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

[IDD #TJZ-904221]: castor.rcac.purdue.edu upgrade

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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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: [IDD #TJZ-904221]: castor.rcac.purdue.edu upgrade
  • Date: Wed, 09 Apr 2014 17:19:05 -0600
Hi Don,

Sorry for taking so long to get back to you...

re:
> I have attached the output of "ldmadmin config".

What I see from this listing is that your LDM queue size is the default
which is 500 MB.  Since castor relays NEXRAD2 data, this is too small
since the queue residency time for products is low.  I recommend that
you increase your queue size to something larger, but exactly how large
depends on how much physical RAM is installed in the machine and what
other things it is doing other than gather and relay NEXRAD2 data.

For instance, if castor is only collecting and relay NEXRAD2 data
I would setup the queue size like this:

RAM     LDM queue size
8 GB    6 GB
16 GB   12-14 GB
etc.

re:
> I have also attached a copy of /var/log/messages.

If the LDM log file does not exist or is not being updated,
you need to work on configuring your system to correctly
log.  This way LDM log messages will not be put into
/var/log/messages and will be viewable by a non-'root'
user.

re:
> I'm not sure if I see anything abnormal in it.

I don't see anything obvious, but it would be easier to review
the LDM-related log messages if LDM logging were working.  I
can help you get this working if I knew more about your machine
(e.g., OS, if you are using syslogd/rsyslogd, etc.)

re:
> Thanks!

No worries.

Cheers,

Tom
--
****************************************************************************
Unidata User Support                                    UCAR Unidata Program
(303) 497-8642                                                 P.O. Box 3000
address@hidden                                   Boulder, CO 80307
----------------------------------------------------------------------------
Unidata HomePage                       http://www.unidata.ucar.edu
****************************************************************************


Ticket Details
===================
Ticket ID: TJZ-904221
Department: Support IDD
Priority: Normal
Status: Closed