[mapserver-dev] Performance issue with MS 7.x

[Pierre Mauduit]

Hi list,


On Mon, Feb 29, 2016 at 5:33 PM, thomas bonfort <thomas.bonfort at gmail.com>
wrote:

> For what kind of requests (WMS, WFS, raster, vector, ...)?
>
>
It was a WMS getmap onto a layer which gets its data from a shapefile. The
performance issue comes from the fact that the msGetProjectNormalized()[1]
call on the projections will need to create a new proj4 context with loads
of costly calls to strncmp(). The getmap request in 6.5 (official deb
package) shows that 6billions CPU cycles are needed, against more than 30
billions in 7.0.

I can provide more details if needed, regards,

[1]
https://github.com/mapserver/mapserver/blob/branch-7-0/mapproject.c#L1106-L1107

-- Pierre
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/mapserver-dev/attachments/20160229/5c8c0edf/attachment.html>