ndt-users list created

[Richard Carlson <>]

Hi Chris;

Thanks for the update.  I think I released a bad version of 3.5.6.   
I'll get a new release out in the next few hours.

Sorry for the disruption.

Rich

On Sep 1, 2009, at 7:39 AM, Chris Welti wrote:

> Hi Rich,
>
> I've just upgraded one of our NDT servers from 3.4.4 to 3.5.6.
> I'm observing the same behaviour as listed in this thread:
>
> ** Starting test 1 of 1 **
> Connected to: lsmp2  --  Using IPv4 address
> Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done
> checking for firewalls . . . . . . . . . . . . . . . . . . .  Done
> running 10s outbound test (client-to-server [C2S]) . . . . . 91.78Mb/s
> running 10s inbound test (server-to-client [S2C]) . . . . . .  
> 85.01Mb/s
> S2C throughput test: Received wrong type of the message
> ERROR MSG: Server (S2C throughput test): Invalid S2C throughput  
> received
> S2C throughput test FAILED!
> Server unable to determine bottleneck link type.
> Information: Other network traffic is congesting the link
>
> There are test results for both C2S and S2C tests, but an error is  
> reported anyway.
> On the server there are also error messages (Protocol error! S2C  
> throughput test FAILED!)
>
> Anyway, I've tried to install all the 3.5. versions before and it  
> seems to me that this bug was introduced with v3.5.3.
> Using v3.5.2 or v3.5.1 it works as a charm on the same system  
> (debian, lenny, 2.6.26-web100)
> v3.5.3, v3.5.4, v3.5.5 and v3.5.6 all produce the same error output  
> as above.
>
> Maybe that helps... Regards,
> Chris
>
> Galuschka Christoph wrote:
> > Hello Richard,
> >
> > I'm currently running the tests with 2.6.30.5 and IE6. JAVA - if
> > relevant - is 1.6.11.
> > The funny thing also is, I do get results in the webbrowser, the  
> > client
> > just doesn't finish correctly.
> >
> > I will repair the WAIT-comment thing on monday (sorry, I'm not the  
> > best
> > in C)
> >
> > Regards
> > Christoph
> >
> > -----------------------------------------
> > Ing. Christoph Galuschka
> >
> > TIWAG-Tiroler Wasserkraft AG
> > Bereich IT/Betrieb und Services
> > Eduard-Wallnöfer-Platz 2
> > 6010 Innsbruck
> > T: +43 (0)50607 21832
> > F: +43 (0)50607 41832
> > www.tiroler-wasserkraft.at
> > -----------------------------------------
> > Firmenbuchgericht Innsbruck, FN 44133b
> > Sitz der Gesellschaft: Innsbruck
> > DVR: 0164089
> >
> > ------------------------------------------------------------------------
> > *From:* Richard Carlson
> > *Sent:* Sat 8/29/2009 15:28
> > *To:* Galuschka Christoph
> > *Cc:* 
> >
> > *Subject:* Re: Error running web100 3.5.0
> >
> > Hi Chris;
> >
> > What browser are you using?  What kernel are you using on the server?
> > I'll try and duplicate this in my lab.
> >
> > The problem is that the server thinks that the server-to-client test
> > failed, even though it completed successfully.
> > More in-line
> >
> > On Aug 29, 2009, at 2:16 AM, Galuschka Christoph wrote:
> >
> > > Hello Richard,
> > >
> > > thanks for posting the new releases.
> > > I've installed 3.5.6 and I still get some errors resulting in an
> > > incomplete measurement. Here is the output from web100srv:
> > > > >
> > > ANL/Internet2 NDT ver 3.5.6
> > >        Variables file = /usr/local/ndt/web100_variables
> > >        log file = /usr/local/ndt/web100srv.log
> > >        Debug level set to 5
> > > [snip snip snip]
> > Everything was normal up to this point.
> > > fwd.saddr = dd70b0a:3003, rev.saddr = f006c0a:3461
> > > 01:02:56.724367   10.11.215.13:3003 --> 10.108.0.15:3461 Collected
> > > pkt-pair data max = 18667
> > > 01:02:56.724367   10.108.0.15:3461 --> 10.11.215.13:3003 Collected
> > > pkt-pair data max = 65475
> > > Read '  1 0 0 0 4 661 18667 6971 5501 5721 0 5377 976.37 0 0 0 1 0  
> > > 7'
> > > from monitor pipe
> > > Read '  0 0 0 1 367 9334 40681 26321 35413 65475 39990 34285 663.83
> > > 39864 40036 171967 0 39990 7' from monitor pipe
> > > 550764 kbps inbound
> > This is the measured sc2 speed.
> >
> > > libweb100: warning: accessing depricated variable AckPktsIn
> > > Variable 0 (AckPktsIn): web100_snap_read(): invalid arguments
> > > libweb100: warning: accessing depricated variable AckPktsOut
> > [snip snip snip]
> > The server walks through the list of variables twice, once for the  
> > 'read' group and once for the 'tuning' group.  You can ignore these  
> > errors - they are non-events.
> > > > > > send_msg: type=5, len=18
> > [snip snip snip]
> > The data was successfully sent back to the client.
> > > Signal 11 received by process 3746
> > > Signal 17 received by process 3741
> > The child process received the terminate signal and the child process
> > terminated.
> >
> > > Protocol error!
> > > > > > send_msg: type=7, len=61
> > > S2C throughput test FAILED!
> > This says the s2c test failed and the server sent that message to the
> > client, however as noted above, the test succeeded.
> >
> > > Finished testing C2S = 690.88 Mbps, S2C = -0.00 Mbps
> > > Client --> Server data detects link = OC-12
> > > Client <-- Server Ack's detect link = Gigabit Ethernet
> > > Server --> Client data detects link = OC-12
> > > Server <-- Client Ack's detect link = OC-12
> > > CWND limited test = 43453.26 while unlimited = -0.71
> > > Better throughput when CWND is limited, may be duplex mismatch
> > > > > > send_msg: type=8, len=42
> > > > > > send_msg: type=8, len=76
> > > > > > send_msg: type=8, len=89
> > > > > > send_msg: type=8, len=77
> > > > > > send_msg: type=8, len=82
> > > > > > send_msg: type=8, len=53
> > > > > > send_msg: type=9, len=0
> > > Opened
> > > '/usr/local/ndt/serverdata/ 
> > > 2009/08/29/20090829T07:02:36.826169000Z_10.108.0.15:3444.meta'
> > > metadata log file
> > > Successfully returned from run_test() routine
> > > Signal 17 received by process 3740
> > > now = 1251529386 Process started at 1251529356, run time = 30
> > > Select exited with rc = -1
> > > Queue pointer = 3741, testing = 1, waiting = 1, zombie_check = 0
> > > Received SIGCHLD signal for active web100srv process [3740]
> > > wait3() returned 0 for PID=3741
> > > wexitstatus = '0'
> > > Attempting to clean up child 3741, head pid = 3741
> > > Child process 3741 causing head pointer modification
> > > Removing Child from head, decrementing waiting now = 0
> > > Timer not running, waiting for new connection
> > And everything exits properly.
> >
> > > > >
> > > This is the result from the browser:
> > > > >
> > > Connecting to '10.11.215.13' [/10.11.215.13] to run test
> > > Connected to: 10.11.215.13  --  Using IPv4 address
> > > Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done
> > > checking for firewalls . . . . . . . . . . . . . . . . . . .  Done
> > > running 10s outbound test (client-to-server [C2S]) . . . . .  
> > > 690.87Mb/s
> > > running 10s inbound test (server-to-client [S2C]) . . . . . .  
> > > 550.79Mb/s
> > > S2C throughput test: Received wrong type of the message
> > > ERROR MSG: Server (S2C throughput test): Invalid S2C throughput  
> > > received
> > > S2C throughput test FAILED!
> > > The slowest link in the end-to-end path is a a 622 Mbps OC-12 subnet
> > > > >
> >
> > So the question is, why did the server mistakenly report an error?
> > > After running the test I re-read your email and checked
> > > src/testoptions.c line 730 about the comment wait(NULL). I see  
> > > the /*
> > > */ are still there so I removed them and recompiled everything. This
> > > did not help very much - here is output from web100srv with the /*  
> > > */
> > > removed:
> > > > >
> > [snip snip snip]
> >
> > Sorry for not being clear.  The 3.5.6 code used the waitpid() call
> > instead of the wait() call.  They are functionally equivalent, so  
> > when
> > you removed the comment, you now wait twice after the c2s test
> > completes.  This causes the server to timeout and no s2c test is run.
> > Just remove/comment out one of the 2 wait() or waitpid() lines and
> > rebuild/install to get back to 1 wait call.
> >
> > Regards;
> > Rich
> >
> > > I hope the debugging output helps...
> > >
> > > thanks and best regards
> > > Christoph Galuschka
> > >
> > > ------------------------------------------------------------------------
> > > *From:* Richard Carlson 
> > > [mailto:]
> > > *Sent:* Fri 8/28/2009 14:25
> > > *To:* Galuschka Christoph
> > > *Cc:* 
> > >
> > >  
> > > <mailto:>
> > > *Subject:* Re: Error running web100 3.5.0
> > >
> > > Hi Chris;
> > >
> > > Sorry about that.  There is a bug in the 3.5.0 release.  You can
> > > download the latest version (3.5.6 which will be posted soon) or you
> > > can easily patch the 3.5.0 release.  Just edit the src/testoptions.c
> > > file and go to line 730.  You should find the line /* wait(NULL); */
> > > - which ofcourse makes this a comment.  Remove the "/*" and "*/"
> > > char's (so its not a comment) and rebuild/reinstall the package.   
> > > This
> > > should clear out this fault.
> > >
> > > Rich
> > >
> > > On Aug 27, 2009, at 4:47 AM, 
> > >
> > > <mailto:>
> > >  wrote:
> > >
> > > > Hello,
> > > >
> > > > I've just finished installing ndt-3.5.0 on a fresh SuSE 11.1 System
> > > > (incl. alle prerequisits; patch for kernel 2.6.27,
> > > > web100_userland-1.7). Server runs fine and I do get bandwith  
> > > > results.
> > > >
> > > > However, the web100srv produces an error which fails to compelte  
> > > > the
> > > > test successfully. This is the output from -ddd:
> > > > ANL/Internet2 NDT ver 3.5.0
> > > >       Variables file = /usr/local/ndt/web100_variables
> > > >       log file = /usr/local/ndt/web100srv.log
> > > >       Debug level set to 1
> > > > server ready on port 3001
> > > > web100_init() read 69 variables from file
> > > > Starting test suite:
> > > > > Middlebox test
> > > > > Simple firewall test
> > > > > C2S throughput test
> > > > > S2C throughput test
> > > > <-- Middlebox test -->
> > > > -- port: 3003
> > > > Sending 1456 Byte packets over the network
> > > > Signal 17 received by process 22352
> > > > <-------------------->
> > > > <-- Simple firewall test -->
> > > > -- port: 42133
> > > > -- time: 1
> > > > -- oport: 2571
> > > > <-------------------------->
> > > > <-- C2S throughput test -->
> > > > -- port: 3002
> > > > listening for Inet connection on testOptions->c2ssockfd, fd=3
> > > > Sending 'GO' signal, to tell client to head for the next test
> > > > Opening network interface 'eth2' for packet-pair timing
> > > > installing pkt filter for 'host 10.110.109.104 and port 2574'
> > > > Initial pkt src data = 8068484
> > > > New packet trace started -- initializing counters
> > > > 365314 kbps outbound
> > > > Signal USR1(10) sent to child [22355]
> > > > Signal 10 received by process 22355
> > > > 03:16:15.649224   03:16:15.649224   128 bytes read '  0 0 84 694
> > > > 7815 18212 77975 16876 70005 144937 1 1558 232.14 0 0 0 1 0' from
> > > > monitor pipe
> > > > 128 bytes read '  1 0 0 99 558 1644 45429 40869 16975 3745 1 1
> > > > 274.82 86 14 109221 0 0' from monitor pipe
> > > > <------------------------->
> > > > <-- S2C throughput test -->
> > > > -- port: 3003
> > > > waiting for data on testOptions->s2csockfd
> > > > Signal 11 received by process 22355
> > > > Signal 17 received by process 22352
> > > > Opening network interface 'eth2' for packet-pair timing
> > > > installing pkt filter for 'host 10.110.109.104 and port 2580'
> > > > Initial pkt src data = 8068484
> > > > Signal 17 received by process 22352
> > > > New packet trace started -- initializing counters
> > > > sent 716955648 bytes to client in 10.00 seconds
> > > > Buffer control counters Total = 87519, new data = 0, Draining Queue
> > > > = 0
> > > > Signal USR2(12) sent to child [22357]
> > > > Signal 12 received by process 22357
> > > > 03:16:26.019890   03:16:26.019890   Read '  0 0 1 1 5 6 9612 1476
> > > > 1235 1247 0 4235 454.46 0 0 0 1 0' from monitor pipe
> > > > Read '  0 0 0 3 1179 9323 46700 9154 13887 148207 4687 19061 273.91
> > > > 10056 242043 102 0 4687' from monitor pipe
> > > > 573470 kbps inbound
> > > > libweb100: warning: accessing depricated variable AckPktsIn
> > > > libweb100: warning: accessing depricated variable AckPktsOut
> > > > Variable 13 (CwndRestores) not found in KIS
> > > > Variable 22 (MaxCaCwnd) not found in KIS
> > > > Variable 30 (MaxSaCwnd) not found in KIS
> > > > Variable 13 (CwndRestores) not found in KIS
> > > > Variable 22 (MaxCaCwnd) not found in KIS
> > > > Variable 30 (MaxSaCwnd) not found in KIS
> > > > Signal 11 received by process 22357
> > > > Signal 17 received by process 22352
> > > > Protocol error!
> > > > S2C throughput test FAILED!
> > > > Client --> Server data detects link = 10 Gigabit Enet
> > > > Client <-- Server Ack's detect link = OC-12
> > > > Server --> Client data detects link = OC-12
> > > > Server <-- Client Ack's detect link = 10 Gigabit Enet
> > > >
> > > > If I'm not mistaking, the 2 lines:
> > > > > >
> > > > libweb100: warning: accessing depricated variable AckPktsIn
> > > > libweb100: warning: accessing depricated variable AckPktsOut
> > > > > >
> > > > probably are the source of the problem.
> > > >
> > > > any ideas what i might have missed?
> > > >
> > > > thanks and best regards
> > > > Christoph
> > >
> > > Richard Carlson
> > >
> > >  
> > > <mailto:>
> > > 1000 Oakbrook Dr
> > > Ann Arbor, MI  48104
> > >
> > > P: 734-352-7043
> > > C: 630-251-4572
> >
> > Richard Carlson
> >
> >  
> > <mailto:>
> > 1000 Oakbrook Dr
> > Ann Arbor, MI  48104
> >
> > P: 734-352-7043
> > C: 630-251-4572

Richard Carlson

1000 Oakbrook Dr
Ann Arbor, MI  48104

P: 734-352-7043
C: 630-251-4572