Re: [mapserver-users] Very poor WMS tiling performance with small area, ultra-high resolution image

2016-02-15 Thread Avi Blackmore
On Feb 15, 2016, at 1:16 AM, Schepers, Benjamin wrote: > Hi, > > you still pointed to the right answer, strategies like overviews and tiling > are IMHO not scale-dependent. They depend on the pixel-dimension of the image > and you have - let’s say - a not so small one ;-) > > So converting

Re: [mapserver-users] Very poor WMS tiling performance with small area, ultra-high resolution image

2016-02-14 Thread Schepers, Benjamin
An: mapserver-users@lists.osgeo.org Betreff: [mapserver-users] Very poor WMS tiling performance with small area, ultra-high resolution image Hello, We've been using Mapserver as, among other things, a WMS server for some time with satellite and aerial imagery, without probl

Re: [mapserver-users] Very poor WMS tiling performance with small area, ultra-high resolution image

2016-02-12 Thread Stephen Woodbridge
What is the file format? This has a huge impact on the memory and compute tile to extract a random bbox of pixels. In some formats you have to extract the WHOLE image to grab any subset of pixels which could be your problem. -Steve W On 2/12/2016 5:28 PM, Avi Blackmore wrote: Hello, We've

[mapserver-users] Very poor WMS tiling performance with small area, ultra-high resolution image

2016-02-12 Thread Avi Blackmore
Hello, We've been using Mapserver as, among other things, a WMS server for some time with satellite and aerial imagery, without problems. We've been able to serve imagery of resolutions down to .25 meters without any significant performance hit. Today, we got a sample image fr