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Re: [perfsonar-user] Using bwctl on a virtual machine.


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  • From: Dan Doyle <>
  • To: Taran Lynn <>
  • Cc:
  • Subject: Re: [perfsonar-user] Using bwctl on a virtual machine.
  • Date: Mon, 16 Jul 2018 08:49:23 -0400
  • Ironport-phdr: 9a23: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
Hi Taran,

You may want to consider upgrading from bwctl to pscheduler. bwctl is very close to its end of life and has been replaced since the first 4.0 release with the newer pscheduler. It also offers some additional diagnostics which may help here.

In addition to what Szymon mentioned about ports, have you verified that the path is clean for the MTU you are using? We have seen cases where the initial control messages are small enough to not trigger jumbo frames, but when it gets to actually sending the data it runs into MTU problems.

Dan Doyle
GlobalNOC Software Developer
1-812-856-3892

On Jul 14, 2018, at 1:17 AM, Taran Lynn <> wrote:

Hello,

I'm trying to use bwctl on a virtual machine. However, every time I try
something like "bwctl -c denv-pt1.es.net" bwctl hangs. I assume I need
to forward some port that bwctl receives responses on, but I'm not sure
what port this would be. If anyone has any suggestions I'd appreciate them.
Thanks!

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