From owner-freebsd-hackers Mon Nov 17 23:59:42 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id XAA01514 for hackers-outgoing; Mon, 17 Nov 1997 23:59:42 -0800 (PST) (envelope-from owner-freebsd-hackers) Received: from super.zippo.com (perry.zippo.com [207.211.168.33]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id XAA01505 for ; Mon, 17 Nov 1997 23:59:40 -0800 (PST) (envelope-from reyesf@super.zippo.com) Received: (from reyesf@localhost) by super.zippo.com (8.8.6/8.8.7) id XAA20331; Mon, 17 Nov 1997 23:59:39 -0800 (PST) Message-Id: <199711180759.XAA20331@super.zippo.com> From: "Francisco Reyes" To: "hackers@freebsd.org" Date: Tue, 18 Nov 97 02:59:09 -0400 Reply-To: "Francisco Reyes" Priority: Normal X-Mailer: PMMail 1.95a For OS/2 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Subject: Optimizing HD I/O. What size to use to read/write? Sender: owner-freebsd-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk I am going to start working on a program which will be heavy on I/O. I was wondering what would be a good size to read/write at a time. What is the minimun block size FreeBSD allocates? 4K? 8K? Is it HD dependent?