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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
I would have responded to this thread earlier but I was out late last week. We had tons of problems with our ldm server running Linux last fall which sounds very similar to the behavior you are describing. I had migrated our LDM from Freebsd to Linux (Slackware, not that it makes much difference) and had huge problems with I/O waits bogging the entire system down. ...What version of the kernel were you running? For example $ uname -r 2.6.11-1.14_FC3smp Versions of the 2.6 kernel earlier than 2.6.10 (I think) appear to have a very bad I/O performance bug.
I built every release from 2.6.7 though 2.6.9. I though I had tried a release candidate 2.6.10 but it's not in my notes so I'm not sure of the details. I had given up a significant amount of time trying to get it to work and had to draw the line somewhere so I migrated back to Freebsd at the end of November. I may revisit Linux on our ldm next time we have a hardware upgrade, it just wasn't up to the task at the time.
-- Mark Tucker Meteorology Dept. Systems Administrator Lyndon State College http://apollo.lsc.vsc.edu mark.tucker@xxxxxxxxxxxxxxx (802)-626-6328
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