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Instant load increase
One of the common usages of load testing tools it’s the so-called stepped arrival rate.
In k6 we can achieve it with the following configuration.
Here’s an example on how to instantly increase the number of iterations and hold them for a period of time.
JavaScript
export const options = {
scenarios: {
contacts: {
executor: 'ramping-arrival-rate',
preAllocatedVUs: 50,
timeUnit: '1s',
startRate: 50,
stages: [
{ target: 200, duration: '30s' }, // linearly go from 50 iters/s to 200 iters/s for 30s
{ target: 500, duration: '0' }, // instantly jump to 500 iters/s
{ target: 500, duration: '10m' }, // continue with 500 iters/s for 10 minutes
],
},
},
};
Here’s an example on how to instantly increase the number of VUs and hold them for a period of time.
JavaScript
export const options = {
scenarios: {
contacts: {
executor: 'ramping-vus',
preAllocatedVUs: 10,
startVUs: 3,
stages: [
{ target: 20, duration: '30s' }, // linearly go from 3 VUs to 200 VUs for 30s
{ target: 100, duration: '0' }, // instantly jump to 100 VUs
{ target: 100, duration: '10m' }, // continue with 100 VUs for 10 minutes
],
},
},
};