[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[IDD #AAX-709279]: idd.unidata.ucar.edu LDM issues?

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.

  • Subject: [IDD #AAX-709279]: idd.unidata.ucar.edu LDM issues?
  • Date: Mon, 28 Apr 2014 09:07:17 -0600
Hi Daryl,

re:
> I am seeing latencies build again between metfs1.agron.iastate.edu and
> idd.unidata.ucar.edu.  I checked out perfsonar and am getting this:
> 
> http://perfsonar.ucar.edu:7123/
> 
> 537Mb/s outbound and 45.19Mb/s inbound
> 
> Are there any know router issues there?

I don't believe that there are any known router issues in UCAR.  I will
get together with Mike Schmidt (Unidata sysadmin) to see if he can
investigate further.

re:
> I checked with my folks here and
> they were not aware of anything local.

The fact that you were able to work around latency problems by switching
to feed from idd.ssec.wisc.edu coupled and that idd.ssec.wisc.edu gets
some of its feeds directly and solely from idd.unidata.ucar.edu (e.g.,
FNEXRAD and UNIWISC) strongly suggests that the (routing?) issue is
outside of UCAR and the Front Range Gigapop.  It would be most useful
if you would test to make sure that feed latencies (especially for
FNEXRAD and UNIWISC) return to low values when REQUESTing from
idd.ssec.wisc.edu.  If this is still the case, then it would seem that
the cause of the latenies would be somewhere between you and us.

Cheers,

Tom
--
****************************************************************************
Unidata User Support                                    UCAR Unidata Program
(303) 497-8642                                                 P.O. Box 3000
address@hidden                                   Boulder, CO 80307
----------------------------------------------------------------------------
Unidata HomePage                       http://www.unidata.ucar.edu
****************************************************************************


Ticket Details
===================
Ticket ID: AAX-709279
Department: Support IDD
Priority: Normal
Status: Closed