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NDT Behaving Unpredictably


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  • Subject: NDT Behaving Unpredictably
  • Date: Thu, 20 Mar 2008 11:17:30 -0400 (EDT)
Greetings NDT Users,

I have installed NDT on OpenSuSE 10.3 64 bit. I am having some reliability
issues. More than 50% of the time, I am getting messages in the applet
saying that the server is busy. I have attempted to open ports 3001-3003 and
7123 in the firewall, with no success. I have also shut off the firewall
completely, with no change. I am very puzzled as to why this may be
happening...Any ideas?

Thank you in advance for any insight.
Heather Pegg

Please see all relevent information below:

Command to start NDT: /usr/local/sbin/web100srv -4 -l /var/log/web100ndt.log

---------------------- Applet Output ----------------------
TCP/Web100 Network Diagnostic Tool v5.5.4
click START to begin

** Starting test 1 of 1 **
Connected to: 155.138.8.29 -- Using IPv4 address
Checking for Middleboxes . . . . . . . . . . . . . . . . . . Server busy:
Please wait 30 seconds for previous test to finish

click START to re-test

** Starting test 1 of 1 **
Connected to: 155.138.8.29 -- Using IPv4 address
Checking for Middleboxes . . . . . . . . . . . . . . . . . . Server busy:
Please wait 30 seconds for previous test to finish

click START to re-test

** Starting test 1 of 1 **
Connected to: 155.138.8.29 -- Using IPv4 address
Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done
checking for firewalls . . . . . . . . . . . . . . . . . . . Done
running 10s outbound test (client-to-server [C2S]) . . . . . 27.02Mb/s
running 10s inbound test (server-to-client [S2C]) . . . . . . 94.61Mb/s
The slowest link in the end-to-end path is a 100 Mbps Full duplex Fast
Ethernet subnet
[C2S]: Packet queuing detected


------------------ Contents of Log ---------------------
lan8-29:/var/log # tail /var/log/web100ndt.log
Received SIGALRM signal: terminating active web100srv process [5971]
[Middlebox test]
Mar 21 07:02:32 155.138.8.6 port 2850
spds[0] = ' 0 0 1 2761 1982 7622 6873 6406 1153 0 0 0 248.40 0 0 0 1 0'
max=7622 [28.44%]
spds[1] = ' 1 0 1 2755 24 9474 855 301 0 0 2 1 55.12 20 1 13392 0 1'
max=9474 [70.64%]
spds[2] = ' 0 10 170 1709 2185 1140 933 420 2483 90 0 10 626.75 0 0 0 1 0'
max=2483 [27.17%]
spds[3] = ' 0 0 2 136 2436 2310 2636 361 44 0 3 0 118.10 81 91 7756 0 3'
max=2636 [33.26%]
Mar 21
07:02:32,155.138.8.6,4889,94949,27128,0,142492,7925,0,0,27739,0,1460,3,7928,65535,245760,108040,9951329,72888,154516,3780377
0,2,2,1,0,220,65535,100,0,0,0,0,5,5,8,6,0,27739,0,-1,22,0,0,92,0,30752560,0,0,72,0,0,-1,-1,-1
Mar 21 07:26:02 155.138.8.11 port 53299
Mar 21 07:39:22 155.138.8.6 port 3121
Received SIGALRM signal: terminating active web100srv process [6065]
[Middlebox test]


------------ Netstat During Successful Run ----------------
lan8-29:/var/log # netstat -nat
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:3001 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:6010 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:6011 0.0.0.0:* LISTEN
tcp 0 0 155.138.8.29:3003 155.138.8.6:3122 TIME_WAIT
tcp 0 0 :::22 :::* LISTEN
tcp 0 0 ::1:631 :::* LISTEN
tcp 0 0 ::1:25 :::* LISTEN
tcp 0 0 ::1:6010 :::* LISTEN
tcp 0 0 ::1:6011 :::* LISTEN
tcp 0 0 155.138.8.29:22 155.138.8.11:39735
ESTABLISHED
tcp 0 128 155.138.8.29:22 155.138.8.11:48543
ESTABLISHED

------------- Netstat During UNsucessful Run ---------------
lan8-29:/var/log # netstat -nat
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:3001 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:6010 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:6011 0.0.0.0:* LISTEN
tcp 0 0 :::22 :::* LISTEN
tcp 0 0 ::1:631 :::* LISTEN
tcp 0 0 ::1:25 :::* LISTEN
tcp 0 0 ::1:6010 :::* LISTEN
tcp 0 0 ::1:6011 :::* LISTEN
tcp 0 0 155.138.8.29:22 155.138.8.11:39735
ESTABLISHED
tcp 0 0 155.138.8.29:22 155.138.8.11:48543
ESTABLISHED

------------ Kernel Info ------------
lan8-29:/var/log # uname -a
Linux lan8-29 2.6.24.1-web100-88-v4 #1 SMP Wed Mar 19 05:54:02 EDT 2008
x86_64 x86_64 x86_64 GNU/Linux
lan8-29:/var/log # dmesg | grep -i web100
Linux version 2.6.24.1-web100-88-v4
(geeko@buildhost)
(gcc version 4.2.1 (SUSE Linux)) #1 SMP Wed Mar 19 05:54:02 EDT 2008
Web100 2.5.19 200802211940 net100: Initialization successful
lan8-29:/var/log # ls /proc/web100/
0 86 header




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