[ros-dev] Timers and Scheduler - "What I learned on my fall vacation"

[Steven Edwards]

Hello,
I know we already have a few tests like this in the ReactOS tree but I
have not had time to look at all of them or dig in to this at all.

I am forwarding part of a message from Jeremy White along with some
tests of timers and schedualing in case anyone wants to compare Windows
and ReactOS. We ran in to quite a few issues under CrossOver with
Office applications and were able to work around them. Even
applications such as Internet Explorer are affected. See recent hacky
patches on wine-devel for winmm timer resolution. Anyway here is a bit
of his notes and the collection of tests if anyone is interested.

Thanks
Steven

".....Spinning threads get all the cpu they can chew; being in a
foreground Window gives a pretty high bias, but otherwise things seem
to be evenly spread.   Aric did a test program which showed how
SetThreadPriority biases things; it tends to be that only priorities -2
through 2,and 15, have any meaning.  Further, if threads yield, then
only thetop priority threads get any time.  If all threads 'work', then
there is a stair step effect where high priority threads get 'more',
but don't necessarily get it all."



		
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