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web100 chokes network activity under 2.6.15


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  • From: Maurice Volaski <>
  • To: Richard Carlson <>
  • Cc: ,
  • Subject: web100 chokes network activity under 2.6.15
  • Date: Thu, 16 Mar 2006 16:13:49 -0500

Getting back to you on this... I realized after I switched JDKs that I was running the Gentoo kernel and not the vanilla 2.6.15 with the web100 patches.

When I did loaded the patched kernel (2.615.6 and web100 2.5.8), I immediately began having problems. Processes using the network are not behaving properly. We use drbd, which is network RAID, and it stalls. When I tried to sync portage tree in Gentoo, which uses rsync, it also stalls. Interestingly, ssh is not affected.

This occurs even if I unload the iptable modules, which aren't being used, anyway.

So it appears that the web100 selectively chokes network activity and is presently unusable!


Hi Marurice;

At 10:59 AM 3/8/2006, Maurice Volaski wrote:
Hi Maurice;

OK, I looked at the attached files and I think there is a bug in my build system somewhere. For some reason gnu is creating an Admin/Admin directory and putting a copy of the Admin.class file there. It also creates a copy in the parent directory and that is installed in the /usr/local/ndt directory during the make install process. This same bug may be causing gnu to complain about the ./Tcpbw100 file (or maybe it thinks it's a directory).

In any case everything seems to be in order and the make install process completed despite the errors. And just to be sure you did create the customized tcpbw100.html file by running the "conf/create-html.sh" command from the ndt-3.1.4b directory, right?

Assuming that is done, then I think the question is, why doesn't the applet load? One possible answer is a version difference between the SDK (1.5.0_6 in your case) and the plugin JRE version. I'm hearing and seeing cases where the 1.4.2 plugin wouldn't run the 1.5.0 applet. There are 2 solutions
1) recompile the applet with a 1.4.2 SDK
2) update the browser plugin to a 1.5.0 JRE

I can try recompiling it, but shouldn't there actually be a file called Tcpbw100 somewhere?

No, there is no file called Tcpbw100. If the fakewww log file shows the .jar file was sent, then I'd really suspect the SDK/JRE version mismatch. My laptop is running a 1.5.0 JRE so if you send me a URL I can test this out for you.


--

Maurice Volaski,

Computing Support, Rose F. Kennedy Center
Albert Einstein College of Medicine of Yeshiva University



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