[MapProxy] "Stuck" requests and Apache

[Paul Norman]

> From: mapproxy-bounces at lists.osgeo.org [mailto:mapproxy-
> bounces at lists.osgeo.org] On Behalf Of Paul Norman
> Sent: Monday, November 11, 2013 11:29 AM
> To: mapproxy at lists.osgeo.org
> Subject: [MapProxy] "Stuck" requests and Apache
> 
> The only differences I can see between the two layers are
> - mapnik vs mapserver
> - png8 vs 32-bit PNGA
> - concurrent_requests
> 
> I'm going to try adjusting concurrent_requests and see if that helps
> matters, but otherwise I'm out of ideas.

I've now debugged it in more detail.

Both layers work fine with serve-develop. The mapnik-based layer 
doesn't generate new tiles with the mod_wsgi apache deployment. I have
checked
tile cache dir permissions and they are owned by www-data, and I tried with
them
as 777 without any luck.

I'm mystified why one works and the other doesn't. Any thoughts?