It basically doesn't matter how much memory I give the thing - if I have all the services enabled, it crashes after about a day. I'm still in the process of figuring out what service (+file) exactly causes the crash. At the moment, I have only HTTP fileserver, ISO and NCML enabled and this seems to run fine. The thing is, you need to block services at the server (proxy) level, see also <https://github.com/Unidata/tds/issues/609>. Otherwise, all the LLM crawlers that nowadays populate the web will "find" the service, call it and potentially crash the THREDDS.
Florian On 2025-08-27 20:33, Chris Woelkers - NOAA Federal wrote:
Since I've gotten our public THREDDS server running I am having to restart it more often than expected, currently about once every two weeks. Every time I check the error logs I see the same message: java.lang.OutOfMemoryError: Java heap spaceI have increased the heap space sizes multiple times and am currently running with 4096m of initial space and 16384m of max space. Obviously that is not enough but I would rather not increase it again as this server is running out of unused memory space and just giving the application more memory hasn't worked yet. Having it set at 16G is already high for a Java application, at least from what I can gather from Internet resources, so I am wondering if anyone has any recommendations on what might be done. The server is running Debian 11 and THREDDS 5.6 is running on top of Tomcat 10.1.36 with an upgrade planned to the latest version of Tomcat and a further upgrade in the future to Debian 12.Thanks, Chris Woelkers IT Specialist National Oceanic and Atmospheric Administration Great Lakes Environmental Research Laboratory 4840 S State Rd | Ann Arbor, MI 48108 Office: 734-741-2446 Cell: 734-604-0059 Voice: 734-219-3815 _______________________________________________ thredds mailing list thredds@xxxxxxxxxxxxxxxx To subscribe:thredds-join@xxxxxxxxxxxxxxxxTo unsubscribe:thredds-leave@xxxxxxxxxxxxxxxx
-- +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Dr. Florian Obersteiner (he/him)Karlsruhe Institute of Technology (KIT)
Hermann-von-Helmholtz-Platz 1 D-76344 Eggenstein-Leopoldshafen, GermanyInstitute of Meteorology and Climate Research,
Atmospheric Trace Gases and Remote Sensing (IMKASF) Data Management & IT Building 435, Room 408 Phone: +49 721 608 28353 Web:https://www.imk-asf.kit.edu/ +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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