From owner-freebsd-emulation@freebsd.org Tue Sep 22 20:20:40 2015 Return-Path: Delivered-To: freebsd-emulation@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 2DFF09CEF4F for ; Tue, 22 Sep 2015 20:20:40 +0000 (UTC) (envelope-from amvandemore@gmail.com) Received: from mail-wi0-x22e.google.com (mail-wi0-x22e.google.com [IPv6:2a00:1450:400c:c05::22e]) (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 BC5371C0A for ; Tue, 22 Sep 2015 20:20:39 +0000 (UTC) (envelope-from amvandemore@gmail.com) Received: by wiclk2 with SMTP id lk2so210576318wic.0 for ; Tue, 22 Sep 2015 13:20:37 -0700 (PDT) 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=09fpbefgCuP11MQHlxLSuhCxeWQ5LMbOK06vbNXL6c4=; b=nRPDzfxIpNHcEXD8ULgdJFA64GAr3TFc6ZPXXIg9MHCJT4Wd4Hw2ejdy69oHH6OWJC Q8dyQXla2uXLzYBNqWXcqndLZbWF8q8A6uXGIRjKcQ8jnmlsHINfKILBdmoA6p1iY4+W 12lvXjMcjZJiV4XbkBgsfGyoF1AJ1v59f0Qq9iPfclCW1deU5w/YCybf0WjEwckRR0a+ eCdfPEtivreWXN7Se6WWFfa7Ns5QNBafpcj+HeDKhQgci3luScCdHMjDk56l+OIvKmde R0RFJ0hO8WxzHcXhY0qUResskJtnCojdfXE22gBOFGHrAmvTpHDhiLkfz3LZngAQkhYj mOGA== MIME-Version: 1.0 X-Received: by 10.180.101.198 with SMTP id fi6mr23056818wib.25.1442953237737; Tue, 22 Sep 2015 13:20:37 -0700 (PDT) Received: by 10.194.16.231 with HTTP; Tue, 22 Sep 2015 13:20:37 -0700 (PDT) In-Reply-To: <5601AB71.9000003@aon.at> References: <55FE9662.7000406@aon.at> <1442866256.1127084.389759513.29E96282@webmail.messagingengine.com> <56017026.6040809@aon.at> <5601AB71.9000003@aon.at> Date: Tue, 22 Sep 2015 15:20:37 -0500 Message-ID: Subject: Re: VirtualBox mangles memory From: Adam Vande More To: Martin Birgmeier Cc: =?UTF-8?Q?Bernhard_Fr=C3=B6hlich?= , "freebsd-emulation@freebsd.org" Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.20 X-BeenThere: freebsd-emulation@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Development of Emulators of other operating systems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Sep 2015 20:20:40 -0000 On Tue, Sep 22, 2015 at 2:26 PM, Martin Birgmeier wrote: > I don't think it is related to zfs. The 8GB machine did not even have > zfs loaded or a zfs file system when I first reported the problem. (The > problem with 'zfs send' only happened recently on the 16GB machine.) > > I'd like to know what has changed between FBSD 9 and 10 regarding memory > management and maybe memory tuning parameters. I run VBox w/ zfs send at dozen times a day on several systems on 10-STABLE pre and post 10.2. Never seen the symptoms you describe. > I am quite sure that the > cause is to be found there > I don't see any cause for surety in the info you have given us. Have you tried any basic steps like monitoring usage during these events or running it under truss/valgrind etc to find out what is going on? -- Adam