From owner-freebsd-hackers Mon Aug 31 11:36:40 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id LAA04898 for freebsd-hackers-outgoing; Mon, 31 Aug 1998 11:36:40 -0700 (PDT) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from roma.coe.ufrj.br (roma.coe.ufrj.br [146.164.53.65]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id LAA04871 for ; Mon, 31 Aug 1998 11:36:35 -0700 (PDT) (envelope-from jonny@jonny.eng.br) Received: (from jonny@localhost) by roma.coe.ufrj.br (8.8.8/8.8.8) id PAA17561; Mon, 31 Aug 1998 15:34:22 -0300 (EST) (envelope-from jonny) From: Joao Carlos Mendes Luis Message-Id: <199808311834.PAA17561@roma.coe.ufrj.br> Subject: Re: 64k physio limit In-Reply-To: <199808310926.FAA13727@lor.watermarkgroup.com> from Luoqi Chen at "Aug 31, 98 05:26:35 am" To: luoqi@watermarkgroup.com (Luoqi Chen) Date: Mon, 31 Aug 1998 15:34:22 -0300 (EST) Cc: hackers@FreeBSD.ORG, imp@village.org X-Mailer: ELM [version 2.4ME+ PL40 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG #define quoting(Luoqi Chen) // > Is there any way to get a larger I/O to happen than 64k? I have a tape // > drive that would be happiest if I could do 256kish writes to it at a time, // > rather than only 64k. // > // > Warner // > // Set the device driver's cdevsw:d_maxio to 256k? Which problems arise from making this the default ? Memory waste ? Jonny -- Joao Carlos Mendes Luis M.Sc. Student jonny@jonny.eng.br Universidade Federal do Rio de Janeiro "There are two major products that come out of Berkeley: LSD and Unix. We don't believe this to be a coincidence." -- Jeremy S. Anderson To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message