[Qgis-developer] Why is scrolling in the attribute table so slow?

[Nathan Woodrow]

Andreas,

If your using PostGIS there seems to be some open/close connection bug.  If
you look at the debug log for QGIS while you click, scroll or do anything
in a PostGIS backed datasource you will see a lot of database requests.

I haven't filed a bug yet but I will if you can confirm the same on your
end.

- Nathan


On Thu, Nov 24, 2011 at 8:57 PM, Andreas Neumann <a.neumann at carto.net>wrote:

> Hi,
>
> I am wondering why scrolling in the QGIS attribute table is so extremely
> slow.
>
> My attribute table is not very big: 351 rows by 23 columns. I have a
> rather fast machine (Core i7, 8GB RAM, Win7),
>
> The same table in pgAdmin scrolls very fast (like in Excel or Openoffice),
> in QGIS, the refresh rate while scrolling vertically is approx. once per
> second, when scrolling horizontally I get an update every 2 seconds? Too
> slow for my taste and my users.
>
> Is there any room for improvements?
>
> I think this is a serious issue if already such small tables are so slow.
> Real data can have hundreds of thousands of records or millions ...
>
> Thanks if you have any ideas.
>
> Andreas
>
> --
> --
> Andreas Neumann
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> 8624 Grüt (Gossau ZH)
> Switzerland
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