Date: Sun, 14 Oct 2001 10:54:03 -0700 (PDT) From: Matthew Jacob <mjacob@feral.com> To: =?X-UNKNOWN?Q?S=F8ren_Schmidt?= <sos@freebsd.dk> Cc: Jordan Hubbard <jkh@FreeBSD.ORG>, jrossiter@symantec.com, sos@FreeBSD.ORG, freebsd-hackers@FreeBSD.ORG Subject: Re: Severe I/O Problems Message-ID: <Pine.BSF.4.21.0110141052590.7206-100000@beppo> In-Reply-To: <200110140935.f9E9Z2g25270@freebsd.dk>
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On Sun, 14 Oct 2001, Søren Schmidt wrote: > It seems Matthew Jacob wrote: > > I don't doubt this. I just would suggest that there is such a spread of h/w > > and configurations that sometimes turning on WC is fantastic, and sometimes > > not so fantastic. > > Hmm, I know of no drives that shuld perform worse with WC on, but your > case shows there could be such problems... I doubt it's just this case. > > > D'ya think you could come up with a little tester program that could predict > > whether WC would make sense for a particular h/w configuration or not? That'd > > be darned usefull. > > Hmm, that should be pretty easy, but I also have to integrate some of > my other stuff so that WC can be changed *safely* with atacontrol... This kind of performance tool would be useful for all drives- even SCSI drives. Just a thought. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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