From: David Woodhouse <dwmw2@infradead.org>
To: Davide CASCONE <davide.cascone@st.com>
Cc: linux-mtd@lists.infradead.org
Subject: Re: Root mounting time
Date: Wed, 07 Jun 2006 13:28:12 +0100 [thread overview]
Message-ID: <1149683292.13596.74.camel@pmac.infradead.org> (raw)
In-Reply-To: <001c01c68a2c$2a67d600$253682a4@nap.st.com>
On Wed, 2006-06-07 at 14:16 +0200, Davide CASCONE wrote:
> I'm working in XIP mode on a OMAP platform using Sibley device in
> burst mode (burst frequency = 48MHz). I see that it's necessary about
> 1 sec to mount JFFS2 on a 1MB root image. Do you feel this is a
> reasonable time? How long does it usually take to mount the JFFS2 on a
> typical root image?
Are you using the current git tree and summary support?
I can mount a 512MiB NAND flash in 5.9s on hardware where I get only
2.7MiB/s transfer speed from the flash. Mounting 1MiB from NOR flash
really shouldn't be that slow.
Profile the current code and show where it takes all the time.
I have plans to halve the size of the summary nodes, which should go
into the git tree this week too.
--
dwmw2
prev parent reply other threads:[~2006-06-07 12:28 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-07 12:16 Root mounting time Davide CASCONE
2006-06-07 12:28 ` David Woodhouse [this message]
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