I have a API which has to be load tested.

I am planning to achieve 10RPS by utilising parallel scenarios and please refer the k6 options

```
export let options = {
setupTimeout: '15m0s',
teardownTimeout: '15m0s',
thresholds: {
http_req_failed: ['rate=0.00'],
http_req_duration: ['p(99) < 2000'],
},
scenarios:{
scenario1: {
"executor": "constant-arrival-rate",
"rate": 2,
"duration": "1m0s",
"preAllocatedVUs": 2,
"maxVUs": 20,
"exec": "functionone"
},
scenario2: {
"executor": "constant-arrival-rate",
"rate": 3,
"duration": "1m0s",
"preAllocatedVUs": 2,
"maxVUs": 20,
"exec": "functionOne"
},
scenario3: {
"executor": "constant-arrival-rate",
"rate": 5,
"duration": "1m0s",
"preAllocatedVUs": 2,
"maxVUs": 20,
"exec": "functionTwo"
}
},
summaryTrendStats: ['avg', 'min', 'med', 'max', 'p(95)', 'p(99)', 'count'],
}
```

When looking into above options i am running 3 scenarios parallels with different rate values. So when running parallel it should be 10RPS in iterations and in the HTTP_REQS but its only 5 RPS.

```
http_req_sending...............: avg=68.72µs min=19µs med=65µs max=491µs p(95)=127.44µs p(99)=161.45µs count=752
http_req_tls_handshaking.......: avg=5.3ms min=0s med=0s max=619.22ms p(95)=0s p(99)=181.54ms count=752
http_req_waiting...............: avg=417.42ms min=283.03ms med=321.08ms max=13.37s p(95)=546.76ms p(99)=1.67s count=752
http_reqs......................: 752 5.800814/s
iteration_duration.............: avg=445.56ms min=297.58ms med=322.11ms max=46.36s p(95)=510.52ms p(99)=969.75ms count=722
iterations.....................: 720 5.553971/s
vus............................: 0 min=0 max=13
vus_max........................: 13 min=12 max=13
```

What i am doing incorrectly. Am i missing any configurations ?? PLease help me to achieve 10 RPS with the help of multi parallel scenarios.

Much appreciated