ndt-users list created

[Martyn Cheatle <>]

Title: Outputs

Is there a site I can visit that will show me what each of the below outputs mean, for example take AckPktsIn: 5663, AckPktsOut: 0

I need to know how to read them to see if they are good or bad results

Regards

Martyn

WEB100 Kernel Variables:
Client: localhost/127.0.0.1
AckPktsIn: 5663
AckPktsOut: 0
BytesRetrans: 29200
CongAvoid: 4208
CongestionOverCount: 0
CongestionSignals: 19
CountRTT: 5072
CurCwnd: 29200
CurMSS: 1460
CurRTO: 224
CurRwinRcvd: 65535
CurRwinSent: 5840
CurSsthresh: 27740
DSACKDups: 0
DataBytesIn: 0
DataBytesOut: 17600250
DataPktsIn: 0
DataPktsOut: 11625
DupAcksIn: 572
ECNEnabled: 0
FastRetran: 19
MaxCwnd: 65700
MaxMSS: 1460
MaxRTO: 236
MaxRTT: 50
MaxRwinRcvd: 65535
MaxRwinSent: 5840
MaxSsthresh: 51100
MinMSS: 1460
MinRTO: 222
MinRTT: 21
MinRwinRcvd: 48015
MinRwinSent: 5840
NagleEnabled: 1
OtherReductions: 7
PktsIn: 5665
PktsOut: 11628
PktsRetrans: 20
X_Rcvbuf: 33554432
RcvWinScale: 2147483647
SACKEnabled: 3
SACKsRcvd: 583
SendStall: 0
SlowStart: 343
SampleRTT: 23
SmoothedRTT: 24
X_Sndbuf: 33554432
SndWinScale: 2147483647
SndLimTimeRwin: 932986
SndLimTimeCwnd: 11058774
SndLimTimeSender: 20959
SndLimTransRwin: 4
SndLimTransCwnd: 5
SndLimTransSender: 1
SndLimBytesRwin: 1716876
SndLimBytesCwnd: 15887916
SndLimBytesSender: 0
SubsequentTimeouts: 0
SumRTT: 143304
Timeouts: 0
TimestampsEnabled: 0
WinScaleRcvd: 2147483647
WinScaleSent: 2147483647
DupAcksOut: 0
StartTimeUsec: 747146
Duration: 12020338
c2sData: 2
c2sAck: 2
s2cData: 6
s2cAck: 4
half_duplex: 1
link: 0
congestion: 0
bad_cable: 0
mismatch: 0
spd: 0.00
bw: 9.75
loss: 0.001633987
avgrtt: 28.25
waitsec: 0.00
timesec: 12.00
order: 0.1010
rwintime: 0.0777
sendtime: 0.0017
cwndtime: 0.9206
rwin: 0.5000
swin: 256.0000
cwin: 0.5013
rttsec: 0.028254
Sndbuf: 33554432
aspd: 21.71750

Checking for mismatch on uplink
        (speed > 50 [0>50], (xmitspeed < 5) [1.03<5]
        (rwintime > .9) [0.07>.9], (loss < .01) [0.00<.01]
Checking for excessive errors condition
        (loss/sec > .15) [1.36>.15], (cwndtime > .6) [0.92>.6],
        (loss < .01) [0.00<.01], (MaxSsthresh > 0) [51100>0]
Checking for 10 Mbps link
        (speed < 9.5) [0<9.5], (speed > 3.0) [0>3.0]
        (xmitspeed < 9.5) [1.03<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 [9.75>50], (Rwintime > 90) [0.07>.90]
         (RwinTrans/CwndTrans = 1) [4/5=1], (mylink > 0) [3.0>0]
Checking for DSL/Cable Modem link
        (speed < 2) [0<2], (SndLimTransSender = 0) [1=0]
         (SendTime = 0) [0.0017=0], (mylink > 0) [3.0>0]
Checking for half-duplex condition
        (rwintime > .95) [0.07>.95], (RwinTrans/sec > 30) [0.33>30],
         (SenderTrans/sec > 30) [0.08>30], OR (mylink <= 10) [3.0<=10]
Checking for congestion
        (cwndtime > .02) [0.92>.02], (mismatch = 0) [0=0]
        (MaxSsthresh > 0) [51100>0]

estimate = 9.75 based on packet size = 11Kbits, RTT = 28.25msec, and loss = 0.001633987
The theoretical network limit is 9.75 Mbps
The NDT server has a 32768.0 KByte buffer which limits the throughput to 9060.66 Mbps
Your PC/Workstation has a 63.0 KByte buffer which limits the throughput to 17.69 Mbps
The network based flow control limits the throughput to 17.74 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 'T3'

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