Yes, as far as I know, the NAS unit uses SMB as the file sharing protocol. I used another NAS from QNAP before this one, also using SMB and with the same problem. I thought pretty much all of the Linux based NAS units were using SMB and if that is the problem, it should be widespread, but I don't see any signs of that. Is SMB a problem for geopackage? I did a quick test in QGIS: A dataset of 178.000 line features is rendered in about 1 second from a read only geopackage. When I remove the read only flag, it is rendered in about 5 seconds. If I store the geopackage on the local hard drive, the problem disappears, read-write or read-only does not matter. I have had suspicions about SMB being part of the problem but I don't know enough about file access deep down in the operating system to understand it.
Árni Geirsson On Thu, 16 Mar 2023 at 01:45, jhubbslist--- via QGIS-User < qgis-user@lists.osgeo.org> wrote: > Árni - > > Are you using SMB/CIFS to access this NAS, and are you using wifi or > Ethernet to connect to it? > > - Jeff > > On 3/15/23 3:30 PM, Árni Geirsson via QGIS-User wrote: > > Hello all QGIS and geopackage users. > I store my geopackages on a Synology RackStation NAS unit, like all other > documents that are kept on a shared drive in the office. For larger > datasets, the rendering is very slow, unless I open the properties dialog > for the file in Windows and check the read only box. After that, the > features are rendered blazingly fast. Nothing else is changed to see the > dramatic difference in the rendering speed. Luckily, I don't need to edit > many of the larger datasets, such as road networks and elevation contours > and the geopackage can be kept read only. Shapefiles are not affected. > What explains this and does anyone know how to solve the problem? > Do other users experience this? > > Árni Geirsson > > _______________________________________________ > QGIS-User mailing listqgis-u...@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > > > _______________________________________________ > QGIS-User mailing list > QGIS-User@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user >
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