---
title: report.autotuner
description: A tuning recommendation from the Autotuner gem.
url: https://docs.honeybadger.io/insights/event-types/ruby/report.autotuner/
---

A tuning recommendation from the Autotuner gem.

Source **Autotuner** Category **Metrics** Fields **5** [honeybadger-ruby](https://docs.honeybadger.io/lib/ruby/)

## Fields

| Field         | Type   | Description                                                                                                               |
| ------------- | ------ | ------------------------------------------------------------------------------------------------------------------------- |
| `event_type`  | string | Allowed value: `report.autotuner`.                                                                                        |
| `report`      | string | Human-readable tuning recommendation text.                                                                                |
| `request_id`  | string | Rails request UUID, present on any event fired during a web request context. Set by the Honeybadger agent when available. |
| `hostname`    | string | Server hostname. Attached to every event by default (events.attach\_hostname).                                            |
| `environment` | string | Application environment, e.g. "production". Attached to every event by default (events.attach\_environment).              |

## Example

```json
{
  "event_type": "report.autotuner",
  "report": "The following suggestions reduce the number of major GC collections during requests.\nSuggested tuning values:\n  RUBY_GC_HEAP_OLDOBJECT_LIMIT_FACTOR=1.2 (default: 2.0)",
  "request_id": "0f5e4bb2-3c46-4b1c-91d5-2f4e8a6b9c01",
  "hostname": "web-1.example.com",
  "environment": "production"
}
```

---

## Try Honeybadger for FREE

Intelligent logging, error tracking, and Just Enough APM™ in one dev-friendly platform. Find and fix problems before users notice.

[Start free trial](https://app.honeybadger.io/users/sign_up)

[See plans and pricing](https://www.honeybadger.io/plans/)