lkml.org 
[lkml]   [2004]   [Nov]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [Fwd: Re: [patch] Real-Time Preemption, -RT-2.6.9-mm1-V0.4]

* Thomas Gleixner <tglx@linutronix.de> wrote:

> > http://redhat.com/~mingo/realtime-preempt/
> >
> > Thomas, can you confirm that this kernel fixes the irqs-off latencies?
> > (the priority loop indeed was done with irqs turned off.)
>
> The latencies are still there. I have the feeling it's worse than 0.6.2.

what is the worst latency you can trigger with Florian's latest
rtc_wakeup code? (please re-download it, there has been a recent update)

also, there are no "arbitrary load" latency guarantees with
DEADLOCK_DETECTION turned on, since we search the list of all held locks
during task-exit time - this can generate pretty bad latencies e.g.
during hackbench.

Ingo
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 14:07    [W:0.176 / U:0.092 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site