From mboxrd@z Thu Jan  1 00:00:00 1970
From: Manfred Scherer <manfred.scherer.mhm@t-online.de>
Subject: Re: Status Update : Deployment of DOSEMU Application Server
Date: Thu, 30 Oct 2008 18:14:04 +0100
Message-ID: <200810301814.04401.manfred.scherer.mhm@t-online.de>
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To: linux-msdos@vger.kernel.org

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