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| ## Query History Visualization Tool |
| |
| IoTDB Query History Visualization Tool uses a monitoring web page to provide metrics service for viewing the query history and SQL execution time. It also provides the memory and CPU usage of the current host. |
| |
| The port of IoTDB Query History Visualization Tool is `8181`. Just print your `ip:8181` in your browser, and the page view looks like this: |
| |
| <img style="width:100%; max-width:800px; margin-left:auto; margin-right:auto; display:block;" src="https://user-images.githubusercontent.com/19167280/65688727-3038e380-e09e-11e9-8266-24ff0a1efa96.png"> |
| |
| > Note: Currently, we only support showing CPU ratio of Windows and Linux os. If you are using other OS, you may get a warning information: "Can't get the cpu ratio, because this OS is not supported". |
| |
