[PATCH] O13.1int

[PATCH] O13.1int

[Con Kolivas]

A heck of a lot fairer on disk only tasks; lets them earn sleep avg up to just 
interactive state so they stay on the active array.

Con

--- linux-2.6.0-test2-mm4-O13/kernel/sched.c	2003-08-05 10:08:15.000000000 +1000
+++ linux-2.6.0-test2-mm4-O13.1/kernel/sched.c	2003-08-05 09:58:55.000000000 +1000
@@ -584,13 +584,16 @@ repeat_lock_task:
 				goto repeat_lock_task;
 			}
 			if (old_state == TASK_UNINTERRUPTIBLE){
+				rq->nr_uninterruptible--;
 				/*
 				 * Tasks on involuntary sleep don't earn
-				 * sleep_avg
+				 * sleep_avg beyond just interactive state.
 				 */
-				rq->nr_uninterruptible--;
-				p->timestamp = sched_clock();
-				p->activated = -1;
+				if (NS_TO_JIFFIES(p->sleep_avg) >=
+					JUST_INTERACTIVE_SLEEP(p)){
+						p->timestamp = sched_clock();
+						p->activated = -1;
+				}
 			}
 			if (sync)
 				__activate_task(p, rq);

Re: [PATCH] O13.1int

[Felipe Alfaro Solana]

On Tue, 2003-08-05 at 02:17, Con Kolivas wrote:
> A heck of a lot fairer on disk only tasks; lets them earn sleep avg up to just 
> interactive state so they stay on the active array.

This one is more "jumpy" (i.e., not as smooth as) than just the previous
release. I have had to renice X back to -20 in order to get smooth
window movements involving heavyweight CPU programs like Evolution.

Also, with X at -20, XMMS skips are still present, but they are a little
bit shorter than with previous iterations.