Re: [PATCH] Fix find busiest queue 2.6.0-test9

[Ingo Molnar <mingo@elte.hu>]

On Sun, 9 Nov 2003, Davide Libenzi wrote:

> Maybe something like:
> 
>  * We fend off statistical fluctuations in runqueue lengths by
>  * saving the runqueue length (as seen by the balancing CPU) during the 
>  * previous load-balancing operation and using the smaller one the current 
>  * and saved lengths.

yep, agreed - patch for 2.6.1 attached. (I also fixed a typo in the
original comment and reformatted the lines) Anything else?

	Ingo

--- kernel/sched.c.orig
+++ kernel/sched.c
@@ -1061,10 +1061,11 @@
 	 * the lock held.
 	 *
 	 * We fend off statistical fluctuations in runqueue lengths by
-	 * saving the runqueue length during the previous load-balancing
-	 * operation and using the smaller one the current and saved lengths.
-	 * If a runqueue is long enough for a longer amount of time then
-	 * we recognize it and pull tasks from it.
+	 * saving the runqueue length (as seen by the balancing CPU) during
+	 * the previous load-balancing operation and using the smaller one
+	 * of the current and saved lengths. If a runqueue is long enough
+	 * for a longer amount of time then we recognize it and pull tasks
+	 * from it.
 	 *
 	 * The 'current runqueue length' is a statistical maximum variable,
 	 * for that one we take the longer one - to avoid fluctuations in