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High Precision Timing Class And Demo

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Submitted on: 1/28/2002 2:45:59 PM
By: Chris_Lucas  
Level: Intermediate
User Rating: By 2 Users
Compatibility: VB 5.0, VB 6.0, VBA MS Excel
Views: 5217
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     Most people use GetTickCount and TimeGetTime to compare one chunk of code against another. The problem is, these API calls have terrible resolution. This class puts a friendly face on QueryPerformanceCounter and QueryPerformanceFrequency. The download includes both the class itself, and a small demo app which lets you see how miserable the other two calls perform. Please leave your comments and votes.

 
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1/28/2002 2:53:07 PMAlmar Joling

Please note that QueryPerformanceCounter is also the slowest to call. Also, don't start using this for everything..basicly it's the same as measuring the length of someone in Um.
GetTickcount precision (10^3)
QPFC precision (10^6)
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1/29/2002 9:35:14 AMRobert Rayment

Nice demo. GetTickCount not very good but timeGetTime good enough to nearest millisec or 2.
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2/15/2002 12:00:56 PMFireClaw

Impressive idea of using Currency to hold the times (which is a sub-type of decimal which is unavailable directly in VB) :o)

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