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echo: os2prog
to: IVAN TODOROSKI
from: Jeff Dunlop
date: 1998-11-16 09:00:56
subject: PM drawing priorities...

IT>   1) changing the task scheduling policy from HIGHER-PRIORITY-GETS-ALL
 IT>      to the more reasonable (in my oppinion) assignment of CPU time
 IT>      PROPORTIONAL to the thread priority.

Ordinarily, I would disagree with this. It's typically the programmer's
responsibility to ensure that blocking activities occur with regularity in
his program if he intends to run it at an elevated priority. However, with
the normal boost of the foreground process to priority 4, it requires OS/2
(but not DOS) programmers who expect their program to run at normal
priority to resort to Windows tricks to release the processor more
frequently than once every second or longer.

 IT>   2) Allowing finer control of the MAXWAIT setting

I agree with this, and would prefer it to 1.

 IT>   3) allowing the user to set the priority of PM drawing operations
 IT>      (within limits of course), or atleast lowering it

I think this may skewed by a quirk with software on your system.

 IT>   4) making the priority of PM drawing the same as the priority of the
 IT>      process requesting it (this is a variation of the previous
 IT>      alternative)

Ditto my comment on 3).


Jeff

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