From: Jeff Garzik <jgarzik@pobox.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Andi Kleen <ak@suse.de>, akpm@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Disable scheduler debugging
Date: Sun, 06 Jun 2004 12:24:11 -0400 [thread overview]
Message-ID: <40C3452B.5010500@pobox.com> (raw)
In-Reply-To: <20040606055336.GA15350@elte.hu>
Ingo Molnar wrote:
> * Andi Kleen <ak@suse.de> wrote:
>
>
>>The domain scheduler spews out a lot of information at boot up, but it
>>looks mostly redundant because it's just a transformation of what is
>>in /proc/cpuinfo anyways. Also it is well tested now. Disable it.
>
>
> i'd rather keep it some more, there are still open issues and if there's
> a boot failure or early crash it makes it easier for us to see the
> actual domain setup. Also, the messages are KERN_DEBUG.
Unfortunately there are just, flat-out, way too many kernel messages at
boot-up. Making them KERN_DEBUG doesn't solve the fact that SMP boxes
often overflow the printk buffer before you boot up to a useful userland
that can record the dmesg.
The IO-APIC code is a _major_ offender in this area, but the CPU code is
right up there as well.
Jeff
next prev parent reply other threads:[~2004-06-06 16:24 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-06-06 1:32 [PATCH] Disable scheduler debugging Andi Kleen
2004-06-06 5:53 ` Ingo Molnar
2004-06-06 16:24 ` Jeff Garzik [this message]
2004-06-06 21:46 ` Zwane Mwaikambo
2004-06-06 21:55 ` Jeff Garzik
2004-06-06 21:55 ` Randy.Dunlap
2004-06-06 22:57 ` David Lang
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