WEB100 Enabled Statistics:
Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done
checking for firewalls . . . . . . . . . . . . . . . . . . . Done
running 10s outbound test (client-to-server [C2S]) . . . . . 77.0kb/s
running 10s inbound test (server-to-client [s2C]) . . . . . . 331.84kb/s
------ Client System Details ------
OS data: Name = Windows XP, Architecture = x86, Version = 5.1
Java data: Vendor = Sun Microsystems Inc., Version = 1.5.0_11
------ 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 = 211.16 msec; the Packet size = 1460 Bytes; and
There were 6 packets retransmitted, 39 duplicate acks received, and 42 SACK blocks received
The connection was idle 0 seconds (0%) of the time
C2S throughput test: Packet queuing detected: 3.75%
S2C throughput test: Packet queuing detected: 11.27%
This connection is network limited 99.85% of the time.
Excessive packet loss is impacting your performance, check the auto-negotiate function on your local PC and network switch
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
Server 'nitro.ucsc.edu' is not behind a firewall. [Connection to the ephemeral port was successful]
Client is probably behind a firewall. [Connection to the ephemeral port failed]
Packet size is preserved End-to-End
Server IP addresses are preserved End-to-End
Information: Network Address Translation (NAT) box is modifying the Client's IP address
Server says [204.95.117.94] but Client says [192.168.1.100]
WEB100 Kernel Variables:
Client: localhost/127.0.0.1
CurMSS: 1460
X_Rcvbuf: 103424
X_Sndbuf: 103424
AckPktsIn: 174
AckPktsOut: 0
BytesRetrans: 8760
CongAvoid: 119
CongestionOverCount: 0
CongestionSignals: 5
CountRTT: 129
CurCwnd: 5840
CurRTO: 440
CurRwinRcvd: 17520
CurRwinSent: 16304
CurSsthresh: 5840
DSACKDups: 0
DataBytesIn: 0
DataBytesOut: 451140
DataPktsIn: 0
DataPktsOut: 309
DupAcksIn: 39
ECNEnabled: 0
FastRetran: 5
MaxCwnd: 14600
MaxMSS: 1460
MaxRTO: 800
MaxRTT: 490
MaxRwinRcvd: 17520
MaxRwinSent: 16304
MaxSsthresh: 5840
MinMSS: 1460
MinRTO: 410
MinRTT: 140
MinRwinRcvd: 17520
MinRwinSent: 16304
NagleEnabled: 1
OtherReductions: 1
PktsIn: 174
PktsOut: 309
PktsRetrans: 6
RcvWinScale: 2147483647
SACKEnabled: 3
SACKsRcvd: 42
SendStall: 0
SlowStart: 8
SampleRTT: 210
SmoothedRTT: 210
SndWinScale: 2147483647
SndLimTimeRwin: 0
SndLimTimeCwnd: 10695988
SndLimTimeSender: 16404
SndLimTransRwin: 0
SndLimTransCwnd: 1
SndLimTransSender: 1
SndLimBytesRwin: 0
SndLimBytesCwnd: 451140
SndLimBytesSender: 0
SubsequentTimeouts: 0
SumRTT: 27240
Timeouts: 0
TimestampsEnabled: 0
WinScaleRcvd: 2147483647
WinScaleSent: 2147483647
DupAcksOut: 0
StartTimeUsec: 972125
Duration: 10711283
c2sData: 2
c2sAck: 2
s2cData: 9
s2cAck: 2
half_duplex: 0
link: 100
congestion: 1
bad_cable: 0
mismatch: 0
spd: 0.34
bw: 0.41
loss: 0.016181230
avgrtt: 211.16
waitsec: 0.00
timesec: 10.00
order: 0.2241
rwintime: 0.0000
sendtime: 0.0015
cwndtime: 0.9985
rwin: 0.1337
swin: 0.7891
cwin: 0.1114
rttsec: 0.211163
Sndbuf: 103424
aspd: 0.00000
CWND-Limited: 113.74
The theoretical network limit is 0.41 Mbps
The NDT server has a 50.0 KByte buffer which limits the throughput to 3.73 Mbps
Your PC/Workstation has a 17.0 KByte buffer which limits the throughput to 0.63 Mbps
The network based flow control limits the throughput to 0.52 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'