ndt-users list created

[Byron Hicks <>]

On 05/21/2013 08:42 AM, Aaron Brown wrote:
> Hey Byron,
>
> Could you
> install 
> http://desk146.internet2.edu/~aaron/ndt-server-3.6.5.2-rc3.el5.centos.i386.rpm
> <http://desk146.internet2.edu/%7Eaaron/ndt-server-3.6.5.2-rc3.el5.centos.i386.rpm>
>  and
> see if it fixes the issue?
>

Do you have the updated ndt client?  When I run web100clt, it complains
about a mismatch, and I'm getting the same result as before:

[root@ps1-akard-dlls
 ~]# web100clt -n ps1-hardy-hstn
Testing network path for configuration and performance problems  -- 
Using IPv4 address
Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done
checking for firewalls . . . . . . . . . . . . . . . . . . .  Done
running 10s outbound test (client to server) . . . . .  8075.65 Mb/s
running 10s inbound test (server to client) . . . . . . 1532.35 Mb/s
sending meta information to server . . . . . Done
Server unable to determine bottleneck link type.
Information: Other network traffic is congesting the link
Information [S2C]: Packet queuing detected: 81.77% (remote buffers)
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]
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]
[root@ps1-akard-dlls
 ~]# web100clt -ll -d -n ps1-hardy-hstn
Testing network path for configuration and performance problems  -- 
Using IPv4 address
* New Client, implements queuing feedback
Requesting test suite:
 > Middlebox test
 > Simple firewall test
 > C2S throughput test
 > S2C throughput test
 > META test
WARNING: NDT server has different version number (3.6.5.2-rc3)
 <-- Middlebox test -->
  -- port: 3003
Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done
 <-------------------->
 <-- Simple firewall test -->
checking for firewalls . . . . . . . . . . . . . . . . . . . 
  -- port: 40653
  -- time: 1
  -- oport: 47927
Done
 <-------------------------->
 <-- C2S throughput test -->
  -- port: 3002
running 10s outbound test (client to server) . . . . .  9113.50 Mb/s
 <------------------------->
 <-- S2C throughput test -->
  -- port: 3003
running 10s inbound test (server to client) . . . . . . 1382.59 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
Information [S2C]: Packet queuing detected: 83.25% (remote buffers)
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 = 8.20 msec;the Packet size = 8948
Bytes; and
No packet loss was observed.
This connection is sender limited 97.00% of the time.
This connection is network limited 2.68% 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 8321.84 Mbps
The NDT server has a 13734 KByte buffer which limits the throughput to
13080.56 Mbps
Your PC/Workstation has a 12282 KByte buffer which limits the throughput
to 11697.32 Mbps
The network based flow control limits the throughput to 9237.75 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: 14064000
AckPktsIn: 208125
AckPktsOut: 0
BytesRetrans: 0
CongAvoid: 0
CongestionOverCount: 0
CongestionSignals: 0
CountRTT: 208125
CurCwnd: 9932280
CurRTO: 209
CurRwinRcvd: 12515328
CurRwinSent: 18432
CurSsthresh: 2147483647
DSACKDups: 0
DataBytesIn: 0
DataBytesOut: 2147483647
DataPktsIn: 0
DataPktsOut: 1153793
DupAcksIn: 0
ECNEnabled: 0
FastRetran: 0
MaxCwnd: 9932280
MaxMSS: 8948
MaxRTO: 209
MaxRTT: 16
MaxRwinRcvd: 12576768
MaxRwinSent: 18432
MaxSsthresh: 0
MinMSS: 8928
MinRTO: 208
MinRTT: 8
MinRwinRcvd: 18432
MinRwinSent: 17896
NagleEnabled: 1
OtherReductions: 0
PktsIn: 208125
PktsOut: 1153793
PktsRetrans: 0
RcvWinScale: 10
SACKEnabled: 3
SACKsRcvd: 0
SendStall: 0
SlowStart: 0
SampleRTT: 9
SmoothedRTT: 9
SndWinScale: 10
SndLimTimeRwin: 32960
SndLimTimeCwnd: 276438
SndLimTimeSender: 10010634
SndLimTransRwin: 2
SndLimTransCwnd: 55
SndLimTransSender: 55
SndLimBytesRwin: 116740
SndLimBytesCwnd: 61728520
SndLimBytesSender: 2147483647
SubsequentTimeouts: 0
SumRTT: 1707343
Timeouts: 0
TimestampsEnabled: 1
WinScaleRcvd: 10
WinScaleSent: 10
DupAcksOut: 0
StartTimeUsec: 275854
Duration: 10324228
c2sData: -1
c2sAck: -1
s2cData: -1
s2cAck: -1
half_duplex: 0
link: 100
congestion: 1
bad_cable: 0
mismatch: 0
spd: 1664.71
bw: 8321.84
loss: 0.000001000
avgrtt: 8.20
waitsec: 0.00
timesec: 10.00
order: 0.0000
rwintime: 0.0032
sendtime: 0.9700
cwndtime: 0.0268
rwin: 95.9531
swin: 107.2998
cwin: 75.7773
rttsec: 0.008203
Sndbuf: 14064000
aspd: 0.00000
CWND-Limited: 2774.00
minCWNDpeak: -1
maxCWNDpeak: -1
CWNDpeaks: -1

[root@ps1-akard-dlls
 ~]# web100clt -v
ANL/Internet2 NDT version 3.6.5.1 (client)

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