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Info about shared memory error

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issue #3
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Grzegorz Adam Kowalski 2019-03-19 16:47:57 +01:00
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@ -35,6 +35,21 @@ The import and tile serving processes use 4 threads by default, but this number
docker run -p 80:80 -e THREADS=24 -v openstreetmap-data:/var/lib/postgresql/10/main -d overv/openstreetmap-tile-server run
## Troubleshooting
### ERROR: could not resize shared memory segment
If you encounter such entries in the log, it will mean that the default shared memory limit (64 MB) is too low for the container and it should be raised:
renderd[126]: ERROR: failed to render TILE ajt 6 32-39 16-23,
renderd[126]: reason: Postgis Plugin: ERROR: could not resize shared memory segment
To raise it use `--shm-size` parameter. For example:
docker run -p 80:80 -v openstreetmap-data:/var/lib/postgresql/10/main --shm-size="192m" -d overv/openstreetmap-tile-server run
For too high values you may notice excessive CPU load and memory usage. It might be that you will have to experimentally find the best values for yourself.
## License
```