Often, we need to open many raster files over a network connection with
thousands of other files residing in the same directory.
Previously, we were using version 1.7.0 of GDAL (from FW Tools), and we used
SetConfigOption("GDAL_DISABLE_READDIR_ON_OPEN", "TRUE")
to suppress the automatic search for sibling files. This approach served us
well.
We upgraded to 1.8.0. It was quite a bit slower opening the raster files.
I was able to get GDAL built in debug and stepped through the code and
discovered the following:
1. It searches for several files containing RPC metadata.
2. It searches for files for PAM as well.
I was able to use SetConfigOption("GDAL_PAM_ENABLED", "NO") to suppress
searching for PAM files.
However, I do not see a way to suppress searching for RPC metadata. Does
anyone know of a way to do this or other workarounds? If there is no way to
currently do this, is the community open to adding this option?
I apologize if this question has been posted previously, but I haven't yet
found a convenient way to search the archives.
Thanks,
Kyle
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