ndt-users list created

["Adel Marzouq Riyad" <>]

Aaron:

I configured the system to allow core dumps, but still didn't get a code dump 
by ndt..

I checked the code of src/web100srv.c and found that SIGSEGV is handled hence 
a core dump is not created.

I modified the function cleanup() in src/web100srv.c as follows:
[adel@ndt
 src]# diff web100srv.c web100srv.c.patched
450a451,452
>               signal(SIGSEGV, SIG_DFL);
>               kill(getpid(),SIGSEGV);
[adel@ndt
 src]#

Replaced the original with the patched web100srv.c, compiled, installed, and 
ran and core dump is created now.

The core dump is 17MB though, I put it on 
anonymous@ftp://81.21.98.15/core.24884
 with empty password.
another core is core.26004 is generated if used abort() instead of the 2 
functions above.

Want to mention that SIGSEGV is received by a child process, not the main 
parent ndt process.
I am using ndt-3.6.5

Please let me know if I am missing anything..

Thanks again,
Adel M. Riyad



-----Original Message-----
From: Aaron Brown 
[mailto:]
Sent: Tue 1/22/2013 9:51 PM
To: Adel Marzouq Riyad
Cc: 

Subject: Re: NDT Question..
 
Hey Adel,

Looks like it's crashing (Signal 11 received by process 27493). Is there a 
way to get a core dump?

Cheers,
Aaron

On Jan 22, 2013, at 4:31 AM, Adel Marzouq Riyad 
<>
 wrote:

> 
> Hi Aaron, here it is:
> 
> [root@ndt
>  ndt]# /usr/local/ndt/sbin/fakewww -dddd -l /usr/local/ndt/access.log -e 
> /usr/local/ndt/error.log -4 -b/usr/local/ndt/ndt &  
> /usr/local/ndt/sbin/ndtd -dddd -a --snaplog --tcpdump &
> 
> [1] 27486
> [2] 27487
> [root@ndt
>  ndt]# ANL/Internet2 NDT ver 3.6.5
>        Variables file = /usr/local/ndt/ndt/web100_variables
>        log file = /usr/local/ndt/ndt/web100srv.log
>        Admin file = /usr/local/ndt/ndt/admin.html
>        Debug level set to 4
> Jan 22 11:20:13 fakewww server started (NDT version 3.6.5)
>        port = 7123
>        federated mode = off
>        access log = /usr/local/ndt/access.log
>        error log = /usr/local/ndt/error.log
>        basedir = /usr/local/ndt/ndt
>        debug level set to 4
> server ready on port 3001
> web100_init() read 69 variables from file
> Signal 17 received by process 27487
> successfully locked '/tmp/view.string' for updating
> sending '0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,,' to tmp file
> Generated iflist with device=eth0 and if_speed=7
> Generated iflist with device=usbmon1 and if_speed=121
> nothing in queue
> Timer not running, waiting for new connection
> Received connection from [10.0.0.70]
> Jan 22 11:20:21 [10.0.0.70] requested file '/tcpbw100.html' - sent to client
> Jan 22 11:20:21 [10.0.0.70] requested file '/favicon.ico' - access denied
> New connection received, waiting for accept() to complete
> New connection received from 0x978f80 [10.0.0.70] sockfd=5.
> Client connect received from :IP 10.0.0.70 to some server on socket 5
> initialize_tests returned old/new client = 1, test_suite = 1 8 2 4 32
> Child thinks pipe() returned fd0=6, fd1=7 for pid=0
> Line just before ChldRdy: label, did't get here via the goto statement!
> ___-------______  client process is ready for testing!
> Telling client 27493 testing will begin now
> Queue pointer=27493, testing=1, waiting=1, mclients=0, zombie_check=0
> Waiting for new connection, timer running
> Valid test sequence requested, run test for client=27493
> Child process 27493 started
> run_test() routine, asking for test_suite =  1 8 2 4 32
> Starting test suite:
>> Middlebox test
>> Simple firewall test
>> C2S throughput test
>> S2C throughput test
>> META test
> <-- 27493 - Middlebox test -->
>  -- port: 3003
> Looking for Web100 data on socketid 6
> Server: ndt;3003 Client: 10.0.0.70;49675 1456;10;10;
> Sending 1456 Byte packets over the network, and data=10;
> Signal 17 received by process 27493
> Timer expired while waiting for a new connection
> Queue pointer=27493, testing=1, waiting=1, mclients=0, zombie_check=0
> Waiting for new connection, timer running
> Timer expired while waiting for a new connection
> Queue pointer=27493, testing=1, waiting=1, mclients=0, zombie_check=0
> Waiting for new connection, timer running
> CWND limited throughput = 60082 kbps (60082.003999272856)
> <--------- 27493 ----------->
> <-- 27493 - Simple firewall test -->
>  -- port: 34744
>  -- SFW time: 1
>  -- oport: 49676
> <-------------------------->
> <-- 27493 - C2S throughput test -->
>  -- port: 3002
> listening for Inet connection on testOptions->c2ssockfd, fd=3
> Sending 'GO' signal, to tell client 27493 to head for the next test
> C2S test calling init_pkttrace() with pd=0x18657320
> Unknown address family=17 found
> IPv4 interface found address=10.0.0.15
> IPv4 address match, setting device to 'eth0'
> Opening network interface 'eth0' for packet-pair timing
> pcap_open_live() returned pointer 0x97edc0
> installing pkt filter for 'host 10.0.0.70 and port 49678'
> Initial pkt src data = 62b204
> end named_log_create 
> /usr/local/ndt/ndt/serverdata/2013/01/22/20130122T09:20:30.721051000Z_10.0.0.70:49678.c2s_ndttrace
> Opening 
> '/usr/local/ndt/ndt/serverdata/2013/01/22/20130122T09:20:30.721051000Z_10.0.0.70:49678.c2s_ndttrace'
>  log fine
> --tracefile after packet_trace 
> 20130122T09:20:30.721051000Z_10.0.0.70:49678.c2s_ndttrace
> end named_log_create 
> /usr/local/ndt/ndt/serverdata/2013/01/22/20130122T09:20:30.721051000Z_10.0.0.70:49678.c2s_snaplog
> Timer expired while waiting for a new connection
> Queue pointer=27493, testing=1, waiting=1, mclients=0, zombie_check=0
> Waiting for new connection, timer running
> Snaplog file: 
> /usr/local/ndt/ndt/serverdata/2013/01/22/20130122T09:20:30.721051000Z_10.0.0.70:49678.c2s_snaplog
> 
> New IPv4 packet trace started -- initializing counters
> Timer expired while waiting for a new connection
> Queue pointer=27493, testing=1, waiting=1, mclients=0, zombie_check=0
> Waiting for new connection, timer running
> Timer expired while waiting for a new connection
> Queue pointer=27493, testing=1, waiting=1, mclients=0, zombie_check=0
> Waiting for new connection, timer running
> Timer expired while waiting for a new connection
> Queue pointer=27493, testing=1, waiting=1, mclients=0, zombie_check=0
> Waiting for new connection, timer running
> Signal 11 received by process 27493
> Signal 17 received by process 27487
> Timer expired while waiting for a new connection
> Queue pointer=27493, testing=1, waiting=1, mclients=0, zombie_check=0
> Processing SIGCHLD signal for active web100srv process [0], sig17=1
> wait3() returned status=65024 for PID=27493
> wexitstatus = '254'
> Main test process 27493 terminated, remove from queue
> Attempting to clean up child 27493, head pid = 27493
> Removing Child from head, decremented waiting/mclients 0/0
> Timer not running, waiting for new connection
> Signal 14 received by process 27496
> 
> 
> 
> Adel M. Riyad
> Thanks and Best Regards,
> 
> 
> -----Original Message-----
> From: Aaron Brown 
> [mailto:]
> Sent: Fri 1/18/2013 10:27 PM
> To: Adel Marzouq Riyad
> Cc: 
> 
> Subject: Re: NDT Question..
> 
> Hi Adel,
> 
> Would it be possible to run the ndt server in debug mode? (add -dddd to the 
> command-line). Also, could you run it from the command-line and have it not 
> background (to see if any segfaulting is going on).
> 
> Cheers,
> Aaron
> 
> On Jan 16, 2013, at 5:34 AM, Adel Marzouq Riyad 
> <>
>  wrote:
> 
>> 
>> Hi Aaron, thanks for your response :-). Here is the info you requested:
>> 
>> Console output:
>> ----------------------------------------------------
>> CacheEntry[http://10.0.0.15:7123/Tcpbw100.jar]: 
>> updateAvailable=false,lastModified=Thu Jan 01 02:00:00 EET 1970,length=-1
>> Couldn't set system property. Check your security settings.
>> wait flag received = 0
>> Server version: 3.6.5
>> 40496288 bytes 58892.98382112343 kb/s 5.501 secs
>> Sending '58892.98382112343' back to server
>> calling in2Socket.getLocalAddress()
>> SFW: port=57092
>> SFW: testTime=1
>> Asking security manager for listen permissions...
>> SFW: oport=49503
>> ******Send buffer size =8192
>> SocketException while writing to serverjava.net.SocketException: Socket 
>> closed
>> 10007.0 millisec test completed,65536,17034
>> 34054.881582891976 kb/s outbound
>> Exception in thread "Thread-15" java.lang.NumberFormatException: For input 
>> string: "
>> 
>> web100srv.log:
>> Jan 16 12:08:54  10.0.0.70 port 49501
>> Snaplog file: 
>> /usr/local/ndt/ndt/serverdata/2013/01/16/20130116T10:08:54.847227000Z_10.0.0.70:49505.c2s_snaplog
>> [C2S throughput test]
>> 
>> 
>> Service are running like this: #pgrep -lf | grep -i ndt
>> /usr/local/ndt/sbin/ndtd -a --snaplog --tcpdump
>> /usr/local/ndt/sbin/fakewww -d -l /usr/local/ndt/access.log -e 
>> /usr/local/ndt/error.log -4 -b/usr/local/ndt/ndt
>> Both are running as root.
>> 
>> BEst Regards,
>> Adel M. Riyad
>> 
>> 
>> 
>> -----Original Message-----
>> From: Aaron Brown 
>> [mailto:]
>> Sent: Tue 1/15/2013 11:08 PM
>> To: Adel Marzouq Riyad
>> Cc: 
>> 
>> Subject: Re: NDT Question..
>> 
>> Hi Adel,
>> 
>> Would you be able to send the web100srv log file, and the java console 
>> output?
>> 
>> Cheers,
>> Aaron
>> 
>>> -----Original Message-----
>>> From: Adel Marzouq Riyad 
>>> [mailto:]
>>>  
>>> Sent: Wednesday, December 19, 2012 8:35 AM
>>> To: 
>>> 
>>> Subject: NDT Question..
>>> Good day Mr.Carlson,
>>> 
>>> I have installed NDT 3.6.5 on a CentOS 6 machine with kernel 2.6.35 patch 
>>> with Web100.
>>> 
>>> head -1 /proc/web100/header shows: 2.5.30 201008181640 net100
>>> 
>>> Either I test from a machine inside the same LAN or from outside, the C2S 
>>> test doesn't finish and the output on the applet doesn't change from the 
>>> attached picture.
>>> 
>>> iptables is off, no firewall is running on server.
>>> 
>>> I followed the installation steps in the document bundled with NDT code.
>>> 
>>> Do you have any hint what this problem could be??
>>> 
>>> Adel M. Riyad
>> 
> 
> 
>