[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Fwd: Re: [conduit] Slow connection/big lag from conduit.ncep.noaa.gov
- Subject: Re: Fwd: Re: [conduit] Slow connection/big lag from conduit.ncep.noaa.gov
- Date: Fri, 03 Apr 2015 09:40:39 -0400
Sounds good. I'm glad its working again. Please let me know if it happens again
and I will review in real time.
---
Kyle Nevins
NCWCP_HELPDESK
On Thu, 02 Apr 2015 16:50:12 -0400, Pete Pokrandt <address@hidden> wrote:
> I was alerted to it on Sunday evening (March 29) and apparently it had
> been happening for a few days already.
>
> Oddly enough, I have switched back over to feeding from
> conduit.ncep.noaa.gov and my latencies are back down under 60 seconds or
> so. I thought you did something, restarted the ldm on
> conduit.ncep.noaa.gov or something, but it appears whatever was going on
> has been resolved.
>
> I'll let you know if it happens again.
>
> Pete
>
>
> On 04/02/2015 03:43 PM, address@hidden wrote:
> > Pete,
> >
> > Thanks for the information, I am still looking into this, have not yet
> > found the root cause of the latency increase. You said it started on Monday
> > or before that?
> >
> > ---
> > Kyle Nevins
> > NCWCP_HELPDESK
> >
> > On Wed, 01 Apr 2015 16:28:22 -0400, Pete Pokrandt <address@hidden> wrote:
> >> Kyle,
> >>
> >> I had changed to feed conduit from idd.unidata.ucar.edu for a while, as
> >> a result of the slow connection to conduit.ncep.noaa.gov. Just earlier
> >> this afternoon I changed back. I currently have this in my ldmd.conf on
> >> idd.aos.wisc.edu:
> >>
> >> REQUEST CONDUIT "[05]$" ncepldm4.woc.noaa.gov
> >> REQUEST CONDUIT "[16]$" ncepldm4.woc.noaa.gov
> >> REQUEST CONDUIT "[27]$" ncepldm4.woc.noaa.gov
> >> REQUEST CONDUIT "[38]$" ncepldm4.woc.noaa.gov
> >> REQUEST CONDUIT "[49]$" ncepldm4.woc.noaa.gov
> >> REQUEST CONDUIT "[05]$" conduit.ncep.noaa.gov
> >> REQUEST CONDUIT "[16]$" conduit.ncep.noaa.gov
> >> REQUEST CONDUIT "[27]$" conduit.ncep.noaa.gov
> >> REQUEST CONDUIT "[38]$" conduit.ncep.noaa.gov
> >> REQUEST CONDUIT "[49]$" conduit.ncep.noaa.gov
> >>
> >> Pete
> >>
> >>
> >>
> >> On 04/01/2015 03:24 PM, address@hidden wrote:
> >>> Hi Pete,
> >>>
> >>> So it looks like you are only going to one of our conduit servers and I'm
> >>> trying to determine if that is our load balancer or not. Can you confirm
> >>> that your LDM feed goes to conduit.ncep.noaa.gov (140.90.101.42)? Thanks.
> >>>
> >>> ---
> >>> Kyle Nevins
> >>> NCWCP_HELPDESK
> >>>
> >>> On Tue, 31 Mar 2015 12:05:18 -0400, Pete Pokrandt <address@hidden> wrote:
> >>>> Per the below response, I am submitting a ticket to the NCWCP Help
> >>>> desk. See my description of the slow connection between
> >>>> conduit.ncep.noaa.gov and idd.aos.wisc.edu below.
> >>>>
> >>>> Thanks,
> >>>> Pete
> >>>>
> >>>>
> >>>>
> >>>> -------- Forwarded Message --------
> >>>> Subject: Re: [conduit] Slow connection/big lag from
> >>>> conduit.ncep.noaa.gov
> >>>> Date: Tue, 31 Mar 2015 10:56:11 -0400
> >>>> From: Justin Cooke - NOAA Federal <address@hidden>
> >>>> To: Pete Pokrandt <address@hidden>, NCWCP helpdesk - NOAA Service
> >>>> Account <address@hidden>
> >>>> CC: address@hidden <address@hidden>
> >>>>
> >>>>
> >>>>
> >>>> Pete,
> >>>>
> >>>> Please submit a ticket to the NCWCP Helpdesk (address@hidden
> >>>> <mailto:address@hidden>), someone on our system administration
> >>>> team will look into why you're seeing degraded performance from
> >>>> conduit.ncep.noaa.gov <http://conduit.ncep.noaa.gov>
> >>>>
> >>>> Justin Cooke
> >>>> NCEP Central Operations
> >>>>
> >>>> On Tue, Mar 31, 2015 at 10:45 AM, Pete Pokrandt <address@hidden
> >>>> <mailto:address@hidden>> wrote:
> >>>>
> >>>> The past few days my connection for conduit data feeding from
> >>>> conduit.ncep.noaa.gov <http://conduit.ncep.noaa.gov> (to
> >>>> idd.aos.wisc.edu <http://idd.aos.wisc.edu>) has become slower,
> >>>> resulting in large lag times and lost data.
> >>>>
> >>>> The attached gif shows my lag over the past few days. There are no
> >>>> time stamps on the image, unfortunately, but the large peaks are
> >>>> from each 6 hrly GFS/ensemble suite. The right side of the graph is
> >>>> now (14:30 UTC Tuesday, March 31) and the left side is ~00 UTC
> >>>> March 29.
> >>>>
> >>>> During the open peaks on the left side of the graph, I was feeding
> >>>> from conduit.ncep.noaa.gov <http://conduit.ncep.noaa.gov> and
> >>>> ncepldm4.woc.noaa.gov <http://ncepldm4.woc.noaa.gov>.
> >>>>
> >>>> About half-way across the graph, where the peaks begin to be filled
> >>>> in and the green line starts, I added idd.unidata.ucar.edu
> >>>> <http://idd.unidata.ucar.edu> to the mix. Lags were still large.
> >>>>
> >>>> Prior to the 00 UTC run last night (the first of the two lower blue
> >>>> peaks on the right hand side) I removed conduit.ncep.noaa.gov
> >>>> <http://conduit.ncep.noaa.gov> form my requests, so I am only
> >>>> requesting from idd.unidata.ucar.edu <http://idd.unidata.ucar.edu>
> >>>> and ncepldm4.woc.noaa.gov <http://ncepldm4.woc.noaa.gov>.
> >>>>
> >>>> My perception from this sequence of events is that my connectivity
> >>>> to conduit.ncep.noaa.gov <http://conduit.ncep.noaa.gov> has
> >>>> degraded. This seems to have begun within the last week or so, I
> >>>> didn't have the large lags before.
> >>>>
> >>>> Any ideas?
> >>>>
> >>>> What are the root conduit servers that I should be feeding from? I
> >>>> currently have
> >>>>
> >>>> conduit.ncep.noaa.gov <http://conduit.ncep.noaa.gov>
> >>>> and
> >>>> ncepldm4.woc.noaa.gov <http://ncepldm4.woc.noaa.gov>
> >>>>
> >>>> Thanks,
> >>>> Pete
> >>>>
> >>>>
> >>>>
> >>>>
> >>>> --
> >>>> Pete Pokrandt - Systems Programmer
> >>>> UW-Madison Dept of Atmospheric and Oceanic Sciences
> >>>> 608-262-3086 <tel:608-262-3086> - address@hidden
> >>>> <mailto:address@hidden>
> >>>>
> >>>>
> >>>> _______________________________________________
> >>>> conduit mailing list
> >>>> address@hidden <mailto:address@hidden>
> >>>> For list information or to unsubscribe, visit:
> >>>> http://www.unidata.ucar.edu/mailing_lists/
> >>>>
> >>>>
> >>>>
> >>>> --
> >>>> Pete Pokrandt - Systems Programmer
> >>>> UW-Madison Dept of Atmospheric and Oceanic Sciences
> >>>> 608-262-3086 - address@hidden
> >>
> >> --
> >> Pete Pokrandt - Systems Programmer
> >> UW-Madison Dept of Atmospheric and Oceanic Sciences
> >> 608-262-3086 - address@hidden
>
>
> --
> Pete Pokrandt - Systems Programmer
> UW-Madison Dept of Atmospheric and Oceanic Sciences
> 608-262-3086 - address@hidden