Date: Tue, 9 Jan 1996 02:52:50 -0800 (PST) From: asami@cs.berkeley.edu (Satoshi Asami) To: curt@emergent.com Cc: hackers@freebsd.org Subject: ccd Message-ID: <199601091052.CAA05442@silvia.HIP.Berkeley.EDU>
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Sorry, I haven't been reading the hackers list lately. Chuck told me people are talking about ccd here. I have it working on a 2.1 system. It screams bloody murder, I mean works pretty well. We are seeing about 18MB/s read/write with 6 4GB wide-scsi Barracudas on 2 AHA2940W controllers. (Those are disks that can do 4MB/s write and 7MB/s reads.) No parity yet, so you can't use it for any important data. And I have no idea how in the hell I should define a pseudo-device as a pseudo-device so it thinks it's an isa device. It needs a lot of cleanup before it can actually go in the tree, but if you have a news spool or something that you want to stripe across disks, this one is for you. I will make an "upgrade kit from 2.1R" when I get back from a retreat this weekend (in which am going to make a presentation of the measurements on this baby) so people can test it out. Satoshi
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