anchor.diff:      type .output
       echo.
       del .output
  +    pause
       exit errorlevel
   )
   del .output
   
   echo low load (1k requests in 2s)
  -start /b cmd /c "node ../benchmark/index %1 2000 200 && echo 'done' >> 1.benchmark-lock"
  -start /b cmd /c "node ../benchmark/index %1 2000 200 && echo 'done' >> 2.benchmark-lock"
  -start /b cmd /c "node ../benchmark/index %1 2000 200 && echo 'done' >> 3.benchmark-lock"
  -start /b cmd /c "node ../benchmark/index %1 2000 200 && echo 'done' >> 4.benchmark-lock"
  -start /b cmd /c "node ../benchmark/index %1 2000 200 && echo 'done' >> 5.benchmark-lock"
  +start /b cmd /c "node ../benchmark/index %1 2000 200 && type nul > 1.benchmark-lock"
  +start /b cmd /c "node ../benchmark/index %1 2000 200 && type nul > 2.benchmark-lock"
  +start /b cmd /c "node ../benchmark/index %1 2000 200 && type nul > 3.benchmark-lock"
  +start /b cmd /c "node ../benchmark/index %1 2000 200 && type nul > 4.benchmark-lock"
  +start /b cmd /c "node ../benchmark/index %1 2000 200 && type nul > 5.benchmark-lock"
   :loop1
   set cnt=0
   for %%A in (*.benchmark-lock) do set /a cnt+=1
  
positive.code: 
  
  echo normal load (10k requests in 2s)
  start /b cmd /c "node ../benchmark/index %1 2000 2000 && echo 'done' >> 1.benchmark-lock"
  start /b cmd /c "node ../benchmark/index %1 2000 2000 && echo 'done' >> 2.benchmark-lock"
  start /b cmd /c "node ../benchmark/index %1 2000 2000 && echo 'done' >> 3.benchmark-lock"
  start /b cmd /c "node ../benchmark/index %1 2000 2000 && echo 'done' >> 4.benchmark-lock"
  start /b cmd /c "node ../benchmark/index %1 2000 2000 && echo 'done' >> 5.benchmark-lock"
  :loop2
  set cnt=0
  for %%A in (*.benchmark-lock) do set /a cnt+=1
  
negative.code: 
  
  echo high load (20k requests in 2s)
  start /b cmd /c "node ../benchmark/index %1 2000 4000 && type nul > 1.benchmark-lock"
  start /b cmd /c "node ../benchmark/index %1 2000 4000 && type nul > 2.benchmark-lock"
  start /b cmd /c "node ../benchmark/index %1 2000 4000 && type nul > 3.benchmark-lock"
  start /b cmd /c "node ../benchmark/index %1 2000 4000 && type nul > 4.benchmark-lock"
  start /b cmd /c "node ../benchmark/index %1 2000 4000 && type nul > 5.benchmark-lock"
  :loop3
  set cnt=0
  for %%A in (*.benchmark-lock) do set /a cnt+=1
  