Re: [patch] Real-Time Preemption, -RT-2.6.12-rc6-V0.7.48-00

[Gene Heskett]

On Monday 27 June 2005 04:17, Ingo Molnar wrote:
>* Gene Heskett <gene.heskett@xxxxxxxxxxx> wrote:
>> In the FWIW category, I booted 50-23 about an hour & a half ago,
>> same mode 3, no hardirq's, everything seems to be working fine
>> except for kmails total lack of threading causeing composer hangs
>> while a mail fetch/spamassassin run is in progress.  But thats not
>> anything new to this patchset, its an equal opportunity annoyer.
>
>does the patch below make the kmail starvation go away?
>
I put in the comment and its building now.  I rather doubt its going 
to make a huge diff though as its probably the single most repeated 
bitch on the kmail lists, and has been for a long, very long as in 
years, time.  From hints dropped here and there, it might finally be 
fixed with kde-3.5.  But we'll give this a shot nontheless.  I'll add 
more after I reboot to test.

Now rebooted.

I don't think its made a noticable difference, I'm still getting the 
hangs of up to 30 seconds but I'll let it run the rest of the 
afternoon so I get a better feel for it.  It doesn't often miss a 
keystroke, they will eventually be echoed back to the screen.

> Ingo
>
>Index: kernel/sched.c
>===================================================================
>--- kernel/sched.c.orig
>+++ kernel/sched.c
>@@ -1055,7 +1055,7 @@ static int try_to_wake_up(task_t * p, un
>  /*
>   * sync wakeups can increase wakeup latencies:
> 	 */
>-	if (rt_task(p))
>+//	if (rt_task(p))
> 		sync = 0;
> #endif
> 	rq = task_rq_lock(p, &flags);

-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
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