From: Ingo Molnar <mingo@elte.hu>
To: Sunil Naidu <akula2.shark@gmail.com>
Cc: Linux kernel mailing list <linux-kernel@vger.kernel.org>
Subject: Re: 2.6.20-rc6-rt2 - SMP/x86 -- questions about .config selection
Date: Sun, 28 Jan 2007 10:15:14 +0100 [thread overview]
Message-ID: <20070128091514.GA30685@elte.hu> (raw)
In-Reply-To: <8355959a0701272135p150bb95dkf62dbfc07c0cdccc@mail.gmail.com>
* 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/
Ingo
prev parent reply other threads:[~2007-01-28 9:16 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-28 5:35 2.6.20-rc6-rt2 - SMP/x86 -- questions about .config selection Sunil Naidu
2007-01-28 9:15 ` Ingo Molnar [this message]
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