[gdal-dev] Fwd: GDAL open flags

[Laurențiu Nicola]

Hi Michał,

Without knowing a lot about the underlying implementation, I would expect those flags to make no difference in performance. They exist for safety reasons (so you don't modify a dataset by mistake), not as an optimization.

As for the docs, that seems expected. The documentation can't list all the things that a flag does not do.

Laurentiu

On Thu, Jan 16, 2025, at 09:16, Michał Kowalczuk via gdal-dev wrote:
> Any thoughts? :-)
> 
> ---------- Forwarded message ---------
> Od: *Michał Kowalczuk* <michkowalczuk at gmail.com>
> Date: wt., 14 sty 2025 o 12:41
> Subject: GDAL open flags
> To: <gdal-dev at lists.osgeo.org>
> 
> 
> Hi gdal-group!
> 
> Does GDAL_OF_READONLY / GDAL_OF_UPDATE have any impact on performance, especially when reading common vector files (shp, gpkg, gml)? There is no recommendation on this in docs.
> 
> Best regards,
> Michał Kowalczuk
> _______________________________________________
> gdal-dev mailing list
> gdal-dev at lists.osgeo.org
> https://lists.osgeo.org/mailman/listinfo/gdal-dev
> 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/gdal-dev/attachments/20250116/49b92568/attachment.htm>