Date: Thu, 12 Jan 2006 06:59:10 -0600 From: "Matthew D. Fuller" <fullermd@over-yonder.net> To: Christoph Kukulies <kuku@www.kukulies.org> Cc: freebsd-hackers@freebsd.org Subject: Re: increasing dd disk to disk transfer rate Message-ID: <20060112125910.GB20029@over-yonder.net> In-Reply-To: <200601120948.k0C9mcqR092895@www.kukulies.org> References: <200601120948.k0C9mcqR092895@www.kukulies.org>
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On Thu, Jan 12, 2006 at 10:48:38AM +0100 I heard the voice of Christoph Kukulies, and lo! it spake thus: > > dd if=/dev/ad2 of=/dev/ad3 conv=noerror Give it a bigger blocksize (say, bs=1m or so) and it'll go a **LOT** faster. > My motherboard is an ASUS P4S8X with an on board promise controller > (currently not in use). System disk is on IDE1 and the two 80GB > disks are master/slave on IDE2 bus. You'll get much better results by having each drive be master on its own bus. -- Matthew Fuller (MF4839) | fullermd@over-yonder.net Systems/Network Administrator | http://www.over-yonder.net/~fullermd/ On the Internet, nobody can hear you scream.
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