[geos-devel] Update to 3.9?

[Paul Ramsey]

> On Nov 24, 2020, at 5:01 PM, Regina Obe <lr at pcorp.us> wrote:
> 
> 
>> All the performance talk is mostly because JTS still runs a lot faster
> than GEOS
>> for some bulk processing. My current test is a big union of watershed
>> boundaries, about 6MB of data, which takes about 20s under GEOS and
>> about 25% of that under JTS.  It's a big gap, and in theory the two code
> bases
>> are pretty aligned right now. Same overlayNG engine, etc. So I figure
> there
>> has to be a big implementation ball of performance hiding under the covers
>> somewhere. No luck thus far.
>> 
>> I think we're close, looking forward to release :)
>> 
>> P
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> 
> You have your sample watershed data set.  Would like to test it out myself.

https://www.dropbox.com/s/9ruvs6gxe3yl93c/wsa_vi.sql.bz2?dl=0

I union all these. It takes about 20s on my Air. 

p

> 
> Thanks,
> Regina
> 
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