From owner-freebsd-current@FreeBSD.ORG Wed Apr 16 04:30:05 2003 Return-Path: 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 4EB5337B401 for ; Wed, 16 Apr 2003 04:30:05 -0700 (PDT) Received: from mailout04.sul.t-online.com (mailout04.sul.t-online.com [194.25.134.18]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2791143FA3 for ; Wed, 16 Apr 2003 04:30:04 -0700 (PDT) (envelope-from Alexander@Leidinger.net) Received: from fwd11.sul.t-online.de by mailout04.sul.t-online.com with smtp id 195l72-0004Qa-01; Wed, 16 Apr 2003 13:30:00 +0200 Received: from Andro-Beta.Leidinger.net (520065502893-0001@[80.131.111.114]) by fmrl11.sul.t-online.com with esmtp id 195l6v-2A34AyC; Wed, 16 Apr 2003 13:29:53 +0200 Received: from Magelan.Leidinger.net (Magelan [192.168.1.1]) h3GBTqBR036405; Wed, 16 Apr 2003 13:29:52 +0200 (CEST) (envelope-from Alexander@Leidinger.net) Received: from Magelan.Leidinger.net (netchild@localhost [127.0.0.1]) by Magelan.Leidinger.net (8.12.9/8.12.9) with SMTP id h3GBTplt002557; Wed, 16 Apr 2003 13:29:51 +0200 (CEST) (envelope-from Alexander@Leidinger.net) Date: Wed, 16 Apr 2003 13:29:51 +0200 From: Alexander Leidinger To: beaker@hot.pl.?= (Krzysztof =?ISO-8859-1?Q?J=EAdruczyk) Message-Id: <20030416132951.2d855e44.Alexander@Leidinger.net> In-Reply-To: References: <3E9BCC5F.4050603@ezri.org> <001d01c30356$9bba6260$0200000a@fireball> <3E9C1928.60206@ezri.org> X-Mailer: Sylpheed version 0.8.9claws (GTK+ 1.2.10; i386-portbld-freebsd5.0) Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Sender: 520065502893-0001@t-dialin.net cc: current@freebsd.org Subject: Re: Adjusting pcm buffersize? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 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: Wed, 16 Apr 2003 11:30:05 -0000 On Tue, 15 Apr 2003 20:29:53 +0200 beaker@hot.pl (Krzysztof J=EAdruczyk) wrote: > And let me just note, that it is not ATA's fault (I believe it was > suggested before that the problem is connected to using PIO ATA > modes). I have two U160 SCSI drives connected to Adaptec 29160LP > controller + SB Live card and also suffer badly from this problem when > for example mozilla's port is unbzipping sources... AFAIK there are three possibilities for the problem: - The problem is "caused" by the restructuring of the kernel because of the SMPng work. When the kernel is completely preemptive and the locking of the subsystems is done this problem should vanish. - The problem is caused by some pieces in the kernel which block interrupts for too long (this will get addressed when SMPng runs stable). - The problem is because of both of above... At least this is how I had understand the problem last time it was analyzed. Bye, Alexander. --=20 Secret hacker rule #11: hackers read manuals. http://www.Leidinger.net Alexander @ Leidinger.net GPG fingerprint =3D C518 BC70 E67F 143F BE91 3365 79E2 9C60 B006 3FE7