From owner-freebsd-questions Thu Aug 9 21:54:38 2001 Delivered-To: freebsd-questions@freebsd.org Received: from herbelot.dyndns.org (d211.dhcp212-26.cybercable.fr [212.198.26.211]) by hub.freebsd.org (Postfix) with ESMTP id 66AF737B406 for ; Thu, 9 Aug 2001 21:54:32 -0700 (PDT) (envelope-from thierry@herbelot.com) Received: from herbelot.com (multi.herbelot.nom [192.168.1.2]) by herbelot.dyndns.org (8.9.3/8.9.3) with ESMTP id HAA46299; Fri, 10 Aug 2001 07:02:12 +0200 (CEST) (envelope-from thierry@herbelot.com) Message-ID: <3B7368EC.F27F046D@herbelot.com> Date: Fri, 10 Aug 2001 06:54:04 +0200 From: Thierry Herbelot X-Mailer: Mozilla 4.78 [en] (X11; U; Linux 2.2.12 i386) X-Accept-Language: en MIME-Version: 1.0 To: Kevin Hui Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Experiencing very slow raw write speeds on /dev/ad1 References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Kevin Hui wrote: > > Hi all, > > I have installed 2 Maxtor UDMA100 drives in my system, sharing the channel > ide0. /dev/ad0 contains all the FreeBSD partitions and ad1 is used as a > scratch drive (there's nothing on it). Ide1 channel is used for the DVD > drive (which doesn't support UDMA): > [SNIP] this is "normal" : 4.3-Release shipped with IDE write-caching disable (for security reasons) you can get back write caching with the following command : sysctl hw.ata.wc=1 TfH > > ----------------------- > FreeBSD 4.3-RELEASE #0: Sat Apr 21 10:54:49 GMT 2001 > jkh@narf.osd.bsdi.com:/usr/src/sys/compile/GENERIC > Timecounter "i8254" frequency 1193182 Hz > CPU: Pentium III/Pentium III Xeon/Celeron (1004.52-MHz 686-class CPU) > Origin = "GenuineIntel" Id = 0x686 Stepping = 6 [SNIP] -- Thierry Herbelot To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message