The progress of execution changed from high to low in the search operation

[rui_dong]

I'm going to test the search performance of an index

  "schedule": [
{
  "operation": {
"name":"N clients randomly query 10,000 data",
"operation-type": "search",
    "param-source": "randomly-query"
  },
  "warmup-iterations": 20,
  "iterations": 500,
  "target-throughput": 200,
  "clients":40
}
]

The execution progress becomes lower In the search operation, like this:
50% done -> 47% done -> 52% done ...

Finally, rally terminates with the following error

 73% done]
 [ERROR] Cannot race. Load generator [%d] has exited prematurely.

[dliappis (Dimitrios Liappis)]

Is this related to The number of clients in search operation? If yes, would you consider closing this, so that we can focus on the other ticket? Thanks.