---
title: "Get container stats based on resource usage"
method: GET
path: "/containers/{id}/stats"
tags: ["Container"]
---

# Get container stats based on resource usage

`GET /containers/{id}/stats`

This endpoint returns a live stream of a container’s resource usage
statistics.

The `precpu_stats` is the CPU statistic of the *previous* read, and is
used to calculate the CPU usage percentage. It is not an exact copy
of the `cpu_stats` field.

If either `precpu_stats.online_cpus` or `cpu_stats.online_cpus` is
nil then for compatibility with older daemons the length of the
corresponding `cpu_usage.percpu_usage` array should be used.

On a cgroup v2 host, the following fields are not set
* `blkio_stats`: all fields other than `io_service_bytes_recursive`
* `cpu_stats`: `cpu_usage.percpu_usage`
* `memory_stats`: `max_usage` and `failcnt`
Also, `memory_stats.stats` fields are incompatible with cgroup v1.

To calculate the values shown by the `stats` command of the docker cli tool
the following formulas can be used:
* used_memory = `memory_stats.usage - memory_stats.stats.cache`
* available_memory = `memory_stats.limit`
* Memory usage % = `(used_memory / available_memory) * 100.0`
* cpu_delta = `cpu_stats.cpu_usage.total_usage - precpu_stats.cpu_usage.total_usage`
* system_cpu_delta = `cpu_stats.system_cpu_usage - precpu_stats.system_cpu_usage`
* number_cpus = `lenght(cpu_stats.cpu_usage.percpu_usage)` or `cpu_stats.online_cpus`
* CPU usage % = `(cpu_delta / system_cpu_delta) * number_cpus * 100.0`

## Path parameters

- `id` string, required

## Query parameters

- `stream` boolean
- `one-shot` boolean

## Response `200`

no error

- object

## Other responses

- `404` — no such container
- `500` — server error

---

[API](https://skmtc.net/balena-os/apis/docker-engine-api.md) · [All operations](https://skmtc.net/balena-os/apis/docker-engine-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/balena-os/docker-engine-api/versions/e20cfc2fb3f1/schema)