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

RE: NNEXRAD Latencies?



Thanks for the correction, no need to duplicate and consume bandwidth..

-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 Thu, 6 Dec 2001, David Wojtowicz wrote:

> 
> Actually, all I need is NNEXRAD|FNEXRAD for flood.atmos.uiuc.edu as I get
> UNIDATA and DIFAX from motherlode on squall.atmos.uiuc.edu.
> 
> -----Original Message-----
> From: Jeff Weber [mailto:address@hidden]
> Sent: Thursday, December 06, 2001 10:25 AM
> To: David Wojtowicz; address@hidden; Steve Chiswell
> Cc: address@hidden
> Subject: RE: NNEXRAD Latencies?
> 
> 
> HI David and Jerry,
> 
> Indeed, the traceroute to sunshine appears much better, and since we STILL
> have not heard back from Bob at LSU, let's attempt sunshine.
> 
> 
> Jerry,
> 
> Can we place an allow UNIDATA|NNEXRAD|NMC3|DIFAX|FSL2
> 
> for flood.atmos.uiuc.edu
> 
> David, have I asked for all the feeds you desire?
> 
> Flood had been feeding from wunderground, but we are experiencing
> latencies on that route so I hope you can accomodate this request.
> 
> Please cc me on any future correspondence so I can maintain accurate
> records here.
> 
> 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:
> 
> >
> > The different connection to wunderground seemed to help a bit at times,
> but
> > is generally still way behind.   If there's a choice between using
> sunshine
> > or sirocco, I suggest from the traceroutes below that sunshine is a better
> > choice for us if possible.  SSEC is practically next door, network wise.
> >
> > flood 532: /usr/sbin/traceroute sunshine.ssec.wisc.edu
> > traceroute to sunshine.ssec.wisc.edu (128.104.108.55), 30 hops max, 38
> byte
> > packet
> > s
> >  1  uiuc-atmsci-net.gw.uiuc.edu (128.174.80.8)  0.555 ms  0.627 ms  0.596
> ms
> >  2  t-core1-1.gw.uiuc.edu (128.174.1.170)  2.098 ms  1.103 ms  1.094 ms
> >  3  t-node1-1.gw.uiuc.edu (128.174.1.130)  0.828 ms  0.294 ms  0.305 ms
> >  4  dmz.gw.uiuc.edu (128.174.0.193)  2.841 ms  2.158 ms  1.480 ms
> >  5  206.220.243.35 (206.220.243.35)  9.125 ms  8.935 ms  9.255 ms
> >  6  144.92.128.206 (144.92.128.206)  17.828 ms  18.712 ms  10.396 ms
> >  7  sunshine.ssec.wisc.edu (128.104.108.55)  12.775 ms *  10.879 ms
> >
> >
> > flood 533: /usr/sbin/traceroute sirocco.srcc.lsu.edu
> > traceroute to sirocco.srcc.lsu.edu (130.39.188.220), 30 hops max, 38 byte
> > packets
> >  1  uiuc-atmsci-net.gw.uiuc.edu (128.174.80.8)  0.782 ms  0.568 ms  0.614
> ms
> >  2  t-core1-1.gw.uiuc.edu (128.174.1.170)  1.857 ms  1.104 ms  1.052 ms
> >  3  t-node1-1.gw.uiuc.edu (128.174.1.130)  0.864 ms  1.003 ms  0.276 ms
> >  4  dmz.gw.uiuc.edu (128.174.0.193)  1.491 ms  1.943 ms  1.114 ms
> >  5  ncsa-uiuc.gw.uiuc.edu (192.17.8.33)  1.678 ms  1.527 ms  1.876 ms
> >  6  ipls-ncsa.abilene.iu.edu (141.142.11.246)  4.877 ms  4.954 ms  14.912
> ms
> >  7  kscy-ipls.abilene.ucaid.edu (198.32.8.5)  16.392 ms  13.827 ms  23.105
> > ms
> >  8  hstn-kscy.abilene.ucaid.edu (198.32.8.61)  30.153 ms  43.523 ms
> 30.697
> > ms
> >  9  labtr-abilene-hou.155-mb.lagpop.La.Net (162.75.0.5)  54.024 ms  35.850
> > ms  36.
> > 561 ms
> > 10  lsubr-labtr.155-mb.lagpop.La.Net (162.75.0.10)  37.874 ms  38.175 ms
> > 48.445 m
> > s
> > 11  dbyd-4006-l3-1.g1.lsu.edu (130.39.1.6)  40.419 ms  38.100 ms  37.086
> ms
> > 12  sirocco.srcc.lsu.edu (130.39.188.220)  38.176 ms  38.247 ms  37.068 ms
> >
> >
> > -----Original Message-----
> > From: Jeff Weber [mailto:address@hidden]
> > Sent: Wednesday, December 05, 2001 12:13 PM
> > To: Jeff Masters; David Wojtowicz
> > Cc: ldm-support
> > Subject: RE: NNEXRAD Latencies?
> >
> >
> > 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
> > > > > >
> > _______________________________________________________________________
> > > > > >
> > > > > >
> > > > >
> > > > >
> > > > >
> > > >
> > > >
> > >
> > >
> > >
> >
> >
> >
> 
> 
>