We have a data acquisition application, and the user
suspects that Windows 2000 "periodically goes off and does
something else in the background" causing milisecond delays
in catching the results of a monitored (by the data
acquisition program) event. We have disabled anti-virus,
disconnected from network, stopped a bunch of unnecessary ?
services. Is there any way to give a particular application
priority over all other events - i.e. system services. Or,
what are the absolute minimal services that can run without
causing problems with Windows

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> We have a data acquisition application, and the user
> suspects that Windows 2000 "periodically goes off and does
> something else in the background" causing milisecond delays
> in catching the results of a monitored (by the data
> acquisition program) event. We have disabled anti-virus,
> disconnected from network, stopped a bunch of unnecessary ?
> services. Is there any way to give a particular application
> priority over all other events - i.e. system services. Or,
> what are the absolute minimal services that can run without
> causing problems with Windows

What are you trying to capture?
E.g serial port monitors need special setup to catch "every"
event.