Re: [ANNOUNCE] 3.8-rc6-nohz4

[Steven Rostedt]

On Thu, 2013-02-07 at 08:30 -0800, Paul E. McKenney wrote:

> I suspect that removal of jiffies from the kernel will take a few stages,
> with RCU being one of the laggards for awhile.  Making RCU's state
> machine depend wholly on process-based execution will take some care
> and experimentation, especially for extreme and corner-case workloads.
> For example, having RCU OOM the system just because a specific CPU was
> unable to run some RCU kthread for an extended time is something to
> be avoided.  ;-)

Tickless doesn't mean no timeouts or periodic timers. I think we will
always have some sort of dynamic tick when needed. It will just be more
event driven then something that goes off constantly.

-- Steve


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