2007-Aug-29
[UPDATE Oct 2010] There seems to be an easier solution than the one mentioned below: By using the "/usepmtimer" boot.ini flag (simply add this line to boot.ini) you can change the time source for QueryPerformanceCounter from TSC to the PM timer which is a global time source. Note: This information was taken from
here and
http://wiki.ljackson.us/Negative_Ping_Time#BOOT.ini_Solution, but we did not test it ourselves on AMD CPUs).
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In recent weeks we have received reports about negative PING time measurements (e.g. -5 ms) from users of our monitoring products. "Great", we thought, "our software has overcome the laws the physics and is able to received network packets before they are actually sent". But now there are more and more
hints showing up around the Internet that we will not receive the Nobel price in physics...
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