[PATCH] Fix boot-time slowdown for measure_migration_cost
This reduces the amount of time the migration cost calculations cost
during bootup. Based on numbers by Tony Luck <tony.luck@intel.com>.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/kernel/sched.c b/kernel/sched.c
index 3ee2ae4..ec7fd9c 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -5141,7 +5141,7 @@
#define SEARCH_SCOPE 2
#define MIN_CACHE_SIZE (64*1024U)
#define DEFAULT_CACHE_SIZE (5*1024*1024U)
-#define ITERATIONS 2
+#define ITERATIONS 1
#define SIZE_THRESH 130
#define COST_THRESH 130
@@ -5480,9 +5480,9 @@
break;
}
/*
- * Increase the cachesize in 5% steps:
+ * Increase the cachesize in 10% steps:
*/
- size = size * 20 / 19;
+ size = size * 10 / 9;
}
if (migration_debug)
