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Clarify docs

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Nicolas Mowen 2024-09-03 08:47:24 -06:00
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docs/docs/frigate/installation.md
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@ -73,11 +73,11 @@ Users of the Snapcraft build of Docker cannot use storage locations outside your
Frigate utilizes shared memory to store frames during processing. The default `shm-size` provided by Docker is **64MB**.
The default shm size of **64MB** is fine for setups with **2 cameras** detecting at **720p**. If Frigate is exiting with "Bus error" messages, it is likely because you have too many high resolution cameras and you need to specify a higher shm size, using [`--shm-size`](https://docs.docker.com/engine/reference/run/#runtime-constraints-on-resources) (or [`service.shm_size`](https://docs.docker.com/compose/compose-file/compose-file-v2/#shm_size) in docker-compose).
The default shm size of **128MB** is fine for setups with **2 cameras** detecting at **720p**. If Frigate is exiting with "Bus error" messages, it is likely because you have too many high resolution cameras and you need to specify a higher shm size, using [`--shm-size`](https://docs.docker.com/engine/reference/run/#runtime-constraints-on-resources) (or [`service.shm_size`](https://docs.docker.com/compose/compose-file/compose-file-v2/#shm_size) in docker-compose).
The Frigate container also stores logs in shm, which can take up to **40MB**, so make sure to take this into account in your math as well.
You can calculate the necessary shm size for each camera with the following formula using the resolution specified for detect:
You can calculate the **minimum** shm size for each camera with the following formula using the resolution specified for detect:
```console
# Replace <width> and <height>