From owner-freebsd-scsi Sun Dec 12 14:14: 5 1999 Delivered-To: freebsd-scsi@freebsd.org Received: from mail.omnilink.net (mail.omnilink.net [194.64.25.6]) by hub.freebsd.org (Postfix) with ESMTP id BB56514E00 for ; Sun, 12 Dec 1999 14:14:02 -0800 (PST) (envelope-from ob@omnilink.net) Received: from ntsrv2 (my.jav.net [212.255.14.194]) by mail.omnilink.net (8.9.3/8.9.3) with SMTP id XAA66672; Sun, 12 Dec 1999 23:15:26 +0100 (CET) (envelope-from ob@omnilink.net) Message-ID: <006201bf44ee$21a01df0$c20effd4@jav.net> From: "Oliver Blasnik" To: , "Justin T. Gibbs" References: <199912121537.IAA27060@narnia.plutotech.com> Subject: Re: Again: CRD-Raid-Controller and FreeBSD 3.x Date: Sun, 12 Dec 1999 23:13:34 +0100 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2014.211 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2014.211 Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org I asked after several problems: > > As a work-around the only thing was to disable tagged-queuing on all systems > > (added that devices to cam_xpt.c and build a new kernel). None of these > > messages occured anymore. Justin wrote: > The timeout should be 60 seconds. That is a veritable eternity for > a disk, especially since we do issue ordered tagged commads from > time to time to ensure that no tag starvation occurs on the device. Ok, 60 seconds should be enough :) > One thing you could try doing is limiting the number of tags we > attempt to use. Take a look at the quirk entries for the Quantum > Atlas drives in cam_xpt.c for details. I just checked out the datasheet-pdf of that 5440 at cmd.com. They write something about 32 commands-cache per host. Possibly they do mean tagq. Btw, I can en/disable tagged queuing at controller-level, but not set the size of the queue. That brings me to the question -> how much tagq's are default with that freebsd-drivers? If it's more than 32, a nice PR should be transmitted with including that CMD-Controllers to cam_xpt.c's list. > Did you try contacting CRD's technical support? Not yet, it's Sunday and I am @home... Cu, Oliver To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message