Performance

Concurrency

Concurrency is the number of tasks that can be in progress during the same period. In CI it commonly means simultaneous jobs, while available processors and scheduling determine how much work actually executes in parallel.

Also known as: concurrent jobs

Why it matters

The number of active jobs affects capacity requirements and feedback under load.

Practical example

A ten-job matrix may remain partly queued if only four runner slots are available.

Related terms

Sources

Definition reviewed .

Start with $10 in free credits

Change the runner label in your workflow and keep the rest of your GitHub Actions setup. Runner time is billed per minute.

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