Re: Status Update : Deployment of DOSEMU Application Server

[Claudia Neumann <dr.claudia.neumann@gmx.de>]

Hi Manfred!

I tried your patches, but they didn't work out as they should on 1.3.4 and 
1.4.0. 

I had the same problem with some other program on Linux kernel 2.6.24. They 
changed kernel idle time handling somewhere between 2.6.18 and 2.6.24. Now in 
some programs, and dosemu is one of them, the CPU load runs high to over 90% 
on current Linux kernels. 

Perhaps someone knows where to change that in the source code.

Regards

Claudia

Am Donnerstag Oktober 30 2008 18:14 schrieben Sie:
> For the 100% CPU-load problem caused by clipper programs and other dos
> programs, I use two small patches in dosemu 1.3.4:
>
> --- ./base/bios/int16.c.ORIG    2006-10-31 21:28:54.000000000 +0100
> +++ ./base/bios/int16.c 2006-12-31 13:37:10.000000000 +0100
> @@ -118,7 +118,11 @@
>        trigger_idle();
>      else
>        reset_idle(0);
> -    idle(500, 20, 0, INT2F_IDLE_USECS, "int16");
> +    /* 2006-12-13
> +     * dbase3+, word4.0, .... CPU-load is to heavy during idle. --ms
> +     * idle(500, 20, 0, INT2F_IDLE_USECS, "int16");
> +     */
> +    idle(10, 20, 0, INT2F_IDLE_USECS, "int16");
>    } else {
>      reset_idle(1);
>    }
>
> --- ./base/async/int.c.ORIG     2006-11-12 02:20:26.000000000 +0100
> +++ ./base/async/int.c  2007-01-22 15:12:30.000000000 +0100
> @@ -1232,7 +1232,13 @@
>  #endif
>
>    case 0x2C: {                   /* get time & date */
> -      idle(2, 100, 0, INT2F_IDLE_USECS, "dos_time");
> +      /*
> +       * 2004/08/20, 2006/11/25
> +       * waiting loops, like 'wait until time ...' call never a
> trigger_idle() +       * but 90% cpu load. --ms
> +       * idle(2, 100, 0, INT2F_IDLE_USECS, "dos_time");
> +       */
> +      idle(0, 20, 0, INT2F_IDLE_USECS, "dos_time");
>        return 0;
>      }
>
> maybe this can solve your 100% CPU-load too.
>
> Manfred
>
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