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

[LDM #YJB-290157]: System crashing due to LDM 6.7.0.0 (and previous?)

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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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: [LDM #YJB-290157]: System crashing due to LDM 6.7.0.0 (and previous?)
  • Date: Tue, 06 Nov 2007 10:16:35 -0700
Gilbert,

> I filed a bug with Fedora Core 7 for this kernel, which has been causing
> weather.admin.niu.edu to occasionally crash:
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=367141

Wow!  That's a pretty bad bug.

> But the programmers think that a program doing memory mapping is the
> culprit. Hmmm. Look at the error message and references and see if the LDM
> is any part of it.

There's not enough information in the bug ticket for me to decide if the
LDM is responsible.

> I had my LDM ldmd.pq file set at 200 MB, which was
> probably too small. Now it is set at 900 MB and is not crashing.
> Weather2.admin.niu.edu was on this same kernel with a 900 MB ldm.pq file
> size and did not crash. I suspect it is a small ldm.pq size causing this
> now, but I can't confirm, but either way, it shouldn't crash your system
> IF this is true.

I agree.  No user-space program should be able to crash the operating-
system.

Please keep me apprised.

> *******************************************************************************
> Gilbert Sebenste                                                     ********
> (My opinions only!)                                                  ******
> Staff Meteorologist, Northern Illinois University                      ****
> E-mail: address@hidden                                  ***
> web: http://weather.admin.niu.edu                                      **
> *******************************************************************************

Regards,
Steve Emmerson

Ticket Details
===================
Ticket ID: YJB-290157
Department: Support LDM
Priority: Normal
Status: Closed