linux-kernel - Re: Linux mdadm superblock question.

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Message-ID: <20100217185105.GA15614@emergent.ellipticsemi.com>
Date:	Wed, 17 Feb 2010 13:51:05 -0500
From:	Nick Bowler <nbowler@...iptictech.com>
To:	david@...g.hm
Cc:	Volker Armin Hemmann <volkerarmin@...glemail.com>,
	Kyle Moffett <kyle@...fetthome.net>,
	Rudy Zijlstra <rudy@...mpydevil.homelinux.org>,
	Neil Brown <neilb@...e.de>,
	"Mr. James W. Laferriere" <babydr@...y-dragons.com>,
	Bill Davidsen <davidsen@....com>,
	Michael Evans <mjevans1983@...il.com>,
	linux-kernel@...r.kernel.org, linux-raid@...r.kernel.org
Subject: Re: Linux mdadm superblock question.

On 10:41 Wed 17 Feb     , david@...g.hm wrote:
> On Wed, 17 Feb 2010, Nick Bowler wrote:
> > It takes about half a second for mdadm to assemble my root array, is
> > that what you're referring to?
> >
> > I assume that kernel auto-assembly is no faster, although I've never
> > used it.  Regardless, half a second isn't very long to wait.
> 
> If you are aiming for a 5-second boot time it's 10% of your total boot 
> time. That's a lot for a feature that's not needed.

Only if the kernel auto-assembly takes zero time, which it obviously
does not.

-- 
Nick Bowler, Elliptic Technologies (http://www.elliptictech.com/)
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