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Heiko, Did you ever figure this out? We just had our thredds4.0.26/tomcat6.0.18 crash with "Too man open files" also. -Rich On Fri, Sep 18, 2009 at 4:53 AM, Heiko Klein <Heiko.Klein@xxxxxx> wrote: > Hi, > > we just had a crash of the thredds4.0.25/tomcat server and I was able to > analyse a bit the system before the operators restarted it. > > Error message was: 'Too many open files' and checking the open files with > lsof or /proc/PID/fd showed 1021 open netcdf-files for the tomcat-pid. We > haven't made any changes to the thredds4 configuration concerning the > file-caches, so they should be between 200-400. We're using WCS, too, so > this might add some more files, but still not up to 1021. > > We also use some aggregations of netcdf files, so one 'thredds-aggregation' > might consist of some hundred netcdf-files. Maybe this is counted as one > file in the fileCache? > > I currently try to avoid further crashes by increasing the ulimit -n from > 1024 to 16384, but I would rather be able to tune the file-cache properly > instead of throwing more resources at it. > > > Best regards, > > Heiko > > -- > Dr. Heiko Klein Tel. + 47 22 96 32 58 > Development Section / IT Department Fax. + 47 22 69 63 55 > Norwegian Meteorological Institute http://www.met.no > P.O. Box 43 Blindern 0313 Oslo NORWAY > > _______________________________________________ > thredds mailing list > thredds@xxxxxxxxxxxxxxxx > For list information or to unsubscribe, visit: > http://www.unidata.ucar.edu/mailing_lists/ > -- Dr. Richard P. Signell (508) 457-2229 USGS, 384 Woods Hole Rd. Woods Hole, MA 02543-1598
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