From owner-freebsd-questions@FreeBSD.ORG Thu May 28 12:50:24 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 791C61065676 for ; Thu, 28 May 2009 12:50:24 +0000 (UTC) (envelope-from wojtek@wojtek.tensor.gdynia.pl) Received: from wojtek.tensor.gdynia.pl (wojtek.tensor.gdynia.pl [IPv6:2001:4070:101:2::1]) by mx1.freebsd.org (Postfix) with ESMTP id A03F08FC24 for ; Thu, 28 May 2009 12:50:23 +0000 (UTC) (envelope-from wojtek@wojtek.tensor.gdynia.pl) Received: from wojtek.tensor.gdynia.pl (localhost [IPv6:::1]) by wojtek.tensor.gdynia.pl (8.14.3/8.14.3) with ESMTP id n4SCoHi2060052 for ; Thu, 28 May 2009 14:50:17 +0200 (CEST) (envelope-from wojtek@wojtek.tensor.gdynia.pl) Received: from localhost (wojtek@localhost) by wojtek.tensor.gdynia.pl (8.14.3/8.14.3/Submit) with ESMTP id n4SCoG1V060049 for ; Thu, 28 May 2009 14:50:16 +0200 (CEST) (envelope-from wojtek@wojtek.tensor.gdynia.pl) Date: Thu, 28 May 2009 14:50:16 +0200 (CEST) From: Wojciech Puchar To: freebsd-questions@freebsd.org Message-ID: User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; format=flowed; charset=US-ASCII Subject: superpages? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 28 May 2009 12:50:24 -0000 maybe not new news but i just found this: http://www.h-online.com/open/FreeBSD-7-2-released-now-with-Superpages--/news/113204 It says about pages 4KB and 4MB and that it's done automatically. Two questions: 1) is it on all architectures including amd64? As amd64 supports 4KB, 2MB and 1GB pages it sounds inconsistent with the above. 2) how does this "automatic" selection work. By just having program with large continous data space (like squid proxy) will it put that data on 2MB pages. if it's true i would be enough reason to upgrade to 7.2 on 2 computers. thanks