Messages in this thread | | | Date | Tue, 14 Jun 2016 12:11:45 +0200 | From | Ingo Molnar <> | Subject | Re: [patch 13/20] timer: Switch to a non cascading wheel |
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* Thomas Gleixner <tglx@linutronix.de> wrote:
> On Mon, 13 Jun 2016, Peter Zijlstra wrote: > > On Mon, Jun 13, 2016 at 08:41:00AM -0000, Thomas Gleixner wrote: > > > + > > > + /* Cascading, sigh... */ > > > > So given that userspace has no influence on timer period; can't we > > simply fail to support timers longer than 30 minutes? > > > > In anything really arming timers _that_ long? > > Unfortunately yes. Networking being one of those. Real cascading happens once > in a blue moon, but it happens.
So I'd really prefer it if we added a few more levels, a hard limit and got rid of the cascading once and for all!
IMHO 'once in a blue moon' code is much worse than a bit more data overhead.
Thanks,
Ingo
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