Even Rouault

Starting with GDAL 3.6.0, if the GDAL_NUM_THREADS config option is set, reading in a TIFF/COG file a window of interest that intersects multiple tiles at one will use multithreaded decompression...

> Yeah, IIRC shared datasets are actually the opposite of the "open the file multiple times" trick. Instead, you (probably) get a mutex around each access, but end up with...

> CC @rouault long-term, how do you feel about [ExternalProject](https://cmake.org/cmake/help/latest/module/ExternalProject.html) (SuperBuild)? I miss some contextual elements to understand your question

ok, I see. That's something I've considered, but I'd be hesitant to go into that business, as it equates to creating yet another packaging system, and for GDAL, with all...

> QGIS 3.36 is currently available for bullseye https://qgis.org/en/site/forusers/alldownloads.html#repositories. The Py 3.10+ requirement would be for 3.38 only, with 3.36 being the last one packaged for Bullseye

> Are you aware of any formats which store this information? no, nothing comes to mind.

so we have those failures: ``` 136 - test_core_networkaccessmanager (Timeout) 356 - test_app_maptooladdpart (Failed) ``` The first one is likely a random flake (I'm restarting the build to test that),...

> Take note that I've been able to reproduce the hang with this file on only one of two machines I tested, so you might not immediately observe it. This...

> What would you recommend I try setting GDAL_CACHEMAX to, to influence this behavior? first, run your code with CPL_DEBUG=ON and look at the "GDAL: GDAL_CACHEMAX = xxxx MB" trace...

If your GeoTIFF is uncompressed, you may also try setting the GTIFF_DIRECT_IO=YES configuration option (see https://gdal.org/drivers/raster/gtiff.html#configuration-options)