From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Fri, 06 Jan 2006 08:54:03 +0000 (GMT) Received: from smtp-out.hotpop.com ([38.113.3.61]:61839 "EHLO smtp-out.hotpop.com") by ftp.linux-mips.org with ESMTP id S8133528AbWAFIxe (ORCPT ); Fri, 6 Jan 2006 08:53:34 +0000 Received: from hotpop.com (kubrick.hotpop.com [38.113.3.105]) by smtp-out.hotpop.com (Postfix) with SMTP id 91A062222269 for ; Fri, 6 Jan 2006 08:56:02 +0000 (UTC) Received: from [10.8.64.42] (unknown [62.253.252.7]) by smtp-2.hotpop.com (Postfix) with ESMTP id 48AF622221A0; Fri, 6 Jan 2006 08:56:00 +0000 (UTC) Subject: Re: sometimes get "crc error" while uncompressed ramdisk From: jp To: zhuzhenhua , linux-mips In-Reply-To: <50c9a2250601052240n5696e353teb2b798ecbf802f0@mail.gmail.com> References: <50c9a2250601052240n5696e353teb2b798ecbf802f0@mail.gmail.com> Content-Type: text/plain Date: Fri, 06 Jan 2006 08:56:53 +0000 Message-Id: <1136537813.5239.23.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.5.3 Content-Transfer-Encoding: 7bit X-HotPOP: ----------------------------------------------- Sent By HotPOP.com FREE Email Get your FREE POP email at www.HotPOP.com ----------------------------------------------- Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 9784 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: jaypee@hotpop.com Precedence: bulk X-list: linux-mips On Fri, 2006-01-06 at 14:40 +0800, zhuzhenhua wrote: > i make a ramdisk by myself, and sometimes the kernel boot the ramdisk > correctly but sometimes it printk "crc error" while uncompressed > ramdisk, did someone meet this situation? > thanks for any hints > Assuming your build and everything else is as it should be it may be a RAM fault. Are you using a custom board? I had some prototype boards here with some really long tracks to RAM. (and some really short ones too!) Memory tests such walking ones worked fine but the decompress of the ramdisk works RAM pretty hard and it showed up intermittent faults like you describe. Tended to be worse when the board was warm. I'd spray some Freezit on and it would go back to working OK. You could also try running the RAM slower and see if the fault disappears. JP