---
title: Pool
order: 11
description: "The concurrency pool: the shared set of slots that caps how many targets run in parallel on one machine. Its capacity defaults to MAGUS_CONCURRENCY, then 4 on GitHub-hosted runners, then min(NumCPU, 8); magus status and the dashboard report it live."
tags: [glossary, execution-and-caching]
---

# Pool

The concurrency pool: the shared set of slots that caps how many targets run in
parallel on one machine. Its capacity defaults to `MAGUS_CONCURRENCY`, then 4 on
GitHub-hosted runners, then `min(NumCPU, 8)`; `magus status` and the
[dashboard](../guides/integrations/server.md) report it live.

## Example

```sh
magus status
```

## Used in

<!-- BEGIN GLOSSARY USAGE (generated by glossary-usage-generate from the knowledge graph; edit the generator, not this list) -->

In the docs:

- [How wide the pool is by default](../concepts/concurrency.md#how-wide-the-pool-is-by-default)
- [Concurrency pool](../concepts/telemetry.md#concurrency-pool)
- [Live pool snapshot in a multiplexer sidebar](../guides/tips.md#live-pool-snapshot-in-a-multiplexer-sidebar)
- [Pool](../reference/api/status/v1alpha1/status.md#pool)

In the code (`magus refs <name>` lists every site):

- `gopherbuzz.Pool` (Go)

<!-- END GLOSSARY USAGE -->

## See also

- [The broker and the daemon](../guides/integrations/server.md)
- [Slot](slot.md)
- [Concurrency](concurrency.md)