From owner-freebsd-stable Tue Jun 8 8: 5:43 1999 Delivered-To: freebsd-stable@freebsd.org Received: from solaris.matti.ee (solaris.matti.ee [194.126.98.135]) by hub.freebsd.org (Postfix) with ESMTP id 96E5515192 for ; Tue, 8 Jun 1999 08:05:02 -0700 (PDT) (envelope-from vallo@matti.ee) Received: from myhakas.matti.ee (myhakas.matti.ee [194.126.114.87]) by solaris.matti.ee (8.8.8/8.8.8.s) with ESMTP id SAA10063; Tue, 8 Jun 1999 18:04:42 +0300 (EET DST) Received: by myhakas.matti.ee (Postfix, from userid 1000) id E43741F96; Tue, 8 Jun 1999 18:04:33 +0300 (EEST) Date: Tue, 8 Jun 1999 18:04:33 +0300 From: Vallo Kallaste To: Rich Winkel Cc: freebsd-stable@FreeBSD.ORG Subject: Re: Freebsd FS i/o blocksize? Message-ID: <19990608180433.B25205@myhakas.matti.ee> Reply-To: vallo@matti.ee References: <199906072227.RAA06758@chumbly.math.missouri.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95.4i In-Reply-To: <199906072227.RAA06758@chumbly.math.missouri.edu>; from Rich Winkel on Mon, Jun 07, 1999 at 05:27:21PM -0500 Organization: =?iso-8859-1?Q?AS_Matti_B=FCrootehnika?= Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Mon, Jun 07, 1999 at 05:27:21PM -0500, Rich Winkel wrote: > I'm comparing raid controllers, and their relative throughputs are > heavily dependent on the scsi i/o blocksize (not surprisingly). Can > someone tell me the blocksize freebsd uses in scsi FS file i/o? If it > matters, this would be a freebsd 3.2 nfs server. The maximum is 64KB for one transaction if I can recall some of the Greg Lehey's messages. The usual is around 8KB per transaction. I can be wrong, I'm not expert by any means. -- Vallo Kallaste vallo@matti.ee To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message