excel-vba Excel-VBA Optimization Checking time of execution
Example
Different procedures can give out the same result, but they would use different processing time. In order to check out which one is faster, a code like this can be used:
time1 = Timer
For Each iCell In MyRange
iCell = "text"
Next iCell
time2 = Timer
For i = 1 To 30
MyRange.Cells(i) = "text"
Next i
time3 = Timer
debug.print "Proc1 time: " & cStr(time2-time1)
debug.print "Proc2 time: " & cStr(time3-time2)
Private Declare PtrSafe Function getFrequency Lib "Kernel32" Alias "QueryPerformanceFrequency" (cyFrequency As Currency) As Long
Private Declare PtrSafe Function getTickCount Lib "Kernel32" Alias "QueryPerformanceCounter" (cyTickCount As Currency) As Long
Function MicroTimer() As Double
Dim cyTicks1 As Currency
Static cyFrequency As Currency
MicroTimer = 0
If cyFrequency = 0 Then getFrequency cyFrequency 'Get frequency
getTickCount cyTicks1 'Get ticks
If cyFrequency Then MicroTimer = cyTicks1 / cyFrequency 'Returns Seconds
End Function
