From owner-freebsd-questions@FreeBSD.ORG Wed Jul 13 08:02:22 2005 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id CE23116A41C for ; Wed, 13 Jul 2005 08:02:22 +0000 (GMT) (envelope-from nlamprecht@gmail.com) Received: from zproxy.gmail.com (zproxy.gmail.com [64.233.162.197]) by mx1.FreeBSD.org (Postfix) with ESMTP id 701E843D45 for ; Wed, 13 Jul 2005 08:02:22 +0000 (GMT) (envelope-from nlamprecht@gmail.com) Received: by zproxy.gmail.com with SMTP id 16so74678nzp for ; Wed, 13 Jul 2005 01:02:21 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=epk56c8yhVByqq5NVBay1Bmr0c2qaHdQecQ2SntB4t8Int0E8LgphmE6z62ALlt/SZOSGRGuUWpynMatil/9UeR25WkvH+5fDundeX8JqQK5Wf8m5ge6pAXya0ZKt/VLzf+UyUjdoz9IeuPIVs+ai953ObAb8sjOFYl2zFl8hy4= Received: by 10.36.42.20 with SMTP id p20mr586226nzp; Wed, 13 Jul 2005 01:02:21 -0700 (PDT) Received: by 10.36.105.17 with HTTP; Wed, 13 Jul 2005 01:02:21 -0700 (PDT) Message-ID: <7cbadc870507130102568b6e41@mail.gmail.com> Date: Wed, 13 Jul 2005 10:02:21 +0200 From: Nelis Lamprecht To: Yuri In-Reply-To: <42D4C8C9.1030401@tsoft.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline References: <42D4C8C9.1030401@tsoft.com> Cc: freebsd-questions@freebsd.org Subject: Re: why CDROM operations cause system to be slow and HD operations do not X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Nelis Lamprecht List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 13 Jul 2005 08:02:22 -0000 On 7/13/05, Yuri wrote: > When I read something from CDROM my system gets visibly slow and HD > reads/writes do not have the same effect. >=20 > I think they both should have similar effect on system performance since > multiple requests should just wait till completion interrupt and other > processes shouldn't be affected. >=20 Is the CDROM attached to the same cable as your hard drive ? If so try putting it on it's own seperate cable using your secondary channel and see if that makes a difference. Regards, Nelis