[Coral-dev] crl_anf and crl_flow stall after 10 minutes

[Stephen Donnelly]

Sounds like it could be a problem with either the application or the card.

Is the card still seeing packets? Run dagconfig -Ci while coral is still running and see if the counters are incrementing. Is the card dropping packets (e.g. application is not consuming them)? Run dagconfig a few times and see if the stream drop counters are incrementing.

Try capturing with a different application for a while and confirm that the card continues working for more than 10 minutes, e.g. dagbits -d0 -c, or tcpdump -v -i dag0 -w /dev/null

I'm not that familiar with the specific tools, but the CAIDA folks may be able to help. It could be that the packet rate on the 10G link is too much?

Regards,
Stephen.

From: coral-dev-bounces at caida.org [mailto:coral-dev-bounces at caida.org] On Behalf Of James Grace
Sent: Thursday, 12 April 2012 1:06 a.m.
To: coral-dev at caida.org
Cc: Julio Ibarra
Subject: [Coral-dev] crl_anf and crl_flow stall after 10 minutes

Good Morning,

I've encountered a problem when using either crl_flow or crl_anf on a Dag8.1SX with DAG 4.2.1 on a 10GigE link.  After about 10 minutes of collecting, both applications just stall.  The operating system still sees them as active and they are still utilizing the processor, but they are not generating and sort of output.  I've tried debug=2 to see if any useful information was generated from the application, but I didn't get anything.  Has this been an issue for anyone else?


Cheers,
James Grace
Network Engineer
AMPATH / CIARA
Florida International University
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