---
title: "Options | Grafana k6 documentation"
description: "Options allows to configure the tracing instrumentation behavior."
---

# Options

Use the `Options` object to configure the tracing instrumentation behavior. It is used during the instantiation of a [`Client`](/docs/k6/latest/javascript-api/jslib/http-instrumentation-tempo/client/) instance and also as a parameter to the [`instrumentHTTP`](/docs/k6/latest/javascript-api/jslib/http-instrumentation-tempo/instrumenthttp/) function. It controls the general behavior of the tracing instrumentation and is unspecific to any particular tracing client instance.

## Options

Expand table

| Option name  | Type     | Default | Description                                                                                       |
|--------------|----------|---------|---------------------------------------------------------------------------------------------------|
| `propagator` | `string` | `w3c`   | The trace context propagation format. Currently supported: `w3c` and `jaeger`.                    |
| `sampling`   | `number` | `1`     | A number between 0 and 1 defining the sampling rate. 1 means sample always, 0 means never sample. |