From owner-freebsd-questions@FreeBSD.ORG  Sun Apr 26 17:11:02 2015
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id 51F99815
 for <freebsd-questions@freebsd.org>; Sun, 26 Apr 2015 17:11:02 +0000 (UTC)
Received: from mail-wi0-x229.google.com (mail-wi0-x229.google.com
 [IPv6:2a00:1450:400c:c05::229])
 (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
 (Client CN "smtp.gmail.com",
 Issuer "Google Internet Authority G2" (verified OK))
 by mx1.freebsd.org (Postfix) with ESMTPS id E1AB71B65
 for <freebsd-questions@freebsd.org>; Sun, 26 Apr 2015 17:11:01 +0000 (UTC)
Received: by wiun10 with SMTP id n10so66914462wiu.1
 for <freebsd-questions@freebsd.org>; Sun, 26 Apr 2015 10:11:00 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113;
 h=mime-version:date:message-id:subject:from:to:content-type;
 bh=4zy1G8Pcms0lfd9eHnmuxNKVvJTJF3ABVRoI33DSGWc=;
 b=e+Iv1BI+Oe7nDjLVSzIkr1VGwUff+j+q44Jau6+kR639iPz7ZxUyFKPiy41Ni7SLl/
 B88GgJzDFO05gScxoZzcE17XeUiogYkcXc80HFLiDLDhvQXqcqNvFASFwJlRyUnac7hG
 1nlJj8F7djAPX3Qd0KBGgKNsYJfXpw0tIVCsFICLGs8qtoiAGUAkEL9ALDEbf8TnijZ0
 JI+R4NC8Zbz3Oggp9rs4M2E/qBp0Eo+q1l29czB+k2sj1j/1pGi6preuDBx+iDL+iFeN
 KGHjJtDExZD/EP9aolBRVKryko49tvBmO7M5M8/80fdHmNvySSoF9B0gc1E+h2axTeNk
 zMFw==
MIME-Version: 1.0
X-Received: by 10.180.218.108 with SMTP id pf12mr14100035wic.13.1430068260324; 
 Sun, 26 Apr 2015 10:11:00 -0700 (PDT)
Received: by 10.180.44.172 with HTTP; Sun, 26 Apr 2015 10:11:00 -0700 (PDT)
Date: Sun, 26 Apr 2015 19:11:00 +0200
Message-ID: <CAGwOe2Y+RuT7MuCTBq_swn-Ny-BS-WH1J=bZTbE9L4tuv8LmCA@mail.gmail.com>
Subject: Debugging bad memory problems
From: =?UTF-8?Q?Fernando_Apestegu=C3=ADa?= <fernando.apesteguia@gmail.com>
To: User Questions <freebsd-questions@freebsd.org>
Content-Type: text/plain; charset=UTF-8
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.20
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-questions>, 
 <mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions/>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
 <mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 26 Apr 2015 17:11:02 -0000

Hi,

I suspect my old and beloved AMD64 laptop is suffering from bad memory
problems: I get random crashes of well tested programs like sh, which,
etc even when I executed some of them from /rescue.

I wanted to check the memory banks. I installed
/usr/ports/sysutils/memtest86+ and try to run it at boot. According to
the documentation, from the boot loader prompt:

unload
load /boot/opt/memtest86+
boot

But at the time of loading the file, the laptop reboots.

I also tried /usr/ports/sysutils/memtest. But when I run it (as root), I get:

$memtester 1G

memtester version 4.3.0 (64-bit)
Copyright (C) 2001-2012 Charles Cazabon.
Licensed under the GNU General Public License version 2 (only).

pagesize is 4096
pagesizemask is 0xfffffffffffff000
want 1024MB (1073741824 bytes)
got  1024MB (1073741824 bytes), trying mlock ...too many pages, reducing...
got  1023MB (1073737728 bytes), trying mlock ...too many pages, reducing...
got  1023MB (1073733632 bytes), trying mlock ...too many pages, reducing...
got  1023MB (1073729536 bytes), trying mlock ...too many pages, reducing...
got  1023MB (1073725440 bytes), trying mlock ...too many pages, reducing...
got  1023MB (1073721344 bytes), trying mlock ...too many pages, reducing...
got  1023MB (1073717248 bytes), trying mlock ...too many pages, reducing...
got  1023MB (1073713152 bytes), trying mlock ...too many pages, reducing...
got  1023MB (1073709056 bytes), trying mlock ...too many pages, reducing...
got  1023MB (1073704960 bytes), trying mlock ...too many pages, reducing...
got  1023MB (1073700864 bytes), trying mlock ...too many pages, reducing...
got  1023MB (1073696768 bytes), trying mlock ...too many pages, reducing...
got  1023MB (1073692672 bytes), trying mlock ...too many pages, reducing...
got  1023MB (1073688576 bytes), trying mlock ...too many pages, reducing...
got  1023MB (1073684480 bytes), trying mlock ...too many pages, reducing...
got  1023MB (1073680384 bytes), trying mlock ...too many pages, reducing...
got  1023MB (1073676288 bytes), trying mlock ...too many pages, reducing...
got  1023MB (1073672192 bytes), trying mlock ...too many pages, reducing...
got  1023MB (1073668096 bytes), trying mlock ...too many pages, reducing...
got  1023MB (1073664000 bytes), trying mlock ...too many pages, reducing...
got  1023MB (1073659904 bytes), trying mlock ...too many pages, reducing...

...
...

got  0MB (73728 bytes), trying mlock ...too many pages, reducing...
got  0MB (69632 bytes), trying mlock ...too many pages, reducing...
got  0MB (65536 bytes), trying mlock ...locked.

Any help with these two problems or any alternative programs?

Thanks in advance.