From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from dell-paw-3.cambridge.redhat.com ([195.224.55.237] helo=passion.cambridge.redhat.com) by pentafluge.infradead.org with esmtp (Exim 3.22 #1 (Red Hat Linux)) id 15f0au-0004sc-00 for ; Thu, 06 Sep 2001 15:57:28 +0100 From: David Woodhouse In-Reply-To: <3B978FD5.D35F06BF@mazet.de> References: <3B978FD5.D35F06BF@mazet.de> To: Holger Friedrich Cc: "'linux-mtd@lists.infradead.org'" Subject: Re: DiskOnChip write performance Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Transfer-Encoding: 8bit Date: Thu, 06 Sep 2001 16:02:52 +0100 Message-ID: <9184.999788572@redhat.com> Sender: linux-mtd-admin@lists.infradead.org Errors-To: linux-mtd-admin@lists.infradead.org List-Help: List-Post: List-Subscribe: , List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: friedrich@MAZeT.de said: > I'm using a DiskOnChip 2000 and thanks to this mailing list I'm able > to boot linux off it. My application needs to write big files pretty > fast and I was expecting a write speed of 500 kBytes/sec, the > M-Systems DOC 2000 spec claims to achieve this. Unfortunately the > fastest speed I could obtain was about 70 kBytes/sec which seems > pretty poor to me. When I asked the M-Systems support the answers were > not really helpfull so far. Are you using their drivers or the real Linux ones? If you're not using their drivers, I can understand why they couldn't help you very much. Our driver is fairly naïve, and may well be wasting a lot of time which it shouldn't. I can give you pointers on fixing that, if you're interested. -- dwmw2