From owner-freebsd-current  Fri Jun 28 12:40:25 2002
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id E49AF37B407
	for <current@FreeBSD.ORG>; Fri, 28 Jun 2002 12:40:13 -0700 (PDT)
Received: from sccrmhc01.attbi.com (sccrmhc01.attbi.com [204.127.202.61])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 5F4E743E0A
	for <current@FreeBSD.ORG>; Fri, 28 Jun 2002 12:40:13 -0700 (PDT)
	(envelope-from julian@elischer.org)
Received: from InterJet.elischer.org ([12.232.206.8])
          by sccrmhc01.attbi.com
          (InterMail vM.4.01.03.27 201-229-121-127-20010626) with ESMTP
          id <20020628194012.CFIC29588.sccrmhc01.attbi.com@InterJet.elischer.org>;
          Fri, 28 Jun 2002 19:40:12 +0000
Received: from localhost (localhost.elischer.org [127.0.0.1])
	by InterJet.elischer.org (8.9.1a/8.9.1) with ESMTP id MAA75423;
	Fri, 28 Jun 2002 12:34:25 -0700 (PDT)
Date: Fri, 28 Jun 2002 12:34:24 -0700 (PDT)
From: Julian Elischer <julian@elischer.org>
To: Matthew Dillon <dillon@apollo.backplane.com>
Cc: FreeBSD current users <current@FreeBSD.ORG>
Subject: Re: something funny with soft updates?
In-Reply-To: <200206281828.g5SIS6xI006284@apollo.backplane.com>
Message-ID: <Pine.BSF.4.21.0206281233500.75410-100000@InterJet.elischer.org>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: owner-freebsd-current@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-current.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-current>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-current>
X-Loop: FreeBSD.ORG

maybe, but whan I first committed soft updates, I got between 10 and 15 %
improvements in times..


On Fri, 28 Jun 2002, Matthew Dillon wrote:

> 
> :1389.803u 594.961s 35:59.14 91.9%       2697+2248k 11839+66940io 3701pf+0w
> :
> :It's interesting that despite the the extra writes (63640 of them)
> :it took almost the same time from all metrics.
> :
> :this is a 35 minute subsection of buildworld..
> :
> :i.e. buildworld up to a particular point,
> :
> :there may not be anything wrong but I expected more improvement.
> :I remember that when I first committed softupdates it made a noticable
> :difference....
> 
>     Julian, please note that a buildworld does *NOT* seriously exercise
>     the filesystem.  I/O ops are mostly reads.  The only area where 
>     softupdates might have a major effect would be the rm -rf of the
>     object tree at the beginning.
> 
> 						-Matt
> 
> 


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-current" in the body of the message