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=============================================================================== Robb Kambic Unidata Program Center Software Engineer III Univ. Corp for Atmospheric Research address@hidden WWW: http://www.unidata.ucar.edu/ =============================================================================== ---------- Forwarded message ---------- Date: Thu, 31 Aug 2000 17:11:10 -0400 (EDT) From: Arthur A. Person <address@hidden> To: Robb Kambic <address@hidden> Subject: Re: 20000831: Diagnosing data slowness at Penn State (new thread) Rob, I just discovered that I've been pulling data from dusk.ssec.wisc.edu instead of motherlode... I had switched last week to try and improve delivery times while UCAR was having a networking problem and forgot to switch back. I don't know how much of an impact this will have, but FYI I've switched back to motherlode now and will monitor. Art. On Thu, 31 Aug 2000, Robb Kambic wrote: > On Thu, 31 Aug 2000, Unidata Support wrote: > > > > > ------- Forwarded Message > > > > > >From: "Arthur A. Person" <address@hidden> > > >Subject: Diagnosing data slowness > > >Organization: Penn State > > >Keywords: 200008311839.e7VId2N08503 IDD motherlode network > > > > Hi... > > > > Our ldm for DDPLUS, HRS, etc from motherlode is running an hour behind > > (i.e. at the limit) and I'm trying to determine why. Whereas these are > > slow, data from WSI and MCIDAS (for example) are on time. Does this mean > > the problem is a network bandwidth one to motherlode, or could it still be > > a volume data issue from motherlode going through the ldm queues? I see > > there are an aweful lot of pqexpire entries in ldmd.log and I know a bunch > > of NIDS data was added to the Noaaport feed in the last several days. > > What's the best way to diagnose this problem? > > > > Thanks. > > > > Art. > > Art, > > It seems that the problem is local to psu, it's taking more time to go > through the local psu network then to go across the country. Looking at > the motherlode logs, I see time elapsed to navier. > > Aug 31 08:17:53 motherlode.ucar.edu navier(feed)[16361]: h_clnt_call: > navier.meteo.psu.edu: 1: time elapsed > 55.239236 > Aug 31 08:18:47 motherlode.ucar.edu navier(feed)[16361]: h_clnt_call: > navier.meteo.psu.edu: BLKDATA: time e > lapsed 32.236476 > > In my opinion the problem is still with the psu internal network. > > Robb Jeff > > > motherlode.ucar.edu% traceroute navier.meteo.psu.edu > traceroute to navier.meteo.psu.edu (128.118.28.2), 30 hops max, 40 byte > packets > 1 mlr-n13 (128.117.13.251) 0.615 ms 0.361 ms 0.519 ms > 2 vbnsr-n2 (128.117.2.252) 0.544 ms 0.496 ms 0.524 ms > 3 internetr-n243-104 (128.117.243.106) 0.614 ms 0.571 ms 0.758 ms > 4 denv-abilene (128.117.243.126) 2.226 ms 1.995 ms 1.654 ms > 5 kscy-dnvr.abilene.ucaid.edu (198.32.8.14) 12.083 ms 12.612 ms > 12.669 ms > 6 ipls-kscy.abilene.ucaid.edu (198.32.8.6) 21.521 ms 21.410 ms 21.815 > ms > 7 clev-ipls.abilene.ucaid.edu (198.32.8.26) 27.962 ms 27.338 ms > 27.400 ms > 8 abilene-gp.psc.net (192.88.115.122) 31.625 ms 31.329 ms 32.020 ms > 9 penn-state-vbns.psc.net (198.32.224.66) 41.545 ms 39.589 ms 41.578 > ms > 10 Willard1-ATM9-0-0.1.gw.psu.edu (128.118.44.2) 41.675 ms 42.644 ms > 38.831 ms > 11 * * * > 12 dk8000-1-rtvlan.ems.psu.edu (128.118.64.5) 45.553 ms 43.808 ms > 69.343 ms > 13 navier.meteo.psu.edu (128.118.28.2) 43.537 ms * 40.712 ms > > > > > > > > > > > > Arthur A. Person > > Research Assistant, System Administrator > > Penn State Department of Meteorology > > email: address@hidden, phone: 814-863-1563 > > > > > > ------- End of Forwarded Message > > > > =============================================================================== > Robb Kambic Unidata Program Center > Software Engineer III Univ. Corp for Atmospheric Research > address@hidden WWW: http://www.unidata.ucar.edu/ > =============================================================================== > > > > Arthur A. Person Research Assistant, System Administrator Penn State Department of Meteorology email: address@hidden, phone: 814-863-1563