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GetTickCount on dual core machines
I'm using the Win32 API call GetTickCount for various high speed uses in C++
and Delphi native code. We've noticed that on some systems, this is very accurate (as you'd expect) but on other systems it can lose as much as 30-60 minutes a day. We're using a combination of machines, Pentium 4 2.8GHz and Intel i3 dual core (2.40 GHz) but no clear indication which machines are better and which are worse. My question is: * What causes a computer to lose time over a day? * Will installing extra hardware (such as a PCI USB expansion card) affect this? * On a dual core processor, does each core have a separate TickCount or is there one TickCount for the machine? Thanks, Alain |
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