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[Wesker]

TCP/Web100 Network Diagnostic Tool v5.3.3d

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Another client is currently being served, your test will begin within 45 seconds

Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done

running 10s outbound test (client to server) . . . . . 228.10Kb/s

running 10s inbound test (server to client) . . . . . . 916.79kb/s

Your PC is connected to a Cable/DSL modem

Information: Other network traffic is congesting the link

Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done

running 10s outbound test (client to server) . . . . . 228.10Kb/s

running 10s inbound test (server to client) . . . . . . 916.79kb/s

------  Client System Details  ------

OS data: Name = Windows XP, Architecture = x86, Version = 5.1

Java data: Vendor = Sun Microsystems Inc., Version = 1.4.2_06

------  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 = 509.88 msec; the Packet size = 1380 Bytes; and

There were 38 packets retransmitted, 152 duplicate acks received, and 181 SACK blocks received

The connection was idle 0 seconds (0%) of the time

This connection is network limited 99.69% of the time.

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: ON

Information: Network Middlebox is modifying MSS variable

Server IP addresses are preserved End-to-End

Client IP addresses are preserved End-to-End

WEB100 Kernel Variables:

Client: localhost/127.0.0.1

AckPktsIn: 512

AckPktsOut: 0

BytesRetrans: 52440

CongAvoid: 187

CongestionOverCount: 0

CongestionSignals: 2

CountRTT: 330

CurCwnd: 40020

CurMSS: 1380

CurRTO: 650

CurRwinRcvd: 258060

CurRwinSent: 5840

CurSsthresh: 38640

DSACKDups: 0

DataBytesIn: 0

DataBytesOut: 1248900

DataPktsIn: 0

DataPktsOut: 905

DupAcksIn: 152

ECNEnabled: 0

FastRetran: 2

MaxCwnd: 144900

MaxMSS: 1380

MaxRTO: 1030

MaxRTT: 770

MaxRwinRcvd: 258060

MaxRwinSent: 5840

MaxSsthresh: 71760

MinMSS: 1380

MinRTO: 290

MinRTT: 80

MinRwinRcvd: 64515

MinRwinSent: 5840

NagleEnabled: 1

OtherReductions: 0

PktsIn: 512

PktsOut: 905

PktsRetrans: 38

X_Rcvbuf: 107520

RcvWinScale: 7

SACKEnabled: 3

SACKsRcvd: 181

SendStall: 0

SlowStart: 141

SampleRTT: 310

SmoothedRTT: 370

X_Sndbuf: 107520

SndWinScale: 2

SndLimTimeRwin: 0

SndLimTimeCwnd: 10133213

SndLimTimeSender: 31072

SndLimTransRwin: 0

SndLimTransCwnd: 1

SndLimTransSender: 1

SndLimBytesRwin: 0

SndLimBytesCwnd: 1248900

SndLimBytesSender: 0

SubsequentTimeouts: 0

SumRTT: 168260

Timeouts: 0

TimestampsEnabled: 0

WinScaleRcvd: 2

WinScaleSent: 7

DupAcksOut: 0

StartTimeUsec: 846863

Duration: 10167186

c2sData: 2

c2sAck: 2

s2cData: 9

s2cAck: 2

half_duplex: 0

link: 100

congestion: 1

bad_cable: 0

mismatch: 0

spd: 0.00

bw: 0.44

loss: 0.002209945

avgrtt: 509.88

waitsec: 0.00

timesec: 10.00

order: 0.2969

rwintime: 0.0000

sendtime: 0.0031

cwndtime: 0.9969

rwin: 1.9688

swin: 64.0000

cwin: 1.1055

rttsec: 0.509879

Sndbuf: 8388608

aspd: 4.43207

Checking for mismatch on uplink

(speed > 50 [0>50], (xmitspeed < 5) [0.22<5]

(rwintime > .9) [0>.9], (loss < .01) [0.00<.01]

Checking for excessive errors condition

(loss/sec > .15) [2.20>.15], (cwndtime > .6) [0.99>.6],

(loss < .01) [0.00<.01], (MaxSsthresh > 0) [71760>0]

Checking for 10 Mbps link

(speed < 9.5) [0<9.5], (speed > 3.0) [0>3.0]

(xmitspeed < 9.5) [0.22<9.5] (loss < .01) [0.00<.01], (mylink > 0) [3.0>0]

Checking for Wireless link

(sendtime = 0) [0.00=0], (speed < 5) [0<5]

(Estimate > 50 [0.44>50], (Rwintime > 90) [0>.90]

(RwinTrans/CwndTrans = 1) [0/1=1], (mylink > 0) [3.0>0]

Checking for DSL/Cable Modem link

(speed < 2) [0<2], (SndLimTransSender = 0) [1=0]

(SendTime = 0) [0.0031=0], (mylink > 0) [3.0>0]

Checking for half-duplex condition

(rwintime > .95) [0>.95], (RwinTrans/sec > 30) [0>30],

(SenderTrans/sec > 30) [0.1>30], OR (mylink <= 10) [3.0<=10]

Checking for congestion

(cwndtime > .02) [0.99>.02], (mismatch = 0) [0=0]

(MaxSsthresh > 0) [71760>0]

estimate = 0.44 based on packet size = 10Kbits, RTT = 509.88msec, and loss = 0.002209945

The theoretical network limit is 0.44 Mbps

The NDT server has a 8192.0 KByte buffer which limits the throughput to 125.51 Mbps

Your PC/Workstation has a 252.0 KByte buffer which limits the throughput to 3.86 Mbps

The network based flow control limits the throughput to 2.16 Mbps

Client Data reports link is 'T1', Client Acks report link is 'T1'

Server Data reports link is '10 Gig', Server Acks report link is 'T1'