Re: 2.6.24-rc8-rt1: Strange latencies on mpc5200 powerpc - RCU issue?

[Wolfgang Grandegger]

Steven Rostedt wrote:
> On Tue, 1 Jul 2008, Wolfgang Grandegger wrote:
> > I continue this thread because it's still not understood why enabling
> > CONFIG_RCU_TRACE is necessary to get reasonable latencies on the
> > MPC5200. It might also explain, why I get much worse latencies with
> > 2.6.25.8-rt7.
>
> Have you tried turning on ftrace?

Hm, is it available for PowerPC? I have not found yet how to enable it.

Wolfgang.
--
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/