Hello everyone, I am working on optimizing a GDAL application that uses RasterIO and GeoTiff. I am using the C++ library.
I would like to experiment with different ConfigOptions, but they have no effect on the application. I specify them in an environment variable and directly in the code. I am especially interested in GTIFF_DIRECT_IO. I use blktrace I/O trace to check. It traces all I/O operations, and through it I see that the application sends "RA" operations, which means readahead. The readahed operations only happen when buffered I/O is enabled, and readahead operations should no longer happen when direct I/O is enabled. Could you please help me with the correct use of ConfigOptions? Cheers, Azat _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/gdal-dev
