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Currently, ns3 in the "mirror" system test sends trust anchor telemetry queries every second as it is started with "-T tat=1". Given the number of trust anchors configured on ns3 (9), TAT-related traffic clutters up log files, hindering troubleshooting efforts. Increase TAT query interval to 3 seconds in order to alleviate the issue. Note that the interval chosen cannot be much higher if intermittent test failures are to be avoided: TAT queries are only sent after the configured number of seconds passes since resolver startup. Quick experiments show that even on contemporary hardware, ns3 should be running for at least 5 seconds before it is first shut down, so a 3-second TAT query interval seems to be a reasonable, future-proof compromise. Ensure the relevant check is performed before ns3 is first shut down to emphasize this trade-off and make it more clear by what time TAT queries are expected to be sent.
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99 B
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1 line
99 B
Text
-D mirror-ns3 -X named.lock -m record,size,mctx -T clienttest -c named.conf -d 99 -g -U 4 -T tat=3
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