Re: [patch] Real-Time Preemption, -RT-2.6.9-mm1-V0.5.2

[DaMouse]

On Thu, 28 Oct 2004 15:57:06 +0200, Ingo Molnar <mingo@xxxxxxx> wrote:
> 
> * Ingo Molnar <mingo@xxxxxxx> wrote:
> 
> > (right now it's not possible to do wakeup-timing without
> > LATENCY_TRACE, i'll fix that.)
> 
> i've fixed this in -RT-V0.5.2. Also, the trace_enabled=4 method is
> deprecated now and the new mechanism is to use:
> 
>     /proc/sys/kernel/preempt_wakeup_timing
> 
> this flag is default-enabled. So starting at -RT-V0.5.2 to activate
> wakeup timing it's enough to enable PREEMPT_TIMING and reset the max
> after bootup:
> 
>     echo 0 > /proc/sys/kernel/preempt_max_latency
> 
> this will switch back to critical-section timing/tracing:
> 
>     echo 0 > /proc/sys/kernel/preempt_wakeup_timing

What kind of benchmarking tools about from the inkernel timing/tracing
do you use for testing REALTIME_PREEMPT?

> 
>         Ingo

-DaMouse

-- 
I know I broke SOMETHING but its their fault for not fixing it before me
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