From mboxrd@z Thu Jan 1 00:00:00 1970 From: "H. Peter Anvin" Subject: Re: Linux mdadm superblock question. Date: Wed, 17 Feb 2010 14:26:20 -0800 Message-ID: <4B7C6D0C.6020801@zytor.com> References: <201002140251.59668.volkerarmin@googlemail.com> <201002171927.07051.volkerarmin@googlemail.com> <20100217183703.GA15446@emergent.ellipticsemi.com> <201002171946.09884.volkerarmin@googlemail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <201002171946.09884.volkerarmin@googlemail.com> Sender: linux-raid-owner@vger.kernel.org To: Volker Armin Hemmann Cc: Nick Bowler , david@lang.hm, Kyle Moffett , Rudy Zijlstra , Neil Brown , "Mr. James W. Laferriere" , Bill Davidsen , Michael Evans , linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org List-Id: linux-raid.ids On 02/17/2010 10:46 AM, Volker Armin Hemmann wrote: > > well at the moment it takes less than two seconds until init takes over. > > Adding .5 seconds is a lot. And loading the initrd and changing root isn't > free either, true? > > I remember well all the noise in the past about making linux booting faster. > So why slow it down with an initrd - especially if you can do without? > Note that an extremely lightweight initramfs can quite possibly be faster than doing it in the kernel, just because userspace is so much less constrained. I was hoping klibc would catch on for this stuff, but it hasn't as much as I'd like. -hpa