This is documentation for the next version of K6. For the latest stable release, go to the latest version.
throttleNetwork(networkProfile)
Throttles the network in Chrome/Chromium to slow it down by the specified fields in the networkProfile
object.
Parameter | Type | Default | Description |
---|---|---|---|
networkProfile | NetworkProfile | null | This is a mandatory parameter. |
networkProfile.latency | number | 0 | Minimum latency from request sent to response headers received (ms). |
networkProfile.download | number | -1 | Maximal aggregated download throughput (bytes/sec). -1 disables download throttling. |
networkProfile.upload | number | -1 | Maximal aggregated upload throughput (bytes/sec). -1 disables upload throttling. |
To work with the most commonly tested network profiles, import networkProfiles
from the browser module. There are three profiles available:
Name | Notes |
---|---|
'No Throttling' | No throttling, which is the default before applying any network throttling. This can be used to remove the network throttling. |
'Fast 3G' | Emulates a typical fast 3G connection |
'Slow 3G' | Emulates a typical slow 3G connection |
Returns
Type | Description |
---|---|
Promise<void> | A Promise that fulfills when the network has been throttled to the specified rate. |
Example
import { browser, networkProfiles } from 'k6/browser';
export const options = {
scenarios: {
browser: {
executor: 'shared-iterations',
options: {
browser: {
type: 'chromium',
},
},
},
},
};
export default async function () {
const context = await browser.newContext();
const page = await context.newPage();
try {
await page.throttleNetwork(networkProfiles['Slow 3G']);
await page.goto('https://test.k6.io/', { waitUntil: 'networkidle' });
} finally {
await page.close();
}
}