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Date: Thu, 02 Jul 2015 04:50:45 +0200 From: Mike Galbraith <umgwanakikbuti@...il.com> To: paulmck@...ux.vnet.ibm.com Cc: josh@...htriplett.org, Peter Zijlstra <peterz@...radead.org>, linux-kernel@...r.kernel.org, mingo@...nel.org, laijs@...fujitsu.com, dipankar@...ibm.com, akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com, tglx@...utronix.de, rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com, dvhart@...ux.intel.com, fweisbec@...il.com, oleg@...hat.com, bobby.prani@...il.com Subject: Re: [PATCH RFC tip/core/rcu 0/5] Expedited grace periods encouraging normal ones On Wed, 2015-07-01 at 19:18 -0700, Paul E. McKenney wrote: > Does their normal workload trigger the condition that results in the > expedited grace period? If so, do they use NO_HZ_FULL? They're having no trouble that I'm aware of, and I definitely would be made aware. They're not currently using a kernel with NO_HZ_FULL even built in, as that stuff is far far too raw in the current kernel. They may meet a NO_HZ_FULL enabled kernel soonish, but will be told to not turn it on for anything other than pure compute, as NO_HZ_FULL is currently not usable for mixed load in partitioned box, much less rt. -Mike -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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