS x 44 * scale factor of 4)
126720 (MSS x 44 * scale factor of 2)
63360 (MSS x 44)

bandwidth * delay product:

Your RcvWindow limits you to: 10278.4 kbps (1284.8 KBytes/s) @ 200ms
Your RcvWindow limits you to: 4111.36 kbps (513.92 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 113 hops

TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349) = 00000000

registry parameters problem

mnosteele — Sat, 19 Jul 2003 18:37:29 GMT

OK did you read the Broadband Connection Tweaking thread in the Common Questions Forum? If not please do it will explain everything you need to know to optimize your connection. You might want to try the following settings in CableNut, but to fine tune them follow the instructions in the link I just gave you.

DefaultReceiveWindow = 192000
DefaultSendWindow = 16384
DisableAddressSharing = 1
InitialLargeBufferCount = 200
InitialMediumBufferCount = 480
InitialSmallBufferCount = 640
LargeBufferSize = 819200
MaxFastTransmit = 64000
MediumBufferSize = 150400
PriorityBoost = 0
SmallBufferSize = 12800
TransmitWorker = 32
FastSendDatagramThreshold = 4096
EnableFastRouteLookup = 1
EnablePMTUDiscovery = 1
IgnorePushBitsOnReceive = 0
GlobalMaxTcpWindowSize = 37440
MaxFreeTcbs = 8000
MaxHashTableSize = 16384
MaxNormLookupMemory = 5000000
SackOpts = 1
SynAttackProtect = 1
Tcp1323Opts = 0
TcpLogLevel = 1
TcpMaxDupAcks = 3
TcpMaxHalfOpen = 100
TcpMaxHalfRetried = 80
TcpRecvSegmentSize = 1440
TcpSendSegmentSize = 1440
TcpTimedWaitDelay = 30
TcpUseRFC1122UrgentPointer = 0
TcpWindowSize = 37440
MaxConnectionsPer1_0Server = 20
MaxConnectionsPerServer = 10
DefaultTTL = 64
DisableUserTOSSetting = 0
TcpMaxDataRetransmissions = 6
DefaultTOSValue = 90

These settings are based on your caps and a maximum anticipated latency of 200ms.

registry parameters problem

jaeger — Sat, 19 Jul 2003 18:37:29 GMT

I just did the bct, very cool.

my latency is 140 though, so ill put in the info you gave me.

thanx a bunch

registry parameters problem

jaeger — Sat, 19 Jul 2003 18:37:29 GMT

I just filled it in and saved it to my registry, thats it right?

sry for being a noob and asking while I should b reading

TCP options string = 020405a001010402

MTU = 1480
MTU is optimized for Windows XP PPoE DSL broadband. If not, consider raising MTU to 1500 for optimal throughput.

MSS = 1440
MSS is optimized for Windows XP PPPoE DSL broadband. If not, consider raising MTU to 1500 for maximum throughput.

Default Receive Window (RWIN) = 37440
RWIN Scaling (RFC1323) = 0 bits
Unscaled Receive Window = 37440

RWIN is a multiple of MSS
Other values for RWIN that might work well with your current MTU/MSS:
506880 (MSS x 44 * scale factor of 8)
253440 (MSS x 44 * scale factor of 4)
126720 (MSS x 44 * scale factor of 2)
63360 (MSS x 44)

bandwidth * delay product:

Your RcvWindow limits you to: 1497.6 kbps (187.2 KBytes/s) @ 200ms
Your RcvWindow limits you to: 599.04 kbps (74.88 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 49 hops

TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349) = 01011010

Precedence (priority) = 010 (immediate)
Delay = 1 (low delay)
Throughput = 1 (high throughput)
Reliability = 0 (normal reliability)
Cost = 1 (low cost)

and:

kbps

257

513

769

1025

1281

1537

1793

2049

ugh

«33.6k modem download speed

ugh

«typical 56k modem download speed

slow

«single channel ISDN

bearable

«dual channel ISDN

«IDSL

«150k Video Stream

«Fastest multiplayer games

fast

«192k 'near CD quality' MP3

faster

«300k Video Stream

rocks

«half megabit

awesome

«1mbit barrier

your
download

«1448 kbps

your
upload

«169 kbps

insane

(2mbit barrier not shown)

dude!

(5mbit barrier not shown)

=Your tested speed (grey = est. TCP transfer overhead)

registry parameters problem

mnosteele — Sat, 19 Jul 2003 18:37:29 GMT

Your speed and settings look AWESOME , your gettings over 90% of your caps. The only other thing I would suggest is follow the other things in the link I provided.

registry parameters problem

jaeger — Sat, 19 Jul 2003 18:37:29 GMT

did that 2, all the registry inputs, etc.

thanx again man!