ndt-users list created

[Byron Hicks <>]

On 05/21/2013 09:22 AM, Aaron Brown wrote:
> Hey Byron,
>
> Try
> here: 
> http://desk146.internet2.edu/~aaron/ndt-client-3.6.5.2-rc3.el5.centos.i386.rpm
> <http://desk146.internet2.edu/%7Eaaron/ndt-client-3.6.5.2-rc3.el5.centos.i386.rpm>
>

Great work, folks!

Here is the output:

[root@ps1-akard-dlls
 ~]# web100clt -ll -d -n ps1-hardy-hstn
Testing network path for configuration and performance problems  -- 
Connected!
Client socket created
Using IPv4 address
* New Client, implements queuing feedback
Requesting test suite:
 > Middlebox test
 > Simple firewall test
 > C2S throughput test
 > S2C throughput test
 > META test
 <-- Middlebox test -->
  -- port: 3003
Connected!
Client socket created
Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done
 <-------------------->
 <-- Simple firewall test -->
checking for firewalls . . . . . . . . . . . . . . . . . . . 
  -- port: 33278
  -- time: 1
  -- oport: 40991
Connected!
Client socket created
Done
 <-------------------------->
 <-- C2S throughput test -->
  -- port: 3002
Connected!
Client socket created
running 10s outbound test (client to server) . . . . .  7999.18 Mb/s
 <------------------------->
 <-- S2C throughput test -->
  -- port: 3003
Connected!
Client socket created
running 10s inbound test (server to client) . . . . . . 8284.18 Mb/s
 <------------------------->
 <-- META test -->
sending meta information to server . . . . . Done
 <------------------------->
Server unable to determine bottleneck link type.
Information: Other network traffic is congesting the link
Server 'ps1-hardy-hstn' is not behind a firewall. [Connection to the
ephemeral port was successful]
Client is not behind a firewall. [Connection to the ephemeral port was
successful]

    ------  Web100 Detailed Analysis  ------

Web100 reports the Round trip time = 6.85 msec;the Packet size = 8948
Bytes; and
No packet loss was observed.
This connection is sender limited 97.46% of the time.
This connection is network limited 2.14% 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: ON
RFC 1323 Window Scaling: ON; Scaling Factors - Server=10, Client=10
The theoretical network limit is 9959.90 Mbps
The NDT server has a 14082 KByte buffer which limits the throughput to
16051.66 Mbps
Your PC/Workstation has a 12288 KByte buffer which limits the throughput
to 14006.42 Mbps
The network based flow control limits the throughput to 9004.10 Mbps

Client Data reports link is ' -1', Client Acks report link is ' -1'
Server Data reports link is ' -1', Server Acks report link is ' -1'
Packet size is preserved End-to-End
Information: Network Address Translation (NAT) box is modifying the
Server's IP address
    Server says [::ffff:74.200.187.98] but Client says [ 74.200.187.98]
Information: Network Address Translation (NAT) box is modifying the
Client's IP address
    Server says [::ffff:74.200.187.90] but Client says [ 74.200.187.90]
CurMSS: 8948
X_Rcvbuf: 87380
X_Sndbuf: 14420288
AckPktsIn: 208878
AckPktsOut: 0
BytesRetrans: 0
CongAvoid: 0
CongestionOverCount: 0
CongestionSignals: 0
CountRTT: 208879
CurCwnd: 8088992
CurRTO: 207
CurRwinRcvd: 12433408
CurRwinSent: 18432
CurSsthresh: 2147483647
DSACKDups: 0
DataBytesIn: 0
DataBytesOut: 2147483647
DataPktsIn: 0
DataPktsOut: 1158036
DupAcksIn: 0
ECNEnabled: 0
FastRetran: 0
MaxCwnd: 8088992
MaxMSS: 8948
MaxRTO: 208
MaxRTT: 13
MaxRwinRcvd: 12582912
MaxRwinSent: 18432
MaxSsthresh: 0
MinMSS: 8928
MinRTO: 206
MinRTT: 6
MinRwinRcvd: 18432
MinRwinSent: 17896
NagleEnabled: 1
OtherReductions: 0
PktsIn: 208878
PktsOut: 1158036
PktsRetrans: 0
RcvWinScale: 10
SACKEnabled: 3
SACKsRcvd: 0
SendStall: 0
SlowStart: 0
SampleRTT: 7
SmoothedRTT: 7
SndWinScale: 10
SndLimTimeRwin: 40646
SndLimTimeCwnd: 221064
SndLimTimeSender: 10058418
SndLimTransRwin: 6
SndLimTransCwnd: 49
SndLimTransSender: 48
SndLimBytesRwin: 89800
SndLimBytesCwnd: 47773600
SndLimBytesSender: 2147483647
SubsequentTimeouts: 0
SumRTT: 1431713
Timeouts: 0
TimestampsEnabled: 1
WinScaleRcvd: 10
WinScaleSent: 10
DupAcksOut: 0
StartTimeUsec: 533222
Duration: 10324404
c2sData: -1
c2sAck: -1
s2cData: -1
s2cAck: -1
half_duplex: 0
link: 100
congestion: 1
bad_cable: 0
mismatch: 0
spd: 1664.70
bw: 9959.90
loss: 0.000001000
avgrtt: 6.85
waitsec: 0.00
timesec: 10.00
order: 0.0000
rwintime: 0.0039
sendtime: 0.9746
cwndtime: 0.0214
rwin: 96.0000
swin: 110.0181
cwin: 61.7141
rttsec: 0.006854
Sndbuf: 14420288
aspd: 0.00000
CWND-Limited: 2771.00
minCWNDpeak: -1
maxCWNDpeak: -1
CWNDpeaks: -1

Mucho better.

-- 
Byron Hicks
Lonestar Education and Research Network
office: 972-883-4645
google: 972-746-2549
aim/skype: byronhicks