[geos-devel] Re: Buffer gets 20 times faster

[Paul Ramsey]

I didn't do any buffer speed tests in Toronto. In fact, I don't think
I did any PostGIS profiling. You could use the states.shp file from
the GeoServer download as an example of "ordinary" data.

P

On Tue, Apr 14, 2009 at 1:58 AM, strk <strk at keybit.net> wrote:
> Good news: bringing the Buffer package in sync with JTS-1.9+
> results in some buffer operations completing in 1/20 of the time
> they used to.
>
> In particular, the fme.xml testcase under tests/xmltester runs now in
> 1.04 seconds while it took ~ 21.89 in geos-3.1.0.
>
> This is due to both robustness and performance improvements.
> Robustness results in the operation being performed only once
> rather than 3 times each at reduced precision. Performance still
> beats this much lower the nominal 7 seconds you get by dividing
> the original time.
>
> Time for testing some known dataset here.
>
> Paul, where can I find the dataset you used at the Toronto Sprint
> for such tests ?
>
> --strk;
>
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