[sldev] Yeah for Second Life 1.23.2 (2324)

[Philippe Bossut (Merov Linden)]

Hi all,

On May 28, 2009, at 2:29 PM, C J Owen wrote:
> The map now loads ridiculously fast, an order of magnitude over non  
> http
> fetch. This is *very* impressive.

Thanks CJ. Note however that most of the speed improvement (when  
zooming in and out) has nothing to do with http fetching but with the  
fact that we're now using the whole set of subresolution tiles stored  
on amazon S3 server. The previous (or currently existing viewer map)  
loads one tile *per region* regardless of the zoom level you're in.  
So, potentially, when zooming out really far, that maps loads on tile  
per region for the entire grid and subsample that to display the map.  
The new code loads the low resolution tiles and never fetches more  
pixels than needed to display on screen. A substantial saving... The  
consequence is a zooming speed equivalent to the SLURL Google map.

The http fetch speed should show up only when zoomed in to the max.  
It's faster than the old map also (smaller tiles to start with since  
jpg images in that case are smaller than j2c + the fact we're not  
hitting the big LL asset server but the amazon S3) but not by an order  
of magnitude.

Cheers,
- Merov