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

20030120: ldm-6.0.0.8 loaded on thelma; CONDUIT thrashing

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.

  • Subject: 20030120: ldm-6.0.0.8 loaded on thelma; CONDUIT thrashing
  • Date: Thu, 30 Jan 2003 08:39:09 -0700
Guys,

I built and installed ldm-6.0.0.8 on thelma last night.  Chiz and I
switched the CONDUIT feed to point at motherlode and added the fence
settings for IDS|DDPLUS and NNEXRAD.  The result of all of this is that
CONDUIT delivery is even worse than it was before the change.  I logged
onto motherlode to snoop around and saw that the load average was over
17. Given this, I logged onto zero and shut down its ingest of numerous
feeds from motherlode (CONDUIT, and more) and jackie/desi.

It appears to me that feeding CONDUIT to more than two sites
(motherlode was feeding zero and atm when thelma was added into the
mix) sent motherlode into a bad state.  Hopefully, dropping back its
feeds to just two will allow it to calm down.

It seems to me that we are not making any progress.  For instance,
Harry's feed of CONDUIT has gotten significantly worse (higher latencies)
now that thelma and marzipan are running LDM 6.

Comments?

Tom
--
+-----------------------------------------------------------------------------+
* Tom Yoksas                                             UCAR Unidata Program *
* (303) 497-8642 (last resort)                                  P.O. Box 3000 *
* address@hidden                                   Boulder, CO 80307 *
* Unidata WWW Service                            http://www.unidata.ucar.edu/ *
+-----------------------------------------------------------------------------+