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Date: Wed, 21 Jan 2015 09:06:47 +0100 From: Mike Galbraith <umgwanakikbuti@...il.com> To: paulmck@...ux.vnet.ibm.com Cc: Huang Ying <ying.huang@...el.com>, LKML <linux-kernel@...r.kernel.org>, LKP ML <lkp@...org> Subject: Re: [LKP] [rcu] 00f5159aeb6: +55.3% will-it-scale.time.involuntary_context_switches On Tue, 2015-01-20 at 23:52 -0800, Paul E. McKenney wrote: > On Wed, Jan 21, 2015 at 03:32:44PM +0800, Huang Ying wrote: > > FYI, we noticed the below changes on > > > > git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git stall.2015.01.06a > > commit 00f5159aeb68f08ce29597be86be87d6db0c1ba1 ("rcu: Run grace-period kthreads at real-time priority") > > Glad this helps! The way I read it, it's hurting by increasing context switches... but if you'll need a boot param to turn it on in the future, this is moot :) -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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