diff -urNp --exclude CVS --exclude BitKeeper --exclude {arch} --exclude .arch-ids x-ref/include/linux/sched.h x/include/linux/sched.h
--- x-ref/include/linux/sched.h	2003-10-01 04:57:45.000000000 +0200
+++ x/include/linux/sched.h	2003-10-01 04:57:47.000000000 +0200
@@ -622,6 +622,8 @@ extern unsigned int * prof_buffer;
 extern unsigned long prof_len;
 extern unsigned long prof_shift;
 
+extern int max_timeslice, min_timeslice;
+
 #define CURRENT_TIME (xtime.tv_sec)
 
 extern void FASTCALL(__wake_up(wait_queue_head_t *q, unsigned int mode, int nr));
diff -urNp --exclude CVS --exclude BitKeeper --exclude {arch} --exclude .arch-ids x-ref/include/linux/sysctl.h x/include/linux/sysctl.h
--- x-ref/include/linux/sysctl.h	2003-10-01 04:57:45.000000000 +0200
+++ x/include/linux/sysctl.h	2003-10-01 05:00:19.000000000 +0200
@@ -132,6 +132,8 @@ enum
  	KERN_CORE_SETUID=59,	/* int: set to allow core dumps of setuid apps */
 	KERN_SHMBIGPAGESPERFILE=60, /* int: max bigpages per file */
 	KERN_SCHED_YIELD_SCALE=61, /* int: select between scalable or interactive */
+	KERN_MAXTIMESLICE=62,	/* int: nice -20 max timeslice */
+	KERN_MINTIMESLICE=63,	/* int: nice +19 min timeslice */
 };
 
 
diff -urNp --exclude CVS --exclude BitKeeper --exclude {arch} --exclude .arch-ids x-ref/kernel/sched.c x/kernel/sched.c
--- x-ref/kernel/sched.c	2003-10-01 04:57:45.000000000 +0200
+++ x/kernel/sched.c	2003-10-01 04:59:36.000000000 +0200
@@ -52,8 +52,15 @@
  * maximum timeslice is 300 msecs. Timeslices get refilled after
  * they expire.
  */
-#define MIN_TIMESLICE		( 10 * HZ / 1000)
-#define MAX_TIMESLICE		(300 * HZ / 1000)
+#define __MIN_TIMESLICE		 10000
+#define __MAX_TIMESLICE		310000
+#define __MIN_TIMESLICE_DESKTOP	 1000
+#define __MAX_TIMESLICE_DESKTOP	31000
+/* the sysctl values are exported in usec units to userspace */
+int max_timeslice = __MAX_TIMESLICE, min_timeslice = __MIN_TIMESLICE;
+#define MAX_TIMESLICE ((max_timeslice * HZ + 999999) / 1000000)
+#define MIN_TIMESLICE ((min_timeslice * HZ + 999999) / 1000000)
+
 #define CHILD_INHERITANCE	60
 #define PRIO_BONUS_RATIO	25
 #define INTERACTIVE_DELTA	2
diff -urNp --exclude CVS --exclude BitKeeper --exclude {arch} --exclude .arch-ids x-ref/kernel/sysctl.c x/kernel/sysctl.c
--- x-ref/kernel/sysctl.c	2003-10-01 04:57:45.000000000 +0200
+++ x/kernel/sysctl.c	2003-10-01 04:57:47.000000000 +0200
@@ -292,6 +292,10 @@ static ctl_table kern_table[] = {
 #endif	
 	{KERN_SCHED_YIELD_SCALE, "sched_yield_scale",
 	 &sysctl_sched_yield_scale, sizeof(int), 0644, NULL, &proc_dointvec},
+	{KERN_MAXTIMESLICE, "max-timeslice",
+	 &max_timeslice,sizeof(int),0644,NULL,&proc_dointvec},
+	{KERN_MINTIMESLICE, "min-timeslice",
+	 &min_timeslice,sizeof(int),0644,NULL,&proc_dointvec},
 	{0}
 };