OS and Software > Broadband Tweaks > [DSL] win98 Laptop d/ling ~500k faster than XP desktop.

reply to Irish Shark

Re: [DSL] win98 Laptop d/ling ~500k faster than XP

from here: »miranda.ctd.anl.gov:7123/

WEB100 Enabled Statistics:
Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done
running 10s outbound test (client to server) . . . . . 350.04Kb/s
running 10s inbound test (server to client) . . . . . . 2.13Mb/s

------ Client System Details ------
OS data: Name = Windows XP, Architecture = x86, Version = 5.1
Java data: Vendor = Sun Microsystems Inc., Version = 1.4.1_02

------ Web100 Detailed Analysis ------
Cable modem/DSL/T1 link found.
Link set to Full Duplex mode
Information: throughput is limited by other network traffic.
Good network cable(s) found
Normal duplex operation found.

Web100 reports the Round trip time = 101.64 msec; the Packet size = 1380 Bytes; and
There were 40 packets retransmitted, 53 duplicate acks received, and 84 SACK blocks received
The connection was idle 0 seconds (0%) of the time
This connection is network limited 99.85% of the time.
Contact your local network administrator to report a network problem

Web100 reports TCP negotiated the optional Performance Settings to:
RFC 2018 Selective Acknowledgment: ON
RFC 896 Nagle Algorithm: ON
RFC 3168 Explicit Congestion Notification: OFF
RFC 1323 Time Stamping: OFF
RFC 1323 Window Scaling: OFF
Information: Network Middlebox is modifying MSS variable
Server IP addresses are preserved End-to-End

WEB100 Kernel Variables:
Client: localhost/127.0.0.1
AckPktsIn: 1035
AckPktsOut: 0
BytesRetrans: 55200
CongAvoid: 912
CongestionOverCount: 0
CongestionSignals: 3
CountRTT: 950
CurCwnd: 23460
CurMSS: 1380
CurRTO: 300
CurRwinRcvd: 65340
CurRwinSent: 5840
CurSsthresh: 19320
DSACKDups: 0
DataBytesIn: 0
DataBytesOut: 2722740
DataPktsIn: 0
DataPktsOut: 1973
DupAcksIn: 53
ECNEnabled: 0
FastRetran: 3
MaxCwnd: 38640
MaxMSS: 1380
MaxRTO: 340
MaxRTT: 170
MaxRwinRcvd: 65340
MaxRwinSent: 5840
MaxSsthresh: 19320
MinMSS: 1380
MinRTO: 280
MinRTT: 80
MinRwinRcvd: 65340
MinRwinSent: 5840
NagleEnabled: 1
OtherReductions: 0
PktsIn: 1036
PktsOut: 1973
PktsRetrans: 40
X_Rcvbuf: 65535
SACKEnabled: 3
SACKsRcvd: 84
SendStall: 0
SlowStart: 36
SampleRTT: 90
SmoothedRTT: 90
X_Sndbuf: 65535
SndLimTimeRwin: 0
SndLimTimeCwnd: 10021333
SndLimTimeSender: 14274
SndLimTransRwin: 0
SndLimTransCwnd: 1
SndLimTransSender: 1
SndLimBytesRwin: 0
SndLimBytesCwnd: 2725500
SndLimBytesSender: 0
SubsequentTimeouts: 0
SumRTT: 96560
Timeouts: 0
TimestampsEnabled: 0
WinScaleRcvd: 2147483647
WinScaleSent: 2147483647
DupAcksOut: 0
StartTimeUsec: 687762
Duration: 10052675
c2sData: 2
c2sAck: 2
s2cData: 6
s2cAck: 3

Checking for mismatch condition
(cwndtime > .3) [0.99>.3], (MaxSsthresh > 0) [19320>0],
(PktsRetrans/sec > 2) [4.0>2], (estimate > 2) [2.65>2]
Checking for mismatch on uplink
(speed > 50 [2.17>50], (xmitspeed .9) [0>.9], (loss .15) [1.52>.15], (cwndtime > .6) [0.99>.6],
(loss 0) [19320>0]
Checking for 10 Mbps link
(speed 3.0) [2.17>3.0]
(xmitspeed 0) [100>0]
Checking for Wireless link
(sendtime = 0) [0.00=0], (speed 50 [2.65>50], (Rwintime > 90) [0>.90]
(RwinTrans/CwndTrans = 1) [0/1=1], (link > 0) [100>0]
Checking for DSL/Cable Modem link
(speed 0) [100>0]
Checking for half-duplex condition
(rwintime > .95) [0>.95], (RwinTrans/sec > 30) [0>30],
(SenderTrans/sec > 30) [0.10>30], OR (link .02) [0.99>.02], (mismatch = 0) [0=0]
(MaxSsthresh > 0) [19320>0]

bw = 2.65 based on packet size = 10Kbits, RTT = 101.64msec, and loss = 0.0015205270610749722
The theoretical network limit is 2.65 Mbps
The transmit buffer (63.0 KByte) limits the application to 4.91 Mbps
Your receive buffer (63.0 KByte) limits the application to 4.90 Mbps
The network based flow control limits the application to 2.90 Mbps

Client Data reports link is 'T1', Client Acks report link is 'T1'
Server Data reports link is 'OC-12', Server Acks report link is 'Ethernet'

__________________________
sorry for huge post
--
Power corrupts. Absolute power is kinda neat.

reply to krobar
Is that the Miranda Speed Test? If so, I was going to post that. Now, be careful on some of the things that it reports. It does not apply or is off into the wild blue.
--
“Ninety percent of the game is half mental.” Yogi Berra

yeah I have no idea what a lot of it means, was hoping there might be a clue maybe? lol
--
Power corrupts. Absolute power is kinda neat.

I have been trying to figure out what is amiss here. I compared my results with yours and others.

What I see is the MaxCwnd: 38640 is too low. It should be close to or above your RWIN. This is also low CurCwnd: 23460. However, I cannot find a way to fix it.
--
“Ninety percent of the game is half mental.” Yogi Berra

oh, my rwin is still set to 14730 at the time that was done I believe.
--
Power corrupts. Absolute power is kinda neat.

No, the RWIN is CurRwinRcvd: 65340

oh ok heh. wasn't sure, I know I've still got it on the lower number you suggested now
--
Power corrupts. Absolute power is kinda neat.

well, if nothing else, I may this weekend try a repair install of XP. Dunno if it'll help, but Im out of other ideas. If that doesn't work I'll be backup a lot of data (hope I have enough cd's laying around) and trying a reformat and install.
--
Power corrupts. Absolute power is kinda neat.

Are you sure you did this?

This will reset the registry to default TCP/IP values.

Open a Command Prompt and type:
netsh int ip reset c:\resetlog.txt

Reboot. Set The Doctor Tweaks.

Save, exit, reboot, retest.
--
“Ninety percent of the game is half mental.” Yogi Berra

you know something, I'm not *positive* that I did it in that order, I do know I've done all of those things, lemme try it again and I'll post back in a little while.
--
Power corrupts. Absolute power is kinda neat.

same speeds, here's the tweak test (I didn't apply drtcp fixes at all to it yet)
»ttester.broadbandreports.com/twe···terpppoe

It's already at 1492 (at the router as well as at the modem) and the rwin is already set to what it should be (or so I'm told)

Something I just remembered, right before I upgraded I had downloaded and ran MS's regclean utility, possibly that wiped something out or corrupted something? Of course I stupidly didn't keep a backup registry from then
--
Power corrupts. Absolute power is kinda neat.

Apply the tweaks that are in the link. Save, exit, reboot, retest.
--
“Ninety percent of the game is half mental.” Yogi Berra

I believe I'm confused, what tweaks in which link?
--
Power corrupts. Absolute power is kinda neat.

The one that you posted »ttester.broadbandreports.com/twe···terpppoe
--
“Ninety percent of the game is half mental.” Yogi Berra

that must be pointing to something different for you than it is for me because its' not offering any suggested changes...it says everything's good.
--
Power corrupts. Absolute power is kinda neat.

What I am saying is to apply those tweaks in The Doctor. Then save, exit, reboot, and retest your speed.
--
“Ninety percent of the game is half mental.” Yogi Berra

oh ok, I figured those were already set since they showed up in the tweak test as being the current settings. Only ones I'm not sure of is max duplicate acks, I guess I don't need the dial up mtu setting, and black hole detection?
--
Power corrupts. Absolute power is kinda neat.

Here you go ...
_______________
Set Tcp Receive Window to 63888

Set Windows Scaling, Time Stamping, Selective Acks, Path MTU Discovery, Black Hole Detection to Default.

Leave Max Duplicate Acks and TTL Blank

Save/Exit DrTcp

Reboot
--
“Ninety percent of the game is half mental.” Yogi Berra

no changes