Re: Dosemu and clipper applications eating all CPU

[Maurilio Longo <maurilio.longo@libero.it>]

Hi,

clipper runtimes calls int 0x21 sub-function 0x2C, I intercept this one and
issue a usleep().

I had to change INT2F_IDLE_SEC to INT28_IDLE_SEC and call usleep() only every
50 times this function gets called or else I had a sluggish dos application. (I
set hog_threshold to 0)

regards.



Maurilio Longo ha scritto:

> Stas,
>
> clipper calls time-of-day interrupt when idle, don't have right number
> of interrupt call here at home, but I did write some years ago a little
> TSR to release cpu under OS/2 and I'm using a home-made dosemu 1.0.x at
> work with a changed handling of this interrupt call inside dosemu code,
> tomorrow I'll tell you the right call.
>
> regards.
>
> Stas Sergeev wrote:
>
> >
> > Hello.
> >
> > Maximiliano Curia wrote:
> >
> >>> Problem of clipper I presume? If it
> >>> just runs in a busy loop while idle,
> >>> dosemu can't really help.
> >>
> >>  Yes, that dosemu doesn't detect the clipper idle calls.
> >
> > But *what kind* of idle calls?
> > This is the vital info. If you
> > can't find the answer, then the
> > problem can't be fixed:)
> > int 0x28 is the real idle call,
> > but since dosemu catches that,
> > I suspect clipper does something
> > else.
> >
> >> It still eats the cpu, with nice -n 19, but now the 60% is marked as
> >> nice.
> >
> > Yes, and the system must not be
> > crawled now at least. At least in
> > a theory:)
> >
> >> I'm trying to understand the freedos idle.
> >
> > That might be not the case either.
> > FreeDOS can just call int16 to do
> > a blocking wait for a keypress, and
> > that will do the trick.
> > You have to find out what exactly
> > the clipper does however.
> > -
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> >
>
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