From owner-freebsd-stable Mon Feb 18 7: 5:14 2002 Delivered-To: freebsd-stable@freebsd.org Received: from post.mail.nl.demon.net (post-11.mail.nl.demon.net [194.159.73.21]) by hub.freebsd.org (Postfix) with ESMTP id 1681A37B400 for ; Mon, 18 Feb 2002 07:05:08 -0800 (PST) Received: from [212.238.194.207] (helo=mailhost.raggedclown.net) by post.mail.nl.demon.net with esmtp (Exim 3.33 #1) id 16cpLn-000BJ5-00 for freebsd-stable@FreeBSD.ORG; Mon, 18 Feb 2002 15:05:07 +0000 Received: from angel.raggedclown.net (angel.raggedclown.intra [192.168.1.7]) by mailhost.raggedclown.net (Ragged Clown Mail Gateway [buffy]) with ESMTP id 8C93613040 for ; Mon, 18 Feb 2002 16:05:06 +0100 (CET) Received: by angel.raggedclown.net (Ragged Clown Host [angel], from userid 6002) id 6510122590; Mon, 18 Feb 2002 16:05:06 +0100 (CET) Date: Mon, 18 Feb 2002 16:05:06 +0100 From: Cliff Sarginson To: freebsd-stable@FreeBSD.ORG Subject: Re: Support for DAO in burncd under -STABLE?? Message-ID: <20020218150506.GB863@raggedclown.net> References: <20020217.172517.117915195.imp@village.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20020217.172517.117915195.imp@village.org> User-Agent: Mutt/1.3.27i Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Sun, Feb 17, 2002 at 05:25:17PM -0800, M. Warner Losh wrote: > In message: > Paul Mather writes: > : After a little more research, I found that DAO is supported in burncd > : under 5.0-CURRENT. However, after briefly installing FreeBSD from the > : 5.0-20020214-CURRENT snapshot, I reverted back to 4.5-RELEASE because my > : I/O performance under -CURRENT appeared to be about 1/3rd of that under > : 4.5-RELEASE (measured by install and dump progress). (Did I pick a bad > : snapshot to install??) > > Likely you had a kernel that had WITNESS enabled. That's a huge > performance killer. However, we're at the worst part of the lock > pushdown right now, so there's about a 15-20% performance hit > (measured by make buildworld, aka the "worldstone"). Things should be > getting better from this point forward... > Oh, that explains it (although I don't know what WITNESS is), I rebuilt CURRENT yesterday, in the time it took I translated Lord of the Rings into mediaeval Church Latin. -- Regards Cliff Sarginson -- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message