Linus, this change some default value after having observed values
distribution. dyn_prio changed to unsigned and increased mm affinity
bonus.
- Davide
diff -Nru linux-2.5.2-pre3.vanilla/include/linux/sched.h linux-2.5.2-pre3.psch/include/linux/sched.h
--- linux-2.5.2-pre3.vanilla/include/linux/sched.h Thu Dec 27 20:11:25 2001
+++ linux-2.5.2-pre3.psch/include/linux/sched.h Fri Dec 28 10:37:17 2001
@@ -302,7 +302,7 @@
* all fields in a single cacheline that are needed for
* the goodness() loop in schedule().
*/
- long dyn_prio;
+ unsigned long dyn_prio;
long nice;
unsigned long policy;
struct mm_struct *mm;
@@ -452,7 +452,7 @@
*/
#define _STK_LIM (8*1024*1024)
-#define MAX_DYNPRIO 100
+#define MAX_DYNPRIO 40
#define DEF_TSLICE (6 * HZ / 100)
#define MAX_TSLICE (20 * HZ / 100)
#define DEF_NICE (0)
diff -Nru linux-2.5.2-pre3.vanilla/kernel/sched.c linux-2.5.2-pre3.psch/kernel/sched.c
--- linux-2.5.2-pre3.vanilla/kernel/sched.c Thu Dec 27 20:11:25 2001
+++ linux-2.5.2-pre3.psch/kernel/sched.c Fri Dec 28 09:29:36 2001
@@ -70,6 +70,7 @@
#define NICE_TO_TICKS(nice) (TICK_SCALE(20-(nice))+1)
+#define MM_AFFINITY_BONUS 4
/*
* Init task must be ok at boot for the ix86 as we will check its signals
@@ -181,7 +182,7 @@
/* .. and a slight advantage to the current MM */
if (p->mm == this_mm || !p->mm)
- weight += 1;
+ weight += MM_AFFINITY_BONUS;
weight += 20 - p->nice;
goto out;
}
@@ -533,7 +534,7 @@
p->need_resched = 1;
else {
if (!--p->time_slice) {
- if (p->dyn_prio > 0) {
+ if (p->dyn_prio) {
--p->time_slice;
--p->dyn_prio;
}
-
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This archive was generated by hypermail 2b29 : Mon Dec 31 2001 - 21:00:18 EST