[postgis-users] geocoding is very slow

[Shawn Peterson]

Hi Regina,

Thanks for the tips. I tried "SELECT install_missing_indexes();" but it
does not help.

My OS information:

PostgreSQL 9.2.4 on x86_64-unknown-linux-gnu, compiled by gcc (SUSE Linux)
4.3.4 [gcc-4_3-branch revision 152973], 64-bit POSTGIS="2.0.4SVN r11295"
GEOS="3.3.8-CAPI-1.7.8" PROJ="Rel. 4.8.0, 6 March 2012" GDAL="GDAL 1.9.2,
released 2012/10/08 GDAL_DATA not found" LIBXML="2.9.0" RASTER


I'll try to install PostGIS 2.1 to see if it helps.

Thanks,
Shawn



On Mon, Apr 22, 2013 at 12:30 PM, Paragon Corporation <lr at pcorp.us> wrote:

> **
> Shawn,
> Well it should be somewhere between 40-200ms.
>
> So yah something seems wrong there. Usual culprit is missing indexes.
>
> Try:
>
> SELECT install_missing_indexes();
>
>
> I don't have California data loaded so can't compare and am also running
> with PostGIS 2.1 tiger_geocoder which has some major improvements.
> Which OS are you running on?
>
> SELECT version() || ' ' || postgis_full_version();
>
>
> Hope that helps,
> Regina
> http://www.postgis.us
> http://postgis.net
>
>
>  ------------------------------
> *From:* postgis-users-bounces at lists.osgeo.org [mailto:
> postgis-users-bounces at lists.osgeo.org] *On Behalf Of *Shawn Peterson
> *Sent:* Monday, April 22, 2013 2:05 PM
> *To:* postgis-users at lists.osgeo.org
> *Subject:* [postgis-users] geocoding is very slow
>
>  I have successfully installed postgresq and postgis. I tried the
> examples (addresses in MA) from
> http://postgis.refractions.net/docs/Geocode.html and the speed seems
> fine. However, when I tested it on addresses from CA, it is extremely slow:
>
> (~ 2 min 20 sec)
> SELECT g.rating, ST_Y(g.geomout) As lat, ST_X(g.geomout) As lng,
> (addy).address As stno, (addy).streetname As street,
> (addy).streettypeabbrev As styp, (addy).location As city,
> (addy).stateabbrev As st,(addy).zip
> FROM geocode('*7788 Regents Road, San Diego, CA 92122*') As g;
>
> (~ 2 min 40 sec)
> SELECT g.rating, ST_Y(g.geomout) As lat, ST_X(g.geomout) As lng,
> (addy).address As stno, (addy).streetname As street,
> (addy).streettypeabbrev As styp, (addy).location As city,
> (addy).stateabbrev As st,(addy).zip
> FROM geocode('*675 Westwood Plaza, Los Angeles, CA 90024*') As g;
>
> My goal is to do bulk geocoding. With the current speed I would have to
> give up postgis. Can anyone help? Any input is appreciated!
>
> P.S.: Here is some information for my system:
> CPU: Intel Xeon 2.67GHZ
> postgresql: 9.2.4
> postgis: 2.0.4SVN
>
> I've tried to adjust some parameters in postgresql.conf, but it's still as
> slow as with default parameters:
> shared_buffers = 500MB
> work_mem = 16MB
> maintenance_work_mem = 16MB
> wal_buffers = 1MB
> checkpoint_segments = 6
> seq_page_cost = 1.0
> random_page_cost = 2.0
> join_collapse_limit = 2
>
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>
>
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