[mapserver-dev] More Performance

[Daniel Morissette]

Paul Ramsey wrote:
> 
> Among the things Shark tells me is that the epsg configuration file
> remains the biggest (avoidable, but non-obvious) performance issue,
> potentially hogging huge amounts of resources, since the projections
> are loaded even for layers that aren't being rendered.  Even worse,
> it's a performance issue that fcgi doesn't fix, since the loading
> happens in msLoadMap.
> 

FYI I started discussing a solution for this in ticket #1976, I was 
thinking of caching the EPSG table directly inside PROJ, and suggested 
two options in this thread
http://lists.maptools.org/pipermail/proj/2007-August/003002.html

Then things stalled there... I'd like to hear more feedback from the 
mapserver-dev group on the proposed solution and which of the two 
proposed options is preferred. Once we have consensus from this group 
then I'll make a formal change proposal on the PROJ list.


> Another thing Shark tells me is that we are burning resources in
> curl_global_init (called from msHTTPInit via msHTTPInitRequestObj)
> even when there are no WMS or WFS layers defined.  This is eating
> about 5% of the total cycles, on a fairly well-tuned map file, and
> could be fixed.
> 

I just created a ticket and will work on that one now:
http://trac.osgeo.org/mapserver/ticket/2615

Daniel
-- 
Daniel Morissette
http://www.mapgears.com/