Re: [RFC] Introduce greedy hrtimer walk on idle

[Venki Pallipadi]

On Fri, Sep 23, 2011 at 1:03 PM, Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
> On Fri, 2011-09-23 at 11:54 -0700, Venkatesh Pallipadi wrote:
>> Comments?
>
> Looks to be a possible IRQ latency issue as well, that can be a lot of
> timers to run..
>

We could add some rate limit on how many timers we service this way
and/or interrupt/disable-enable in the inner loop.
But, this would be a problem with current hrtimer as well. When
sched_tick timer is not around, we may end up servicing lot of timers
depending on number of them and slack. No?
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/