[mapguide-users] Two performance questions

alucas alucas at svl.es
Fri Feb 20 13:08:31 EST 2009

It would be nice to have the possibility to serve tiles from differents
servers like google or yahoo. This would be a great performance advance.


gingerbbm wrote:
> Dear all
> I've spent a while looking at the documentation, white papers, blogs and
> mailing lists in order to try and get a bit more performance out of our
> MGE2009 Windows installation using SDFs. We need to seed a tile cache with
> many tiles and the predicted execution times are very large. I have two
> questions:
> 1. Is there anything I can do to tweak ISAPI in the same way as is
> suggested for FastCGI? I suppose not because when I run Zac's seeder, Task
> Manager is showing all eight cores being utilised equally.
> 2. Is there any advantage in loading our SDFs into a repository? At the
> moment they're just external. This page...
>  http://sandbox.mapguide.com/index.php/Managed_versus_Unmanaged_Resources
> http://sandbox.mapguide.com/index.php/Managed_versus_Unmanaged_Resources 
> ...says "In general the performance of managed and unamanaged resources
> are the same", but Zac on his blog at...
>  http://zacster.blogspot.com/2008/10/mapguide-performance-tips.html
> http://zacster.blogspot.com/2008/10/mapguide-performance-tips.html 
> ...says "Always use Managed Resources, that is SDF's uploaded into the
> repository".
> And as a follow-on, how does the size of the SDFs affect performance when
> loaded and external? We're currently playing with some external ones of
> around 6GB (which work fine).
> Appreciate your thoughts on all this.
> Thanks
> Stuart

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