# cap_cpu

The script used more CPU time than allowed.

## What happened

A script runs with a limit on the CPU time it may use. When it goes over, the sandbox stops it and answers with this code. `detail` names the cap that tripped (`cpu_ms`), how much the script used and how much was allowed. The caps differ for a chart and for a run, and the code sandbox section of the [Limits](https://oathra.dev//docs/limits) page lists them.

## What to do

Do less work per call: compute over fewer bars, and avoid Python loops over every bar where a built-in indicator or a series operation does the same job.

## Example

```json
{
  "request_id": "7d2b1c44-95a0-4e3b-8a6f-1c0d9e2f5a37",
  "ok": false,
  "error": {
    "code": "cap_cpu",
    "message": "The script used more CPU time than allowed.",
    "detail": {
      "cap": "cpu_ms",
      "used": 2310,
      "allowed": 2000
    }
  }
}
```