Date: Wed, 30 May 2001 05:05:31 -0700 From: Kris Kennaway <kris@obsecurity.org> To: Terry Lambert <tlambert2@mindspring.com> Cc: Mike Silbersack <silby@silby.com>, Terry Lambert <tlambert@primenet.com>, hackers@FreeBSD.ORG Subject: Re: general speed differences between 4.1.1-RELEASE and 4.3-RELEASE Message-ID: <20010530050531.A64906@xor.obsecurity.org> In-Reply-To: <3B14D2AF.47CD9ECB@mindspring.com>; from tlambert2@mindspring.com on Wed, May 30, 2001 at 03:59:59AM -0700 References: <20010527214531.R65666-100000@achilles.silby.com> <3B14D2AF.47CD9ECB@mindspring.com>
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[-- Attachment #1 --] On Wed, May 30, 2001 at 03:59:59AM -0700, Terry Lambert wrote: > > 1. Have the ata driver leave the write cache setting > > alone by default, providing a sysctl which can cause > > disabled or enabled if requested. When the default is > > allowed, put something in dmesg which says "Note: Write > > caching may be enabled. See ata(4) for the reliability > > implications of this." > > You need to look at the code; it would be relatively hard > to make this runtime tunable instead of boot-time tunable. Until recently it *was* a sysctl. Kris [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (FreeBSD) Comment: For info see http://www.gnupg.org iD8DBQE7FOIKWry0BWjoQKURAvLZAKDOHPvjz4fFWmb/GKHV8QgmzZVTAACgwrdZ SYbIAjynq5fbcVEfZGU47Tw= =pAOF -----END PGP SIGNATURE-----
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