On Wed, 6 May 2020 at 08:19, Johanna Botman <[email protected]> wrote:

> What I do know is that the refresh – or my ability to edit and save data - in 
> the attribute table slows down when multiple users are editing the same 
> table. And I know that this behaviour has become worse now that we are all 
> working from home and have the added ‘hops’ in the network created by our 
> home Wi-Fi and VPN.

Unless you do have multiple users sharing a single machine (e.g. via
remote desktop or similar), then this is almost certainly a database
or network issue*. If everyone is running distinct QGIS sessions on
different machines then it's highly unlikely that you'd also see the
same issues arise at the same time of day.

* Unless it's a plugin related issue. I'm aware of some plugins which
are badly written and cause gradual slow-downs over the course of a
single QGIS session. So possibly if you ALL had a bad plugin installed
and ALL started a fresh QGIS session at the start of the day then you
may experience simultaneous slow downs in the afternoon. The fix for
this would be starting a clean profile with no plugins installed and
testing.

Nyall



>
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> Our workaround today will be to try to make sure that only one person is in a 
> particular table at a time.
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> Johanna, I'm struggling to understand your configuration here.
>
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> Are you working via some kind of remote desktop software? It sounds like it.
>
>
>
> What is your theory as to why response time is worse in the afternoon? Is 
> your connection to your office being overloaded? Is your office's connection 
> to the cloud database also being overloaded? Do your IT support people have 
> any thoughts on why response is worse in the afternoon?
>
>
>
> The reason I'm keying on this is that one possibility is that your network 
> infrastructure is slightly insufficient for the morning load and completely 
> insufficient for the afternoon load.
>
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> On the contrary, if your database is starved of resources, why is it worse 
> now than when you were working from the office? Again your IT people should 
> be able to look at log info or otherwise instrument your server to find out 
> if it's the problem (having suggested this I admit I wouldn't use SQL Server 
> and know nothing about tuning it).
>
>
>
> Can you run a different configuration, say with QGIS on your home computer 
> and some kind of database proxy in your office, or even a direct connection 
> to the cloud database (assuming I've guessed your configuration correctly)?
>
>
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> Users love to blame the software. That’s what they are interacting with, but 
> I don’t believe that it is all QGIS’ problem. I’d prefer to blame a database 
> that appears to not respond well to a multi user environment.
>
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> I'd be inclined to blame the network first, since that's what it sounds like 
> has changed.
>
>
>
> Chris
>
>
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