[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
RE: NNEXRAD Latencies?
- Subject: RE: NNEXRAD Latencies?
- Date: Wed, 5 Dec 2001 11:13:11 -0700 (MST)
HI Jeff and David,
This network may provide greater bandwidth, I suppose it is worth a try,
especially until we hear back from LSU. Jeff, we may try feeding flood
from sirocco at LSU to help eliminate some of the potential problem
areas..i.e. network traffic. David, if you have the time, we may want to
investigate this other network, and feed machine from wunderground..as we
wait to hear back from Bob at LSU..
Thanks for your timely responses, it makes this work ALOT easier.
-Jeff
____________________________ _____________________
Jeff Weber address@hidden
Unidata Support PH:303-497-8676
NWS-COMET Case Study Library FX:303-497-8690
University Corp for Atmospheric Research 3300 Mitchell Ln
http://www.unidata.ucar.edu/staff/jweber Boulder,Co 80307-3000
________________________________________ ______________________
On Wed, 5 Dec 2001, Jeff Masters wrote:
>
> David, try feeding from whirlpool.wunderground.com and see if you get
> better results. That machine is on a different network, perhaps you will
> get better results, although traceroute shows similar results to the one
> from frost.wunderground.com:
>
> traceroute to flood.atmos.uiuc.edu (128.174.80.47), 30 hops max, 40 byte
> packets
> 1 66.28.69.129 (66.28.69.129) 1.01 ms 0.562 ms 0.495 ms
> 2 g0-2.core01.sjc01.atlas.cogentco.com (66.28.5.185) 0.564 ms 0.342 ms
> 0.328 ms
> 3 p4-0.core01.sfo01.atlas.cogentco.com (66.28.4.93) 1.598 ms 1.685 ms
> 1.557 ms
> 4 p15-0.core02.sfo01.atlas.cogentco.com (66.28.4.42) 1.609 ms 2.615 ms
> 1.651 ms
> 5 p15-0.core01.den01.atlas.cogentco.com (66.28.4.129) 25.718 ms 25.243
> ms 25.488 ms
> 6 p5-0.core01.mci01.atlas.cogentco.com (66.28.4.30) 37.233 ms 36.136
> ms 40.066 ms
> 7 p13-0.core01.ord01.atlas.cogentco.com (66.28.4.34) 47.515 ms 48.303
> ms 48.685 ms
> 8 atm-0-0-0.nap.lincon.net (206.220.243.106) 48.012 ms 48.928 ms
> 48.052 ms
> 9 206.166.8.90 (206.166.8.90) 69.972 ms 68.572 ms 59.224 ms
> 10 uiuc-atmdmz-net.gw.uiuc.edu (192.17.8.32) 54.154 ms 53.542 ms
> 54.219 ms
> 11 t-core1-1.gw.uiuc.edu (128.174.0.196) 53.584 ms 52.684 ms 62.415 ms
> 12 t-core1-1.gw.uiuc.edu (128.174.1.129) 53.611 ms 54.509 ms 56.44 ms
> 13 t-terra.gw.uiuc.edu (128.174.1.169) 54.753 ms 55.136 ms 55.432 ms
> 14 flood.atmos.uiuc.edu (128.174.80.47) 63.146 ms 56.074 ms 53.862 ms
>
> Jeff
> ------------------------------------------------------------------------------
> Dr. Jeff Masters (address@hidden) ( )
> Chief Meteorologist /\ Home of the ( )
> The Weather Underground, Inc. /\ / \ /\ /\ ( )
> 300 N Fifth Ave #240 / \/ \/ \ /\ / \ ------
> Ann Arbor, MI 48104 ______/ / \/ \_ \\\\\
> 734-994-8824 (voice) Weather Underground \`\`\
> 734-994-8919 (fax) http://www.wunderground.com
>
>
> On Wed, 5 Dec 2001, Jeff Weber wrote:
>
> > Hello Ldm'ers,
> >
> > It does appear that both frost and ingestor at wunderground are on time.
> >
> > The delay seems to be occurring at flood.atmos.uiuc.edu
> >
> > Doing a notifyme to flood indicates that it is being overwhelmed by the
> > NMC2 (CONDUIT) feed, causing delay for other products.
> >
> > Those of you feeding NNEXRAD from flood, or feeding other products and
> > experiencing latencies, please let me know and we will attempt other
> > sites if you desire.
> >
> > We are working on this issue and will keep the list aware of any changes.
> >
> > Thank you,
> >
> >
> > -Jeff
> > ____________________________ _____________________
> > Jeff Weber address@hidden
> > Unidata Support PH:303-497-8676
> > NWS-COMET Case Study Library FX:303-497-8690
> > University Corp for Atmospheric Research 3300 Mitchell Ln
> > http://www.unidata.ucar.edu/staff/jweber Boulder,Co 80307-3000
> > ________________________________________ ______________________
> >
> > On Wed, 5 Dec 2001, David Wojtowicz wrote:
> >
> > > Flood.atmos.uiuc.edu does indeed feed NNEXRAD from wunderground.com and we
> > > are receiving it delayed from them. Steve Chizwell mentioned this to me
> > > the
> > > other day and said he was checking into it.
> > >
> > > --david wojtowicz
> > >
> > > -----Original Message-----
> > > From: address@hidden
> > > [mailto:address@hidden]On Behalf Of Kevin R. Tyle
> > > Sent: Wednesday, December 05, 2001 10:53 AM
> > > To: Eric Nelson
> > > Cc: LDM Users List; address@hidden
> > > Subject: Re: NNEXRAD Latencies?
> > >
> > >
> > > Hi Eric,
> > >
> > > Like you, we feed from flood, and yes, we see the same latencies.
> > > Top-level feed site looks to be ingestor.wunderground.com. Last night
> > > our stats file indicated latencies near 1 hour for HDS feeds emanating
> > > from wunderground as well as NNEXRAD. The HDS latency was transient,
> > > but NNEXRAD is still slow as of this time.
> > >
> > > ______________________________________________________________________
> > > Kevin Tyle, Systems Administrator **********************
> > > Dept. of Earth & Atmospheric Sciences address@hidden
> > > University at Albany, ES-235 518-442-4571 (voice)
> > > 1400 Washington Avenue 518-442-5825 (fax)
> > > Albany, NY 12222 **********************
> > > ______________________________________________________________________
> > >
> > > On Wed, 5 Dec 2001, Eric Nelson wrote:
> > >
> > > >
> > > > We're feeding NNEXRAD and FNEXRAD from flood.atmos.uiuc.edu and seeing
> > > > latencies of roughly an hour. Is anyone else experience data lag for
> > > > these feeds?
> > > >
> > > > -Eric
> > > > _______________________________________________________________________
> > > > Eric Nelson College of Dupage Meteorology Dept.
> > > > NWP WXP Graphics/Forecaster http://weather.cod.edu/
> > > > Lab:(630) 942-2590 address@hidden
> > > >
> > > > "I love deadlines. I especially like the whooshing sound they make as
> > > > they go flying by." --Douglas Adams
> > > > _______________________________________________________________________
> > > >
> > > >
> > >
> > >
> > >
> >
> >
>
>
>