A question for agent-sample

[dafang]

hi dev team:
I have a question for help.
I had set "agent.sample_n_per_3_secs=${SW_AGENT_SAMPLE: 300}", but I got cpm 
50000 in sw-web on this service-agent.In my submission,the maximum CPM should 
be 6000,but why is more than 50000.