From owner-freebsd-current@FreeBSD.ORG Sun Aug 14 07:39:40 2005 Return-Path: X-Original-To: freebsd-current@freebsd.org Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B1F9916A41F for ; Sun, 14 Aug 2005 07:39:40 +0000 (GMT) (envelope-from joseph.koshy@gmail.com) Received: from rproxy.gmail.com (rproxy.gmail.com [64.233.170.207]) by mx1.FreeBSD.org (Postfix) with ESMTP id 49D0543D46 for ; Sun, 14 Aug 2005 07:39:40 +0000 (GMT) (envelope-from joseph.koshy@gmail.com) Received: by rproxy.gmail.com with SMTP id r35so696578rna for ; Sun, 14 Aug 2005 00:39:39 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=SfNAzmd56iMyNTpx8hGAlxTp3jpVg12c98OYE/Ra4TeczPSyLo9FgMpWim+7aqdHEkVE9AavUmBjQUJMhXSUbwuA0gcwuhPVKgxLe5GUOUe5Q4dn3lEtEvK5okwtQVIl5mT6oVDGNxn/vFiEMw2TLSUzYZIyUeNlARsBDhwDKko= Received: by 10.38.86.10 with SMTP id j10mr1607165rnb; Sun, 14 Aug 2005 00:39:39 -0700 (PDT) Received: by 10.38.13.79 with HTTP; Sun, 14 Aug 2005 00:39:39 -0700 (PDT) Message-ID: <84dead7205081400391bc377ac@mail.gmail.com> Date: Sun, 14 Aug 2005 13:09:39 +0530 From: Joseph Koshy To: "R. Tyler Ballance" In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline References: Cc: freebsd-current@freebsd.org Subject: Re: Disk I/O and Peripheral I/O in 6.0-BETA X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 14 Aug 2005 07:39:40 -0000 rtb> Howdy, I'm using a source build of 6.0-BETA2 (built over 5.4-STABLE) rtb> Whenever I have huge disk related processes running, `rm -rf src obj rtb> ports` for example, almost all other forms of I/O suffer.=20 Do you have options WITNESS, INVARIANTS, INVARIANT_SUPPORT in your kernel? These are on in 6.0-BETA and can account for a significant performance loss. --=20 FreeBSD Volunteer, http://people.freebsd.org/~jkoshy