Limiting parallelism¶
You can restrict the number of parallel workflow executions.
Controller-level¶
You can limit the total number of parallel workflow executions in the workflow controller ConfigMap:
data:
parallelism: "10"
You can also limit the total number of parallel workflow executions in a single namespace:
data:
namespaceParallelism: "4"
Note
Workflows that are executing but restricted from running more nodes due to other mechanisms will still count toward parallelism limits.
Priority¶
You can set a priority on workflows:
apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
generateName: priority-
spec:
priority: 3
# ...
Workflows that have not started due to Controller-level parallelism will be queued: workflows with higher priority numbers will start before lower priority ones.
The default is priority: 0.
Synchronization¶
You can also use mutexes, semaphores, and parallelism to control the parallel execution of workflows and templates.