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Date: Sun, 28 Jan 2007 10:15:14 +0100 From: Ingo Molnar <mingo@...e.hu> To: Sunil Naidu <akula2.shark@...il.com> Cc: Linux kernel mailing list <linux-kernel@...r.kernel.org> Subject: Re: 2.6.20-rc6-rt2 - SMP/x86 -- questions about .config selection * Sunil Naidu <akula2.shark@...il.com> wrote: > There is some confusion for me while configuring a rt kernel & > proceeding for experiments. I did choose the following:- > > NO_HZ=y > HIGH_RES_TIMERS=y > SMP=y > PREEMPT_VOLUNTARY=y > PREEMPT_SOFTIRQS=y > PREEMPT_HARDIRQS=y > SPINLOCK_BKL=y > CLASSIC_RCU=y > SCHED_SMT=y > IRQBALANCE=y > HZ_1000=y > > > #1 Is this correct to say PREEMPT_VOLUNTARY=y for rt on this desktop > #PC? well, PREEMPT_RT is the best preemption method. > #2 I am not clear about IRQ config selection (which one should be > enable/disable for a PC, I did select all as shown in the above > config). Any suggestion? it's OK. If you select PREEMPT_RT then all the necessary preemption options get auto-selected for you. > #3 Any other parameter(s) I need to enable/disable to get better > results? (did disable APM) check out the configs of the -rt yum repository, those are pretty optimal: http://people.redhat.com/mingo/realtime-preempt/yum/ Ingo - 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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