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模块命令行说明：

  1. gs_dbmind component slow_query_diagnosis --help
  1. usage:  [-h] -c DIRECTORY [--query SLOW_QUERY]
  2.         [--start-time TIMESTAMP_IN_MICROSECONDS]
  3.         [--end-time TIMESTAMP_IN_MICROSECONDS] [--retention-days DAYS]
  4.         {show,clean}
  6. Slow Query Diagnosis: Analyse the root cause of slow query
  8. positional arguments:
  9.   {show,clean}          choose a functionality to perform
  11. optional arguments:
  12.   -h, --help            show this help message and exit
  13.   -c DIRECTORY, --conf DIRECTORY
  14.                         set the directory of configuration files
  15.   --query SLOW_QUERY    set a slow query you want to retrieve
  16.   --start-time TIMESTAMP_IN_MICROSECONDS
  17.                         set the start time of a slow SQL diagnosis result to
  18.                         be retrieved
  19.   --end-time TIMESTAMP_IN_MICROSECONDS
  20.                         set the end time of a slow SQL diagnosis result to be
  21.                         retrieved
  22.   --retention-days DAYS
  23.                         clear historical diagnosis results and set the maximum
  24.                         number of days to retain data