Re: [conduit] Large lags on CONDUIT feed - started a week or so ago

  • To: Pete Pokrandt <poker@xxxxxxxxxxxx>
  • Subject: Re: [conduit] Large lags on CONDUIT feed - started a week or so ago
  • From: Carissa Klemmer - NOAA Federal <carissa.l.klemmer@xxxxxxxx>
  • Date: Tue, 12 Mar 2019 08:51:44 -0400
Hi Everyone

Iâve added the Dataflow team email to the thread. I havenât heard that any
changes were made or that any issues were found. But the team can look
today and see if we have any signifiers of overall slowness with anything.

Dataflow, try taking a look at the new Citrix or VM troubleshooting tools
if there are any abnormal signatures that may explain this.

On Monday, March 11, 2019, Pete Pokrandt <poker@xxxxxxxxxxxx> wrote:

> Art,
>
> I don't know if NCEP ever figured anything out, but I've been able to keep
> my latencies reasonable (300-600s max, mostly during the 12 UTC model
> suite) by splitting my CONDUIT request 10 ways, instead of the 5 that I had
> been doing, or in a single request. Maybe give that a try and see if it
> helps at all.
>
> Pete
>
>
>
> <http://www.weather.com/tv/shows/wx-geeks/video/the-incredible-shrinking-cold-pool>
> --
> Pete Pokrandt - Systems Programmer
> UW-Madison Dept of Atmospheric and Oceanic Sciences
> 608-262-3086  - poker@xxxxxxxxxxxx
>
> ------------------------------
> *From:* Person, Arthur A. <aap1@xxxxxxx>
> *Sent:* Monday, March 11, 2019 3:45 PM
> *To:* Holly Uhlenhake - NOAA Federal; Pete Pokrandt
> *Cc:* conduit@xxxxxxxxxxxxxxxx; support-conduit@xxxxxxxxxxxxxxxx
> *Subject:* Re: [conduit] Large lags on CONDUIT feed - started a week or
> so ago
>
>
> Holly,
>
>
> Was there any resolution to this on the NCEP end?  I'm still seeing
> terrible delays (1000-4000 seconds) receiving data from
> conduit.ncep.noaa.gov.  It would be helpful to know if things are
> resolved at NCEP's end so I know whether to look further down the line.
>
>
> Thanks...           Art
>
>
> Arthur A. Person
> Assistant Research Professor, System Administrator
> Penn State Department of Meteorology and Atmospheric Science
> email:  aap1@xxxxxxx, phone:  814-863-1563 <callto:814-863-1563>
>
>
> ------------------------------
> *From:* conduit-bounces@xxxxxxxxxxxxxxxx <conduit-bounces@xxxxxxxxxxxxxxxx>
> on behalf of Holly Uhlenhake - NOAA Federal <holly.uhlenhake@xxxxxxxx>
> *Sent:* Thursday, February 21, 2019 12:05 PM
> *To:* Pete Pokrandt
> *Cc:* conduit@xxxxxxxxxxxxxxxx; support-conduit@xxxxxxxxxxxxxxxx
> *Subject:* Re: [conduit] Large lags on CONDUIT feed - started a week or
> so ago
>
> Hi Pete,
>
> We'll take a look and see if we can figure out what might be going on.  We
> haven't done anything to try and address this yet, but based on your
> analysis I'm suspicious that it might be tied to a resource constraint on
> the VM or the blade it resides on.
>
> Thanks,
> Holly Uhlenhake
> Acting Dataflow Team Lead
>
> On Thu, Feb 21, 2019 at 11:32 AM Pete Pokrandt <poker@xxxxxxxxxxxx> wrote:
>
> Just FYI, data is flowing, but the large lags continue.
>
> http://rtstats.unidata.ucar.edu/cgi-bin/rtstats/iddstats_
> nc?CONDUIT+idd.aos.wisc.edu
> <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Frtstats.unidata.ucar.edu%2Fcgi-bin%2Frtstats%2Fiddstats_nc%3FCONDUIT%2Bidd.aos.wisc.edu&data=02%7C01%7Caap1%40psu.edu%7Cf75a98e5c01047c786b108d6981ed7a7%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C636863655570122684&sdata=5ReQN0dB3%2FfIL9ocMVQGSgs7Rv9lZHfvxr6IzsKfC2c%3D&reserved=0>
> http://rtstats.unidata.ucar.edu/cgi-bin/rtstats/iddstats_
> nc?CONDUIT+conduit.unidata.ucar.edu
> <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Frtstats.unidata.ucar.edu%2Fcgi-bin%2Frtstats%2Fiddstats_nc%3FCONDUIT%2Bconduit.unidata.ucar.edu&data=02%7C01%7Caap1%40psu.edu%7Cf75a98e5c01047c786b108d6981ed7a7%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C636863655570132693&sdata=ME2oBisBGioEn1wPndx8uI66iqiUgH2gO9nMub3iWBY%3D&reserved=0>
>
> Pete
>
>
>
> <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.weather.com%2Ftv%2Fshows%2Fwx-geeks%2Fvideo%2Fthe-incredible-shrinking-cold-pool&data=02%7C01%7Caap1%40psu.edu%7Cf75a98e5c01047c786b108d6981ed7a7%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C636863655570132693&sdata=8WV5O%2F4jNB0cllWeEI6Ze06X1X4bv4IygCnadTcxyxQ%3D&reserved=0>
> --
> Pete Pokrandt - Systems Programmer
> UW-Madison Dept of Atmospheric and Oceanic Sciences
> 608-262-3086  - poker@xxxxxxxxxxxx
>
> ------------------------------
> *From:* conduit-bounces@xxxxxxxxxxxxxxxx <conduit-bounces@xxxxxxxxxxxxxxxx>
> on behalf of Pete Pokrandt <poker@xxxxxxxxxxxx>
> *Sent:* Wednesday, February 20, 2019 12:07 PM
> *To:* Carissa Klemmer - NOAA Federal
> *Cc:* conduit@xxxxxxxxxxxxxxxx; support-conduit@xxxxxxxxxxxxxxxx
> *Subject:* Re: [conduit] Large lags on CONDUIT feed - started a week or
> so ago
>
> Data is flowing again - picked up somewhere in the GEFS. Maybe CONDUIT
> server was restarted, or ldm on it? Lags are large (3000s+) but dropping
> slowly
>
> Pete
>
>
>
> <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.weather.com%2Ftv%2Fshows%2Fwx-geeks%2Fvideo%2Fthe-incredible-shrinking-cold-pool&data=02%7C01%7Caap1%40psu.edu%7Cf75a98e5c01047c786b108d6981ed7a7%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C636863655570142698&sdata=y3refCa5zQubcuoGwMIaqPHUmKZrip0WirYwUsLQHj8%3D&reserved=0>
> --
> Pete Pokrandt - Systems Programmer
> UW-Madison Dept of Atmospheric and Oceanic Sciences
> 608-262-3086  - poker@xxxxxxxxxxxx
>
> ------------------------------
> *From:* conduit-bounces@xxxxxxxxxxxxxxxx <conduit-bounces@xxxxxxxxxxxxxxxx>
> on behalf of Pete Pokrandt <poker@xxxxxxxxxxxx>
> *Sent:* Wednesday, February 20, 2019 11:56 AM
> *To:* Carissa Klemmer - NOAA Federal
> *Cc:* conduit@xxxxxxxxxxxxxxxx; support-conduit@xxxxxxxxxxxxxxxx
> *Subject:* Re: [conduit] Large lags on CONDUIT feed - started a week or
> so ago
>
> Just a quick follow-up - we started falling far enough behind (3600+ sec)
> that we are losing data. We got short files starting at 174h into the GFS
> run, and only got (incomplete) data through 207h.
>
> We have now not received any data on CONDUIT since 11:27 AM CST (1727 UTC)
> today (Wed Feb 20)
>
> Pete
>
>
>
> <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.weather.com%2Ftv%2Fshows%2Fwx-geeks%2Fvideo%2Fthe-incredible-shrinking-cold-pool&data=02%7C01%7Caap1%40psu.edu%7Cf75a98e5c01047c786b108d6981ed7a7%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C636863655570142698&sdata=y3refCa5zQubcuoGwMIaqPHUmKZrip0WirYwUsLQHj8%3D&reserved=0>
> --
> Pete Pokrandt - Systems Programmer
> UW-Madison Dept of Atmospheric and Oceanic Sciences
> 608-262-3086  - poker@xxxxxxxxxxxx
>
> ------------------------------
> *From:* conduit-bounces@xxxxxxxxxxxxxxxx <conduit-bounces@xxxxxxxxxxxxxxxx>
> on behalf of Pete Pokrandt <poker@xxxxxxxxxxxx>
> *Sent:* Wednesday, February 20, 2019 11:28 AM
> *To:* Carissa Klemmer - NOAA Federal
> *Cc:* conduit@xxxxxxxxxxxxxxxx; support-conduit@xxxxxxxxxxxxxxxx
> *Subject:* [conduit] Large lags on CONDUIT feed - started a week or so ago
>
> Carissa,
>
> We have been feeding CONDUIT using a 5 way split feed direct from
> conduit.ncep.noaa.gov
> <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fconduit.ncep.noaa.gov&data=02%7C01%7Caap1%40psu.edu%7Cf75a98e5c01047c786b108d6981ed7a7%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C636863655570152707&sdata=%2FZG7wjkS9jh7h8pc0lrNWcU6W9w%2FzFwGfdd3HT0%2B0XQ%3D&reserved=0>,
> and it had been really good for some time, lags 30-60 seconds or less.
>
> However, the past week or so, we've been seeing some very large lags
> during each 6 hour model suite - Unidata is also seeing these - they are
> also feeding direct from conduit.ncep.noaa.gov
> <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fconduit.ncep.noaa.gov&data=02%7C01%7Caap1%40psu.edu%7Cf75a98e5c01047c786b108d6981ed7a7%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C636863655570152707&sdata=%2FZG7wjkS9jh7h8pc0lrNWcU6W9w%2FzFwGfdd3HT0%2B0XQ%3D&reserved=0>
> .
>
> http://rtstats.unidata.ucar.edu/cgi-bin/rtstats/iddstats_
> nc?CONDUIT+idd.aos.wisc.edu
> <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Frtstats.unidata.ucar.edu%2Fcgi-bin%2Frtstats%2Fiddstats_nc%3FCONDUIT%2Bidd.aos.wisc.edu&data=02%7C01%7Caap1%40psu.edu%7Cf75a98e5c01047c786b108d6981ed7a7%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C636863655570162721&sdata=NLBOKjWG9EfHVBj7A0R6jJA601dOUTS3RIo0lA5RS1c%3D&reserved=0>
>
> http://rtstats.unidata.ucar.edu/cgi-bin/rtstats/iddstats_
> nc?CONDUIT+conduit.unidata.ucar.edu
> <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Frtstats.unidata.ucar.edu%2Fcgi-bin%2Frtstats%2Fiddstats_nc%3FCONDUIT%2Bconduit.unidata.ucar.edu&data=02%7C01%7Caap1%40psu.edu%7Cf75a98e5c01047c786b108d6981ed7a7%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C636863655570172722&sdata=s%2FnkQz9y1BuE7ZlQMvfeBhBdqgHxcGlTYXDGCnjCXkY%3D&reserved=0>
>
>
> Any idea what's going on, or how we can find out?
>
> Thanks!
> Pete
>
>
>
> <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.weather.com%2Ftv%2Fshows%2Fwx-geeks%2Fvideo%2Fthe-incredible-shrinking-cold-pool&data=02%7C01%7Caap1%40psu.edu%7Cf75a98e5c01047c786b108d6981ed7a7%7C7cf48d453ddb4389a9c1c115526eb52e%7C0%7C0%7C636863655570172722&sdata=w122EutnxtWO8t0UiJoLlS6eCpgsTIU6HKp5FXiH45A%3D&reserved=0>
> --
> Pete Pokrandt - Systems Programmer
> UW-Madison Dept of Atmospheric and Oceanic Sciences
> 608-262-3086  - poker@xxxxxxxxxxxx
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-- 
Carissa Klemmer
NCEP Central Operations
IDSB Branch Chief
301-683-3835