[OSGeo-Discuss] WMS Performance Shootout presentation/results

[Craig Miller]

I agree wholeheartedly.  It looks like the bottleneck was the database.
I've been privy to some MapServer tests done by testing teams over several
months and the result there was always deploying the data with long update
cycles to the middle tier disks instead of using the database.  Only then
could the performance of the actual map servers be evaluated.  Performance
shootouts/testing take time to do correctly as each run teaches you more and
more about how your deployment architecture affects the results.

 

Craig

Geospatial Software Engineer

Spatial Minds, LLC <http://spatialminds.com/> 

 

From: discuss-bounces at lists.osgeo.org
[mailto:discuss-bounces at lists.osgeo.org] On Behalf Of antti roppola
Sent: Friday, October 23, 2009 7:34 PM
To: OSGeo Discussions
Subject: Re: [OSGeo-Discuss] WMS Performance Shootout presentation/results

 

It was really interesting. The very close results suggests to me that the
bottlenecks were external to the WMS and more related to external
limitations like the ability to supply things like I/O. It would be
interesting to have profiling data on where the response time was spent. For
Mapserver it'd be a simple case of running Valgrinf and KCacheGrind:

http://kcachegrind.sourceforge.net/cgi-bin/show.cgi/KcacheGrindIndex

Case point. We had an in house app for crunching big raster and KCacheGrind
showed us that an external library was the biggest bottleneck.

A.

On Sat, Oct 24, 2009 at 10:39 AM, Jeff McKenna
<jmckenna at gatewaygeomatics.com> wrote:

For those that did not make it to Sydney, here is the WMS Performance
Shootout presentation with results (GeoServer vs MapServer):

http://www.slideshare.net/gatewaygeomatics.com/wms-performance-shootout

MapServer: power users who manage MapServer sites with high loads/map draws
should
take note of the results of MapServer CGI vs MapServer FastCGI, even in
the case of Shapefiles and Rasters (yes, quite surprising).

All: a lot of credit should go to Andrea Aime from GeoServer who worked very
hard in bringing the MapServer team up to speed to learn the testing
process.  It was a great experience and we're already looking forward to
next year.

-jeff


-- 
Jeff McKenna
FOSS4G Consulting and Training Services
http://www.gatewaygeomatics.com/








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-- 
Jeff McKenna
FOSS4G Consulting and Training Services
http://www.gatewaygeomatics.com/


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