Date: Fri, 24 Mar 2000 10:45:55 +0100 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: Greg Lehey <grog@lemis.com> Cc: Alfred Perlstein <bright@wintelcom.net>, Matthew Dillon <dillon@apollo.backplane.com>, current@FreeBSD.ORG Subject: Re: patches for test / review Message-ID: <2234.953891155@critter.freebsd.dk> In-Reply-To: Your message of "Thu, 23 Mar 2000 15:28:10 PST." <20000323152810.D9318@mojave.worldwide.lemis.com>
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In message <20000323152810.D9318@mojave.worldwide.lemis.com>, Greg Lehey writes : >> Hmm, try to keep vinum/RAID5 in the picture when you look at this >> code, it complicated matters a lot. > >I don't think it's that relevant, in fact. Yes it is, because the CPU needs to read the buffers to calculate the parity, it cannot just DMA the data out into hardware like a scsi controller can do. -- Poul-Henning Kamp FreeBSD coreteam member phk@FreeBSD.ORG "Real hackers run -current on their laptop." FreeBSD -- It will take a long time before progress goes too far! To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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