On Mon, 2007-08-06 at 15:07 -0400, Gregory Haskins wrote:
> Hi Ingo,
> I think there is a latent race condition somewhere in the code. We
> find that -rt works on our 4-way (and under) systems, but have problems
> on our 8-ways.
>
> If you run without nmi_watchdog, the system will sometimes boot (but
> very very very slow), and sometimes it will softlockup. If you turn on
> nmi_watchdog, the system detects a hang (probably at the point where the
> system gets really slow without it). We notice no problems on the
> 4-ways.
>
> The system where we can reproduce this is a Dell 690 with Dual 2Ghz
> Quad-core Xeon 5335s. I've attached some relevant info. Let me know if
> you need more.
Could you drop the following config options and test again?
#
# Processor type and features
#
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
(btw, added LKML to the CC list ..)
Daniel
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