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Merge pull request #16662 from rebornplusplus/main 

fix(engine): Minimum --kernel-memory is 6m
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Chris Chinchilla 2023-04-27 16:03:35 +02:00 committed by GitHub
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config/containers/resource_constraints.md
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@ -82,7 +82,7 @@ Most of these options take a positive integer, followed by a suffix of `b`, `k`,
| `--memory-swap`* | The amount of memory this container is allowed to swap to disk. See [`--memory-swap` details](#--memory-swap-details). |
| `--memory-swappiness` | By default, the host kernel can swap out a percentage of anonymous pages used by a container. You can set `--memory-swappiness` to a value between 0 and 100, to tune this percentage. See [`--memory-swappiness` details](#--memory-swappiness-details). |
| `--memory-reservation` | Allows you to specify a soft limit smaller than `--memory` which is activated when Docker detects contention or low memory on the host machine. If you use `--memory-reservation`, it must be set lower than `--memory` for it to take precedence. Because it is a soft limit, it does not guarantee that the container doesn't exceed the limit. |
| `--kernel-memory` | The maximum amount of kernel memory the container can use. The minimum allowed value is `4m`. Because kernel memory cannot be swapped out, a container which is starved of kernel memory may block host machine resources, which can have side effects on the host machine and on other containers. See [`--kernel-memory` details](#--kernel-memory-details). |
| `--kernel-memory` | The maximum amount of kernel memory the container can use. The minimum allowed value is `6m`. Because kernel memory cannot be swapped out, a container which is starved of kernel memory may block host machine resources, which can have side effects on the host machine and on other containers. See [`--kernel-memory` details](#--kernel-memory-details). |
| `--oom-kill-disable` | By default, if an out-of-memory (OOM) error occurs, the kernel kills processes in a container. To change this behavior, use the `--oom-kill-disable` option. Only disable the OOM killer on containers where you have also set the `-m/--memory` option. If the `-m` flag is not set, the host can run out of memory and the kernel may need to kill the host system's processes to free memory. |
For more information about cgroups and memory in general, see the documentation