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[IDD #BXN-896443]: FW: NOAAPORT2


> One of are clients are complaining about late product generation the
> tends to occur daily around 0500 and 17Z.  It appears the final file
> destined to become these products seem oddly delayed.
> For instance, today for a product for a NEXRAD product for ABC for
> timestamp 202005250530, this product was not generated until a product
> comes in at 20200525054332.

I assume that you are referring to NEXRAD Level 2 data since the receipt
latencies shown by three CMC machines for NEXRAD Level 3 data are reasonably
low for the great majority of the day:




> This is an ongoing complaint from the client.  Is there a delay around
> 05Z and 17Z that can explain this?

We have been experiencing receipt delays (high latencies) for some of the
NEXRAD Level 2 products recently.  Latency plots for the two CMC machines
that are REQUESTing NEXRAD2 feeds reflect the latencies that we are seeing:

randomly chosen real-server back end to the idd.unidata.ucar.edu relay cluster:

node3.unidata.ucar.edu - one of the backend machines of the 
idd.unidata.ucar.edu cluster:



It is likely that the delays your user is referring are being caused by high
latencies for products from particular NEXRAD radars as is shown in all three
of these latency plots.  The latencies in question are upstream from us, so
we have no way of addressing the problem directly.


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Ticket Details
Ticket ID: BXN-896443
Department: Support IDD
Priority: Normal
Status: Closed
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