From owner-freebsd-hackers@FreeBSD.ORG Wed Nov 7 15:11:11 2012 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id B622B497 for ; Wed, 7 Nov 2012 15:11:11 +0000 (UTC) (envelope-from erik@cederstrand.dk) Received: from csmtp2.one.com (csmtp2.one.com [91.198.169.22]) by mx1.freebsd.org (Postfix) with ESMTP id 691868FC0A for ; Wed, 7 Nov 2012 15:11:11 +0000 (UTC) Received: from [192.168.1.18] (unknown [217.157.7.221]) by csmtp2.one.com (Postfix) with ESMTPA id B976A3078444; Wed, 7 Nov 2012 15:11:03 +0000 (UTC) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 6.2 \(1499\)) Subject: Re: pgbench performance is lagging compared to Linux and DragonflyBSD? From: Erik Cederstrand In-Reply-To: Date: Wed, 7 Nov 2012 16:11:03 +0100 Content-Transfer-Encoding: quoted-printable Message-Id: <47D1FF90-A96D-4620-9AA0-324865CE827B@cederstrand.dk> References: <50980ADD.4010402@rawbw.com> To: Nikolay Denev X-Mailer: Apple Mail (2.1499) Cc: Garrett Cooper , Wojciech Puchar , "freebsd-hackers@freebsd.org" , Yuri X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Nov 2012 15:11:11 -0000 Den 07/11/2012 kl. 15.35 skrev Nikolay Denev : > Actually MAXBSIZE is 64k, MAXPHYS is 128k. >=20 > There was a thread about NFS performance where it was mentioned that = bigger MAXBSIZE leads to KVA fragmentation. That thread starts here: = http://lists.freebsd.org/pipermail/freebsd-arch/2010-April/010143.html Erik=