From owner-freebsd-scsi Mon Sep 2 14:37:55 2002 Delivered-To: freebsd-scsi@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 123F237B400 for ; Mon, 2 Sep 2002 14:37:53 -0700 (PDT) Received: from odin.ac.hmc.edu (Odin.AC.HMC.Edu [134.173.32.75]) by mx1.FreeBSD.org (Postfix) with ESMTP id A475A43E72 for ; Mon, 2 Sep 2002 14:37:51 -0700 (PDT) (envelope-from brdavis@odin.ac.hmc.edu) Received: from odin.ac.hmc.edu (IDENT:brdavis@localhost.localdomain [127.0.0.1]) by odin.ac.hmc.edu (8.12.3/8.12.3) with ESMTP id g82Lbnwu029227; Mon, 2 Sep 2002 14:37:49 -0700 Received: (from brdavis@localhost) by odin.ac.hmc.edu (8.12.3/8.12.3/Submit) id g82Lbnjo029226; Mon, 2 Sep 2002 14:37:49 -0700 Date: Mon, 2 Sep 2002 14:37:49 -0700 From: Brooks Davis To: Brooks Davis , scsi@freebsd.org Subject: Re: [PATCH] make SCSI_DELAY tunable Message-ID: <20020902143749.B27220@Odin.AC.HMC.Edu> References: <20020902171959.A28616@web1.merit.edu> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-md5; protocol="application/pgp-signature"; boundary="yEPQxsgoJgBvi8ip" Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: <20020902171959.A28616@web1.merit.edu>; from web@merit.edu on Mon, Sep 02, 2002 at 05:20:00PM -0400 X-Virus-Scanned: by amavisd-milter (http://amavis.org/) on odin.ac.hmc.edu Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org --yEPQxsgoJgBvi8ip Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Sep 02, 2002 at 05:20:00PM -0400, William Bulley wrote: > Question: how does one eliminate the (even longer) delay when the > kernel probes the ATAPCI devices? I have timed it on my system at > about 30 seconds. I have only one device on my IDE chain (CDROM) > and it always takes FOREVER to decide it (the BIOS?) is happy. If > you think 15 seconds is bad for SCSI, this is worse, much worse. I don't think that's this easy. You'd have to talk to Soren about it though. In this case, we just have an arbitrary delay which was set to a very conservative default. By making it tunable we should be able to set it to a reasonable default instead. -- Brooks --=20 Any statement of the form "X is the one, true Y" is FALSE. PGP fingerprint 655D 519C 26A7 82E7 2529 9BF0 5D8E 8BE9 F238 1AD4 --yEPQxsgoJgBvi8ip Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE9c9osXY6L6fI4GtQRAtGqAKDBjveW1KLrvvwCdN2wOhNNLUGZFwCguX9G DqDobZ3BGXBmIhuV918fOBo= =c6Oi -----END PGP SIGNATURE----- --yEPQxsgoJgBvi8ip-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message