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Sina Abolhoseini created an issue |
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Slow initial loading of layers in Geoserver from huge COGs stored in a AWS S3 |
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Issue Type: |
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Affects Versions: |
2.22.3 |
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Assignee: |
Unassigned |
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Components: |
Community modules |
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Created: |
17/Jun/23 3:59 PM |
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Environment: |
Geoserver version is: 2.22.3 |
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Priority: |
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Reporter: |
Medium|
Hello, I am working with huge COGs (around 500GB) stored on my private S3 bucket. I am trying to publish these COGs as GeoTiff layers using COG community module in Geoserver. The Geoserver is deployed on an EC2 instance with 8 vCPUs and 16Gb of RAM. The projection system of COGs is WGS84 (EPSG:4326) and I want to access the WMS in WGS84. The layers are published successfully, but when I want to access the WMS of these layers, the initial loading of the layers take about a couple of minutes. But when they are loaded, everything works smoothly and tiles are loaded pretty quick. Also, when the COG is smaller in size (less than 2GB), the initial loading is pretty good. I realized that first thing Geoserver does, is to load the header of the COG and then access the inner tiles. By default, Geoserver reads first 16KB of COGs to access the header. I have tried to increase |
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