Re: [BUG] Strange 1-second pauses during Resume-from-RAM

[Mark Lord]

Ingo Molnar wrote:
> * Ingo Molnar <mingo@xxxxxxx> wrote:
>
> > > Is there a version of these that works with 2.6.23.1 ?
> > yes, i've backported it and have uploaded the v2.6.23 version to:
> >
> >   http://redhat.com/~mingo/latency-tracing-patches/latency-tracer-v2.6.23.1-combo.patch
..

> ok, i experimented around with the latency tracer, trying to capture the 
> trace of a full suspend+resume cycle, and it needed the tracer fix below 
> (GTOD clocksource suspend/resume would otherwise confuse the tracer and 
> you'd get no trace output as a result).
>
> once that tracer bug was fixed, the best method to generate a trace was 
> to do this:
>
>    echo 1 > /proc/sys/kernel/stackframe_tracing
>    echo 1 > /proc/sys/kernel/syscall_tracing
>    ./trace-cmd bash -c "echo mem > /sys/power/state" > trace.txt
..

I've applied the tracer for 2.6.23.1 patch, plus the bugfix,
and now I just get blinking-LEDs (black screen of death) on resume.

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