From owner-freebsd-hackers Thu May 24 2:44:18 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from kawoserv.kawo2.rwth-aachen.de (kawoserv.kawo2.RWTH-Aachen.DE [134.130.180.1]) by hub.freebsd.org (Postfix) with ESMTP id 3450337B422 for ; Thu, 24 May 2001 02:44:15 -0700 (PDT) (envelope-from alex@big.endian.de) Received: from zerogravity.kawo2.rwth-aachen.de (zerogravity.kawo2.rwth-aachen.de [134.130.181.28]) by kawoserv.kawo2.rwth-aachen.de (8.9.3/8.6.9) with ESMTP id LAA16165; Thu, 24 May 2001 11:44:13 +0200 Received: by zerogravity.kawo2.rwth-aachen.de (Postfix, from userid 1001) id 15BC114CD4; Thu, 24 May 2001 11:44:13 +0200 (CEST) Date: Thu, 24 May 2001 11:44:12 +0200 From: Alexander Langer To: Ed Hudson Cc: Mike Silbersack , Ed Hudson , hackers@FreeBSD.ORG Subject: Re: general speed differences between 4.1.1-RELEASE and 4.3-RELEASE Message-ID: <20010524114412.D981@zerogravity.kawo2.rwth-aachen.d> References: <200105240619.f4O6JJ900472@m44.spnet.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <200105240619.f4O6JJ900472@m44.spnet.com>; from elh_fbsd@spnet.com on Wed, May 23, 2001 at 11:19:19PM -0700 X-PGP-Fingerprint: 44 28 CA 4C 46 5B D3 A8 A8 E3 BA F3 4E 60 7D 7F X-PGP-at: finger alex@big.endian.de X-Verwirrung: Dieser Header dient der allgemeinen Verwirrung. Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Thus spake Ed Hudson (elh_fbsd@spnet.com): > for my money, hw.ata.wc=1 soft updates OFF is a better performing > choice than hw.ata.wc=0 and soft updates ON. > (soft updates are great, but i really dislike the performance > stalls that it (or async mode) engenders with big copies/etc > for other processes). Well, that must be decided on situtation by situation. Most people read a much bigger amount of data than they actually write, and the small amount of data they write is then (almost!) guaranteed to be consistent. For webservers, were only few changes to the static pages are made, this mode is the correct behaviour, for newsservers it's probably not. The way it's done at the moment is ok, IMO. Alex -- cat: /home/alex/.sig: No such file or directory To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message