Re: Dosemu and clipper applications eating all CPU

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

Stas,

it probably depends on the linker used to create the clipper app, here we use
blinker to create a protect mode application, and this application calls
src/base/async/int.c function ms_dos case 0x2C.

In 1.1.3 (which is the dosemu we use) I had to make the changes I told you, and I
use hog_threshold(0) to have the clipper app to give back all the time it doesn't
use.

But, on OS/2 I have the possibility to give back the rest of my cpu time slice,
while in linux it usleep()s a fixed amount of time and this makes the program
sluggish without my changes.

regards.



Stas Sergeev ha scritto:

> Hello.
>
> Maximiliano Curia wrote:
> > Yes, that dosemu doesn't detect the clipper idle calls.
> OK, some nice guy at SF finally
> provided a clipper-based program
> for testing (that's why I like
> the SF tracker) and I was able to
> have a look at what it does myself.
> Indeed it calls int21h/1Ch, although
> so infrequently, that it doesn't
> seem to be usefull here.
> It calls int16h/11h a bit more
> frequently, although also rather
> rarely.
> The attached patch makes it to
> release the CPU a little, although
> perhaps still not enough.
> Also note that clipper will work
> in protected mode only in dosemu
> 1.3.1. On any other versions it
> can work in real mode only, which
> may have a different CPU loads.
>
>   ------------------------------------------------------------------------------
> --- src/base/bios/int16.c       Sat Mar 13 00:40:05 2004
> +++ src/base/bios/int16.c       Sat Mar 13 01:15:29 2004
> @@ -126,7 +126,7 @@
>        trigger1=0;
>      if(trigger1 >= config.hogthreshold*500) {
>        if(oldESP==_ESP) {
> -        if (++trigger >= config.hogthreshold*20) {
> +        if (trigger++ >= (config.hogthreshold - 1) * 20) {
>            usleep(INT2F_IDLE_USECS);
>            trigger=0;
>            keyptr = get_key(extended);
>
>   ------------------------------------------------------------------------------
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