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From: "Joakim Tjernlund" <joakim.tjernlund@lumentis.se>
To: "'Jarkko Lavinen \(NMP/Helsinki\)'" <jarkko.lavinen@nokia.com>,
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Date: Tue, 13 Jan 2004 14:19:11 +0100
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In-Reply-To: <20040113125031.GA5146@angel.research.nokia.com>
Subject: RE: JFFS2 mount time
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> I am working with an embedded device with 64MB nand chip. I am able to
> read from chip at 6MB/s and able to read the whole chip in 10 seconds
> using character mtd device. The device has Omap1610 running at 190MHz,
> kernel 2.4.21.
> 
> With 80% file system usage the mount time is 8 seconds which is
> unacceptable for root file system on a handheld device. I assume the
> scan time is linear with respect to the size of the flash partition
> and the file system usage.
> 
> Is there anything that could be done to reduce the mount time of large
> JFFS2 partitions?  Lazy mounting with prioritized scanning?

Yes, it is already done in JFFS2 CVS. Mount time for me is about a second on
a 64MB JFFS2 NOR flash.

      Jocke