[mapserver-users] MapCache: Memory leak in WMTSCapabilities request?

[Schmid Andreas]

Hi

I'm running MapCache 1.10.0 in a Docker container. The image is based on debian:bullseye; Apache and MapCache is installed into the image with apt. Everything works fine; however when I set the health checks to regularly request the WMTS Capabilities at mapcache/wmts/1.0.0/WMTSCapabilities.xml, the memory usage of the container increases continuously. In a test setup with 12 of these requests per minute and no other requests, the increase is around 25MB per day.
When I set the health checks to simply request a certain tile, there is no such increase of memory usage.

Does this mean there is a memory leak in the WMTSCapabilities functionality? Something similar has been described in http://osgeo-org.1560.x6.nabble.com/Memory-leak-in-mapcache-td5401587.html two years ago, but no real solution has been found there.


Best regards,
Andy