From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgw-x4.nokia.com ([131.228.20.27]) by pentafluge.infradead.org with esmtp (Exim 4.30 #5 (Red Hat Linux)) id 1AgO8P-00064u-FD for linux-mtd@lists.infradead.org; Tue, 13 Jan 2004 12:59:05 +0000 Received: from esvir04nok.ntc.nokia.com (esvir04nokt.ntc.nokia.com [172.21.143.36])i0DCut227701 for ; Tue, 13 Jan 2004 14:56:55 +0200 (EET) Received: from esebh003.NOE.Nokia.com (unverified) by esvir04nok.ntc.nokia.com for ; Tue, 13 Jan 2004 14:56:55 +0200 Received: from angel.research.nokia.com (localhost.localdomain [127.0.0.1]) i0DCoVRF006372 for ; Tue, 13 Jan 2004 14:50:31 +0200 Received: (from jlavi@localhost) by angel.research.nokia.com (8.12.8/8.12.8/Submit) id i0DCoVrf006370 for linux-mtd@lists.infradead.org; Tue, 13 Jan 2004 14:50:31 +0200 Date: Tue, 13 Jan 2004 14:50:31 +0200 From: "Jarkko Lavinen (NMP/Helsinki)" To: MTD List Message-ID: <20040113125031.GA5146@angel.research.nokia.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline Subject: JFFS2 mount time List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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? Jarkko Lavinen