Messages in this thread | | | Date | Sun, 28 Jan 2007 10:15:14 +0100 | From | Ingo Molnar <> | Subject | Re: 2.6.20-rc6-rt2 - SMP/x86 -- questions about .config selection |
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* Sunil Naidu <akula2.shark@gmail.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/
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