cxlRay opened a new issue #9668: First response time of timeseries
URL: https://github.com/apache/druid/issues/9668
 
 
   Response time of timeseries in apache-druid-16.1 is longer than druid-12.0
   
   ### Affected Version
   apache-druid-16.1
   druid-12.0
   The Druid version where the problem was encountered.
   apache-druid-16.1
   ### Description
   
   **druid-12.0**
   
![DeepinScreenshot_select-area_20200410181209](https://user-images.githubusercontent.com/11257788/78983580-10a76b00-7b57-11ea-8367-9838aaa1428e.png)
   about cluster
   coordinator and overlord: **1** physical machine
   historical: **4** physical machine
   middlemanager: **4** physical machine
   borker: **2** physical machine
   
   
   **apache-druid-16.1**
   
![DeepinScreenshot_select-area_20200410181142](https://user-images.githubusercontent.com/11257788/78983590-1735e280-7b57-11ea-8fcb-b85a35bee776.png)
   
   about cluster
   coordinator and overlord: **1** physical machine
   historical: **4** physical machine
   middlemanager: **4** physical machine
   borker: **3** physical machine
   
   **the data size of segment is about 20 MB**
   **the machine for  apache-druid-16.1 is better than druid-12.0**
   
   I have checked the config of cluster, there is no big difference

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