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I am getting strange results from KeStallExecutionProcessor on a Dell
Dimension 8100. The machine is a Pentium 4 1.5Ghz and is Running NT 4.0
SP6.KeStallExecutionProcessor( 10 ) waits for 1.6us and NOT for 10us. The same
code on a different machine produces the expected 10us. Windows 2000 on
the P4 also produces the correct 10us delay!I have measured this using a logic analyzer and also using
KeQueryPerformanceCounter.I tested a few other values and found the following:
KeStallExecutionProcessor( 50 ) 6.7us
KeStallExecutionProcessor( 100 ) 15us
KeStallExecutionProcessor( 1000 ) 154.2us yes I know this sort of
value is not reccommendedHas anyone got any ideas? Have I found a bug… Strange thing is if it is a
bug you would expect the O/S to have problems, is seems to work fine.
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