Date: Thu, 24 May 2001 10:18:13 -0700 From: Ted Faber <faber@ISI.EDU> To: Mike Silbersack <silby@silby.com> Cc: Ed Hudson <elh@spnet.com>, hackers@freebsd.org, Soren Schmidt <sos@freebsd.dk> Subject: Re: general speed differences between 4.1.1-RELEASE and 4.3-RELEASE Message-ID: <20010524101813.A563@ted.isi.edu> In-Reply-To: <20010524004057.V55532-100000@achilles.silby.com>; from silby@silby.com on Thu, May 24, 2001 at 12:48:02AM -0500 References: <3B0C9DBB.35724C09@spnet.com> <20010524004057.V55532-100000@achilles.silby.com>
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--bg08WKrSYDhXBjb5 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Thu, May 24, 2001 at 12:48:02AM -0500, Mike Silbersack wrote: > Write caching is now off by default. man ata to see how to turn it back > on. Ummmm. I setting hw.ata.wc=1 and got: ted:~$ sudo sysctl -w hw.ata.wc=1 sysctl: oid 'hw.ata.wc' is read only I'm assuming that this is because my controller doesn't support write caching. Can anyone confirm this? If that's why the oid is read-only, a one-liner in the ata man page (that I'm happy to write) would be a good thing. Here's what I hope is the relevant stuff from dmesg: ted:~$ dmesg | egrep '^(ata|a[cd])' atapci0: <Intel PIIX4 ATA33 controller> port 0x10a0-0x10af at device 7.1 on pci0 ata0: at 0x1f0 irq 14 on atapci0 ata1: at 0x170 irq 15 on atapci0 ad0: 19609MB <QUANTUM FIREBALLP KX20.5> [39842/16/63] at ata0-master UDMA33 acd0: CDROM <CRD-8400B> at ata1-master using PIO4 acd1: CD-RW <CD-RW CRX100E> at ata1-slave using PIO4 --bg08WKrSYDhXBjb5 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.5 (FreeBSD) Comment: For info see http://www.gnupg.org iD8DBQE7DUJVaUz3f+Zf+XsRArPaAJ4jaSm23fBbamvHmOHbEpMyWbAzcgCgrXvY H9b7Nvd+hn/C4UcAPRPhFoM= =pxRR -----END PGP SIGNATURE----- --bg08WKrSYDhXBjb5-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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