docker - Do --limit-xxx options of service command limit resource per service or per container? -

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service create command of docker 1.12 has 2 options limit cpu , memory follows:

  --limit-cpu value              limit cpus (default 0.000)   --limit-memory value           limit memory (default 0 b)

do limit resource per service or per container?

you can see in api/client/service/update.go

taskresources().limits = &swarm.resources{} updateint64value(flaglimitcpu, &task.resources.limits.nanocpus)

--limit-cpu introduced in commit 12a00e6

considering swarmkit/manager/scheduler/nodeinfo.go has, when removing task, following code:

nodeinfo.availableresources.nanocpus += reservations.nanocpus

it appears limit-cpu per node managed service.


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