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Merge pull request #24682 from justincormack/oom-score-adj-doc

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Document --oom-score-adj flag in docker run
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Sebastiaan van Stijn 2016-07-16 03:00:51 +02:00 committed by GitHub
commit 9ad857a788
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6
docs/reference/run.md
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@ -698,6 +698,7 @@ container:
| `--device-read-iops="" ` | Limit read rate (IO per second) from a device (format: `<device-path>:<number>`). Number is a positive integer. |
| `--device-write-iops="" ` | Limit write rate (IO per second) to a device (format: `<device-path>:<number>`). Number is a positive integer. |
| `--oom-kill-disable=false` | Whether to disable OOM Killer for the container or not. |
| `--oom-score-adj=0` | Tune container's OOM preferences (-1000 to 1000) |
| `--memory-swappiness=""` | Tune a container's memory swappiness behavior. Accepts an integer between 0 and 100. |
| `--shm-size=""` | Size of `/dev/shm`. The format is `<number><unit>`. `number` must be greater than `0`. Unit is optional and can be `b` (bytes), `k` (kilobytes), `m` (megabytes), or `g` (gigabytes). If you omit the unit, the system uses bytes. If you omit the size entirely, the system uses `64m`. |
@ -830,7 +831,10 @@ The following example, illustrates a dangerous way to use the flag:
$ docker run -it --oom-kill-disable ubuntu:14.04 /bin/bash
The container has unlimited memory which can cause the host to run out memory
and require killing system processes to free memory.
and require killing system processes to free memory. The `--oom-score-adj`
parameter can be changed to select the priority of which containers will
be killed when the system is out of memory, with negative scores making them
less likely to be killed an positive more likely.
### Kernel memory constraints