Thanks Jukka,
I did
gdaladdo -r average mytiff.tif 2 4 8 16
which sped it up to around 500ms expect for on closer zooms.
I am not sure how I can do this
gdal_translate -of GTiff -projwin -180 90 -50 -10 -co "TILED=YES"
bigDataSet.ecw myTiff.tiff
I don't have an ecw file. Just the provided tiff from the FAA.
On Tue, Aug 29, 2017 at 12:43 PM, Rahkonen Jukka (MML) <
jukka.rahko...@maanmittauslaitos.fi> wrote:
> Hi,
>
>
> You can check the structure of your source image with gdalinfo utility
>
> http://www.gdal.org/gdalinfo.html. Most important thing in this case is
> this:
>
>
> Band 1 Block=16645x1 Type=Byte, ColorInterp=Palette
>
>
> Large tiff files which are organised in rows are unsuitable for servers
> which need a fast access to arbitrary regions inside the image. Also this
> image is without overviews which are ready made subsampled versions of the
> image.
> Read Setup Geotiff data for fast rendering from http://docs.geoserver.
> org/stable/en/user/production/data.html?,
> <http://docs.geoserver.org/stable/en/user/production/data.html> follow
> the insructions for making an internally tiled tiff with overviews and you
> will get much faster service.
>
> -Jukka Rahkonen-
>
>
> ------------------------------
> *Lähettäjä:* Scott Murphy <sc...@alwaysvip.com>
> *Lähetetty:* 29. elokuuta 2017 21:04
> *Vastaanottaja:* geoserver-users@lists.sourceforge.net
> *Aihe:* [Geoserver-users] Slow 2-4 second WMS tile rendering from GeoTIFF
> Store
>
> Hello Everyone,
>
> I am new to GeoServer and I just had a performance question. I am
> interested in displaying the Federal Aviation Administrations pilot charts.
> I attempted to store a chart on geoserver, but it seems very slow when I
> preview it in OpenLayers. Each tile takes anywhere from 2 to 4 seconds to
> load.
>
> The source Los_Angeles_SEC_101.tif file is 69 MB and is available for
> download here:
> http://aeronav.faa.gov/content/aeronav/sectional_files/Los_Angeles_101.zip
> Which was listed on this page:
> https://www.faa.gov/air_traffic/flight_info/aeronav/digital_products/vfr/
>
> Here are the steps I used to set up my GeoServer.
>
>
> 1. I deployed tomcat on Amazon Web Services then copied geoserver.war
> with the chart added inside the data folder.
> 2. http://geoserver2.us-east-1.elasticbeanstalk.com/web/
> 3. Changed Administrator password
> 4. Deleted all existing workspaces
> 5. Created a new workspace faa
> 6. Add a new Store
> 1. GeoTIFF
> 1. Workspace: faa
> 2. Data Source Name: Los Angeles
> 3. Description: 101 – Jun 22 2017
> 4. Enabled: checked
> 5. URL: file:data/Los_Angeles_101/Los_Angeles_SEC_101.tif
> 7. New Layer - Los_Angeles_SEC_101
> 1. Publish
> 2. Data
> 1. Declared SRS - I am guess on this one. I chose
> WRF_Lambert_Conformal_Conic 2
> 2. SRS handling - I am guess on this one. I chose keep native
> 3. Save
> 8. Layer Preview
> 9. http://geoserver2.us-east-1.elasticbeanstalk.com/faa/wms?
> service=WMS&version=1.1.0&request=GetMap&layers=faa:Los_
> Angeles_SEC_101&styles=&bbox=-351020.4576958068,-245067.
> 92468142207,353646.13725918817,277738.9876785168&
> width=768&height=569&srs=EPSG:45555&format=application/openlayers
>
> <http://geoserver2.us-east-1.elasticbeanstalk.com/faa/wms?service=WMS&version=1.1.0&request=GetMap&layers=faa:Los_Angeles_SEC_101&styles=&bbox=-351020.4576958068,-245067.92468142207,353646.13725918817,277738.9876785168&width=768&height=569&srs=EPSG:45555&format=application/openlayers>
> 10. If I hit the zoom out button 3 times, I see my chart.
>
> Now if I try and move around, zoom in and out, etc. Each tile takes
> anywhere from 2-4 seconds. I really need a solution that can render in less
> than 500ms. Is this possible? What do I need to do to get the server
> responding faster?
>
> Best,
>
> Scott
>
>
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