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Re: Connection was reset -- FC5 on x86-64


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  • From: David Hickman <>
  • To: Richard Carlson <>
  • Cc: Ray Gilstrap <>,
  • Subject: Re: Connection was reset -- FC5 on x86-64
  • Date: Thu, 18 May 2006 16:13:01 -0400

I just applied the patch and rebuilt NDT, everything is working now.

Mike - Thanks for your help/patches.

-David


On May 18, 2006, at 3:55 PM, Richard Carlson wrote:

OK, maybe this is the Bug that Mike Iglesias <> fixed quite a while ago. Somehow I missed getting this installed in the current release, but it is in my new unreleased version (hopefully to be released shortly).

In any case I just forwarded Mike's patches out to this list. From Mikes description I have a bug in the time() and ctime() function calls that effect 64-bit OS's.

Give this patch a try and let the list know what happens.

Rich

At 03:47 PM 5/18/2006, Ray Gilstrap wrote:
Hi,

I meant to ask for hep on my x86-64 problems a couple of weeks ago, but got sidetracked with other fires. So I'll just add essentially a "me too" here. My situation:

I am trying to set up NDT on an x86-64 (Dell Poweredge 2850) box running the 2.6.16.7 kernel. The Web100 tools and tcpdump/libpcap are working fine. Firewall is not blocking any traffic. The NDT tools compiled with no problems. However, I have problems in trying to actually run them.

I can start fakewww and connect to port 7123 with a browser or telnet.
But when the HTTP GET command is issued, the child process forks off, sends back a "HTTP/1.0 200 OK" response, and then segfaults. After a while, I tabled this problem and just used Apache. So now the page and the applet load into the browser as expected.

Unfortunately, web100srv does essentially the same thing as fakewww -- forks off a child which immediately segfaults, resulting in the seemingly endless loop of "Signal 11 received from process <child PID>" messages when debug messages are turned on.

Please let me know if you need any additional information to help diagnose the problem. Thanks a lot!

ray


Hickman, David R wrote:
Here is what I get when running the web100srv in debug.

Signal 11 received from process 9072 <-this line repeats many times
Signal 17 received from process 9054
Received SIGCHLD signal for active web100srv process [9054]



-----Original Message-----
From: Richard Carlson
[mailto:]
Sent: Wed 5/17/2006 6:01 PM
To: Hickman, David R;

Subject: Re: Connection was reset -- FC5 on x86-64

Hi David;

Does the command line tool connect? "/usr/local/bin/web100clt localhost" should work.

Is the NDT server process (web100srv) running as root? Try running the server with some debug levels "/usr/local/sbin/ web100srv -dd" and send me the output.

I don't know of any problems with running NDT on a 64-bit CPU, I've got one on-order so I'll know next week.

Rich
At 04:13 PM 5/17/2006,

wrote:

I have just setup NDT on a 64-bit box running Fedora Core 5. When I try to connect to the box from itself using Firefox I get "Connection was Reset by Server". I can't get a connection from any other machine either.

Other info:

-running latest web100 patch for 2.6.16 kernel

-trying to connect to 127.0.0.1:7123

-verified that fakewww and web100srv are running, nothing bad in the logs

-firewall is completely down

-motherboard/nic is an nVida chipset

Any known problems with NDT in a 64-bit environment?


Any help would be great.
-David


------------------------------------



Richard A. Carlson e-mail:
Network Engineer phone: (734) 352-7043
Internet2 fax: (734) 913-4255
1000 Oakbrook Dr; Suite 300
Ann Arbor, MI 48104



------------------------------------



Richard A. Carlson e-mail:
Network Engineer phone: (734) 352-7043
Internet2 fax: (734) 913-4255
1000 Oakbrook Dr; Suite 300
Ann Arbor, MI 48104





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