From owner-freebsd-stable Fri Oct 26 2:44:20 2001 Delivered-To: freebsd-stable@freebsd.org Received: from salmon.maths.tcd.ie (salmon.maths.tcd.ie [134.226.81.11]) by hub.freebsd.org (Postfix) with SMTP id 51D5A37B405 for ; Fri, 26 Oct 2001 02:44:17 -0700 (PDT) Received: from walton.maths.tcd.ie by salmon.maths.tcd.ie with SMTP id ; 26 Oct 2001 10:44:14 +0100 (BST) Date: Fri, 26 Oct 2001 10:44:13 +0100 From: David Malone To: Sean Chittenden Cc: Ian Dowse , Cy Schubert - ITSD Open Systems Group , Anatoliy Dmytriyev , freebsd-stable@FreeBSD.ORG Subject: Re: UFS_DIRHASH - your opinion Message-ID: <20011026104413.A14546@walton.maths.tcd.ie> References: <20011025140651.A8755@ninja1.internal> <200110252229.aa61044@salmon.maths.tcd.ie> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <200110252229.aa61044@salmon.maths.tcd.ie>; from dwmalone@maths.tcd.ie on Thu, Oct 25, 2001 at 10:29:43PM +0100 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 Thu, Oct 25, 2001 at 10:29:43PM +0100, David Malone wrote: > BTW - you don't need to rebuild the filesystem to use dirhash. All > you need to do is compile it into the kernel. If it is compiled in > then it automatically works on all ufs filesystems. If anyone is interested in doing dirhash benchmarking then the thing to time is probably the system time of the opperation you are interested in. Also, doing: sysctl -w vfs.ufs.dirhash_docheck=0 before running the benchmark will turn off some debugging code in dirhash. Ian has just disabeled this by default in -curren and it will be disabeled in -stable shortly. David. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message