From owner-freebsd-arm@FreeBSD.ORG Fri Nov 28 19:32:43 2014 Return-Path: Delivered-To: freebsd-arm@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 5A8CFA5E; Fri, 28 Nov 2014 19:32:43 +0000 (UTC) Received: from mail-qa0-x230.google.com (mail-qa0-x230.google.com [IPv6:2607:f8b0:400d:c00::230]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 07ABCA00; Fri, 28 Nov 2014 19:32:43 +0000 (UTC) Received: by mail-qa0-f48.google.com with SMTP id v10so4798836qac.7 for ; Fri, 28 Nov 2014 11:32:42 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=wd6ai1jBBuoX+UZtgS29F845FtrDxTc0d67F6brZcdM=; b=HLLC6WYLRkDeUR0G3wiwAhEFmXL6NX1RT+3irBLlyTTz6WdpJKLhZFiP6EB092kClv 7FRYiZ6D0256C4Ciyk0nHsByvGUmwQZhAPx6s4dnd9fT8FbauU+pMTa5g9cg+6btGpgV jT/Tyzyx/l7kB1E066ys+6xh0/FWO/H9F5OiEAcRYCELIsiB8ZMSNlaga5P2gxtIm7G2 F5Sl648dOgx+RcrsMNAur0iwOcwxbbRi0O1XekUfHmU/wotnEiOCtEhs+lF24zRIuAZ1 Uln85305m1bspLB/Ee3pXRzQTfB3/vIiAMQHsmytW9WGJK8U+3yN2R0GJCIQDFWt0b/z iGdw== MIME-Version: 1.0 X-Received: by 10.140.39.5 with SMTP id u5mr28745393qgu.28.1417203162154; Fri, 28 Nov 2014 11:32:42 -0800 (PST) Received: by 10.140.23.242 with HTTP; Fri, 28 Nov 2014 11:32:42 -0800 (PST) In-Reply-To: <1417185069.1047.4.camel@revolution.hippie.lan> References: <20141113125236.b16cd4e5f0e339eac0494cd4@ulrich-grey.de> <20141115143444.5ad037548e06f289d2532fb7@ulrich-grey.de> <20141119225903.81fbbc7809093a0e6e0de9d5@ulrich-grey.de> <20141120151900.a68c6d8316b96a62cb65d17a@ulrich-grey.de> <20141121115941.54d4e36b103341c3adf7eb36@ulrich-grey.de> <20141124132733.4e96b906f0d1ab69969dddd9@ulrich-grey.de> <1416840814.1147.380.camel@revolution.hippie.lan> <20141125225451.924a5df4bdb4753db273b8c5@ulrich-grey.de> <20141127234239.e2c40a8fb99ba41f9ec3a7e7@ulrich-grey.de> <20141128001235.6591396b2f6298b861a96b57@ulrich-grey.de> <1417185069.1047.4.camel@revolution.hippie.lan> Date: Fri, 28 Nov 2014 20:32:42 +0100 Message-ID: Subject: Re: Another Test Run with Alternative pmap Implementation From: Svatopluk Kraus To: Ulrich Grey Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.18-1 Cc: freebsd-arm@freebsd.org, Ian Lepore X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: "Porting FreeBSD to ARM processors." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 28 Nov 2014 19:32:43 -0000 On Fri, Nov 28, 2014 at 3:31 PM, Ian Lepore wrote: > On Fri, 2014-11-28 at 10:43 +0100, Svatopluk Kraus wrote: > > Hmm, IMO, the LOR is well known. The broken pipe likely points to a > problem > > with SD card where your system is running. So, somehow your SD card stops > > working. It could be caused, in the order of likelihood, because of > > > > (1) bad SD card, > > (2) bad driver, > > (3) something else. > > > > Svata > > We haven't had any reports of trouble with the imx6 sd driver. > > I would try turning off the DIAGNOSTIC option. It's really more harmful > than useful on arm. On armv4 it makes the entire system lock up for > seconds at a time as it runs some really expensive loop to verify > something, I think it may have been VM data structures. Even on a > faster chip such as imx6 this could cause problems like sdcard timeouts, > as well as making a 2 hour compile take 7 hours. > > -- Ian > I agree with Ian, please do not use DIAGNOSTICS option. I'm sorry that I wanted you to set it. Michal recently told me that he had same experience like Ian has described here. Anyhow, if DIAGNOSTICS is enabled, there is a possibility to avoid the memory check by setting sysctl debug.vmem_check=0. Svata