怎么减少mysqlreport这个报告工具里面的Com_和COM_QUIT??

Question

我用mysqlreport看了现在mysql的状态，其中：__ Questions ___________________________________________________________
Total          11.27M    74.0/s
  DMS           4.45M    29.2/s  %Total:  39.47
  Com_          4.12M    27.1/s           36.55
  COM_QUIT      2.34M    15.4/s           20.76
  QC Hits     276.92k     1.8/s            2.46
  +Unknown     85.61k     0.6/s            0.76
Slow 10 s       9.58k     0.1/s            0.09  %DMS:   0.22  Log:  ON
DMS             4.45M    29.2/s           39.47
  SELECT        4.40M    28.9/s           39.07         98.96
  INSERT       38.64k     0.3/s            0.34          0.87
  UPDATE        4.50k     0.0/s            0.04          0.10
  DELETE        3.03k     0.0/s            0.03          0.07
  REPLACE           0       0/s            0.00          0.00
Com_            4.12M    27.1/s           36.55
  set_option    2.06M    13.5/s           18.27
  change_db     2.06M    13.5/s           18.25
  commit        1.97k     0.0/s            0.02
据文档说，Com_和COM_QUIT 应该是越小越好，可我这里都不知道是怎么产生的，谁知道原因？