Re: RFC: futex_wait() can DoS the tick

From: Thomas Gleixner
Date: Thu Jun 11 2015 - 14:52:30 EST


On Thu, 11 Jun 2015, Mike Galbraith wrote:
> On Thu, 2015-06-11 at 15:13 +0200, Thomas Gleixner wrote:
>
> > The kernel does not care whether the actual interrupt happens or the
> > timer is expired by other means.
>
> Final question: Notabug explanation fits.. but why would the behavior
> delta be so radical and repeatable w/wo deadline timer on some boxen?

Good question. Cannot answer that w/o looking at traces.

Thanks,

tglx
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