Re: [Xen-devel] Time goes backwards in dom0 in xen-unstable

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 14/04/2009 20:36, "Dan Magenheimer" <dan.magenheimer@xxxxxxxxxx> wrote:

> I'm seeing some "Time went backwards" errors reported
> in dom0 in near-tip (c/s 19515) xen-unstable build.
> It's rare and random and not reproducible, but here's
> the report that just showed up.  There was no load
> running at the time.
> 
> I can move to 3.4-rc1 if that would be helpful but I
> don't remember seeing any time-related changes recently.
> 
> This was on my dual-core test machine which reports
> lots of power management info during Xen boot.

If you specify 'cpuidle=off' as a Xen boot parameter, does that make the
timer_interrupt scalability problem go away, and this time backwards
problem? I was going to enable by default in 3.4 but could go the other way.

 -- Keir



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