From owner-freebsd-emulation@FreeBSD.ORG Sat Dec 21 06:50:46 2013 Return-Path: Delivered-To: freebsd-emulation@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id C58FD175 for ; Sat, 21 Dec 2013 06:50:46 +0000 (UTC) Received: from sam.nabble.com (sam.nabble.com [216.139.236.26]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id A77191E2C for ; Sat, 21 Dec 2013 06:50:46 +0000 (UTC) Received: from [192.168.236.26] (helo=sam.nabble.com) by sam.nabble.com with esmtp (Exim 4.72) (envelope-from ) id 1VuGOb-0003xQ-63 for freebsd-emulation@freebsd.org; Fri, 20 Dec 2013 22:50:45 -0800 Date: Fri, 20 Dec 2013 22:50:45 -0800 (PST) From: BBlister To: freebsd-emulation@freebsd.org Message-ID: <1387608645158-5870477.post@n5.nabble.com> In-Reply-To: <52AADB18.3010407@rawbw.com> References: <52AADB18.3010407@rawbw.com> Subject: Re: [VBox] Why VirtualBox process is so large? MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-emulation@freebsd.org X-Mailman-Version: 2.1.17 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: Sat, 21 Dec 2013 06:50:46 -0000 One column is the VSZ and the other column is the RSS . What you should look at is the RSS column which is the real physical memory allocated. Thus, if you configure 512MB and your machine used 444MB RSS memory, then it has not touched at all a memory portion. Usually the overhead is ~80MB. So, a VM with 512MB which uses all the memory, will have RSS 512+70 ~600MB . Note that the VSZ is the virtual allocated memory, that is the memory that has been *virtually* allocated, and maybe it has been used or not. This exists in the virtual memory subsystem. Do not worry about VSZ, all operating systems have very large ammounts of this memory. The VSZ memory shows the memory that has originally requested, and the RSS the memory that has been placed on RAM (from the VSZ). The rest of the VSZ memory is either on disk, or just some entries in the process table description structure. -- View this message in context: http://freebsd.1045724.n5.nabble.com/VBox-Why-VirtualBox-process-is-so-large-tp5868082p5870477.html Sent from the freebsd-emulation mailing list archive at Nabble.com.