Re: [PATCH] clockevents: Per cpu tick skew boot option

From: Mike Galbraith
Date: Mon May 07 2012 - 23:20:20 EST


On Mon, 2012-05-07 at 21:17 +0200, Thomas Gleixner wrote:
> On Sun, 6 May 2012, Mike Galbraith wrote:
> >
> > + skew_tick= [KNL] Offset the periodic timer tick per cpu to mitigate
> > + xtime_lock contention on larger systems. Note: increases
> > + power consumption, and should only be enabled if running
> > + jitter sensitive (HPC/RT) workloads.
> > +
>
> The "=" is wrong as skew_tick should not take parameters. It's
> disabled by default. So "skew_tick" simply enables it, right ?

Unless as I have RT set up, it's turned on by default, so '=' lets the
user turn it back off.

-Mike

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