From owner-freebsd-hackers Tue Mar 26 15:39:54 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id PAA06354 for hackers-outgoing; Tue, 26 Mar 1996 15:39:54 -0800 (PST) Received: from localhost.cdrom.com (localhost.cdrom.com [127.0.0.1]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id PAA06338 Tue, 26 Mar 1996 15:39:52 -0800 (PST) Message-Id: <199603262339.PAA06338@freefall.freebsd.org> X-Authentication-Warning: freefall.freebsd.org: Host localhost.cdrom.com [127.0.0.1] didn't use HELO protocol To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) cc: jkh@time.cdrom.com (Jordan K. Hubbard), hackers@freefall.freebsd.org, gibbs@freebsd.org Subject: Re: Can't read this stupid DAT tape - ARGH! In-reply-to: Your message of "Wed, 27 Mar 1996 00:07:20 +0100." <199603262307.AAA16445@uriah.heep.sax.de> Date: Tue, 26 Mar 1996 15:39:52 -0800 From: "Justin T. Gibbs" Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk >j@uriah 268% fgrep MAXPHYS /usr/include/machine/* >/usr/include/machine/param.h:#define MAXPHYS (64 * 1024) /* max > raw I/O transfer size */ > >I think you gotta bump this one to 256 K, and recompile your world. Buffers only hold 64k. How can you read a larger block size? We have to provide a way of chaining buffers together to allow such large block sizes. I proposed buffer chaining to John some time ago, but other things have been more important. >-- >cheers, J"org > >joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE >Never trust an operating system you don't have sources for. ;-) -- Justin T. Gibbs =========================================== FreeBSD: Turning PCs into workstations ===========================================