Hi Aleda,
Yeah, wfs 1.1 is quite a bit slower than wfs 1.0 due to the gml3 encoding. Benchmarks put it at about 2 times slower. You can see this presentation for the benchmarks:
http://presentations.opengeo.org/2008_FOSS4G/WebMapServerPerformance-FOSS4G2008.pdf
The speed improvements between 1.6.x and 1.7.x with wfs 1.0 are probably just due to improvements in the ArcSDE datastore.
Looking over the benchmarks you supplied some of the results puzzling. For instance the benchmarks for 1 and 2 have wfs 1.1.0 being faster... which should really never be the case.
Were these benchmarks made with a "warmed up" geoserver instance? SOmetimes times can be skewed if a request has to incur any initialization costs.
Also, trying a few of the requests it seems many of them return ServiceExceptions. I don't know if this is b/c of something being down. But we have found that during benchmarks this can be a false positive.
But great to see this sort of comparison.
-Justin
Freeman, Aleda (EEA) wrote:
Josh Rosenthal was asking me questions about the speeds of different types of WFS queries so we decided to test them and make a table of results.
We have GeoServer 1.6.5 on one machine and GeoServer 1.7.2 on another, both however are pointed to the same SDE database.
We tried different WFS queries (different ways of asking - URL or XML, different outputs - GML or JSON, and different versions of WFS - 1.1.0 and 1.0.0).
The dataset used is pretty heavy - 1,068,634 polygons. We threw a few shapefile tries in as well.
What jumps out for us is that WFS 1.0.0 and GeoServer 1.7.2 is a very fast combination.
WFS 1.1.0 and GeoServer 1.7.2 are not as fast. Do other people see this?
Was there a specific speedup in 1.7.2 for WFS 1.0.0?
Just wondering 
All the gory details if anyone's interested:
_http://lyceum.massgis.state.ma.us/wiki/doku.php?id=query_benchmarks&s=matrix_ <http://lyceum.massgis.state.ma.us/wiki/doku.php?id=query_benchmarks&s=matrix>
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Justin Deoliveira
OpenGeo - http://opengeo.org
Enterprise support for open source geospatial.