[mapguide-users] Performance Tips

[Andrew DeMerchant]

Are you using any raster layers? Those can certainly slow things down if 
they are large. If you want a really fast application, in my opinion you 
need to turn off any rasters by default. Even a 1Mb MrSID can slow 
things down quite a bit. If you take that same MrSID and make it into a 
JPEG, it seems to work better. In my application, I have about 8 MrSID 
images. If I make the mistake of zooming all the way out, and turning on 
the raster group, I've got to wait a minute for them to all load. A JPG 
of the same area is much faster.

As for filters / themes, I've noticed no impact on performance from 
themes....in the past, I've noticed filters could slow things down. I'd 
be more inclined to use themes, personally....The big problem with that 
though is that you then can't turn off any 1 part of that themed layer 
(like you could if you had a bunch of filters layers). Maybe that's 
something that we could add to the wishlist though....

Andrew



Campbell, Keith A wrote:
>
> I'd be very interested to hear what people have found that have a big 
> impact on performance. After spending some time just working around 
> problem after problem to get an application ready for production, I 
> now find that the app may be just too slow in the clients environment 
> to be of any use. I can guess at a few like size of map, number of 
> layers, complexity and format of data sources. What is good practise? 
> What can be tweaked to make things faster? Can the image type (of the 
> map) and resolution be changed? Is one themed layer better than 
> several filtered layers? I realise there are hardware factors that 
> will make a big difference, but I'd prefer to focus on software 
> configuration at this point.
>
> Keith
>
>
>
> *This email and any attached files are confidential and copyright 
> protected. If you are not the addressee, any dissemination of this 
> communication is strictly prohibited. Unless otherwise expressly 
> agreed in writing, nothing stated in this communication shall be 
> legally binding.*
>

-- 
	*Andrew DeMerchant*
*Computer Technologist*
ph.1-877-2GEMTEC x.163
fax 506-453-9470

/GEMTEC Limited <http://www.gemtec.ca>
/191 Doak Road
Fredericton, NB, Canada
E3C 2E6

-------------- next part --------------
Skipped content of type multipart/related