Re: [RFC][PATCH 0/3] sched: skip_clock_update madness

Mike Galbraith
2015-01-05T12:07:14Z

On Mon, 2015-01-05 at 12:50 +0100, Peter Zijlstra wrote:
> On Mon, Jan 05, 2015 at 11:49:09AM +0100, Mike Galbraith wrote:
> > On Mon, 2015-01-05 at 11:18 +0100, Peter Zijlstra wrote:
> > > Hi,
> > >
> > > So the big lockup thread got me looking at the skip_clock_update stuff again
> > > and here's what I came up with.
> > >
> > > It seems to build a kernel without generating lockdep splats.
> > >
> > > Mike can you see if it cures the wobblies you were seeing?
> >
> > Nope, those hiccups were production IO beasts from hell staying in the
> > kernel for ages at a time. Watchdog being falsely credited with what is
> > usually dinky wakeup -> switch delta throttled it effectively forever.
>
> OK, It's Monday and I'm still trying to bootstrap my post xmas brain. Is
> that: Nope - can't check, or: Nope - doesn't fix wobblies ?

That's: nope, the boxen that wobbled to death are not at my disposal.

-Mike