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Date: Tue, 13 Nov 2012 16:36:42 -0800 From: Josh Triplett <josh@...htriplett.org> To: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> Cc: Tim Sander <tim01@...i.informatik.tu-darmstadt.de>, linux-kernel@...r.kernel.org, linux-rt-users@...r.kernel.org, mingo@...e.hu, laijs@...fujitsu.com, dipankar@...ibm.com, akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com, niv@...ibm.com, tglx@...utronix.de, peterz@...radead.org, rostedt@...dmis.org, Valdis.Kletnieks@...edu, dhowells@...hat.com, edumazet@...gle.com, darren@...art.com, fweisbec@...il.com, sbw@....edu, patches@...aro.org Subject: Re: Does anyone use CONFIG_TINY_PREEMPT_RCU? On Tue, Nov 13, 2012 at 04:06:48PM -0800, Paul E. McKenney wrote: > On Wed, Nov 14, 2012 at 12:32:36AM +0100, Tim Sander wrote: > > Hi Paul > > > > Sorry english somehow i tried to shoehorn more than one sentence into one > > sentence in the last mail. > > > OK, how much memory does your device have? > > It's 128Mb of memory. > > That is a bit on the smaller side. But still quite large compared > to the 15K difference between CONFIG_TREE_PREEMPT_RCU and > CONFIG_TINY_PREEMPT_RCU. I'd also expect CONFIG_TINY_PREEMPT_RCU to have marginally more performance on a UP system, but probably not enough to matter. - Josh Triplett -- 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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