It appears to be an update of machine status. Our logging software
logged 57874 of them in just over 56 seconds.
That's certainly not right.
You're right. A tiny bit of other messages are mixed in. When I separated
out all except the messages sent from this one node to the central manager,
I found that this node had sent 56159 messages to the CM, over the course
of three minutes, 34 seconds. Still, that's clearly way too many. You
could argue that the logging may be faulty, but there remains the fact that
it brought our network, and the network of the grid node, to a halt, so
there was definitely significant traffic being exchanged.
We've never seen it before. I'm certainly not willing to rule out a Condor
bug, but I'd expect to see it somewhere else.
The ad you're seeing is the Master Ad - the update that it gets sent at is
controlled by the MASTER_UPDATE_INTERVAL. It should default to 300 seconds.
We have not changed this default value.
The best thing to check would be to see the machine that's sending all of
the ads in.
I'll see if we can get in tomorrow; the computer is not under our control.
It's also worth looking in the CollectorLog on the central manager, and seeing
how many ads it's receiving.
CollectorLog has no mention of receiving ads from that node at that time.
-David
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