Date: Wed, 30 May 2001 08:38:42 -0700 From: Peter Wemm <peter@wemm.org> To: 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: <20010530153842.0E221380E@overcee.netplex.com.au> In-Reply-To: <3B14D2AF.47CD9ECB@mindspring.com>
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Terry Lambert wrote: > Mike Silbersack 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. False. It is actually very easy to change at runtime if it is done at a convenient time. We have had patches kicking around for something like 6 months now that do this. Cheers, -Peter -- Peter Wemm - peter@FreeBSD.org; peter@yahoo-inc.com; peter@netplex.com.au "All of this is for nothing if we don't go to the stars" - JMS/B5 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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